viper53

Manufacturer Part Numberviper53
ManufacturerSTMicroelectronics
viper53 datasheet
 


Specifications of viper53

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®
TYPICAL OUTPUT POWER CAPABILITY
European
TYPE
(195 - 265 Vac)
DIP-8
50W
PowerSO-10
65W
Note:
Above power capabilities are given under adequate
thermal conditions
FEATURES
n
SWITCHING FREQUENCY UP TO 300 kHz
n
CURRENT LIMITATION
n
CURRENT MODE CONTROL WITH
ADJUSTABLE LIMITATION
n
SOFT START AND SHUT DOWN CONTROL
n
AUTOMATIC BURST MODE IN STAND-BY
CONDITION (“BLUE ANGEL” COMPLIANT)
n
UNDERVOLTAGE LOCKOUT WITH
HYSTERESIS
n
HIGH VOLTAGE STARTUP CURRENT
SOURCE
n
OVERTEMPERATURE PROTECTION
n
OVERLOAD AND SHORT-CIRCUIT CONTROL
BLOCK DIAGRAM
UVLO
COMPARATOR
VDD
8.4/
11.5V
15V
ERROR
AMPLIFIER
OVERVOLTAGE
COMPARATOR
18V
June 2004
OFF LINE PRIMARY SWITCH
US / Wide range
(85 - 265 Vac)
30W
40W
DIP-8
DESCRIPTION
The VIPer53 combines in the same package an
enhanced current mode PWM controller with a
high voltage MDMesh Power Mosfet. Typical
applications cover off line 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, with
the following benefits:
– Overload
feedback monitoring and delayed device reset.
– Efficient standby mode by enhanced pulse
skipping.
– Primary regulation or secondary loop failure
protection through high gain error amplifier.
OSC
ON/OFF
OSCILLATOR
PWM
LATCH
OVERTEMP.
S
R1
DETECTOR
FF
Q
R2
R3
R4
R5
150/400ns
BLANKING
STANDBY
COMPARATOR
0.5V
4V
4.35V
OVERLOAD
COMPARATOR
4.5V
VIPer53DIP
VIPer53SP
10
1
PowerSO-10™
and
short circuit
controlled
DRAIN
BLANKING TIME
SELECTION
1V
H
0.5V
COMP
CURRENT
PWM
AMPLIFIER
COMPARATOR
8V
125k
TOVL
COMP
SOURCE
by
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