VIPER28HDTR Datasheet, PDF (1/32 Pages) STMicroelectronics – Off-line high voltage converters

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 (2^nd 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
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