VIPER12A

Manufacturer Part NumberVIPER12A
ManufacturerSTMicroelectronics
VIPER12A datasheet
 


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®
LOW POWER OFF LINE SMPS PRIMARY SWITCHER
TYPICAL POWER CAPABILITY
Mains type
SO-8
European
8 W
(195 - 265 Vac)
US / Wide range
5 W
(85 - 265 Vac)
n
FIXED 60 KHZ SWITCHING FREQUENCY
n
9V TO 38V WIDE RANGE V
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 VIPer12A combines a dedicated current mode
PWM controller with a high voltage Power
BLOCK DIAGRAM
REGULATOR
INTERNAL
SUPPLY
_
VDD
8/14.5V
+
+
_
42V
FB
November 2003
DIP8
13 W
8 W
PACKAGE
SO-8
VOLTAGE
DIP-8
DD
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 V
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.
ON/OFF
60kHz
OSCILLATOR
PWM
S
LATCH
OVERTEMP.
FF
R1
Q
DETECTOR
R2
R3
R4
BLANKING
OVERVOLTAGE
LATCH
R
FF
S
Q
VIPer12ADIP
VIPer12AS
SO-8
DIP-8
ORDER CODES
TUBE
T&R
13TR
VIPer12AS
VIPer12AS
VIPer12ADIP
DRAIN
+
_
0.23 V
230
1 k
SOURCE
pin
DD
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VIPER12A Summary of contents