VIPER53-E 데이터 시트보기 (PDF) - STMicroelectronics

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VIPER53-E

OFF-line primary switch

STMicroelectronics 

VIPer53 - E

OFF-line primary switch

General features

Type

European

(195 - 265Vac)

DIP-8

50W

PowerSO-10TM

65W

US / Wide range

(85 - 265 Vac)

30W

40W

PowerSO-10

DIP-8

Features

■ Switching frequency up to 300kHz

■ Current limitation

■ Current mode control with adjustable limitation

■ Soft start and shut-down control

■ Automatic burst mode in standby condition

(“Blue Angel“ compliant )

■ Undervoltage lockout with Hysteresis

■ HIgh voltage star-tup current source

■ Overtemperature protection

■ Overload and short-circuit control

Block diagram

Description

The VIPer53-E combines an enhanced current

mode PWM controller with a high voltage

MDMesh Power Mosfet in the same package.

Typical applications cover offline power supplies

with a secondary power capability ranging up to

30W in wide range input voltage, or 50W in single

European voltage range and DIP-8 package, with

the following benefits:

■ Overload and short circuit controlled by

feedback monitoring and delayed device reset.

■ Efficient standby mode by enhanced pulse

skipping.

■ Primary regulation or secondary loop failure

protection through high gain error amplifier.

OSC

DRAIN

O N/O FF

OSCILLAT OR

VDD

UVLO

C O MPARATO R

8.4/

11.5V

15V

ERROR

AMPLIFIER

O VER VO LTAGE

C O MPARATO R

18V

OVERT EMP.

DET ECT OR

PWM

LATCH

R1 S

FF Q

R2

R3 R4 R5

0.5V

STANDBY

COMPARATOR

4.35V

OVERLOAD

COMPARATOR

BLANKING TIME

SELECTION

1V

150/400ns

BLANKING

PW M

C O MPAR ATO R

4V

8V

125k

0.5V

HCOM P

CURRENT

AMPLIFIER

4.5V

November 2006

Rev 1

T OVL

COMP

SOURCE

1/36

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