900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




STMicroelectronics Electronic Components Datasheet

VIPER22A Datasheet

LOW POWER OFF LINE SMPS PRIMARY SWITCHER

No Preview Available !

VIPer22ADIP
® VIPer22AS
LOW POWER OFF LINE SMPS PRIMARY SWITCHER
TYPICAL POWER CAPABILITY
Mains type
SO-8
European
(195 - 265 Vac)
12 W
US / Wide range
(85 - 265 Vac)
7W
DIP-8
20 W
12 W
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
BLOCK DIAGRAM
SO-8
DIP-8
PACKAGE
SO-8
DIP-8
ORDER CODES
TUBE
T&R
VIPer22AS VIPer22AS13TR
VIPer22ADIP -
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.
DRAIN
REGULATOR
INTERNAL
SUPPLY
VDD
FB
_
8/14.5V +
+
42V _
ON/OFF
60kHz
OSCILLATOR
OVERTEMP.
DETECTOR
S
R1 FF Q
R2 R3 R4
PWM
LATCH
OVERVOLTAGE
R LATCH
S FF Q
BLANKING
+
_ 0.23 V
1 k
230
SOURCE
September 2002
1/15


STMicroelectronics Electronic Components Datasheet

VIPER22A Datasheet

LOW POWER OFF LINE SMPS PRIMARY SWITCHER

No Preview Available !

VIPer22ADIP / VIPer22AS
PIN FUNCTION
Name
Function
Power supply of the control circuits. Also provides a charging current during start up thanks to a high
voltage current source connected to the drain. For this purpose, an hysteresis comparator monitors the
VDD voltage and provides two thresholds:
VDD - VDDon: Voltage value (typically 14.5V) at which the device starts switching and turns off the start up
current source.
- VDDoff: Voltage value (typically 8V) at which the device stops switching and turns on the start up current
source.
SOURCE Power MOSFET source and circuit ground reference.
Power MOSFET drain. Also used by the internal high voltage current source during start up phase for
DRAIN charging the external VDD capacitor.
Feedback input. The useful voltage range extends from 0V to 1V, and defines the peak drain MOSFET
FB current. The current limitation, which corresponds to the maximum drain current, is obtained for a FB pin
shorted to the SOURCE pin.
CURRENT AND VOLTAGE CONVENTIONS
IDD ID
VDD
IFB
FB
VDD
CONTROL
VFB VIPer22A
DRAIN
SOURCE
VD
CONNECTION DIAGRAM
SOURCE 1
SOURCE 2
FB 3
VDD 4
8 DRAIN
7 DRAIN
6 DRAIN
5 DRAIN
SO-8
SOURCE 1
SOURCE 2
FB 3
VDD 4
8 DRAIN
7 DRAIN
6 DRAIN
5 DRAIN
DIP8
2/15


Part Number VIPER22A
Description LOW POWER OFF LINE SMPS PRIMARY SWITCHER
Maker STMicroelectronics
Total Page 15 Pages
PDF Download

VIPER22A Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 VIPER222 High voltage converter
STMicroelectronics
2 VIPER22A LOW POWER OFF LINE SMPS PRIMARY SWITCHER
STMicroelectronics
3 VIPer22A-E Low power OFF-line SMPS primary switcher
STMicroelectronics
4 VIPER22ADIP LOW POWER OFF LINE SMPS PRIMARY SWITCHER
STMicroelectronics
5 VIPer22ADIP-E Low power OFF-line SMPS primary switcher
STMicroelectronics
6 VIPer22AS LOW POWER OFF LINE SMPS PRIMARY SWITCHER
STMicroelectronics
7 VIPer22AS-E Low power OFF-line SMPS primary switcher
STMicroelectronics
8 VIPer22AS13TR LOW POWER OFF LINE SMPS PRIMARY SWITCHER
STMicroelectronics





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy