VIPER16
Fixed frequency VIPer
TM
plus family
Features
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800 V avalanche rugged power section
PWM operation with frequency jittering for low
EMI
Operating frequency:
– 60 kHz for L type
– 115 kHz for H type
No need of auxiliary winding for low power
application
Standby power < 50 mW at 265 V
AC
Limiting current with adjustable set point
On-board soft-start
Safe auto-restart after a fault condition
Hysteretic thermal shutdown
SO16 narrow
SO-16
DIP-7
Description
The device is an off-line converter with an 800 V
avalanche ruggedness power section, a PWM
controller, user defined overcurrent limit,
protection against feedback network
disconnection, hysteretic thermal protection, soft
start up and safe auto restart after any fault
condition. It is able to power itself directly from the
rectified mains, eliminating the need for an
auxiliary bias winding.
Advance frequency jittering reduces EMI filter
cost. Burst mode operation and the devices very
low consumption both help to meet the standard
set by energy saving regulations.
Figure 1.
Typical application
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Application
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Replacement of capacitive power supply
Auxiliary power supply for appliances,
Power metering
LED drivers
Table 1.
Device summary
Order codes
VIPER16LN
DIP-7
VIPER16HN
VIPER16HD
VIPER16HDTR
SO16 narrow
VIPER16LD
VIPER16LDTR
Tube
Tape and reel
Doc ID 15232 Rev 5
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www.st.com
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Package
Packaging
Tube
Tube
Tape and reel
October 2011
STMICROELECTRONICS [ STMICROELECTRONICS ]
