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VIPER50SP Datasheet(PDF) 1 Page - STMicroelectronics |
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VIPER50SP Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  May 2003 1/23 ® VIPer50/SP - VIPer50A/ASP SMPS PRIMARY I.C. 1 s ADJUSTABLE SWITCHING FREQUENCY UP TO 200 kHz s CURRENT MODE CONTROL 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 INTERNALLY TRIMMED ZENER REFERENCE s UNDERVOLTAGE LOCK-OUT WITH HYSTERESIS s INTEGRATED START-UP SUPPLY s AVALANCHE RUGGED s OVERTEMPERATURE PROTECTION s LOW STAND-BY CURRENT s ADJUSTABLE CURRENT LIMITATION DESCRIPTION VIPer50™/50A, made 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 / 1.5A). Typical applications cover off line power supplies with a secondary power capability of 25W in wide range condition and 50W 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. TYPE VDSS In RDS(on) VIPer50/SP 620V 1.5 A 5 Ω VIPer50A/ASP 700V 1.5 A 5.7 Ω BLOCK DIAGRAM PENTAWATT HV PENTAWATT HV 1 10 PowerSO-10™ (022Y) VDD OSC COMP DRAIN SOURCE 13 V UVLO LOGIC SECURITY LATCH PWM LATCH FF FF R/S S Q S R1 R2 R3 Q OSCILLATOR OVERTEMP. DETECTOR ERROR AMPLIFIER _ + 0.5 V + _ 1.7 µ s DELAY 250 ns BLANKING CURRENT AMPLIFIER ON/OFF 0.5V 2 V/A _ + + _ 4.5 V |
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