KA5M0365RN

www.fairchildsemi.com KA5x0365RN-SERIES KA5M0365RN, KA5L0365RN 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. Included PWM controller integrates the fixed frequency oscillator, the under voltage lock-out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shutdown protection, the over voltage protection, and the temperature compensated precision current sources for the loop compensation and the fault protection circuitry. Compared to a discrete MOSFET and a PWM controller or an RCCsolution, a Fairchild Power Switch(FPS) can reduce the 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 the cost effective design in either a flyback converter or a forward converter Precision Fixed Operating Frequency (67/50kHz) Low Start-up Current(Typ. 100uA) Pulse by Pulse Current Limiting Over Current Protection Over Voltage Protection (Min. 25V) Internal Thermal Shutdown Function Under Voltage Lockout Internal High Voltage Sense FET Auto-Restart Mode Applications • SMPS for VCR, SVR, STB, DVD & DVCD • SMPS for Printer, Facsimile & Scanner • Adaptor for Camcorder 8-DIP 1.6.7.8 Drain 2.GND 3.Vcc 4.FB 5.NC Internal Block Diagram #3 VCC 32V 5V Vref Internal bias SFET #1,6,7,8 DRAIN Good logic OSC 9V 5µA S 1mA #4 FB R 2.5R 1R − 0.1V S − Thermal S/D + 27V L.E.B + + 7.5V − Q R Q #2 GND Power on reset OVER VOLTAGE S/D Rev.1.0.6 ©2003 Fairchild Semiconductor Corporation KA5X0365RN-SERIES Absolute Maximum Ratings (Ta=25°C, unless otherwise specified) Characteristic Symbol Value Unit VDGR 650 V VGS ±30 V KA5M0365RN, KA5L0365RN Drain-Gate Voltage (RGS=1MΩ) Gate-Source (GND) Voltage (1) IDM 3 ADC Continuous Drain Current (Ta=25°C) ID 0.42 ADC Continuous Drain Current (Ta=100°C) ID 0.28 ADC EAS 127 mJ VCC,MAX 30 V VFB -0.3 to VSD V PD 1.56 W Derating 0.0125 W/°C Operating Junction Temperature. TJ +160 °C Operating Ambient Temperature. TA -25 to +85 °C TSTG -55 to +150 °C Drain Current Pulsed Single Pulsed Avalanche Energy Maximum Supply Voltage Analog Input Voltage Range Total Power Dissipation Storage Temperature Range. (2) Note: 1. Repetitive rating: Pulse width limited by maximum junction temperature 2. L = 51mH, starting Tj = 25°C 3. L = 13µH, starting Tj = 25°C 2 KA5X0365RN-SERIES Electrical Characteristics (SenseFET Part) (Ta = 25°C unless otherwise specified) Parameter Symbol Condition Min. Typ. Max. Unit Drain-Source Breakdown Voltage BVDSS VGS=0V, ID=50µA 650 - - V VDS=Max. Rating, VGS=0V - - 50 µA Zero Gate Voltage Drain Current IDSS VDS=0.8Max. Rating, VGS=0V, TC=125°C - - 200 µA RDS(ON) VGS=10V, ID=0.5A - 3.6 4.5 Ω gfs VDS=50V, ID=0.5A 2.0 - - S - 314.9 - KA5M0365RN, KA5L0365RN Static Drain-Source on Resistance (Note) Forward Transconductance (Note) 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 VGS=0V, VDS=25V, f=1MHz VDD=0.5BVDSS, ID=1.0A (MOSFET switching time is essentially independent of operating temperature) VGS=10V, ID=1.0A, VDS=0.5BVDSS (MOSFET switching time is essentially independent of operating temperature) - 47 - - 9 - - 11.2 - - 34 - - 28.2 - - 32 - pF nS 11.93 - 1.95 - nC 6.85 Note: 1. Pulse test: Pulse width ≤ 300µS, duty ≤ 2% 2. 1 S = ---R 3 KA5X0365RN-SERIES Electrical Characteristics (Control Part) (Continued) (Ta = 25°C unless otherwise specified) Characteristic Symbol Test condition Min. Typ. Max. Unit UVLO SECTION Start Threshold Voltage VSTART VFB=GND 14 15 16 V Stop Threshold Voltage VSTOP VFB=GND 8.4 9 9.6 V FOSC KA5M0365RN 61 67 73 kHz FOSC KA5L0365RN 45 50 55 kHz - ±5 ±10 % 72 77 82 % OSCILLATOR SECTION Initial Accuracy Initial Accuracy Frequency Change With Temperature (2) Maximum Duty Cycle - -25°C≤Ta≤+85°C Dmax FEEDBACK SECTION Feedback Source Current IFB Ta=25°C, 0V24V PROTECTION SECTION Over Voltage Protection Thermal Shutdown Temperature (Tj) (1) 25 27 29 V 140 160 - °C VCC=14V - 100 170 µA VCC