VIPer20SP - STMicroelectronics

VIPer20SP SMPS PRIMARY I.C.

VIPer20/20A, made BLOCK DIAGRAM OSC PENTAWATT HV (022Y) 10 1 PowerSO-10 DIP-8 using VIPower M0 Technology, combines on the same silicon chip a state-of-the-art PWM circuit together with an optimized high voltage avalanche rugged Vertical Power MOSFET (620V or 700V / 0.5A). Typical applications cover off line power supplies with a secondary power cap.

Features

ondition and 20W in single range or with doubler configuration. It is compatible from both primary or secondary regulation loop despite using around 50% less components when compared with a discrete solution. Burst mode operation is an additional feature of this device, offering the possibility to operate in stand-by mode without extra components. DRAIN ON/OFF OSCILLATOR SECURITY LATCH VDD UVLO LOGIC R/S FF S Q PWM LATCH R1 S FF R2 R3 Q OVERTEMP. DETECTOR 0.5 V + _ 1.7 µs delay 250 ns Blanking + _ + 0.5V _ 6 V/A CURRENT AMPLIFIER _ 13 V + ERROR AMPLIFIER 4.5V COMP SOURCE FC00.