SMPS PRIMARY I.C.

 

 

 ADJUSTABLE SWITCHING FREQUENCY UP 

TO 200 kHz

 CURRENT MODE CONTROL

 SOFT START AND SHUT DOWN 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

 AVALANCHE RUGGED

 OVERTEMPERATURE PROTECTION

 LOW STAND-BY CURRENT

 ADJUSTABLE CURRENT LIMITATION

 

 

DESCRIPTION

VIPer20/20A, 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 / 0.5A).

Typical applications cover off line power supplies

with a secondary power capability of 10W in wide

range condition 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.

 

 

 

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