VIPER12AS-E Datasheet PDF - ST Microelectronics
| Part Number | VIPER12AS-E | |
| Description | Low Power OFF-Line SMPS Primary Switcher | |
| Manufacturers | ST Microelectronics | |
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VIPer12ADIP - E
VIPer12AS - E
Low Power OFF-Line SMPS Primary Switcher
Features
■ Fixed 60kHZ Switching Frequency
■ 9V to 38V Wide Range VDD Voltage
■ Current Mode Control
■ Auxiliary Undervoltage Lockout with Hysteresis
■ High Voltage Start-up Current Source
■ Overtemperature, Overcurrent and
Overvoltage Protection with Auto-Restart
■ Typical power capability
– European (195 - 265 Vac) 8W for SO-8,
13W for DIP-8
– European (85 - 265 Vac) 5W for SO-8,
8W for DIP-8
Description
The VIPer12A combines a dedicated current
mode PWM controller with a high voltage Power
MOSFET on the same silicon chip.
Block diagram
SO-8
DIP-8
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
January 2006
DocRev1
+
_ 0.23 V
1 kΩ
230 Ω
SOURCE
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www.st.com
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VIPer12ADIP/ AS - E
Electrical characteristics
Table 5. Oscillation section
Symbol
Parameter
Test conditions
FOSC
Oscillator frequency
total variation
VDD = VDDoff ... 35V;
TJ = 0 ... 100°C
Table 6. PWM Comparator section
Symbol
Parameter
Test Conditions
GID IFB to ID current gain (See Figure 11 on page 14)
IDlim
Peak current
limitation
VFB = 0V
(See Figure 11 on page 14)
IFBsd
RFB
IFB Shutdown current (See Figure 11 on page 14)
FB Pin input
impedance
ID = 0mA
(See Figure 11 on page 14)
td
Current sense delay
to turn-OFF
ID = 0.2A
tb
tONmin
Blanking time
Minimum Turn-ON
time
Table 7. Overtemperature section
Symbol
Parameter
Test Conditions
TSD
THYST
Thermal shutdown
temperature
Thermal shutdown
hysteresis
(See Figure 12 on page 14)
(See Figure 12 on page 14)
Table 8. Typical Power Capability
Mains type
European (195 - 265 Vac)
US / Wide range (85 - 265 Vac)
SO-8
8W
5W
Min. Typ. Max. Unit
54 60 66 kHz
Min.
Typ.
320
Max.
Unit
0.32 0.4 0.48 A
0.9 mA
1.2 kΩ
200 ns
500 ns
700 ns
Min. Typ. Max. Unit
140 170
°C
40 °C
DIP-8
13W
8W
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for VIPER12AS-E electronic component. |
| Information | Total 21 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ VIPER12AS-E.PDF Datasheet ] | |
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