VIPer31SP Datasheet | STMicroelectronics

FEATURE s RECTANGULAR CHARACTERISTIC, WITHOUT OPTOCOUPLER s INTERNALLY TRIMMED CURRENT REFERENCE s FIXED SWITCHING FREQUENCY, ADJUSTABLE UP TO 150 KHZ s AUXILIARY VOLTAGE REGULATOR s SOFT START AND SHUT DOWN CONTROL s AUTOMATIC BURST MODE OPERATION IN STAND-BY CONDITION ABLE TO MEET ”BLUE ANGEL” NORM (<1W TOTAL POWER CONSUMPTION) s UNDERVOLTAGE LOCK-OUT WITH HYSTERESIS s INTEGRATED START UP SUPPLY s AVALANCHE RUGGED s OVERVOLTAGE PROTECTION s OVERTEMPERATURE PROTECTION s CYCLE BY CYCLE CURRENT LIMITATION s DEMAGNETISATION CONTROL Power SO-10 DESCRIPTION VIPer31SP bines on the same silicon chip a PWM control dedicated to output current regulation together with an optimised high voltage avalanche rugged vertical power MOSFET (600V/1A). Typical applications cover battery chargers with constant current and constant voltage output characteristics, without any optocoupler between primary and secondary sections. Typical output power capability is 15 W in wide range condition and 30 W in single range or with doubler configuration. Burst mode operation is an additional feature of this device, offering the possibility to operate in no load condition with an input power as low as 1W. This feature insures the pliance towards ”Blue Angel” norm and other similar ones. BLOCK DIAGRAM ON/OFF - 2.6 V + UVLO LOGIC + 29 V - OVERTEMP. DETECTOR 10 V REGULATOR -+ OSCILLATOR R1 R2 R3 R4 LATCH -+ CURRENT REGULATION 200 ns BLANKING DRAIN + - 1.5 A January...