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| irs27951s IRS27952(4)s 1 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 resonant half - bridge converter con trol ic ordering information base part number package type standard pack complete part number form quantity irs27951 soic8n tube/bulk 95 irs27951spbf tape and reel 2500 irs27951strpbf IRS27952 soic8n tube/bulk 95 IRS27952spbf tape and reel 2500 IRS27952strpbf IRS279524 soic14n tube/bulk 55 IRS279524spbf tape and reel 2500 IRS279524strpbf features ? simple primary - side control solution for fixed and variable frequency dc - dc resonant converters. ? max 500khz per channel output with 50% duty cycle ? floating channel bootstrap operation up to +600vdc ? programmable minimum and maximum switching frequency ? programmable soft start frequency and soft start time ? programmable dead time ? micropower start - up & ultra low quiescent current ? over - current protection using low side mosfet rds(on) ? user initiated micropower ?sleep mode? ? under - voltage lockout ? simple design with minimal component count. ? lead- free typical application ? lcd & pdp tv ? telecom smps, pc smps ? home audio systems product summary topology half - bridge v offset 600 v v out v cc i o+ & i o- (typical) 300 ma & 900 ma dead - time (programmable) 200ns~2us package options 14 - lead soic irs27951s/IRS27952s IRS279524s
irs27951s IRS27952(4)s 2 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 typical application diagram dc bus d2 rg1 m1 cbs cf 2 cout cr cdc rbias m2 rs 1 ds s dbs rt u2 ct rs 2 rs s cs s rled rmax rf 2 lr d1 d3 u3 tl431 rg2 cf 1 rc c r1 rt 2 ct/sd 3 ho 7 lo 5 vb 8 vcc 1 com 4 vs 6 u1 irs2795 r2 loa d vin r tn irs27951s IRS27952(4)s 3 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 table of contents page ordering information 1 typical application diagram 2 absolute maximum ratings 5 recommended operating conditions 5 electrical characteristics 6 functional block diagram 8 input/output pin equivalent circuit diagram 9 lead definitions 10 lead assignments 10 state diagram 12 application information and additional details 13 package details 23 tape and reel details 2 5 part marking information 27 qualification information 28 irs27951s IRS27952(4)s 4 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 description the irs2795(1,2)(4) is a self oscillating half - bridge driver ic for dc - dc resonant converter applications, especially the llc resonant half - bridge converter. the frequency and dead time can be programmed externally using two external components. the ic offers over current protection using the on state resistance of the low - side mosfet. the ic can be disabled by externally pulling the voltage at the ct/sd pin below its enable voltage threshold irs27951s IRS27952(4)s 5 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 absolute maximum ratings absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. all voltage parameters are absolute voltages referenced to com, all currents are defined positive into any lead. the thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. symbol definition min. max. units v cc supply voltage - 0.3 25 v v b high - side floating supply voltage - 0.3 625 v s high - side floating supply offset voltage v b ? 25 v b + 0.3 v ho high - side floating output voltage v s ? 0.3 v b + 0.3 v lo low - side output voltage - 0.3 v cc + 0.3 v ct ct/sd pin voltage - 0.3 v cc + 0.3 v rt rt pin voltage - 0.3 v cc + 0.3 i rt rt pin source current --- 2 ma dv s /dt allowable offset voltage slew rate - 50 50 v/ns t j operating junction temperature - 40 150 c t s storage temperature - 55 150 p d package power dissipation @ ta 25c (8 lead soic) ? 0.833 w (14 lead soic) ? 1.04 rth ja thermal resistance, junction to ambient (8 lead soic) ? 150 c/w (14 lead soic) ? 120 recommended operating conditions for proper operation the device should be used within the recommended conditions. symbol definition min. max. units v bs high - side floating supply voltage 10 vcc v v s steady - state high - side floating supply offset voltage - 3.0 ? 600 v cc supply voltage 12 18 fsw switching frequency --- 500 khz ? care should be taken to avoid output switching conditions where the v s node flies inductively below ground by more than 5 v. recommended component values symbol component min. max. units r rt rt pin resistor value 2 100 k : c ct ct pin capacitor value 200 2000 pf irs27951s IRS27952(4)s 6 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 electrical characteristics vcc=vbs=15v, vs=0v, cvcc=cbs=0.1uf, clo=cho=1nf, rt=50.5 k ? , ct=200pf and ta = 25c unless otherwise specified. the output voltage and current (vo and io) parameters are referenced to com and are applicable to the respective ho and lo output leads. symbol definition min typ max units test conditions low voltage supply characteristics v ccuv + v cc turn on threshold 10.1 11 11.9 v n/a v ccuv - v cc turn off threshold (under voltage lock out) 8.1 9 9.9 v ccuvhys v cc undervoltage lockout hysteresis --- 2 --- i ccstart v cc startup current --- 50 100 a v cc = v ccuv+ - 0.1v i sleep sleep mode v cc supply current --- 150 200 v ct/sd irs27951s IRS27952(4)s 8 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 functional block diagram rt hv level shifter dv / dt booster uvbs q s r q delay match vb ho vs com vcc lo uv detection ct / sd oscillator + - 2 v sleep mode logic pulse steering current fault logic & control dead time irs27951s IRS27952(4)s 9 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 input/output pin equivalent circuit diagrams: vcc com rt esd diode esd diode r esd vcc com ct esd diode esd diode r esd r esd v cc com lo esd diode esd diode v b v s ho esd diode esd diode 25v 25v 600v irs27951s IRS27952(4)s 10 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 lead definitions: symbol description vcc supply voltage rt oscillator timing resistor ct/sd oscillator timing capacitor / shutdown com ground lo low - side gate drive vs high - side gate drive return / hv current sense ho high - side gate drive vb high - side floating supply voltage lead assignments: irs2795(1,2)s ho vb rt vs vcc ct/sd lo com 4 3 2 1 5 6 7 8 lead assignments: IRS27952 4s ho vb com nc nc vs 7 6 5 4 3 2 1 9 10 11 12 13 14 vcc rt ct / sd 8 nc nc nc nc lo irs27951s IRS27952(4)s 11 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 vcc: power supply voltage this is the supply voltage pin of the ic and sense node for the under - voltage lock out circuit. it is possible to turn off the ic by pulling this pin below the minimum turn off threshold voltage, v ccuv- without damage to the ic. this pin is not internally clamped. rt: oscillator timing resistor this pin provides a precise 2v reference and a resistor connected from this pin to com defines a current that is used to set the minimum oscillator frequency. to close the feedback loop that regulates the converter output voltage by modulating the oscillator frequency, the phototransistor of an optocoupler will be connected to this pin through a resistor. the value of this resi stor will set the maximum operating frequency. an r - c series connected from this pin to com sets frequency shift at start - up to prevent excessive energy inrush (soft - start). ct/sd: oscillator timing capacitor /shutdown an external capacitor ct from this pin to com sets the dead time and frequency of the oscillator. the ct pin has sawtooth waveform, which is charged up by the current reference programmed at rt pin during rising slope and is discharged by an internal fixed 2ma current source during the falling slope. the falling time of the sawtooth defines the dead - time. at start - up, a 10ua current source charges this capacitor and the oscillator is enabled only when the voltage at this pin exceeds ven1. the ic can also b e used to enter sleep mode by externally pulling this pin below ven2. com: logic and gate drive ground this is ground potential pin of the integrated control circuit. all internal circuits are referenced to this point. lo: low - side gate drive output the driver is capable of 0.3a source and 0.9a sink peak current to drive the lower mosfet of the half - bridge leg. the pin is actively pulled to gnd during uvlo. vs: high side gate return/current sense this is the floating supply return. this pin also acts as a high voltage current sense pin and uses the low - side mosfet r dson to detect an over current fault condition. ho: high - side gate drive the driver is capable of 0.3a source and 0.9a sink peak current to drive the high - side mosfet in the half - bri dge. a resistor internally connected to pin vs ensures that the pin is not floating during uvlo. vb: high side floating supply voltage the bootstrap capacitor connected between this pin and vs is charged by the bootstrap diode when the low - side gate - dri ve is high. irs27951s IRS27952(4)s 12 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 state diagram uvlo mode the ic remains in the uvlo condition until the voltage on the v cc pin exceeds the v cc turn on threshold voltage, v ccuv+ . during the time the ic remains in the uvlo state, the gate drive circuit is inactive and the ic draws a quiescent current of i cc start . the uvlo mode is accessible from any other state of operation whenever the ic supply voltage condition of v cc < v cc uv- occurs. sleep mode when v cc exceeds the v ccuv+ threshold the irs2795(1,2)(4) star ts to charge up ct capacitor with i ct startup current towards the enable threshold, v en1 . during this period, the ic is in sleep mode. the oscillator and gate drive circuits are disabled and the ic consumes i sleep . when the voltage at the ct/sd pin excee ds v en1 , the ic is pulled out of sleep mode and the 2v reference voltage at the rt pin is enabled. the ic can be placed in sleep mode while operating in normal mode by externally pulling the ct/sd pin below v en2 . when this occurs, the rt pin of the ic is internally discharged to com to ensure a system restart with soft - start. normal mode the ic enters in normal operating mode once the uvlo voltage and v en1 has been exceeded. the rt pin voltage is 2v under normal mode. gate drive signal appears at ho and lo with fixed 50% duty - cycle. during this mode, the over - current protection scheme using the vs sense circuitry is active. current fault mode when operating in normal mode, the ic senses the voltage on the vs pin each time the low - side device is turned on (with a leading edge blanking on lo, t blank ). when the voltage sensed exceeds vocp, the ic terminates the current gate pulse, disables the osc illator and gate drivers, and enters the current fault mode. when the ic enters this state, rt and ct/sd pins are internally discharged and ic supply voltage must be recycled before the ic can restart with soft - start again dc power on gate inactive oscillator inactive uvlo oscillator inactive gates inactive normal oscillator and gates active ictcharge = irt over current protection active vcc < vccuv - vs > v ocp @ lo = high sleep oscillator and gates inactive ict = ictstart icc = isleep vcc > vccuv + current fault oscillator and gates inactive internally discharge rt and ct pins vct > v en 1 vcc < vccuv - vct < v en 2 irs27951s IRS27952(4)s 13 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 application information and add itional details information regarding the following topics is included as subsections within this section of the datasheet. ? general description ? ic supply circuit & low start - up current ? multi - function 2 pin oscillator ? frequency and dead - time calculation ? user initiated micropower sleep mode ? gate drive capability ? system protection features ? pcb layout tips ? additional documentation general description the irs2795(1,2)(4) is a double - ended controller for the resonant half - bridge topology. it provides compl ementary outputs with 50% (max) duty cycle; the high - side and low - side bridge devices are driven 180 out - of - phase for exactly the same time. a programmable dead - time inserted between the turn - off of one switch and the turn - on of the other one guarantees s oft - switching operation. the ic incorporates a multi - function oscillator that allows the designer to program all the necessary features to control a half bridge resonant switch - mode power supply featuring low standby power. the ic also incorporates additio nal protection features for robust operation and provides a high performance solution while minimizing external components, design time, and pr inted circuit board real estate. the ic enables the designer to externally program all the following features u sing a 2 pin rc oscillator ? operating frequency range (start - up, minimum and maximum frequency), dead time, soft - start time and sleep mode operation. irs2795(1,2)(4) also uses ir?s proprietary high - voltage technology to implement a vs sensing circuitry th at monitors the current through the low - side half bridge mosfet for short circuit faults. by using the r dson of the low - side mosfet, the irs2795(1,2)(4) eliminates the need for an additional current sensing resistor, filter and current - sensing pin. this pr otection feature is latched and the thresholds are fixed at 2v for irs27951 and 3v for IRS27952(4). finally, the controller ic also features a micro power startup current (icc<100a) and a user initiated sleep mode during which the ic power consumption is less than 200a (@ vcc=15v). the sleep mode function allows system designs with reduced standby power consumption and can be used to meet stringent energy standards from blue angel, energy star etc. ic supply circuit & low start - up current the uvlo circuit maintains the ic in uvlo mode if the vcc pin voltage is less than the vcc turn - on threshold, vccon. if the vcc pin voltage drops below the uvlo threshold vccuvlo at anytime after start - up, the ic is pushed back into uvlo mode. the current consumption in this mode is less than 100ua. figure 1: vcc under voltage lockout vcc uvlo uvlo normal vccuvlo vccon irs27951s IRS27952(4)s 14 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 multi - function 2 pin oscillator the two pin oscillator is externally programmed by a resistor rt connected between pin#2 and com and a capacitor ct, connected from pin#3 to com. the rt pin provides an accurate 2v reference (2%) with a 2ma source capability (higher the current sourced by the pin, the higher is the oscillator frequency). in normal operation, ct is charged by a current defined by the network connected at the rt pin. the oscillator ramp charges and discharges between the two ramp thresholds (3 and 5v). when the ramp voltage reaches 5v, it is internally discharged by a fixed current of 2ma. the fall time for the ramp corresponds to the dead time between the brid ge devices. at startup, a 10ua internal current source charges the oscillator capacitor at the ct pin to v en1 . at this point, the ic is pulled out of sleep mode and the 2v reference voltage at the rt pin is enabled. the low - side device is now also turned on to charge the bootstrap capacitor (this sequence at startup or while exiting sleep mode ensures that the low - side device is always switched on first to charge the bootstrap capacitor which will be ready to supply the high - side floating driver). the low - side device remains on till the ct pin voltage reaches the upper ramp threshold of 5v (see fig 2). the programmable features for the oscillator are listed below - ? wide frequency range: the high - speed oscillator allows an output frequency from 50 khz up to 500 khz. ? programmable dead - time: the oscillator timing capacitor ct also programs the dead time between lo and ho. ? programmable soft - start time: in resonant converter applications, the output power delivered is an inverse function of frequency i.e. soft - start is achieved by sweeping the operating frequency from an initial high value until the control loop takes over. additionally, the resonant tan k has a non - linear frequency dependence that makes the converter?s power transfer capability change little when the frequency is away from resonance and change very quickly as frequency approaches the resonant tank frequency. an r - c series circuit (css + rss) connected between the rt pin and com programs the soft - start time for the converter. initially, the capacitor css is totally discharged, so that the series resistor rss is effectively in parallel to rfmin and the resulting initial frequency is deter mined by rss and rt only (the optocoupler?s phototransistor is cut off). during this frequency sweep, the operating frequency will decay following the exponential charge of css, that is, initially it will change relatively quickly but the rate of change wi ll get slower. the css capacitor charges until its voltage reaches 2v and, consequently, the current through rss is reduced to zero. the soft - start sequence is activated at normal startup and back to operation from sleep mode. ? programmable start - up, minimum and maximum frequency: in resonant converter applications, it is important to operate the converter in the soft - switching region of operation. irs2795(1,2)(4) offers a trimmed voltage reference (2%) at the rt pin to accurately program the convert er switching frequency range in the desired region of operation. - the effective resistance (rss//rt) at pin#2 during ic power up and the ct capacitor program the start - up frequency of the converter. - rt and ct program the minimum operating frequency. irs27951s IRS27952(4)s 15 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 - for closed loop systems with feedback control, a resistor rfmax can be connected between the rt pin and the collector of the (emitter - grounded) phototransistor. the feedback loop modulates the current through the phototransistor and hence, the oscillato r frequency for output voltage regulation. - the converter maximum frequency is set by (rmax//rt) and ct. figure 2: typical startup waveforms with soft - start frequency and dead - time calculation the dead time is calculated by the following equation: ma v pf c t t dt 2 2 ) 40 85 . 0 ( ? + = sleep 3 v v en1 rt vcc normal uvlo 5v ct 2v vccon ho lo irs27951s IRS27952(4)s 16 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 figure 3: dead - time with ct capacitor chart the running frequency of the irs2795(1,2)(4) is given by: ] ) 40 85 . 0 ( [ 2 1 dt t teq sw t pf c r f + + ? = r teq is the total equivalent resistance at rt pin. or just simply select the rt value form the frequency chart shown below: figure 4: switching frequency and rt selection the maximum duty cycle is given by: ) * ( 5 . 0 f t dc dt max ? = 0 200 400 600 800 1000 1200 1400 1600 1800 2000 0 500 1000 1500 2000 dt (ns) ct (pf) dead - time vs. ct value 0 50 100 150 200 250 300 350 400 450 500 0 10 20 30 40 50 frequency (khz) rt (k ? ) frequency chart ct=220pf ct=330pf ct=470pf ct=1nf irs27951s IRS27952(4)s 17 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 user initiated micro power sleep mode the ic can be actively pushed into a micropower sleep mode where current consumption is less than 200ua by pulling the ct pin below the sleep threshold v en2 , even while the ic vcc is above vccon. this mode allows the user to disable the resonant power converter during application standby modes in order to meet regulatio n standards (blue angel, energy start, green power etc). this ic disabling feature can also be use to implement other system protection features. figure 5: ic transition from normal to sleep mode by pulling down ct/sd pin gate drive capability the gate drive output stage of the ic is capable of 0.3a peak source current and 0.9a peak sink current drive capability. gate drive buffer circuits can be easily driven with the gate pin of the ic to adapt to any system power level. system protection features irs2795(1,2)(4) uses ir?s high - voltage technology to implement a vs sensing circuitry that monitors the current through the low - side half bridge mosfet for short circuit faults. by using the r dson of the low - side mosfet, the need for an additiona l current sensing resistor is eliminated. the voltage at the vs node is sensed after a leading edge blanking time on lo. when the sensed voltage exceeds the protection thresholds, the ic enters current fault mode (gate drive outputs are disabled and the os cillator pins are internally discharged to com). this protection feature is latched and the ic supply voltage must be pulled below the uvlo threshold and then again above vccon in order to reset the latch and restart the ic. sleep 3 v v en 2 normal 5 v ct 2 v ho lo rt irs27951s IRS27952(4)s 18 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 vs ilr ho lo vs sensing voltage ocp threshold vs sensing is enabled when lo is high figure 6: vs sensing over current protection pcb layout tips distance between high and low voltage components: it is strongly recommended to place the components tied to the floating voltage pins (v b and v s ) near the respective high voltage portions of the device. ground plane: in order to minimize noise coupling, the ground plane should not be placed under or near the high voltage floating side. gate drive loops: current loops behave like antennas and are able to receive and transmit em noise. in order to reduce the em coupling and improve the power switch turn on/off performance, the gate drive loops must be reduced as much as possible. for the low - side driver, the return of the drive loop must be dire ctly connected to the com pin of the ic and separate with signal ground (power ground and signal ground have star connection at com pin). supply capacitor: it is recommended to place a bypass capacitor (c in ) between the v cc and com pins. a 1f ceramic c apacitor is suitable for most applications. this component should be placed as close as possible to the pins in order to reduce parasitic elements. c bs capacitor: the c bs capacitor should be placed as close as possible to the vb and vs pins. routing and placement: 1) the ic has only one com pin for both signal return and power return, so it is strongly recommended to route the signal ground and power ground separately and with a star connection at the com pin. 2) the rt pin provides a current referen ce for the internal oscillator and needs to be kept as clean as possible to avoid frequency jittering or duty - cycle mismatch between high - side and low - side. the components connected to this pin must keep away from the high frequency switching loop such as the gate driver loop and the vs node. the pcb traces connected to rt pin also need to be kept away from any switching node. 3) connect ct capacitor directly to com pin, don?t share the return with any other signal ground. irs27951s IRS27952(4)s 19 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 layout example: additional documentation please refer to application note an - 1160 for more design details of irs2795( 1,2)(4). several technical documents related to the use of hvics are also available at www.irf.com ; use the site search function and the document number to quickly locate them. below is a short list of some of these documents. an - 1160: design of resonant half - bridge converter using irs2795(1,2) control ic dt97 - 3: managing transients in control ic driven power stages supply bypass capacitors are close to ic pins. star connection at com pin signal components are kept away from switching nodes vs node irs27951s IRS27952(4)s 20 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 figure 7: supply current vs. supply voltage figure 8: undervoltage lockout vs. temperature figure 9: icc quiescent currrent vs. temperature figure 10: startup current and sleep current vs. temperature 0.01 0.1 1 10 5.0 v 7.5 v 10.0 v 12.5 v 15.0 v 17.5 v i supply (ma) supply voltage 8.0 v 8.5 v 9.0 v 9.5 v 10.0 v 10.5 v 11.0 v 11.5 v 12.0 v -50 c 0 c 50 c 100 c 150 c vcc uvlo thresholds temperature vcc uv+ vcc uv- 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 -50 c 0 c 50 c 100 c 150 c i qcc quiescent current (ma) temperature i qcc 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 -50 c 0 c 50 c 100 c 150 c current (ua) temperature i ccstart and i sleep isleep iccstart irs27951s IRS27952(4)s 21 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 figure 11: icc supply currrent @1nf load vs. temperature figure 12: vbs undervoltage lockout vs. temperature figure 13: ibs currrent @1nf load vs. temperature figure 14: dead - time vs temperature 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 -50 c 0 c 50 c 100 c 150 c i cc supply current (ma) temperature icc @46khz, c load =1nf 7.0 v 7.5 v 8.0 v 8.5 v 9.0 v -50 c 0 c 50 c 100 c 150 c vbs uvlo thresholds temperature vbs uv+ vbs uv- 0.97 0.98 0.99 1.00 1.01 1.02 1.03 1.04 -50 c 0 c 50 c 100 c 150 c ibs supply current (ma) temperature ibs @46khz, c load =1nf 200.0 205.0 210.0 215.0 220.0 225.0 230.0 -50 c 0 c 50 c 100 c 150 c dead time (ns) temperature dead time @ ct=200pf irs27951s IRS27952(4)s 22 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 figure 15: switching frequency vs. temperature figure 16: switching frequency vs. temperature figure 17: gate output tr and tf time @ 1nf load vs. temperature figure 18: vs negative transient safety operation area 44.0 44.5 45.0 45.5 46.0 46.5 47.0 47.5 48.0 48.5 49.0 -50 c 0 c 50 c 100 c 150 c switching frequency (khz) temperature frequency @ ct=200pf, rt=50.5k ? 269 273 277 281 285 289 293 297 -50 c 0 c 50 c 100 c 150 c switching frequency (khz) temperature frequency @ ct=200pf, rt=7.32k ? 5 ns 15 ns 25 ns 35 ns 45 ns 55 ns 65 ns 75 ns 85 ns 95 ns -50 c 0 c 50 c 100 c 150 c gate tr and tf @ 1nf load temperature tr_ho tr_lo tf_ho tf_lo 0 10 20 30 40 50 60 70 80 1e - 7 2e - 7 3e - 7 4e - 7 5e - 7 6e - 7 7e - 7 8e - 7 9e - 7 1e - 6 voltage (v) pulse width (s) irs2795(1,2) - vs spike soa failure voltage irs27951s IRS27952(4)s 23 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 package details: soic8n irs27951s IRS27952(4)s 24 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 package details: soic14n irs27951s IRS27952(4)s 25 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 tape and reel details: soic8n carrier tape dimension for 8soicn code min max min max a 7.90 8.10 0.311 0.318 b 3.90 4.10 0.153 0.161 c 11.70 12.30 0.46 0.484 d 5.45 5.55 0.214 0.218 e 6.30 6.50 0.248 0.255 f 5.10 5.30 0.200 0.208 g 1.50 n/a 0.059 n/a h 1.50 1.60 0.059 0.062 reel dimensions for 8soicn code min max min max a 329.60 330.25 12.976 13.001 b 20.95 21.45 0.824 0.844 c 12.80 13.20 0.503 0.519 d 1.95 2.45 0.767 0.096 e 98.00 102.00 3.858 4.015 f n/a 18.40 n/a 0.724 g 14.50 17.10 0.570 0.673 h 12.40 14.40 0.488 0.566 metric imperial metric imperial e f a c d g a b h note : controlling dimension in mm loaded tape feed direction a h f e g d b c irs27951s IRS27952(4)s 26 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 tape and reel details: soic14n carrier tape dimension for 14soicn code min max min max a 7.90 8.10 0.311 0.318 b 3.90 4.10 0.153 0.161 c 15.70 16.30 0.618 0.641 d 7.40 7.60 0.291 0.299 e 6.40 6.60 0.252 0.260 f 9.40 9.60 0.370 0.378 g 1.50 n/a 0.059 n/a h 1.50 1.60 0.059 0.062 reel dimensions for 14soicn code min max min max a 329.60 330.25 12.976 13.001 b 20.95 21.45 0.824 0.844 c 12.80 13.20 0.503 0.519 d 1.95 2.45 0.767 0.096 e 98.00 102.00 3.858 4.015 f n/a 22.40 n/a 0.881 g 18.50 21.10 0.728 0.830 h 16.40 18.40 0.645 0.724 metric imperial metric imperial e f a c d g a b h note : controlling dimension in mm loaded tape feed direction a h f e g d b c irs27951s IRS27952(4)s 27 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 part marking information soic8 sxxxxx ir logo yww ? part number date code pin 1 identifier lot code ( prod mode ? 4 digit spn code ) assembly site code per scop 200 - 002 ? xxxx marking code lead free released non - lead free released ? p soic14 irsxxxxx ir logo yww ? part number date code pin 1 identifier lot code (prod mode ? 4 digit spn code) assembly site code per scop 200-002 ? xxxx marking code lead free released non-lead free released ? p irs27951s IRS27952(4)s 28 www.irf.com ? 20 12 international rectifier n ovember 8 th , 2012 qualification information ? qualification level industrial ?? comments: this family of ics has passed jedec?s industrial qualification. ir?s consumer qualification level is granted by extension of the higher industrial level. moisture sensitivity level soic8n msl2 ??? 260c (per ipc/jedec j - std - 020c) soic14n msl2 ??? 260c (per ipc/jedec j - std - 020) esd machine model class b (per jedec standard eia/jesd22 - a115 - a) human body model class 2 (per eia/jedec standard jesd22 - a114 - b) ic latch - up test class i, level a (per jesd78a) rohs compliant yes ? qualification standards can be found at international rectifier?s web site http://www.irf.com/ ?? higher qualification ratings may be available should the user have such requirements. please contact your international rectifier sales representative for further information. ??? higher msl ratings may be available for the specific package types listed here. please contact your international rectifier sales representative for further information. the information provided in this document is believed to be accurate and reliable. however, international rectifier assumes n o responsibility for the consequences of the use of this information. international rectifier assumes no responsibility for any in fringement of patents or of other rights of third parties which may result from the use of this information. no license is granted by implication or otherwise under any patent or patent rights of international rectifier. the specifications mentioned in t his document are subject to change without notice. this document supersedes and replaces all information previously supplied. for technical support, please contact ir?s technical assistance center htt p://www.irf.com/technical - info/ world headquarters: 233 kansas st., el segundo, california 90245 tel: (310) 252 - 7105 |
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