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 + 32V + -1% - 11V on 12V off Burst Mode 3.5V/1.25V Internal BIAS - VCC DRAIN 3 1 + VREF - + UVLO 15V/9V + Ro nRon S SYNC + 5 OSC - Normal Mode 4.6V/2.6V LEB 450ns Ifb 4 - 2.5R R Idelay 1V + Offset + - Delay 80ns + 7.5V Sync 12V - S OLP + - Power on Reset Q OCL R Q OVP Rof Roff f R VREF FEEDBACK QB Thermal Shut Down S R + - Rsense 1V 2 SOURCE Power on Reset (VCC=6.5V) Rev.1.0.4 ©2003 Fairchild Semiconductor Corporation KA5Q0740RT Absolute Maximum Ratings (Ta=25°C, unless otherwise specified) Parameter Drain-Gate Voltage (RGS=1MΩ) Gate-Source (GND) Voltage Drain Current Pulsed (2) (3) Single Pulsed Avalanch Current (Energy (2) Value Unit VDGR 400 V VGS ±30 V IDM 18.4 ADC IAS(EAS) 20(360) A(mJ) Continuous Drain Current (Tc = 25°C) ID 4.6 ADC Continuous Drain Current (TC=100°C) ID 2.9 ADC VCC 40 V Vsync -0.3 to 13V V VFB -0.3 to VCC V PD 42 W Derating 0.33 W/°C Operating Junction Temperature TJ +160 °C Operating Ambient Temperature TA -25 to +85 °C Storage Temperature Range TSTG -55 to +150 °C Thermal Resistance Rthjc 2.98 °C/W Supply Voltage Analog Input Voltage Range Total Power Dissipation ) Symbol Notes: 1. Tj = 25°C to 150°C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L = 30mH, VDD = 50V, RG = 25Ω, starting Tj = 25°C 4. L = 13uH, starting Tj = 25°C 2 KA5Q0740RT Electrical Characteristics (SFET Part) (Ta=25°C unless otherwise specified) Parameter Symbol Drain-Source Breakdown Voltage BVDSS Zero Gate Voltage Drain Current Static Drain-source on Resistance (Note) IDSS RDS(ON) Input Capacitance Ciss 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 Condition VGS = 0V, ID = 50µA Min. Typ. Max. Unit 400 - - V VDS = Max, Rating, VGS = 0V - - 200 µA VDS= 0.8*Max., Rating VGS = 0V, TC = 85°C - - 300 µA VGS = 10V, ID = 2.3A - 0.9 1.1 Ω - 710 - 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) - 90 - - 10 - - 15 - - 55 - - 55 - - 50 - - 20 26 - 4.0 - - 7.3 - pF nS nC Note: 1. Pulse test : Pulse width ≤ 300µS, duty ≤ 2% 3 KA5Q0740RT Electrical Characteristics (Continued) (Ta=25°C 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 18 20 22 kHz 12V ≤ Vcc ≤ 23V 0 1 3 % -25°C ≤ Ta ≤ 85°C 0 ±5 ±10 % OSCILLATOR SECTION Initial Frequency FOSC Voltage Stability FSTABLE - 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 µA 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=25°C 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 Burst mode Enable Feedback Voltage Burst mode Peak Current Limit VBEN Vcc = 10.5V 0.7 1.0 1.3 V IBU_PK Vcc = 10.5V 0.65 0.85 1.1 A Ifb = 700uA, Vfb = 4V 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 PRIMARY SIDE REGULATION SECTION Primary Regulation Threshold Voltage VPR Primary Regulation Transconductance GPR 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.(ºC) 100℃ 125℃ 150℃ -25℃ 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 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.(ºC) 0.90 0.85 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 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.(ºC) 100℃ 125℃ 150℃ -25℃ 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 100℃ 125℃ 150℃ -25℃ 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 100℃ 125℃ Figure 11. ShutDown Delay Current 150℃ -25℃ 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 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.(ºC) 100℃ 125℃ 150℃ 0.90 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 100℃ 125℃ 150℃ -25℃ 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 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.(ºC) 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.(ºC) 100℃ 125℃ -25℃ 150℃ Figure 19. Peak Current Limit 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 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.(ºC) 100℃ 125℃ -25℃ 150℃ Figure 21. Normal Mode Sync. High Threshold Voltage 0℃ 25℃ 50℃ 75℃ Temp.(ºC) 100℃ 125℃ 150℃ Figure 21. Normal Mode Sync. Low Threshold Voltage Typical Performance Characteristics(MOSFET Part) EAS-TCH 500 Zθ JC(t), Thermal Response AVALANCHE ENERGY EAS [mJ] 0 10 400 300 200 100 0 25 D=0.5 0.2 ※ Notes : 1. Zθ JC(t) = 1.32 ℃/W Max. 2. Duty Factor, D=t1/t2 3. TJM - TC = PDM * Zθ JC(t) 0.1 -1 10 0.05 0.02 0.01 single pulse -2 50 75 100 125 CHANNEL TEMPERATURE Tch [℃] Figure 22. Temperature (TC) vs. Eas Curve 150 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 10 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 KA5Q0740RTTU KA5Q0740RTYDTU Package TO-220F-5L TO-220F-5L(Forming) Operating Temp. -25°C to +85°C 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 8/25/03 0.0m 001 Stock#DSxxxxxxxx 2003 Fairchild Semiconductor Corporation