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| TA1307P TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA1307P Integrated Circuit For Standby Power-Supply Control TA1307P is a switching power-supply IC used as a standby power-supply control such as small power-supply. This IC, Slight power-supply can do that a MOSFET is controlled in intermittent, and this IC is optimum IC as objects for power-supply control, such as color TV, monitor, VCR, DVD, FAX, printer, etc. Main Characteristics * * * Burst mode PWM pulse output The over current protection circuits to power MOSFET for a drive are built in. UVLO (Under Voltage Lock Out), OVLO (Over Voltage Lock Out) with Latch, OVLO on/off function OCL (Over Current Limmiter), Select SW for IC active/IC not active are built in. * * The starting current until UVLO is canceled about 100 A. Wide range input voltage: (85 V to 264 V). Weight: 0.5 g (typ.) 1 2002-02-12 TA1307P Stand Power Supply Application Circuit Example (voltage detection by 2nd side) Pulse out GND2 GND1 8 7 6 OCL 5 Pulse output Band gap UVLO 7 V/5 V UVLO 12 V Latch OSC establish OSC Output stop 0.2 V 3 V (pulse output stop) /2.5 V (pulse output start) Standby ON/OFF Vout Standby SW FB Vcc 1 0.01 mF 20 mF 2 3 0.01 mF 4 Hi: Standby OFF mode ...IC not active Pin2 (OSC establish) Low: Standby ON mode (OVLO off) ...IC active Outside resistance use 2% Open: Standby ON mode (OVLO on) ...IC active 3 V (fix) = Upper limit DC for FB comparator FB IN 2.5 V (fix) = Lower limit DC for FB comparator PULSE Output expansion OSC Wave PULSE Output FB IN (Vout) Figure 1 Movement Explain 2 2002-02-12 TA1307P With outputting burst switching control pulse from IC, burst enegize of the TRANS is carried out. Voltage stabilized also at the time of a light load can be supplied. It is the optimum IC for constituting the power-supply system for minute electric-power supply. By this IC, the burst time of switching control pulse is decided by level of output ripple of a power-supply system. As for the terminal 4 which is carrying out the monitor of the power-supply output-voltage value, another side is connected to the comparator. The standard voltage value of this comparator has hysterisis, 2.5 V and 3 V fixation. (inside IC) Since output DC voltage of a power supply is stabilized, power-supply output voltage is detected and it feedbacks for the terminal 4 (FB IN terminal). When the voltage value of a terminal 4 tends to become more than 3 V, switching control pulse of a terminal 7 (pulse out) is stopped. If pulse is stooped, in order not to control power-supply TRANS, it will stop supplying energy supplied to the output of a power supply, and the output DC voltage of a power-supply will descend. If output DC voltage tends to become less than (V/2.5), switching control pulse of a terminal 7 (pulse out) will be outputted. Power-supply TRANS is made to drive and PULSE supplies energy to a power-supply output. Then, output DC voltage rises. Burst electric supply is realized by repeating the above-mentioned operation. Vout Vcc IC R2 IF VF FB 4 Iz Vz = 3.9 V R1 Is R3 FB comparater Vref 2.5 V/3 V Figure 2 Ripple Voltage Establish (example) Hereafter, calculation using ripple level as an example Voltage of Vout and the terminal 2 is set output DC voltage to Vref. Vout = Vz + VF + 1/CTR R2/R1 Vref *CTR = IC/IF *IZ = IF + IS, R3 is set up. For example, R1 = 10 kW, R2 = R3 = 1 kW, CTR = about 1, Vz = 3.9 V, VF = 0.7 V Vref (minimum) = 2.5 V fixation and Vref (maximum) = 3 V fixation. Calculation Vout (minimum) = 4.85 V Vout (maximum) = 4.9 V. Ripple in an output is 0.05 V. Internal oscillation circuit for obtaining output PULSE is built in. Oscillation frequency of output PULSE can be set up by outside attachment resistance to a terminal 2. Duty about 50% of output PULSE has been obtained. Oscillation frequency is calculation from f = i/2 CV (Hz), I = 1 (V) /R/10, and it will be set to 25 kHz, if 20 kW is attached to a terminal 2 outside. Terminal voltage and R are outside attachment resistance in 1 (V). 10 is a current ratio, sets current of a terminal 2 to 1/10, and makes it the charge/discharge current of a internal 50 pF capacitor. C = 50 (pF) (built-in capacitor value) V = 2 (V) (oscillation amplitude) 3 2002-02-12 TA1307P In addition, there is a function below as a PROTECT circuits. A terminal 5 (OCL) detects the overcurrent of MOSFET connected to the terminal 7 (pulse out), and output Pulse is made to compulsion low at the time of an overcurrent. Output pulse will be made to compulsion low, if it flows into a terminal 7 (pulse out) and there is always 40 mA or more of current. Output pulse will be made to compulsion low, if the supply voltage of a terminal 1 (VCC) becomes more than 12 V.(OVLO) Circuit operation start of the UVLO function is carried out more than by 7 V, and it carries out a circuit operation stop less than 5 V. Pin Connection (top view) VCC OSC establish Standby SW FB IN 1 2 3 4 8 7 6 5 GND2 Pulse OUT GND1 OCL Pin2 (OSC establish) Outside resistance use 2% Maximum Ratings (Ta = 25C) Characteristics Supply Voltage Maximum Input Voltage Minimun Input Voltage Power Dissipation Operating Temperature Storage Temperature (Note 1) Symbol VCC max VIN max VIN min PD max Topr Tstg Rating 14 VCC + 0.3 GND - 0.3 817 -25~85 -55~150 Unit V V V mW C C Note 1: Derated above Ta = 25C in the proportion of 6.5 mW/C 4 2002-02-12 TA1307P 817 (mW) Power dissipation PD 425 0 25 85 150 Ta (C) Figure 3 Recommended Operating Condition Characteristics Power Supply Voltage Pin No. 1 Min 7.5 PD - Ta Curve Typ. 3/4 Max 11.5 Unit V Electrical Characteristics DC Characteristics (There is no designation Vcc = 9 V, Ta = 25C) (reference: a measurement circuit is figure 4) Characteristics Power Current (9 V) Symbol I1Load Pin No. 1 Test Condition Load of 100 pF is connected with Pin7. SW1 = ON, SW2 = b, SW3 = a Pin3 = Low voltage input (standby ON mode) SW1 = ON, SW2 = b, SW3 = b Power Current (9 V) I1off 1 Pin3 = Hi voltage input (standby OFF mode) SW1 = Open, SW2 = a, SW3 = b V3th L Pin3 Threshold Voltage V3th H 3 (Note 3) (Note 2) 3/4 0.9 0.7 0.7 0.5 3/4 V 0.05 0.09 0.13 mA Min 0.8 Typ. 1.2 Max 1.6 Unit mA Power Current (9 V) I1on 1 0.39 0.55 0.72 mA Note 2: V3 th L is threshold voltage "Standby ON (IC active) mode" Note 3: V3 th H is threshold voltage "Standby OFF (IC not active) mode" 5 2002-02-12 TA1307P 100 pF a 8 GND2 7 Pulse out b SW3 6 GND1 Standby SW 3 5 OCL FB IN 4 0.01 mF a b open SW2 150 kW a: Standby OFF mode ...IC not active b: Standby ON mode (OVLO off) ...IC active open: Standby ON mode (OVLO on) ...IC active 20 m F 43 kW Figure 4 9V Pin2 (OSC establish) Outside resistance use 2% DC Terminal Voltage Measurement Circuit 20 kW SW1 0.01 mF 1 OSC establish 2 VCC 6 2002-02-12 TA1307P AC Characteristics (there is no designation VCC = 9 V, Ta = 25C) (refer: Next page AC characteristic measurement, Figure 5 AC characteristic measurement circuit) Characteristics UVLO Movement Voltage Start Up Current Triangle Wave Oscillate Frequency (temperature margin -0.016% is contained) Output Pulse Rise Time (reference data) Output Pulse Fall Time TSPF (reference data) Output Pulse Max. Voltage Output Pulse Min. Voltage Output Current (source, sink) (reference data) Output Terminal (pin7) PROTECT Movement Current V7pt FB IN Terminal (pin4) FB Comparator THRESHOLD Hi Voltage FB IN Terminal (pin4) FB Comparator THRESHOLD Low Voltage OCL Terminal (pin5) V5pt PROTECT Movement Current VCC Terminal (pin1) OVLO Movement Voltage Standby SW Terminal (pin3) I StSW Movement Voltage FB IN Terminal (pin4) I FBIN Input Current 15 0.08 0.15 0.30 mA 14 0.5 0.7 0.9 V V1ovlo 13 11.5 12.0 12.5 V 12 0.18 0.2 0.22 V Vth4L 11 2.4 2.5 2.6 V Vth4H 10 2.9 3.0 3.1 V V7pt 9 30.0 40.0 3/4 mA IOPFC 8 27.0 40.0 53.0 mA VOPFMX VOPFMN 6 7 7.0 -0.1 7.5 0.1 8.0 0.65 V V 5 50 100 160 ns FOSC 3 20.2 25.0 29.8 kHz Symbol VUL VUH Istrt 2 Measurement Method No. 1 Min 4.6 6.6 30 Typ. 5.0 7.0 55 Max 5.5 7.4 90 mA Unit V TRPF 4 50 100 160 ns 7 2002-02-12 TA1307P AC Characteristics Measurement (there is no designation VCC = 9 V, Ta = 25C) (refer: Figure 5 AC characteristic measurement circuit) No. Characteristics 1 UVLO movement voltage (VUL/VUH) 1 b b a a SW mode 2 3 4 Pin4 (FB IN) = GND Confirm pin7 (pulse out) pulse is output. Vcc voltage is lowered, and measure Vcc voltage when pin7 output pulse disappears.(VUL) And Vcc voltage is upped, and measure Vcc voltage when pin7 output pulse appears.(VUH) Start Up Current Pin4 (FB IN) = GND Input voltage Vcc < 5.0 V 2 b b a a (= pin7 pulse is not outputted) And Vcc voltage is upped (Vcc = 9V) Measure source current through Vcc (I strt). Triangle Wave Oscillate Frequency 3 b b a a Pin4 (FB IN) = GND Confirm pin7 (pulse out) pulse is output. Measure pulse period, look for frequency. (Fosc) 4 Output Pulse Rise Time (reference data) Output Pulse Fall Time (reference data) Output Pulse Max. Voltage Output Pulse Min. Voltage Above condition, measure pulse rise time b b a a :pulse amplitude 10% to 90% (TRPF) Above condition, measure pulse fall time b b a a :pulse amplitude 10% to 90% (TSPF) b b b b a a a a Above condition, measure pulse Max. voltage. (VOPMX) Above condition, measure pulse Min. voltage. (VOPMN) Test Condition 5 6 7 8 2002-02-12 TA1307P AC Characteristics Measurement (there is no designation VCC = 9 V, Ta = 25C) (refer: Figure 5 AC characteristic measurement) No. Characteristics 1 Output Current 8 (source, sink) (reference data) Output Terminal (pin7) PROTECT Movement Current 9 b b a c Increase DC voltage for pin7 (FB IN) through resistance (100 W), pin7 pulse is made to output. pin7 DC voltage is upped, and measure pulse highest level voltage and increase DC voltage (V6) when pin7 pulse duty is began to become short. i7 pt is calculated by bottom type. I7pt = (pulse highest level voltage - V6 DC voltage) /100 W FB IN Terminal (pin4) 10 FB Comparator THRESHOLD Hi Voltage FB IN Terminal (pin4) 11 FB Comparator THRESHOLD Low Voltage OCL Terminal (pin5) PROTECT Movement Current 12 b b a a b a a a b a a a Increase DC voltage for pin4 (FB IN) (early value is 2.0 V) pin7 pulse is made to output. Pin4 DC voltage is upped, and measure pin4 voltage when pin7 pulse disappears. (Vth4H) And Pin4 DC voltage is lowered, and measure pin4 voltage when pin7 pulse appears.(Vth4L) Pin4 (FB IN) = GND. Confirm pin7 (pulse out) pulse is output. Pin5 (OCL) connect outside power supply. Pin5 DC voltage is upped, and measure pin5 voltage when pulse disappears. Vcc Terminal (pin1) OVLO Movement Voltage 13 d b a a Pin4 (FB IN) = GND Confirm pin7 (pulse out) pulse is output. Pin1 (Vcc) DC voltage is upped, and measure Vcc voltage when pulse disappears.(V1OVLO) Pin4 (FB IN) = GND Confirm pin7 (pulse out) pulse is output. c b a a Pin3 (standby SW) connect outside power supply. Pin3 DC voltage is upped (early value is 0 V), and measure pin3 voltage when pulse disappears. FB IN Terminal (pin4) 15 Input Current b c a a Pin4 (FB IN) connect outside power supply (3.5 V). Measure pin4 current. b b a b SW mode 2 3 4 Measure pin7 (pulse out) current for using current probe. Test Condition Standby SW Terminal (pin3) Movement Voltage 14 9 2002-02-12 TA1307P V6 100kW 510 p b a c SW4 7 Pulse out 6 GND1 a V5 b SW3 5 OCL FB IN 4 a 8 GND2 OSC establish 2 1 0.01 mF 20 kW 20 m F 9V 0.01 mF SW1 c a bd V1 V2 SW2 c b A V4 Standby SW 3 A VCC V3 Pin2 (OSC establish) Outside resistance use 2% a: Standby OFF mode ...IC not active b: Standby ON mode (OVLO off) ...IC active open: Standby ON mode (OVLO on) ...IC active Figure 5 AC Characteristics Measurement Circuit 10 2002-02-12 TA1307P Package Dimensions Weight: 0.5 g (typ.) 11 2002-02-12 TA1307P RESTRICTIONS ON PRODUCT USE 000707EBA * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice. 12 2002-02-12 |
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