Image VIPER22A
型号: VIPER22A
厂商: STMicroelectronics STMicroelectronics
标准:
分类: 集成电路
描述: low power off line smps primary switcher
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VIPer22ADIP  
VIPer22AS  
®
LOW POWER OFF LINE SMPS PRIMARY SWITCHER  
TYPICAL POWER CAPABILITY  
Mains type  
SO-8  
DIP-8  
European  
(195 - 265 Vac)  
12 W  
20 W  
SO-8  
DIP-8  
US / Wide range  
(85 - 265 Vac)  
7 W  
12 W  
ORDER CODES  
PACKAGE  
TUBE  
T&R  
FIXED 60 KHZ SWITCHING FREQUENCY  
9V TO 38V WIDE RANGE VDD VOLTAGE  
CURRENT MODE CONTROL  
SO-8  
DIP-8  
VIPer22AS  
VIPer22AS13TR  
VIPer22ADIP -  
AUXILIARY UNDERVOLTAGE LOCKOUT  
WITH HYSTERESIS  
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.  
HIGH VOLTAGE START UP CURRENT  
SOURCE  
OVERTEMPERATURE, OVERCURRENT AND  
OVERVOLTAGE PROTECTION WITH  
AUTORESTART  
DESCRIPTION  
– Automatic burst mode in low load condition.  
– Overvoltage protection in hiccup mode.  
The VIPer22A combines a dedicated current mode  
PWM controller with a high voltage Power  
BLOCK DIAGRAM  
DRAIN  
ON/OFF  
60kHz  
OSCILLATOR  
REGULATOR  
PWM  
LATCH  
INTERNAL  
SUPPLY  
S
FF  
R2 R3 R4  
OVERTEMP.  
DETECTOR  
R1  
Q
_
VDD  
+
_
BLANKING  
0.23 V  
8/14.5V  
+
OVERVOLTAGE  
LATCH  
230  
R
+
_
FF  
S
Q
42V  
1 k  
FB  
SOURCE  
September 2002  
1/15