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VIPER22ADIP Datasheet(PDF) 1 Page - STMicroelectronics

Part No. VIPER22ADIP
Description  LOW POWER OFF LINE SMPS PRIMARY SWITCHER
Download  15 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VIPER22ADIP Datasheet(HTML) 1 Page - STMicroelectronics

 
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September 2002
1/15
VIPer22ADIP
VIPer22AS
LOW POWER OFF LINE SMPS PRIMARY SWITCHER
®
TYPICAL POWER CAPABILITY
n FIXED 60 KHZ SWITCHING FREQUENCY
n 9V TO 38V WIDE RANGE VDD VOLTAGE
n CURRENT MODE CONTROL
n AUXILIARY UNDERVOLTAGE LOCKOUT
WITH HYSTERESIS
n HIGH VOLTAGE START UP CURRENT
SOURCE
n OVERTEMPERATURE, OVERCURRENT AND
OVERVOLTAGE PROTECTION WITH
AUTORESTART
DESCRIPTION
The VIPer22A combines a dedicated current mode
PWM controller with a high voltage Power
MOSFET on the same silicon chip. Typical
applications cover off line power supplies for
battery charger adapters, standby power supplies
for TV or monitors, auxiliary supplies for motor
control, etc. The internal control circuit offers the
following benefits:
– Large input voltage range on the VDD pin
accommodates changes in auxiliary supply
voltage. This feature is well adapted to battery
charger adapter configurations.
– Automatic burst mode in low load condition.
– Overvoltage protection in hiccup mode.
Mains type
SO-8
DIP-8
European
(195 - 265 Vac)
12 W
20 W
US / Wide range
(85 - 265 Vac)
7 W
12 W
ORDER CODES
PACKAGE
TUBE
T&R
SO-8
VIPer22AS
VIPer22AS
13TR
DIP-8
VIPer22ADIP
-
SO-8
DIP-8
BLOCK DIAGRAM
ON/OFF
0.23 V
DRAIN
SOURCE
VDD
PWM
LATCH
60kHz
OSCILLATOR
BLANKING
+
_
8/14.5V
_
+
FF
S
R1
R4
Q
R3
FB
REGULATOR
INTERNAL
SUPPLY
OVERVOLTAGE
LATCH
OVERTEMP.
DETECTOR
1 k
42V
_
+
R2
FF
S
R
Q
230


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