SPS - Fairchild
Description
SPS
KA1H0380R
SPS
TO-220F-4L
The SPS product family is specially designed for an off-line SMPS with minimal external components.
The SPS 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 SPS can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability.
It has a basic platform well suited for cost effective design in either a flyback converter or a forward converter.
1.
GND 2.
DRAIN 3.
VCC 4.
FB
FEATURES ORDERING INFORMATION
• • • • • • • • Precision fixed operating frequency (100kHz) Pulse by pulse over current limiting Over Current Protection Over Voltage Protection (Min.
23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto restart Device KA1H0380R Package TO-220F-4L Operating Temperature −25°C to +85°C
BLOCK DIAGRAM
#3 VCC 32V 5V Vref Good logic OSC 9V 5µ A #4 FB 2.
5R 1R + 7.
5V − + 25V − Thermal S/D OVER VOLTAGE S/D 1mA − + S R L.
E.
B 0.
1V S R Q #1 GND Q Internal bias #2 DRAIN SFET
Power on reset
Rev.
B
1
© 1999 Fairchild Semiconductor Corporation
KA1H0380R
SPS
ABSOLUTE MAXIMUM RATINGS
Characteristic Drain-source (GND) voltage (1) Drain-Gate voltage (RGS=1MΩ) Gate-source (GND) voltage Drain current pulsed
(4) (2)
Symbol VDSS VDGR VGS IDM EAS IAS ID ID VCC VFB PD (watt H/S) Derating TOPR TSTG
Value 800 800 ±30 12 95 − 3.
0 2.
1 30 −0.
3 to VSD 35 0.
28 −25 to +85 −55 to +150
Unit V V V ADC mJ A ADC ADC V V W W/°C °C °C
Single pulsed avalanche energy (3) Avalanche current Continuous drain current (TC=25°C) Continuous drain current (TC=100°...
Similar Datasheet
