VIPER53-E datasheet(1/36 Pages) STMICROELECTRONICS

Il numero della parte	VIPER53-E

Spiegazioni elettronici	OFF-line primary switch

PDF	36 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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1 / 36 page

November 2006

Rev 1

1/36

36

VIPer53 - E

OFF-line primary switch

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

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.

General features

Type

European

(195 - 265Vac)

US / Wide range

(85 - 265 Vac)

DIP-8

50W

30W

PowerSO-10TM

65W

40W

DIP-8

PowerSO-10

www.st.com

Block diagram

FF

OSCILLAT OR

150/400ns

BLANKING

1V

4V

OVERT EMP.

DET ECT OR

8.4/

11.5V

15V

0.5V

VDD

OSC

DRAIN

TOVL

COMP

SOURCE

PW M

LATCH

ON/OFF

BLANKING TIME

SELECTION

PW M

COMPARATOR

CURRENT

AMPLIFIER

S

R1

R2

R3 R4 R5

Q

8V

4.35V

OVERLOAD

COMPARATOR

18V

4.5V

125k

0.5V

STANDBY

COMPARATOR

OVERVOLTAGE

COMPARATOR

ERROR

AMPLIFIER

UVLO

COMPARATOR

H

COM P

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