VIPER22ADIP-E STMicroelectronics, VIPER22ADIP-E Datasheet - Page 8

IC OFFLINE SWIT PWM SMPS 8DIP

VIPER22ADIP-E

Manufacturer Part Number
VIPER22ADIP-E
Description
IC OFFLINE SWIT PWM SMPS 8DIP
Manufacturer
STMicroelectronics
Series
VIPER™r
Type
Pulse Width Modulator Controllerr

Specifications of VIPER22ADIP-E

Output Isolation
Isolated
Frequency Range
54 ~ 66kHz
Voltage - Input
8 ~ 50 V
Voltage - Output
730V
Power (watts)
12W
Operating Temperature
25°C ~ 125°C
Package / Case
8-DIP (0.300", 7.62mm)
Output Voltage
38 V
Output Power
12 W
Input Voltage
0 V to 50 V
Switching Frequency
60 KHz
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
Through Hole
Current, Supply
4.5 mA
Frequency, Oscillator
60 kHz
Package Type
DIP-8
Regulator Type
Switching
Resistance, Thermal, Junction To Case
15 °C/W
Temperature, Operating, Range
-40 to +150 °C
Time, Fall
100 ns
Time, Rise
50 ns
Voltage, Supply
18 V
Supply Voltage
38V
Digital Ic Case Style
DIP
No. Of Pins
8
No. Of Regulated Outputs
1
Filter Terminals
DIP
Rohs Compliant
Yes
For Use With
497-9049 - BOARD EVAL BASED VIPER22ASTR-E497-8215 - BOARD EVAL BASED ON VIPER22A497-5864 - EVAL BOARD DUAL OUTPUT VIPER22A497-5071 - EVAL BOARD DIMMABLE HB PWR LEDVIPER22-LED-EV - VIPER LED POWER SUPPLY
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-7694-5
VIPER22ADIP-E

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Operations
4.2
4.3
8/21
Wide range of V
The V
design to achieve various behaviors. In
chosen to supply the device with two benefits:
Feedback pin principle of operation
A feedback pin controls the operation of the device. Unlike conventional PWM control
circuits which use a voltage input (the inverted input of an operational amplifier), the FB pin
is sensitive to current.
Figure 5.
As soon as the device starts switching, it immediately receives some energy from the
auxiliary winding. C5 can be therefore reduced and a small ceramic chip (100 nF) is
sufficient to insure the filtering function. The total start up time from the switch on of
input voltage to output voltage presence is dramatically decreased.
The output current characteristic can be maintained even with very low or zero output
voltage. Since the TSM101 is also supplied in forward mode, it keeps the current
regulation up whatever the output voltage is.The V
the input voltage, that is to say with a ratio of about 4 for a wide range application.
DD
pin voltage range extends from 9 V to 38 V. This feature offers a great flexibility in
Internal current control structure
Figure 5.
DD
voltage
Doc ID 12050 Rev 2
presents the internal current mode structure.
Figure 4 on page 7
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E
DD
a forward configuration has been
pin voltage may vary as much as

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