VIPER53DIP Datasheet, PDF (1/24 Pages) STMicroelectronics – OFF LINE PRIMARY SWITCH

VIPer53DIP
®
VIPer53SP
OFF LINE PRIMARY SWITCH
TYPICAL OUTPUT POWER CAPABILITY
TYPE
European US / Wide range
(195 - 265 Vac) (85 - 265 Vac)
DIP-8
50W
30W
PowerSO-10™
65W
40W
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
DIP-8
10
1
PowerSO-10™
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 and short circuit controlled by
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.
BLOCK DIAGRAM
VDD
UVLO
COMPARATOR
8.4/
11.5V
15V
ERROR
AMPLIFIER
OVERVOLTAGE
COMPARATOR
18V
OSC
ON/OFF
OSCILLATOR
OVERTEMP.
DETECTOR
PWM
LATCH
R1 ^S
FF Q
R2
R3 R4 R5
0.5V
STANDBY
COMPARATOR
4.35V
OVERLOAD
COMPARATOR
DRAIN
BLANKING TIME
SELECTION
150/400ns
BLANKING
PWM
COMPARATOR
4V
8V
125k
1V
0.5V
H_COMP
CURRENT
AMPLIFIER
4.5V
TOVL
COMP
SOURCE
June 2004
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