VIPER53EDIP-E Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

VIPER53EDIP-E

OFF-line Primary Switch

STMicroelectronics 

VIPer53EDIP - E

VIPer53ESP - E

OFF-line Primary Switch

Features

■ Switching frequency up to 300kHz

■ 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

■ Integrated start-up current source

■ Over-temperature protection

■ Overload and short-circuit control

■ Overvoltage protection

■ In compliance with the 2002/95/EC European

Directive

Description

The VIPer53E combines an enhanced current

mode PWM controller with a high voltage

MDMesh Power MOSFET in the same package.

Block diagram

OSC

PowerSO-10

DIP-8

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 and

40W in wide range input voltage, or 65W in single

European voltage range and PowerSO-10

package, with the following benefits:

– Overload and short-circuit events

controlled by feedback monitoring and

delayed device reset;

– Efficient standby mode by enhanced pulse

skipping.

– Integrated start-up current source is

disabled during normal operation to reduce

the input power.

DRAIN

ON/OFF

OSCILLATOR

VDD

UVLO

COMPARATOR

8. 4/

11.5V

8V

OVERTEMP.

DETECTOR

PWM

LA TCH

R1 S

FF Q

R2

R3 R4 R5

125k

4V

BLANKING TIME

SELECTION

1V

PWM

COMPARATOR

150/400ns

BLANKING

0.5V

STANDBY

COMPARATOR

0.5V

OVERLOAD

COMPARATOR

4.4V

HC O MP

CURRENT

AMPLIFIER

Vcc

IC OMP

OVERVOLTAGE

COMPARATOR

18V

TOVL

January 2006

DocRev1

4.5V

COMP

SOURCE

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