VIPER28 データシートの表示（PDF） - STMicroelectronics

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VIPER28

Off-line high voltage converters

STMicroelectronics 

VIPER28

Off-line high voltage converters

Features

■ 800 V avalanche rugged power section

■ PWM operation with adjustable limiting current

■ 30 mW stand-by power at 265 Vac

■ Operating frequency:

– 60 kHz for L type

– 115 kHz for H type

■ Frequency jittering for low EMC

■ Output overvoltage protection

■ High primary current protection (2nd OCP)

■ Extra power timer for peak current

management

■ On-board soft-start

■ Safe auto-restart after a fault condition

■ Hysteretic thermal shutdown

Application

■ Auxiliary power supply for consumer and home

equipment

■ ATX auxiliary power supply

■ Low / medium power AC-DC adapters

■ SMPS for set-top boxes, DVD players and

recorders, white goods

Datasheet − production data

SDIP10

SO16 narrow

SO 16

Description

DIP-7

The device is an off-line converter with an 800 V

rugged power section, a PWM control, two levels

of over-current protection, over-voltage and

overload protections, hysteretic thermal

protection, soft-start and safe auto-restart after

any fault condition removal. Burst mode operation

and device very low consumption help to meet the

standby energy saving regulations. Advance

frequency jittering reduces EMI filter cost. The

extra power timer allows the management of

output peak power for a designed time window.

The high voltage start-up circuit is embedded in

the device.

Figure 1. Typical application

+

DC input high voltage

wide range

-

+

DC Output voltage

-

DRAIN DRAIN

EPT

VIPER28

GND VDD CONT FB

Table 1. Device summary

Order codes

VIPER28LN / VIPER28HN

VIPER28LE / VIPER28HE

VIPER28HD / VIPER28LD

VIPER28HDTR / VIPER28LDTR

January 2013

This is information on a product in full production.

Package

DIP-7

SDIP10

SO16 narrow

Doc ID 15028 Rev 5

Packaging

Tube

Tape and reel

1/32

www.st.com

32

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