VIPer plus. VIPER26 Datasheet

VIPER26 plus. Datasheet pdf. Equivalent

Part VIPER26
Description Fixed frequency VIPer plus
Feature VIPER26 Fixed frequency VIPerTM plus family Features ■ 800 V avalanche rugged power section ■ PWM o.
Manufacture STMicroelectronics
Datasheet
Download VIPER26 Datasheet



VIPER26
VIPER26
Fixed frequency VIPerTM plus family
Features
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
Standby power < 50 mW at 265 VAC
Limiting current with adjustable set point
On-board soft-start
Safe auto-restart after a fault condition
Hysteretic thermal shutdown
Application
Auxiliary power supply for appliances
Power metering
LED drivers
SMPS for set-top boxes, DVD players and
recorders
SO16 narrow
SO-16
Description
DIP-7
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.
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 topology (VOUT VDDCSon)
DC Input Voltage
DC Output Voltage
-
DRAIN
COMP
VIPER26
GND VDD LIM FB
Table 1. Device summary
Order codes
VIPER26LN
VIPER26HN
VIPER26HD
VIPER26HDTR
VIPER26LD
VIPER26LDTR
September 2010
Package
DIP-7
SO16 narrow
Doc ID 17736 Rev 2
Packaging
Tube
Tube
Tape and reel
Tube
Tape and reel
1/25
www.st.com
25



VIPER26
Contents
Contents
VIPER26
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Typical power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Typical electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Typical circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 High voltage current generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10 Soft start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11 Adjustable current limit set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
12 FB pin and COMP pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13 Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14 Automatic auto restart after overload or short-circuit . . . . . . . . . . . . . 17
15 Open loop failure protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2/25 Doc ID 17736 Rev 2





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