VIPER12ADIP
| Model | VIPER12ADIP |
| Description | LOW POWER OFF LINE SMPS PRIMARY SWITCHER |
| PDF file | Total 15 pages (File size: 265K) |
| Chip Manufacturer | STMICROELECTRONICS |
®
VIPer12ADIP
VIPer12AS
LOW POWER OFF LINE SMPS PRIMARY SWITCHER
TYPICAL POWER CAPABILITY
Mains type
European
(195 - 265 Vac)
US / Wide range
(85 - 265 Vac)
SO-8
8W
5W
DIP8
13 W
8W
SO-8
DIP-8
ORDER CODES
PACKAGE
n
n
n
n
FIXED 60 KHZ SWITCHING FREQUENCY
9V TO 38V WIDE RANGE V
DD
VOLTAGE
CURRENT MODE CONTROL
AUXILIARY UNDERVOLTAGE LOCKOUT
WITH HYSTERESIS
SOURCE
SO-8
DIP-8
TUBE
T&R
VIPer12AS
VIPer12AS
13TR
VIPer12ADIP
n
HIGH VOLTAGE START UP CURRENT
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
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
DD
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.
DRAIN
ON/OFF
REGULATOR
60kHz
OSCILLATOR
INTERNAL
SUPPLY
OVERTEMP.
DETECTOR
R1
S
FF
PWM
LATCH
Q
R2 R3 R4
VDD
8/14.5V
_
BLANKING
+
OVERVOLTAGE
LATCH
Q
+
_
0.23 V
+
42V
_
S
R
FF
230
Ω
1 kΩ
FB
SOURCE
September 2002
1/15
