VIPER100-E

VIPer100-E SMPS PRIMARY I.C. General Features Type VIPer100-E VDSS 620V In RDS(on) 3A 2.5 Ω ■ ADJUSTABLE SWITCHING FREQUENCY UP TO 200 kHz ■ CURRENT MODE CONTROL ■ SOFT START AND SHUTDOWN CONTROL ■ AUTOMATIC BURST MODE OPERATION IN STAND-BY CONDITION ABLE TO MEET “BLUE ANGEL” NORM (<1w TOTAL POWER CONSUMPTION) ■ INTERNALLY TRIMMED ZENER REFERENCE ■ UNDERVOLTAGE LOCK-OUT WITH HYSTERESIS ■ INTEGRATED START-UP SUPPLY ■ OVER-TEMPERATURE PROTECTION ■ LOW STAND-BY CURRENT ■ ADJUSTABLE CURRENT LIMITATION Block Diagram PENTAWATT HV PENTAWATT HV (022Y) Description VIPer100-E, made using VIPower M0 Technology, combines on the same silicon chip a state-of-theart PWM circuit together with an optimized, high voltage, Vertical Power MOSFET (620V/ 3A). Typical applications cover offline power supplies with a secondary power capability of 50W in wide range condition and 100W 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 ability to operate in stand-by mode without extra components. OSC ON/OFF OSCILLATOR SECURITY PWM LATCH LATCH VDD UVLO LOGIC R/S FF Q S S R1 FF Q R2 R3 OVERTEMP. DETECTOR 0.5 V + _ ERROR _ AMPLIFIER 13 V + 4.5 V 1.7 µ s DELAY September 2005 250 ns BLANKING COMP DRAIN 0.5V ++ _ _ 1 V/A CURRENT AMPLIFIER SOURCE FC00231 Rev 1 ...