www.fairchildsemi.com KA5Q0740RT Fairchild Power Switch(FPS) Features Description * * * * * * * * * The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power Switch(FPS) consists of a high voltage power SenseFET and a current mode PWM IC. The integrated PWM controller includes the fixed oscillator, the under voltage lock out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shut down protection, the over voltage protection, and the temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and a controller or a RCC switching converter solutions, a Fairchild Power Switch(FPS) can reduce the total number of components, design size, and weight, so it will improve efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective design in a quasi-resonant converter as a C-TV power supply. Quasi Resonant Converter Controller Internal Burst Mode Controller for Stand-by Mode Pulse by Pulse Current Limiting Over Current Latch Protection Over Voltage Protection ( Vsync: Min. 11V ) Internal Thermal Shutdown Function Under Voltage Lockout Internal High Voltage Sense FET Auto-Restart Mode TO-220F-5L 1. Drain 2. GND 3. VCC 4. Feedback 5. Sync Internal Block Diagram 3 + PSR REF. Sync. REF. Sync Internal Bias Burst mode controller OSC 5 S + + 1 Drain UVLO _ Q Ron R OVP Feedbock Vref VCC LEB 4 Roff PWM Ifb + Vfb offset Ids + Vds REF. Rsense S TSD 150 Power-on Reset Q R Delay + OCL REF. 22 GND Rev.1.0.1 (c)2001 Fairchild Semiconductor Corporation KA5Q0740RT Absolute Maximum Ratings (Ta=25C, unless otherwise specified) Parameter Drain-source(GND) voltage (1) Drain-Gate Voltage (RGS=1M) Symbol Value Unit VDSS 400 V VDGR 400 V Gate-source (GND) Voltage VGS 30 V Drain current pulsed (2) IDM 18.4 ADC Single pulsed avalanche energy (3) EAS 360 mJ IAS 20 A Continuous drain current (Tc = 25C) ID 4.6 ADC Continuous drain current (TC=100C) ID 2.9 ADC VCC 40 V Vsync -0.3 to 13V V VFB -0.3 to VCC V Avalanche current (4) Supply voltage Analog input voltage range PD(Watt H/S) 42 W Derating 0.33 W/C Operating temperature TOPR -25 to +85 C Thermal Resistance Rthjc 2.98 C/W Storage Temperature TSTG -55 to +150 C Total Power Dissipation Notes: 1. Tj = 25C to 150C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L = 30mH, VDD = 50V, RG = 25, starting Tj = 25C 4. L = 13uH, starting Tj = 25C 2 KA5Q0740RT Electrical Characteristics (SFET part) (Ta=25C unless otherwise specified) Parameter Symbol Drain-source breakdown voltage BVDSS Zero gate voltage drain current Static drain-source on resistance (note) IDSS Condition Min. Typ. Max. Unit 400 - - V VDS = Max, Rating, VGS = 0V - - 200 A VDS= 0.8*Max., Rating VGS = 0V, Ta = 125C - - 300 A VGS = 0V, ID = 50A RDS(ON) VGS = 10V, ID = 2.3A - 0.9 1.1 Forward transconductance (note) gfs VDS = 50V, ID = 2.3A 6.0 - - S Input capacitance Ciss - 710 - - 90 - - 10 - Output capacitance Coss Reverse transfer capacitance Crss Turn on delay time td(on) Rise time Turn off delay time Fall time tr td(off) tf Total gate charge (gate-source+gate-drain) Qg Gate source charge Qgs Gate drain (Miller) charge Qgd VGS = 0V, VDS = 25V, f = 1MHz VDD= 0.5BVDSS, ID= 7.0A (MOSFET switching time are essentially independent of operating temperature) VGS = 10V, ID = 7.0A, VDS = 0.5B VDSS (MOSFET Switching time are Essentially independent of operating temperature) - 15 - - 55 - - 55 - - 50 - - 20 26 - 4.0 - - 7.3 - pF nS nC Note: 1. Pulse test : Pulse width 300S, duty 2% 12. S = --R 3 KA5Q0740RT Electrical Characteristics (Ta=25C unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit UVLO SECTION Start Threshold Voltage VSTART VFB = GND 14 15 16 V Stop Threshold Voltage VSTOP VFB = GND 8 9 10 V Drain to PKG Breakdown voltage BVpkg 60HZ AC, Ta = 25C 3500 - - V Drain to Source Breakdown voltage BVdss Ta = 25C 400 - - V SENSEFET SECTION Drain to Source Leakage current Idss Vdrain = 400V, Ta = 25C - - 200 uA Initial Frequency FOSC - 18 20 22 kHz Voltage Stability FSTABLE 12V Vcc 23V 0 1 3 % -25C Ta 85C 0 5 10 % OSCILLATOR SECTION Temperature Stability (note2) FOSC Maximum Duty Cycle DMAX - 92 95 98 % Minimum Duty Cycle DMIN - - - 0 % FEEDBACK SECTION Feedback Source Current IFB VFB = GND 0.7 0.9 1.1 mA Shutdown Feedback Voltage VSD Vfb 6.9V 6.9 7.5 8.1 V IDELAY VFB = 5V 4 5 6 A Shutdown Delay Current PROTECTION SECTION Over Voltage Protection VOVP Vsync 11V 11 12 13 V Over Current Latch Voltage (Note2) VOCL - 0.9 1.0 1.1 V TSD - 140 160 - C Thermal Shutdown Temp. Note: 1. These parameters is the current flowing in the Control IC. 2. These parameters, although guaranteed, are tested in EDS(wafer test) process. 3. These parameters indicate Inductor Current. 4 KA5Q0740RT Electrical Characteristics (Continued) (Ta=25C unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit Sync SECTION Normal Sync High Threshold Voltage VNSH Vcc = 16V, Vfb = 5V 4.0 4.6 5.2 V Normal Sync Low Threshold Voltage VNSL Vcc = 16V, Vfb = 5V 2.3 2.6 2.9 V Burst Sync High Threshold Voltage VBSH Vcc = 10.5V, Vfb = 0V 3.2 3.6 4.0 V Burst Sync Low Threshold Voltage VBSL Vcc = 10.5V, Vfb = 0V 1.1 1.3 1.5 V BURST MODE SECTION Burst mode Low Threshold Voltage VBURL Vfb = 0V 10.4 11.0 11.6 V Burst mode High Threshold Voltage VBURH Vfb = 0V 11.4 12.0 12.6 V VBEN Vcc = 10.5V 0.7 1.0 1.3 V IBU_PK Vcc = 10.5V 0.65 0.85 1.0 A Ifb = 700uA, Vfb = 4V Burst mode Enable Feedback Voltage Burst mode Peak Current Limit PRIMARY SIDE REGULATION SECTION Primary Regulation Threshold Voltage VPR Primary Regulation Transconductance GPR 32.0 32.5 33.0 V - 2.0 2.6 - mA/V - 4.4 5.0 5.6 A - 0.1 0.2 mA - 10 18 mA CURRENT LIMIT(SELF-PROTECTION)SECTION Peak Current Limit(Note3) IPK TOTAL DEVICE SECTION Start Up Current Operating supply current (Note1) ISTART Vfb = GND, VCC = 14V IOP Vfb = GND, VCC = 16V IOP(MIN) Vfb = GND, VCC = 10V IOP(MAX) Vfb = GND, VCC = 28V Note: 1. These parameters is the current flowing in the Control IC. 2. These parameters, although guaranteed, are tested in EDS(wafer test) process. 3. These parameters indicate Inductor Current. 5 KA5Q0740RT Typical Performance Characteristics 1.10 1.10 1.05 1.06 1.00 1.02 0.95 0.98 0.90 0.94 0.90 0.85 -25 0 25 50 75 Temp.(C) 100 125 150 -25 0 25 50 75 Temp.(C) 100 125 150 100 125 150 125 150 Figure 2. Stop Voltage Figure 1. Start Voltage 1.10 1.08 1.05 1.01 1.00 0.94 0.95 0.87 0.90 0.85 0.80 -25 0 25 50 75 Temp.(C) 100 125 150 -25 1.10 1.10 1.05 1.06 1.00 1.02 0.95 0.98 0.90 0.94 50 75 Temp.(C) 0.90 0.85 0 25 50 75 Temp.(C) 100 Figure 5. Initial Frequency 6 25 Figure 4. Operating Current Figure 3. Stand by Current -25 0 125 150 -25 0 25 50 75 Temp.(C) 100 Figure 6. Maximum Duty KA5Q0740RT Typical Performance Characteristics (Continued) 1.50 1.20 1.20 1.12 0.90 1.04 0.60 0.96 0.30 0.88 0.80 0.00 -25 0 25 50 75 Temp.(C) 100 125 150 -25 0 25 50 75 Temp.(C) 100 125 150 Figure 8. Feedback Source Current Figure 7. Feedback Offset Voltage 1.10 1.10 1.06 1.06 1.02 1.02 0.98 0.98 0.94 0.94 0.90 0.90 -25 0 25 50 75 Temp.(C) 100 125 150 -25 0 25 50 75 Temp.(C) 100 125 150 Figure 10. Shutdown Feedback Voltage Figure 9. Over Voltage Protection 1.10 1.40 1.05 1.20 1.00 1.00 0.95 0.80 0.90 0.60 0.85 -25 0 25 50 75 Temp.(C) 100 125 Figure 11. ShutDown Delay Current 150 -25 0 25 50 75 Temp.(C) 100 125 150 Figure 12. Burst Mode Enable Feedback Voltage 7 KA5Q0740RT Typical Performance Characteristics (Continued) 1.10 1.10 1.06 1.06 1.02 1.02 0.98 0.98 0.94 0.94 0.90 0.90 -25 0 25 50 Temp.(C) 75 100 125 -25 1.10 1.10 1.06 1.06 1.02 1.02 0.98 0.98 0.94 0.94 0.90 50 75 Temp.(C) 100 125 150 0.90 0 25 50 75 Temp.(C) 100 125 150 -25 0 25 50 75 Temp.(C) 100 125 150 Figure 15. Burst Mode Sync. High Threshold Voltage Figure 16. Burst Mode Sync. Low Threshold Voltage 1.10 1.20 1.06 1.12 1.02 1.04 0.98 0.96 0.94 0.88 0.80 0.90 -25 0 25 50 75 Temp.(C) 100 Figure 17. Primary Voltage 8 25 Figure 14. Burst Mode High Threshold Voltage Figure 13. Burst Mode Low Threshold Voltage -25 0 125 150 -25 0 25 50 75 Temp.(C) 100 Figure 18. Primary Mode Gain 125 150 KA5Q0740RT Typical Performance Characteristics (Continued) 1.10 1.10 1.06 1.06 1.02 1.02 0.98 0.98 0.94 0.94 0.90 0.90 -25 0 25 50 75 Temp.(C) 100 125 -25 150 Figure 19. Peak Current Limit 0 25 50 75 Temp.(C) 100 125 150 Figure 20. Burst Mode Peak Current Limit 1.10 1.10 1.06 1.06 1.02 1.02 0.98 0.98 0.94 0.94 0.90 0.90 -25 0 25 50 75 Temp.(C) 100 125 -25 150 Figure 21. Normal Mode Sync. High Threshold Voltage 0 25 50 75 Temp.(C) 100 125 150 Figure 21. Normal Mode Sync. Low Threshold Voltage Typical Performance Characteristics(MOSFET Part) EAS-TCH 10 400 Z JC(t), Thermal Response AVALANCHE ENERGY EAS [mJ] 500 300 200 100 0 25 D=0.5 0.2 75 100 125 CHANNEL TEMPERATURE Tch [] Figure 22. Temperature (TC) vs. Eas Curve 150 Notes : 1. Z JC(t) = 1.32 /W Max. 2. Duty Factor, D=t1/t2 3. TJM - TC = PDM * Z JC(t) 0.1 10 -1 0.05 0.02 0.01 single pulse 10 50 0 -2 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 t1, Square Wave Pulse Duration [sec] Figure 23. Transient Thermal Response Curve 9 KA5Q0740RT Package Dimensions TO-220F-5L 10 KA5Q0740RT Package Dimensions (Continued) TO-220F-5L(Forming) 11 KA5Q0740RT Ordering Information Product Number KA5Q0740RT-TU KA5Q0740RT-YDTU Package TO-220F-5L TO-220F-5L(Forming) Operating Temp. -25C to +85C TU : Non Forming Type YDTU : Forming Type DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 2/18/02 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation