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| 1. general description the TEA18362LT is a controller ic for low- cost switched mode power supplies (smps). it is intended for flyback topologies. the built -in green functions provide high efficiency at all power levels. at high power levels the flyback operates in quasi-resonant (qr) mode. at lower power levels, the controller switches to frequency reduction (fr) or discontinuous conduction mode (dcm) and limits the peak current to approximately 25 % of the maximum peak current. valley swit ching is used in all operating modes. at low power levels, when the flyback sw itching frequency drops below 25 khz, the flyback converter switches to burst mode. a special burst mode has been integrated which reduces the opto current to a minimum level, ensuring high efficiency at low power and excellent no load power performance. as the switching frequency in this mode has a minimum value of 25 khz while the burst frequency is below 800 hz, the frequencies are outside the audible range. during the non-switching phase of the burst mode, the internal ic supply current is minimized fo r further efficiency optimization. the TEA18362LT includes an accurate overpower protection (opp). the opp enables the controller to operate in overpower situations for a limited amount of time. if the output is shorted, the system switches to low-power mode where the output power is limited to a lower level. the TEA18362LT is manufactur ed in a high-voltage silicon-on-insulator (soi) process. the soi process combines the advantages of a low-voltage process (accuracy, high-speed protection, functions, and contro l), while maintaining the high-voltage capabilities (high-voltage st art-up, low standby power, and an integrated x-capacitor discharge function). the TEA18362LT enables low-cost, highly efficient and reliable supplies for power requirements up to 75 w to be designed with a minimum number of external components. all values mentioned in this data sheet ar e typical values, unless otherwise specified. TEA18362LT greenchip smps control ic rev. 2 ? 12 december 2013 product data sheet
TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 2 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 2. features and benefits 2.1 general features ? smps controller ic for low-cost applications ? large supply voltage range (up to 30 v) ? integrated high-voltage start-up ? continuous vcc regulation during start-up and protection via the hv pin, allowing a minimum vcc capacitor value ? reduced opto current in burst mode enabling low no load power consumption ? operating frequencies in all operatin g modes are outside the audible area ? integrated x-capacitor discharge; nxp semiconductors patented (patent reference: 81512184ep01 (patent pending)) ? adjustable soft start ? power-down mode via the protect pin 2.2 green features ? low supply current during normal operation (0.6 ma without load) ? low supply current during non-switching state in burst mode (0.2 ma) ? valley switching for minimum switching losses ? frequency reduction with fixed minimum peak current to maintain high efficiency at low output power levels 2.3 protection features ? mains voltage independent overpower protection (opp) ? overtemperature protection (otp) ? integrated overpower time-out ? integrated restart timer for system fault conditions ? continuous mode protection using demagnetization detection ? accurate overvoltage protection (ovp) ? general-purpose input for latched protection; for use with system overtemperature protection (otp) ? driver maximum on-time protection 3. applications ? applications requiring efficient and cost-eff ective power supply solutions up to 75 w 4. ordering information table 1. ordering information type number package name description version TEA18362LT/1 so8 plastic small outline package; 8 leads; body width 3.9 mm sot96-1 xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 3 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 5. block diagram fig 1. block diagram $ d d d 9 & & 5 h v h w 9 & & 9 & & 6 w r s % u r z q 2 x w ; f d s ' l v f k d u j h 9 & & / r z 9 & & 6 w d u w 9 9 9 9 9 % x u v w 2 q 6 w d q g e \ p r g h 1 r u p d o p r g h 6 w d u w 2 3 & q w u 2 3 o l p l w 3 u r w h f w l r q 2 & 3 9 r x w 5 h j x o d w h g 9 l q 0 h d v x u h % x u v w p r g h % u r z q 2 x w ' h p d j 9 d o o h \ 9 & & f k d u j h g y l d + 9 f x u u h q w v r x u f h , s u r w h f w r q 9 f w u o r q , v r i w v w d u w r q % / $ 1 . 9 i o d x [ o d x [ 2 3 o l p l w 6 w d u w 2 3 & q w u , v h q v h 9 f f ! 9 f f v w d u w 9 f f ! 9 f f v w r s 1 r u p d o p r g h , y f f ? $ ' , * , 7 $ / & 2 1 7 5 2 / $ ' & 2 1 9 ( 5 6 , 2 1 + 9 $ 8 ; s u r w h f w l r q 9 f f ' l v f k d u j h 6 w d q g e \ p r g h , y f f ? $ 5 h j l v w h u v d i h u h v w d u w s u r w h f w l r q p r g h 9 & & u h j x o d w h g w r 9 f f v w d u w , y f f ? $ / d w f k h g s u r w h f w l r q p r g h 9 & & u h j x o d w h g w r 9 f f v w d u w , y f f ? $ 9 f w u o ! 9 q u r i j d w h s x o v h v ! , v h q v h ! 9 9 f f 9 f f u h v h w p v 9 f f 9 f f u h v h w 9 s u r w h f w ! 9 9 f w u o ! 9 2 3 & 2 8 1 7 ( 5 h q d e o h 6 w d u w 2 3 & q w u p v p v 6 d i h 5 h v w d u w & 2 8 1 7 ( 5 p v 5 h v w d u w h q d e o h 2 6 & , / / $ 7 2 5 $ 1 ' 7 , 0 , 1 * 6 , * 1 $ / 6 7 r q ! ? v v u t j d w h v u t % x u v w 2 q 6 w d u w % x u v w & 7 5 / 9 v u t 9 r x w 5 h j x o d w h g 9 & & v w r s 7 r q 0 d [ y d o o h \ ' h p d j p 9 9 $ / / ( < ' ( 7 ( & 7 * d w h ' ( / $ < 7 , 0 ( 5 6 3 h u l r g & r x q w h u 7 s h u l r g 1 s u h y $ % $ % * d w h & r x q w h u 1 q h z i 1 s u h y 7 s h u l r g 9 9 l q 0 h d v x u h 7 ( 0 3 ( 5 $ 7 8 5 ( 3 5 2 7 ( & 7 , 2 1 2 7 3 * d w h f s 3 x o v h p v p $ ? $ ' 5 , 9 ( 5 , 6 ( 1 6 ( q $ 9 9 9 9 $ 8 ; $ x [ 2 9 3 3 5 2 7 ( & 7 3 r z h u g r z q 2 9 3 3 u r w h f w 9 ? $ ? $ ? $ 9 n 9 & & ' l v f k d u j h 9 & & & k d u j h + 9 m i h w * 1 ' & 7 5 / v r i w v w d u w , s h d n 2 & 3 * d w h 9 r x w 5 h j x o d w h g 2 3 g h w h f w l r q 7 r q 0 d [ 9 9 9 f w u o ) u h t 9 . + ] . + ] p 9 p 9 ) u h t x h q f \ , s h d n TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 4 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 6. pinning information 6.1 pinning 6.2 pin description fig 2. TEA18362LT pinning diagram d d d , & 9 & & + 9 * 1 ' 3 5 2 7 ( & 7 ' 5 , 9 ( 5 & 7 5 / , 6 ( 1 6 ( $ 8 ; table 2. pin description pin pin number description vcc 1 supply voltage gnd 2 ground driver 3 gate driver output isense 4 current sense input aux 5 auxiliary winding input for demagnetization timing, valley detect, overpower correction, and ovp ctrl 6 control input protect 7 general purpose protection input; pin for power-down mode hv 8 high voltage start-up; active x-capacitor discharge TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 5 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 7. functional description 7.1 general control figure 3 shows a typical configuration of the TEA18362LT, including flyback circuit controller. 7.1.1 start-up and undervoltage lockout (uvlo) initially, the capacitor on the vcc pin is charged from the high-voltage mains using the hv pin. as long as v cc is below v startup , the ic current consumption is minimized to 40 ? a. when v cc reaches the v startup level, the control logic activa tes the internal circuitry. the ic then waits for the protect pin to reach v det(protect) + v det(hys)protect , the ctrl pin to reach v startup(ctrl) , and the mains voltage to increase to above the brownin level. when all these conditions are met, the soft start capacitor on the isense pin (c ss in figure 3 ) is charged. the system starts switchin g. in a typical application, the supply voltage is taken over by the aux iliary winding of the transformer. during the start-up period, the vcc pi n is continuously regulated to the v startup level using the hv charge current until the output voltage is at its regulation level, which is detected via the ctrl pin. in this way the vcc capaci tor value can be limited . due to the limited current capability from the hv pin and depending on the mains voltage, the voltage on pin vcc can still drop slightly during the start-up period. fig 3. typical TEA18362LT configuration ' 5 + 9 1 7 & + 9 * 1 ' ' 3 5 2 7 ( & 7 & 7 5 / ' 5 , 9 ( 5 , 6 ( 1 6 ( 9 & & $ 8 ; , & & 6 6 6 5 6 6 5 $ 8 ; 5 ' 5 , 9 ( 5 5 $ 8 ; 5 v h q v h ' 9 & & ' v h f 9 r x w & 9 & & & r x w d d d TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 6 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 7.2 modes of operation the TEA18362LT operates in quasi-resonant mode, discontinuous conduction mode or burst mode (see figure 5 ). the auxiliary winding of th e flyback transformer provides demagnetization and valley detection. fig 4. start-up sequence and normal operation d d d 9 e u r z q l q 9 v w d u w x s 9 w k 8 9 / 2 9 g h w 3 5 2 7 ( & 7 9 v w d u w x s & 7 5 / 9 v h q v h p d [ 9 r s s , 6 ( 1 6 ( v r i w v w d u w 2 ) ) 2 1 + 9 f k d u j h + 9 9 & & 9 2 9 , 2 3 5 2 7 ( & 7 9 , 2 & 7 5 / 9 , , 6 ( 1 6 ( TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 7 of 29 nxp semiconductors TEA18362LT greenchip smps control ic at high output power the converter operates in quasi-resonant mode. the next converter cycle starts after demagnetization of the transformer and detection of the valley. in quasi-resonant mode switching losses are minimized because the external mosfet is switched on while the drain-source voltage is minimal. to prevent high-frequency operation at lo wer loads, the quasi-resonant operation switches to discontinuous conduction mode (dcm) operation with va lley skipping once the frequency reaches its maximum. this frequency limit reduces the mosfet switch-on losses and conducted emi. at medium power levels, the controller enters frequency reduction (fr) mode. a voltage controlled oscillato r (vco) controls the fr equency. the mini mum frequency in this mode is reduced to 25 khz. during fr mode, the primary peak current is kept at an adjustable minimum level to maintain high efficiency. va lley switching is also active in this mode. at low power, the converter enters the burst mode. in burst mode, the minimum switching frequency is 25 khz. 7.3 supply management all internal reference voltages are derived from a temperature compensated on-chip band gap circuit. internal reference currents are derived from a trimmed and temperature-compensated current reference circuit. fig 5. modes of operation d d d ' & % $ $ & ' % n + ] n + ] i u h t x h q f \ u h g x f w l r q v \ v w h p h q w h u v e x u v w p r g h i u r p k h u h 3 p 9 p 9 3 t x d v l u h v r q d q w p r g h g u d l q y r o w d j h d w g l i i h u h q w s r l q w v g l v f r q w l q x r x v p r g h z l w k y d o o h \ v z l w f k l q j i , s h d n TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 8 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 7.4 mains voltage measuring in a typical application, the mains input voltage is measured using the hv pin. once per ms the mains voltage is measured by pulling down the hv pin to ground and measuring its current. this current then reflects the input voltage. the system determines if the mains voltage exceeds the brownin level or it is disconnected using an analog-to-digital converter and digital control (see figure 1 ). once the mains is above the brownin level, the system is allowed to start switching (see figure 6 ). if the mains voltage is continuously below the brownout level for a period of at least 30 ms, a brownout is detected and the system immediately stops switching. this period is required to avoid that the system stops switching due to the zero crossings of the mains or during a short ma ins interruption. when the mains voltage is meas ured by pulling the hv pin to ground, the di gital control calculates if there is a positive dv/dt at the mains. a positive dv/dt implies that a mains is connected. once a mains is detected, the measuring of the mains input voltage is stopped for a period of 6 ms to improve efficiency. in burst mode this waiting period is enlarged to 97 ms to improve efficiency. a positive dv/dt is measured when succeeding samples cross the brownin level (i bi(hv) ) or the mains high level (i ih(hv) ; see figure 7 ). fig 6. mains voltage measuring d d d p v p v 9 e u r z q l q 5 h f w l i l h g 0 d l q v y r o w d j h ' 5 , 9 ( 5 9 e u r z q r x w fig 7. detecting mains connection by +dv/dt d d d 9 p d l q v k l j k 9 e u r z q l q p v p v p v p v 5 h f w l i l h g 0 d l q v y r o w d j h + 9 f x u u h q w v d p s o l q j 3 r v l w l y h g 9 g w g h w h f w h g 6 \ v w h p z l o o v w r s v h q v l q j i r u p v TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 9 of 29 nxp semiconductors TEA18362LT greenchip smps control ic if the system does not detect a positive dv/dt for 28 ms, it assumes that the mains is disconnected. in that case the hv pin is c ontinuously pulled to ground, discharging the external x-capacitor. 7.5 auxiliary winding the vcc pin is connected via a diode and a capa citor to the auxiliary winding to efficiently supply the control ic. to detect demagnetization, valley, and input and output volt age, the auxiliary winding is connected to the aux pin via a resistive divider (see figure 3 ). each switching cycle is divided in sections. during each section the sys tem knows if the voltage or current out of the aux pin reflects the demagnetization, valley, input or output voltage (see figure 8 ). when the external mosfet is switched on, t he voltage at the auxilia ry winding reflects the input voltage. the aux pin is clamped to ? 0.7 v. the output current is a measure of the input voltage. this current value is internally used for an accurate opp. the demagnetization, valley and output voltages are measured as a voltage on the aux pin. in this way, the input voltage measurement and ovp can be adjusted independently. 7.6 protection if a protection is triggered, the controller st ops switching. depending on the protection triggered and the ic version, th e protection causes a restart or latches the converter to an off state (see ta b l e 3 ). to avoid false triggering, some protections have a built-in delay. fig 8. aux pin used for demagnetization, valley, and input and output voltage measurement d d d 9 l p h d v x u h p h q w g h p d j q h w l ] d w l r q y d o o h \ 9 r p h d v x u h p h q w g u d l q $ 8 ; ' 5 , 9 ( 5 9 9 l TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 10 of 29 nxp semiconductors TEA18362LT greenchip smps control ic [1] when the voltage on the protect pin is between v th(pd)protect and v det(protect) , the clock of the delay counter is changed from the driver pulse to 1 ms internal pulse. when the system stops switch ing, the vcc pin is not supp lied via the auxiliary winding anymore. depending on the protection triggered, the vcc is regulated to v startup via the hv pin (see ta b l e 3 ). releasing the latched protections or shortening the safe restart timer can be achieved by removing or shorting the mains voltage. this is called a fast latch reset. it is mainly used to shorten the test time in production (see section 7.6.8 ). 7.6.1 overpower protection (opp) the overpower function is used to realize a maximum output power which is nearly constant over the full input mains. the overpower compensation circuit measures the input voltage via the aux pin and outputs two reference voltages (see figure 1 ). if the measured voltage at the isense pin exceeds the highest reference voltage (v opc(isense) ) the driver output is pulled low. if the measured isense voltage exceeds the lower reference voltage (v opp(isense) ), the overpower counter starts. both reference voltages depend on the measured input voltage. in this way the system allows 150 % overpower over the rated power on a cycle-by-cycle base. 100 % overpower triggers the overpower counter of 200 ms. figure 9 shows the overpower protection curves. table 3. protections protection delay action v cc regulated aux open no wait until aux is connected no brownout 30 ms wait until v mains >v brownin yes maximum on-time no safe restart 800 ms yes otp internal no latch yes otp via the protect pin 2 ms to 4 ms latch yes ovp via the aux pin 4 driver pulses [1] latch yes overpower compensation no via aux; cycle-by-cycle - overpower time-out 40 ms or 200 ms latch yes overpower + uvlo no latch yes overcurrent protection blanking time cycle-by-cycle no uvlo no wait until v cc >v startup yes TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 11 of 29 nxp semiconductors TEA18362LT greenchip smps control ic during system start-up, the maximum overpower is limited to 100 % and the maximum time-out period is lowered to 40 ms. once the output voltage is withi n its regulation level (voltage on the ctrl pin is below 5 v), the maximum overpower is switched to 150 % and the maximum time-out period returns to 200 ms limiting the output power to a minimum at a shorted output. lowering the maximum output power and shortening the overpower timer ensure that the input power of the system is limited to < 5 w at a shorted output. due to the limited output power, the output vo ltage drops if the load requires more than 150 %. as a result, the v cc voltage drops as well and uvlo can be triggered. to retain the same response in an overpower situation (whether uvlo is triggered or not) the system enters the protection mode (latch or safe restart) when overpower + uvlo is detected. the system entering the protection mode does not depend on the value of the op counter. 7.6.2 overvoltage protection (ovp) an accurate output ovp is implemented by measuring the voltage at the aux pin during the secondary stroke. as the auxiliary wind ing voltage is a well- defined replica of the output voltage, the ovp level can be adjust ed by the external resistor divider ratio r aux2 /(r aux1 +r aux2 ). an internal counter of 4 gate pulses preven ts false ovp detection which can occur during esd or lightning events. 7.6.3 protection input (protect pin) the protect pin is a general purpose input pin. it can be used to switch off the converter (latched protection). the converter is stopped when the voltage on this pin is pulled below v det(protect) (0.5 v). the protect pin can be used to create an otp function by connecting a negative temperature coefficient (ntc) resistor to th is pin. a voltage on the protect pin lower than 0.5 v detects overtemperature. the protect current (maximum 74 ? a) flowing through the external ntc resistor creates the voltage. the protect voltage is clamped fig 9. overpower protection curves d d d p 9 , $ 8 ; p $ 9 2 3 & , 6 ( 1 6 ( 9 2 3 3 , 6 ( 1 6 ( TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 12 of 29 nxp semiconductors TEA18362LT greenchip smps control ic to maximum 1.45 v. at room temperature the re sistance value of the ntc resistor is much higher than at high temperature. due to the cl amp, the current out of the protect pin is 1.45 v divided by the resistance, which is significantly lower than 74 ? a. a filter capacitor can be connected to this pin. to avoid false triggering, an intern al filter of 2 ms to 4 ms is applied. the protect pin can also be a power-down mode pin (see section 7.10 ). 7.6.4 overtemperature protection (otp) integrated otp ensures that the ic stops switching if the junction temperature exceeds the thermal temperature shutdown limit. otp is a latched protection. 7.6.5 maximum on-time the controller limits the on-time of the external mosfet to 55 ? s. when the on-time is longer, the ic stops switching and enters safe restart mode. 7.6.6 safe restart if a protection is triggered and the system enters the safe restart mode, the system restarts after 800 ms. because the system is not switching, the vcc pin is supplied from the mains via the hv pin. after the 800 ms, the control ic measures the mains voltage. if the mains voltage exceeds the brownin level, the control ic activates the protect pin current source and the internal voltage sources connected to the ctrl pin. once the voltages on these pins reach a minimum level, the soft start capacitor on the isense pin is charged and the system starts switching again. the v cc is continuously regulated to the v startup level until the output voltage is within the regulation level again. 7.6.7 latched protection if a protection is triggered and the system enters the latched protection mode, the v cc is continuously regulated to the v startup level via the hv current source. as long as the ac voltage remains, the sys tem does not switch. removing the mains for a shor t time is the only possib ility to restart the system. 7.6.8 fast latch reset fast latch reset is a simple and fast meth od to reset the system when it is in latched protection mode or safe restart mode. this function is used during production testing. when the latched protection mode or safe restart mode is triggered, the voltage on pin vcc is fast discharged by an internal current source (i cc(dch) ); see figure 10 ). the fast discharge avoids an additional waiting period if the vcc voltage is high. when shorting the mains, the waiting period is only the time of the discharge from v startup to v rst . TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 13 of 29 nxp semiconductors TEA18362LT greenchip smps control ic using a 10 ? f vcc capacitor, the fast latch reset time is below 0.6 s. if the mains is not shorted but removed, a dischar ged of the x-cap can cause an additional waiting time. 7.7 burst mode operation (ctrl pin) the controller enters the burst mode when a low output power causes the voltage on the ctrl pin to drop below 0.5 v. during normal operation, the primary opto current can be calculated with equation 1 : (1) this implies that without any additional measure, the maximum primary opto current in burst mode is: (2) depending on the optocoupler used , the secondary opto current is even higher. to achieve minimum no load input power, the internal voltage (7 v) is regulated to a value that causes the primary opto current value to be 100 ? a when the system is in burst mode. the secondary opto current is then automa tically also within this lower range. if the ic detects that the opto current is lower than 80 ? a, the internal voltage is increased faster to achieve a small output voltage undershoot at a positive load step. once the system enters normal operation mode, the internal voltage is slowly in creased to 7 v again. fig 10. fast latch reset d d d ? $ o d w f k v d i h u h v w d u w u h v h w , & f r q v x p s w l r q 9 & & j r r g 9 & & 9 p d l q v s u r w h f w l r q ' 5 , 9 ( 5 ? $ p $ i d v w g l v f k d u j h w r 9 v w d u w x s 9 v w d u w x s 9 u v w 9 w k 8 9 / 2 i opto 7 vv io ctrl ?? ? ?? 12 k ? -------------------------------------------- = i opto 7 v0 v ? ?? 12 k ? ---------------------------- 583 ? a == TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 14 of 29 nxp semiconductors TEA18362LT greenchip smps control ic to avoid audible noise, a special digita l burst mode is implemented. the minimum switching frequency in this mo de is 25 khz. the burst mode repetition rate has a target frequency of 800 hz (1250 ? s; see figure 11 ). the amount of pulses at each burst period is defined by the reques ted output power. at higher output power, the amount of switching pulses increases. at low load, it decreases. the digital circuit defines the amount of burst cycles so that the burst frequency is below the audible range (800 hz) and the switching frequency exceeds the audible range (25 khz). any audible noise is avoided. the minimum amount of switching cycles is set to 3 to ensure good efficiency at very low loads. to regulate the output power at a ve ry low load, the system increases the burst period (< 800 hz). the increased burst per iod is still outside the audible range. to further improve the no load input power and efficiency at low loads, the current consumption of the ic is lowered to 235 ? a during the non-switching period in the burst mode. to achieve a good transient response in burst mode, the system starts switching immediately at an increased output load, a llowing a shorter burst pe riod. eventually, it regulates to the required burst period by increasing the amount of driver pulses (see figure 12 ). fig 11. burst mode operation d d d ? v i v z ? n + ] ? v 3 w ? v i v z ? n + ] i v z ? n + ] ! ? v i v z ? n + ] TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 15 of 29 nxp semiconductors TEA18362LT greenchip smps control ic due to the discrete number of switching cycles, the new calcul ated number of pulses must be 0.5 higher or lowe r than the existing number before one switching cycle is added or taken away. for the ic to increase or decrease the amount of switching cycles, a certain deviation from the target burst repetition frequency (800 hz) is required because of the internal algorithm. this deviation becomes smaller when the amount of switching cycles increases. figure 13 shows the upper and lower limits of the burst repetition frequency as a function of the number of pulses. when the amount of driver pulses within one burst period exceeds 40, the system switches to normal mode again. during the burst period, the voltage on the ctrl pin is clamped to the minimum v clamp(ctrl) . the current out of the ctrl pin is measured. if the current exceeds i stop(ctrl) , the burst period is terminated regardless of digital control. this feature ensures a small overshoot at the output voltage when the load in burst mode suddenly reduces. at the end of each burst period, the ctrl pin is pulled to the ground level for 12.5 ? s, unless the current flo wing from pin ctrl < 87 ? a, which usually occurs at a positive load step. fig 12. transient response in burst mode d d d ? v ? v ? v 9 f o d p s & 7 5 / ? v & 7 5 / o o r d g ' 5 , 9 ( 5 (1) lower limit (2) upper limit fig 13. upper and lower limits of burst frequency 1 s x o v h v d d d i + ] TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 16 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 7.8 soft start-up (isense pin) to prevent audible noise during start-up or a restart condition, a soft start feature is implemented. before the converter starts, the soft start capacitor c ss on the isense pin is charged. when the converter starts swit ching, the primary peak current slowly increases as the soft start capacitor discharges through the soft start resistor r ss (see figure 3 ). the soft start time constant is set by the external soft start capacitor and the parallel resistor values. 7.9 driver (driver pin) the driver circuit to the gate of the power mosfet has a current so urcing capability of 300 ma and a current sink capa bility of 750 ma. these capab ilities allow a fast turn-on and turn-off of the power mosfet for efficient operation. the maximum driver output is limited to 10.5 v. the driver output pin can be connected to the gate of a mosfet directly or via a resistor. 7.10 power-down mode to achieve extremely low no-load standby power, the ic can be forced to power-down mode using an external signal on the protect pin (see figure 14 ). when the voltage on the protect pin is pulled below v th(pd)protect , the system enters the power-down mode. the voltage on the ctrl pin is lowered to 0 v. the ic automatically runs in burst mode with the voltage on pin vcc regulated at the v restart level. the primary and secondary opto current is saved. the current out of the protect pin is reduced from 74 ? a to 47 ? a to save current consumption (see figure 15 ). to avoid that the latched protection is acci dentally triggered when the system enters or comes out of the power-down mode, the latched protection is blocked when the voltage on the protect pin is lower than v th(pd)protect . TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 17 of 29 nxp semiconductors TEA18362LT greenchip smps control ic fig 14. TEA18362LT application diagram of power-down feature fig 15. protect pin current entering and leaving power down mode d d d ' 5 + 9 1 7 & + 9 * 1 ' ' & 7 5 / 3 5 2 7 ( & 7 ' 5 , 9 ( 5 , 6 ( 1 6 ( 9 & & $ 8 ; , & & 6 6 5 ' 5 , 9 ( 5 6 5 6 6 5 $ 8 ; 5 $ 8 ; 5 v h q v h s r z h u g r z q ' 9 & & ' v h f & r & 9 & & 9 r ' & , 3 5 2 7 ( & 7 9 g h w 3 5 2 7 ( & 7 9 w k s g 3 5 2 7 ( & 7 ? $ ? $ ? $ 9 3 5 2 7 ( & 7 d d d TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 18 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 8. limiting values [1] equivalent to discharge a 100 pf capacitor through a 1.5 k ? series resistor. [2] equivalent to discharge a 200 pf capacitor through a 0.75 ? h coil and 10 ? . table 4. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit voltages v io(hv) input/output voltage on pin hv ? 0.4 +700 v v cc supply voltage continuous ? 0.4 +30 v t<100ms - +35 v v io(ctrl) input/output voltage on pin ctrl ? 0.4 +12 v v i(isense) input voltage on pin isense ? 0.4 +12 v v io(protect) input/output voltage on pin protect current limited ? 0.4 +5 v v io(aux) input/output voltage on pin aux current limited ? 5+5v v o(driver) output voltage on pin driver ? 0.4 +12 v currents i io(aux) input/output current on pin aux ? 1.5 +1 ma i io(hv) input/output current on pin hv ? 1+5ma i io(ctrl) input/output current on pin ctrl ? 30 ma i io(protect) input/output current on pin protect ? 1+1ma i o(driver) output current on pin driver ? <10% ? 0.4 +1 a general p tot total power dissipation t amb <75 ?c - 0.82 w t stg storage temperature ? 55 +150 ? c t j junction temperature ? 40 +150 ? c esd v esd electrostatic discharge voltage class 1 human body model [1] pin hv ? 1000 +1000 v all other pins ? 2000 +2000 v charged device model [2] ? 500 +500 v TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 19 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 9. thermal characteristics 10. characteristics table 5. thermal characteristics symbol parameter conditions typ unit r th(j-a) thermal resistance from junction to ambient in free air; jedec test board 91 k/w r th(j-c) thermal resistance from junction to case in free air; jedec test board 37.8 k/w table 6. characteristics t amb =25 ? c; v cc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit start-up current source (hv pin) i startup(hv) start-up current on pin hv v hv > 10 v 0.8 1.1 1.4 ma v cc >v startup ; hv not sampling --1 ? a v clamp clamp voltage i hv < 2 ma - - 680 v supply voltage management (vcc pin) v startup start-up voltage 13.4 14.9 16.4 v v restart restart voltage burst mode 9.9 11 12.1 v v th(uvlo) undervoltage lockout threshold voltage 9 9.9 10.8 v v rst reset voltage 7.75 8.65 9.55 v i cc(startup) start-up supply current v hv =0v - 40 - ? a v hv >10v ? 1.35 ? 1.05 ? 0.75 ma i cc(oper) operating supply current driver unloaded; excluding opto current 500 600 700 ? a i cc(burst) burst mode supply current non-switching; excluding opto current 200 235 270 ? a i cc(prot) protection supply current 185 220 255 ? a i cc(dch) discharge supply current latched protection; v cc >v startup 0.9 1.25 1.6 ma mains detect (hv pin) t p(hv) pulse duration on pin hv measuring mains voltage 18 20 22 ? s f meas(hv) measurement frequency on pin hv measuring mains voltage 0.9 1.0 1.1 khz t d(norm)hv normal mode delay time on pin hv measuring mains voltage 567ms t d(burst)hv burst mode delay time on pin hv measuring mains voltage 87 97 107 ms i bo(hv) brownout current on pin hv 552 587 622 ? a TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 20 of 29 nxp semiconductors TEA18362LT greenchip smps control ic i bi(hv) brownin current on pin hv 623 663 703 ? a i bo(hys)hv hysteresis of brownout current on pin hv -76- ? a i ih(hv) high-level input current on pin hv 1186 1262 1338 ? a i il(hv) low-level input current on pin hv 1118 1190 1262 ? a i hl(hys)hv high to low hysteresis current on pin hv -72- ? a i clamp(hv ) clamp current on pin hv during measurement time --1.7ma v meas(hv) measurement voltage on pin hv brownin/brownout - 2.6 - v t d(dch) discharge delay time x capacitor discharge; pin hv -28-ms t d(det)bo brownout detection delay time -30-ms peak current control (pin ctrl) v io(ctrl) input/output voltage on pin ctrl minimum flyback peak current 2.3 2.5 2.7 v maximum flyback current 4.9 5.25 5.6 v r int(ctrl) internal resistance on pin ctrl 10 12 14 k ? i io(ctrl) input/output current on pin ctrl normal mode v ctrl =1.5v ? 0.58 ? 0.48 ? 0.38 ma v ctrl =3.5v ? 0.385 ? 0.315 ? 0.245 ma v startup(ctrl) start-up voltage on pin ctrl 4.7 5 5.3 v burst mode (pin ctrl) v th(burst) burst mode threshold voltage 0.42 0.5 0.58 v t burst burst mode period - 1250 - ? s f sw(min) minimum switching frequency burst mode 23 25 27 khz i regd(ctrl) regulated current on pin ctrl burst mode ? 115 ? 100 ? 85 ? a v clamp(ctrl) clamp voltage on pin ctrl burst mode; system switching 0.44 0.5 0.56 v i stop(ctrl) stop current on pin ctrl burst mode; system switching; including regulated output current ? 820 ? 750 ? 680 ? a table 6. characteristics ?continued t amb =25 ? c; v cc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 21 of 29 nxp semiconductors TEA18362LT greenchip smps control ic t pd(ctrl) pull-down time on pin ctrl 10 12.5 15 ? s i det(ctrl) detection current on pin ctrl positive load step 65 80 95 ? a disable pulling down the ctrl pin 77 87 97 ? a oscillator f sw(max) maximum switching frequency 125 132.5 140 khz f sw(min) minimum switching frequency 23 25 27 khz v start(red)f frequency reduction start voltage pin ctrl 2.3 2.5 2.7 v current sense (pin isense) v sense(max) maximum sense voltage ? v/ ? t = 0 v/s; i aux =0 ? a; v ctrl =5.5v 700 765 830 mv frequency reduction mode; ? v/ ? t=0mv/ ? s; i aux =0 ? a; v ctrl =1.0v 190 207 225 mv t pd(sense) sense propagation delay from the isense pin reaching v sense(max) to driver off; v isense pulse-stepping 100 mv around v sense(max) - 120 - ns t leb leading edge blanking time 275 325 375 ns soft start (pin isense) i start(soft) soft start current ? 85 ? 75 ? 65 ? a v start(soft) soft start voltage enable voltage - v sense(max) -v r start(soft) soft start resistance 12 - - k ? demagnetization and valley control (pin aux) v det(demag) demagnetization detection voltage 20 35 50 mv i prot(aux) protection current on pin aux - ? 200 - na t blank(det)demag demagnetization detection blanking time 1.8 2.2 2.6 ? s (? v/ ? t) vrec valley recognition voltage change with time positive ? v/ ? t 0.25 0.37 0.49 v/ ? s negative ? v/ ? t ? 2.35 ? 1.9 ? 1.45 v/ ? s t d(vrec-swon) valley recognition to switch-on delay time - 120 - ns v clamp(aux) clamp voltage on pin aux i aux =1ma 4.4 4.8 5.2 v table 6. characteristics ?continued t amb =25 ? c; v cc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 22 of 29 nxp semiconductors TEA18362LT greenchip smps control ic t sup(xfmr_ring) transformer ringing suppression time 1.9 2.3 2.7 ? s maximum on-time (pin driver) t on(max) maximum on-time 45 55 65 ? s driver (pin driver) i source(driver) source current on pin driver v driver =2v - ? 0.3 ? 0.25 a i sink(driver) sink current on pin driver v driver = 2 v 0.25 0.3 - a v driver =10v 0.6 0.75 - a v o(driver)max maximum output voltage on pin driver 9 10.5 12 v overpower compensation (pin isense and pin aux) v clamp(aux) clamp voltage on pin aux primary stroke; i aux = ? 0.3 ma ? 0.8 ? 0.7 ? 0.6 v t d(clamp)aux clamp delay time on pin aux after rising edge of pin driver 580 665 750 ns after falling edge of pin driver 1.8 2.2 2.6 ? s v opc(isense) overpower compensation voltage on pin isense i aux = ? 0.3 ma 700 765 830 mv i aux = ? 1.46 ma 400 450 500 mv v opp(isense) overpower protection voltage on pin isense counter trigger level i aux = ? 0.3 ma 450 500 550 mv i aux = ? 1.46 ma 265 295 325 mv t d(opp) overpower protection delay time start-up mode; v ctrl >5v 36 40 44 ms normal mode 180 200 220 ms t d(restart) restart delay time 720 800 820 ms external protection (pin protect) v det(protect) detection voltage on pin protect 0.47 0.5 0.53 v v det(hys)protect hysteresis of detection voltage on pin protect -50-mv i o(protect) output current on pin protect normal mode ? 79 ? 74 ? 69 ? a power-down mode ? 55 ? 47 ? 40 ? a v clamp(protect) clamp voltage on pin protect 1.25 1.45 1.65 v power-down mode (pin protect) v th(pd)protect power-down threshold voltage on pin protect 0.18 0.2 0.22 v v hys(pd) power-down hysteresis voltage -20-mv table 6. characteristics ?continued t amb =25 ? c; v cc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 23 of 29 nxp semiconductors TEA18362LT greenchip smps control ic overvoltage protection (pin aux) v ovp(aux) overvoltage protection voltage on pin aux 2.88 3 3.12 v t det(ovp) overvoltage protection detection time in the secondary stroke 1.9 2.3 2.7 ? s temperature protection t pl(ic) ic protection level temperature 130 140 150 c table 6. characteristics ?continued t amb =25 ? c; v cc = 20 v; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into the ic; unless otherwise specified. symbol parameter conditions min typ max unit TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 24 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 11. application information a power supply with TEA18362LT is a flyback converter operating in qr mode or dcm (see figure 3 ). capacitor c vcc buffers the ic supply voltage. the ic supply voltage is powered from the mains via d1, d2, r hv during start-up. it is powered via the auxiliary winding during normal operation. r hv defines the current into the hv pin for brownout detection and mains detection. sense resistor r sense converts the current through mosfet s1 into a voltage on pin isense. the value of r sense defines the maximum primary peak current through mosfet s1. resistor r ss and capacitor c ss define the soft start time. resistor r driver is required to limit the current spik es to pin driver because of parasitic inductance of the current sense resistor r sense . r driver also dampens possible oscillation of mosfet s1. adding a bead on the gate pin of mosfet s1 can be required to prevent local oscillations of the mosfet. the protect pin can be connected to a negative temperature coefficient (ntc) resistor. the protection is activated w hen the resistor drops below a value of v det(protect) /i o(protect) =6.7k ? . shorting the protect pin to ground by an external switch or optocoupler can activate the power-down mode. the resistor r aux2 determines the compensation for input voltage variation. the ratio of r aux1 and r aux2 determines the overvoltage protection at the aux pin. TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 25 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 12. package outline fig 16. package outline sot96-1 (so8) 8 1 , 7 $ p d [ $ $ $ e s f ' ( h + ( / / s 4 = \ z y 5 ( ) ( 5 ( 1 & ( 6 2 8 7 / , 1 ( 9 ( 5 6 , 2 1 ( 8 5 2 3 ( $ 1 3 5 2 - ( & 7 , 2 1 , 6 6 8 ( ' $ 7 ( , ( & - ( ' ( & - ( , 7 $ p p l q f k h v r r ' , 0 ( 1 6 , 2 1 6 l q f k g l p h q v l r q v d u h g h u l y h g i u r p w k h r u l j l q d o p p g l p h q v l r q v 1 r w h v 3 o d v w l f r u p h w d o s u r w u x v l r q v r i p p l q f k p d [ l p x p s h u v l g h d u h q r w l q f o x g h g 3 o d v w l f r u p h w d o s u r w u x v l r q v r i p p l q f k p d [ l p x p s h u v l g h d u h q r w l q f o x g h g 6 2 7 ; z 0 $ $ $ e s ' + ( / s 4 g h w d l o ; ( = h f / y 0 $ $ $ s l q l q g h [ \ ( 0 6 p p v f d o h 6 2 s o d v w l f v p d o o r x w o l q h s d f n d j h o h d g v e r g \ z l g w k p p 6 2 7 TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 26 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 13. revision history table 7. revision history document id release date data sheet status change notice supersedes TEA18362LT v.2 20131212 product data sheet - TEA18362LT v.1 modifications: ? the data sheet status has changed from preliminary to product. ? table 1 ? ordering information ? has been updated. TEA18362LT v.1 20131204 preliminary data sheet - - TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 27 of 29 nxp semiconductors TEA18362LT greenchip smps control ic 14. legal information 14.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term ?short data sheet? is explained in section ?definitions?. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple device s. the latest product status information is available on the internet at url http://www.nxp.com . 14.2 definitions draft ? the document is a draft versi on only. the content is still under internal review and subject to formal approval, which may result in modifications or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall hav e no liability for the consequences of use of such information. short data sheet ? a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request vi a the local nxp semiconductors sales office. in case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. product specification ? the information and data provided in a product data sheet shall define the specification of the product as agreed between nxp semiconductors and its customer , unless nxp semiconductors and customer have explicitly agreed otherwis e in writing. in no event however, shall an agreement be valid in which the nxp semiconductors product is deemed to offer functions and qualities beyond those described in the product data sheet. 14.3 disclaimers limited warranty and liability ? information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such info rmation. nxp semiconductors takes no responsibility for the content in this document if provided by an information source outside of nxp semiconductors. in no event shall nxp semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. notwithstanding any damages that customer might incur for any reason whatsoever, nxp semiconductors? aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the terms and conditions of commercial sale of nxp semiconductors. right to make changes ? nxp semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use ? nxp semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors and its suppliers accept no liability for inclusion and/or use of nxp semiconducto rs products in such equipment or applications and therefore such inclusion and/or use is at the customer?s own risk. applications ? applications that are described herein for any of these products are for illustrative purpos es only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. customers are responsible for the design and operation of their applications and products using nxp semiconductors products, and nxp semiconductors accepts no liability for any assistance with applications or customer product design. it is customer?s sole responsibility to determine whether the nxp semiconductors product is suitable and fit for the customer?s applications and products planned, as well as fo r the planned application and use of customer?s third party customer(s). customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. nxp semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer?s applications or products, or the application or use by customer?s third party customer(s). customer is responsible for doing all necessary testing for the customer?s applic ations and products using nxp semiconductors products in order to av oid a default of the applications and the products or of the application or use by customer?s third party customer(s). nxp does not accept any liability in this respect. limiting values ? stress above one or more limiting values (as defined in the absolute maximum ratings system of iec 60134) will cause permanent damage to the device. limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the recommended operating conditions section (if present) or the characteristics sections of this document is not warranted. constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. terms and conditions of commercial sale ? nxp semiconductors products are sold subject to the gener al terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms , unless otherwise agreed in a valid written individual agreement. in case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. nxp semiconductors hereby expressly objects to applying the customer?s general terms and conditions with regard to the purchase of nxp semiconducto rs products by customer. no offer to sell or license ? nothing in this document may be interpreted or construed as an offer to sell products t hat is open for acceptance or the grant, conveyance or implication of any lic ense under any copyrights, patents or other industrial or intellectual property rights. document status [1] [2] product status [3] definition objective [short] data sheet development this document contains data from the objecti ve specification for product development. preliminary [short] data sheet qualification this document contains data from the preliminary specification. product [short] data sheet production this document contains the product specification. TEA18362LT all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 12 december 2013 28 of 29 nxp semiconductors TEA18362LT greenchip smps control ic export control ? this document as well as the item(s) described herein may be subject to export control regu lations. export might require a prior authorization from competent authorities. non-automotive qualified products ? unless this data sheet expressly states that this specific nxp semicon ductors product is automotive qualified, the product is not suitable for automotive use. it is neither qualified nor tested in accordance with automotive testing or application requirements. nxp semiconductors accepts no liabili ty for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. in the event that customer uses t he product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without nxp semiconductors? warranty of the product for such automotive applicat ions, use and specifications, and (b) whenever customer uses the product for automotive applications beyond nxp semiconductors? specifications such use shall be solely at customer?s own risk, and (c) customer fully indemnifies nxp semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive app lications beyond nxp semiconductors? standard warranty and nxp semiconduct ors? product specifications. translations ? a non-english (translated) version of a document is for reference only. the english version shall prevail in case of any discrepancy between the translated and english versions. 14.4 trademarks notice: all referenced brands, produc t names, service names and trademarks are the property of their respective owners. greenchip ? is a trademark of nxp b.v. 15. contact information for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com nxp semiconductors TEA18362LT greenchip smps control ic ? nxp b.v. 2013. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please se nd an email to: salesaddresses@nxp.com date of release: 12 december 2013 document identifier: TEA18362LT please be aware that important notices concerning this document and the product(s) described herein, have been included in section ?legal information?. 16. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features and benefits . . . . . . . . . . . . . . . . . . . . 2 2.1 general features . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 green features . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.3 protection features . . . . . . . . . . . . . . . . . . . . . . 2 3 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 pinning information . . . . . . . . . . . . . . . . . . . . . . 4 6.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 functional description . . . . . . . . . . . . . . . . . . . 5 7.1 general control . . . . . . . . . . . . . . . . . . . . . . . . . 5 7.1.1 start-up and undervoltage lockout (uvlo) . . 5 7.2 modes of operation . . . . . . . . . . . . . . . . . . . . . . 6 7.3 supply management. . . . . . . . . . . . . . . . . . . . . 7 7.4 mains voltage measuring . . . . . . . . . . . . . . . . . 8 7.5 auxiliary winding . . . . . . . . . . . . . . . . . . . . . . . . 9 7.6 protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.6.1 overpower protection (opp) . . . . . . . . . . . . . 10 7.6.2 overvoltage protection (ovp) . . . . . . . . . . . . 11 7.6.3 protection input (protect pin) . . . . . . . . . . 11 7.6.4 overtemperature protecti on (otp) . . . . . . . . 12 7.6.5 maximum on-time . . . . . . . . . . . . . . . . . . . . . . 12 7.6.6 safe restart . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.6.7 latched protection . . . . . . . . . . . . . . . . . . . . . 12 7.6.8 fast latch reset . . . . . . . . . . . . . . . . . . . . . . . . 12 7.7 burst mode operation (ctrl pin). . . . . . . . . . 13 7.8 soft start-up (isense pin) . . . . . . . . . . . . . . . 16 7.9 driver (driver pin) . . . . . . . . . . . . . . . . . . . . 16 7.10 power-down mode . . . . . . . . . . . . . . . . . . . . . 16 8 limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 18 9 thermal characteristics . . . . . . . . . . . . . . . . . 19 10 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 19 11 application information. . . . . . . . . . . . . . . . . . 24 12 package outline . . . . . . . . . . . . . . . . . . . . . . . . 25 13 revision history . . . . . . . . . . . . . . . . . . . . . . . . 26 14 legal information. . . . . . . . . . . . . . . . . . . . . . . 27 14.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 27 14.2 definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 14.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 14.4 trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 15 contact information. . . . . . . . . . . . . . . . . . . . . 28 16 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 |
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