www.fairchildsemi.com KA5P0680C 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) consist of high voltage power SenseFET and current mode PWM IC. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shut down protection, over voltage protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. compared to discrete MOSFET and controller or RCC switching converter solution, a Fairchild Power Switch(FPS) can reduce total component count, design size, and weight and at the same time increase efficiency, productivity, and system reliability.It has a basic platform well suited for cost effective design in PC SMPS with Power Saving function. Adjustable Switching Frequency Intelligent Power Saving Mode Pulse by Pulse Current Limiting Over Current Latch Protection Over Voltage Protection Internal Thermal Shutdown Function Built-in Soft Start Function Internal High Voltage Sense FET Auto-Restart Mode TO-220-5L 1 1. Drain 2. GND 3. VCC 4. FB 5. CT Internal Block Diagram Vcc 3 Drain 1 UVLO 15V/9V 2.5V Ct 5 OSC VCC VREF SenseFET CLK S 5uA VG Q R 900uA Feedback 4 VG LIMIT CIRCUIT BIAS GOOD LOGIC Vref 2.5R R Vs LEB Rsense 0.5V VZ 2 VCC SOFT-START (5mS)/( 0 ~ 5V ) PS MODE S Q R 2V 0.4V/0.6V 5uA 1mS OCL (Vs=1.1V) 0.7V OLP (Vfb=7V) OVP (Vcc=27V) S AUTO RESTART GND R Q OUTPUT OFF TSD (Tj=170 ℃) POWER-ON RESET S R Q OUTPUT OFF Shutdown Latch Rev.1.0.3 ©2003 Fairchild Semiconductor Corporation KA5P0680C Absolute Maximum Ratings (Ta=25°C, unless otherwise specified) Parameter Drain-Gate Voltage (RGS=1MΩ) Gate-Source (GND) Voltage Drain Current Pulsed (2) Single Pulsed Avalanche Energy (3) Symbol Value Unit VDGR 800 V VGS ±30 V IDM 24.0 ADC EAS 455 mJ Avalanche Current (4) IAS 27 A Continuous Drain Current (TC=25°C) ID 6.0 ADC Continuous Drain Current (TC=100°C) ID 4.0 ADC VCC,MAX 30 V VFB -0.3 to 7V V PD 150 W Darting 1.21 W/°C TA -25 to +85 °C TSTG -55 to +150 °C Maximum Supply Voltage Input Voltage Range Total Power Dissipation Operating Ambient Temperature Storage Temperature Note: 1. Tj = 25°C to 150°C 2. Repetitive rating: Pulse width limited by maximum junction temperature 3. L = 24mH, starting Tj = 25°C 4. L = 13µH, starting Tj = 25°C 2 KA5P0680C Electrical Characteristics (SFET Part) (Ta=25°C unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit Drain-Source Breakdown Voltage BVDSS VGS=0V, ID=50µA 800 - - V VDS=Max., Rating, VGS=0V - - 50 µA VDS=0.8Max., Rating, VGS=0V, TC=125°C - - 200 µA RDS(ON) VGS=10V, ID=4.0A - 1.6 2.0 Ω gfs VDS=15V, ID=4.0A 1.5 2.5 - S - 1600 - Zero Gate Voltage Drain Current Static Drain-Source on Resistance (Note) Forward Transconductance (Note) Input Capacitance IDSS 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 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=0.5BVDSS (MOSFET switching time are essentially independent of operating temperature) - 140 - - 42 - - 60 - - 150 - - 300 - - 130 - - 70 - - 16 - - 27 - pF nS nC Note: 1. Pulse test: Pulse width ≤ 300µS, duty ≤ 2% 2. 1 S = ---R 3 KA5P0680C Electrical Characteristics (Control Part) (Continued) (Ta=25°C unless otherwise specified) Parameter Symbol Test Condition Min. Typ. Max. Unit Start Threshold Voltage VSTART - 14 15 16 V Min.Operating Voltage After Turn On VSTOP - 8.4 9 9.6 V CT=2n 61 67 73 kHz ∆FOSC -25°C < Ta ≤ 85°C 0 ±5 ±10 % Maximum Duty Cycle DMAX RT=21kΩ 85 88 91 % Offset Voltage Voffset 0.5 0.55 0.6 % UVLO SECTION OSCILLATOR SECTION Initial Frequency Temperature Stability FOSC (Note 1) - FEEDBACK SECTION Feedback Source Current IFB Vsc = 0V 0.9 1.1 1.3 mA Shutdown Feedback Voltage Vsd Vfb ≥ 6V 6.3 6.9 7.5 V 4 5 6 µA 3.52 4 4.48 A 25 27 29 V 150 170 - °C Shutdown Delay Current IDELAY 4V ≤ Vfb ≤ Vsd CURRENT LIMIT (SELF-PROTECTION) SECTION Peak Current Limit IOVER Max. inductor current VOVP Vcc ≥ 22V PROTECTION SECTION Over Voltage Protection Thermal Shutdown Temp. TSD - POWER-SAVING MODE SECTION Power Saving Mode Feedback Volt. VF(PS) VCC=16V 0.3 0.4 0.5 V Power Saving Reset Feedback Volt. VF(RE) VCC=16V 0.5 0.6 0.7 V Power Saving Current IPS VCC=16V - 0.3 0.4 mA Power Saving Mode Fb Current Ipfb VCC=16V 3 4 5 uA TOTAL DEVICE SECTION Start Up Current Operating Supply Current Istart Vcc=14V - 0.1 0.2 mA IOP Vcc ≤ 28V - 10 18 mA Note: 1. These parameters, although guaranteed, are not 100% tested in production 4 KA5P0680C Typical Performance Characteristics vs tart Is tart 16.00 0.15 15.50 0.12 mA V 15.00 0.09 14.50 0.06 14.00 0.03 -25 0 25 50 75 100 125 150 -25 0 25 50 temp 125 150 125 150 Figure 2. Stop Threshold Voltage vs top V ov p 9.60 29.00 9.30 28.00 9.00 V 8.70 27.00 26.00 8.40 25.00 -25 0 25 50 75 100 125 150 -25 0 25 50 temp 75 100 temp Figure 3. Start Up Current Figure 4. Over Voltage Protection Idelay If b mA 100 temp Figure 1. Start Threshhold Voltage V 75 1.10 6.00 1.00 5.50 uA 0.90 5.00 4.50 0.80 4.00 0.70 -25 0 25 50 75 100 temp Figure 5. Feedback Source Current 125 150 -25 0 25 50 75 100 125 150 temp Figure 6. Shutdown Delay Current 5 KA5P0680C Typical Performance Characteristics (Continued) Vsd Iover 4.50 7.50 4.25 7.20 A V 6.90 4.00 6.60 3.75 3.50 6.30 -25 0 25 50 75 100 125 -25 150 0 25 50 Figure 7. Shutdown Feedback Voltage 125 150 125 150 Ipfb 0.70 6 0.65 5 0.60 uA 0.55 4 3 0.50 2 -25 0 25 50 75 100 125 150 -25 0 25 temp 50 75 100 temp Figure 9. Power-Saving Reset Feedback Voltage Figure 10. Power-Saving Mode Feedback Current Ips VF(PS) 400 0.50 300 0.45 V uA 200 0.40 0.35 100 0.30 0 -25 0 25 50 75 100 temp Figure 11. Power-Saving Current 6 100 Figure 9. Peak Current Limit VF(RE) V 75 temp temp 125 150 -25 0 25 50 75 100 125 150 temp Figure 12. Power-Saving Mode Feedback Voltage KA5P0680C Typical Performance Characteristics (Continued) Fosc Khz Dmax 73.00 91.00 70.00 89.50 % 67.00 86.50 64.00 85.00 61.00 -25 0 25 50 75 temp Figure 13. Operating Freguency 7 88.00 100 125 150 -25 0 25 50 75 100 125 150 temp Figure 14. Maximum Duty Cycle KA5P0680C Package Dimensions TO-220-5L 8 KA5P0680C Package Dimensions (Continued) TO-220-5L(Forming) 9 KA5P0680C Ordering Information Product Number KA5P0680CTU KA5P0680CYDTU Package TO-220-5L TO-220-5L(Forming) Rating Topr (°C) 800V, 6A -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