VIPer50BSP - STMicroelectronics

VIPer50BSP SMPS PRIMARY I.C.

s SOFT START AND SHUT DOWN CONTROL VIPer50B made using VIPower M0 Technology s AUTOMATIC BURST MODE OPERATION IN combines on the same silicon chip a STAND-BY CONDITION ABLE TO MEET state-of-the-art PWM circuit together with an ”BLUE ANGEL” NORM (<1W TOTAL POWER optimized high voltage avalanche rugged Vertical CONSUMPTION) Power MOSFET (400 V / 3 A). Typical .

Features

n. Burst mode s OVERTEMPERATURE PROTECTION operation is an additional feature of this device, s LOW STAND-BY CURRENT offering the possibility to operate in stand-by s ADJUSTABLE CURRENT LIMITATION mode without extra components. BLOCK DIAGRAM OSC DRAIN PENTAWATT HV 1 ON/OFF OSCILLATOR SECURITY LATCH VDD PWM LATCH S R1 FF Q R2 R3 UVLO LOGIC R/S FF S Q OVERTEMP. DETECTOR 0.5V _ + + _ 0.5 V ERROR _ AMPLIFIER 13 V + + _ 1.7 µ s DELAY 250 ns BLANKING 1 V/A CURRENT AMPLIFIER COMP SOURCE FC00291B 4.5 V December 1999 1/20 VIPER50B/BSP ABSOLUTE MAXIMUM RATING Symb ol V DS ID VDD V .