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VIPER50ASP-E Datasheet(PDF) 1 Page - STMicroelectronics

Part No. VIPER50ASP-E
Description  SMPS PRIMARY I.C.
Download  31 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VIPER50ASP-E Datasheet(HTML) 1 Page - STMicroelectronics

 
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Rev 1
September 2005
1/31
31
VIPer50A-E
VIPer50ASP-E
SMPS PRIMARY I.C.
General Features
ADJUSTABLE SWITCHING FREQUENCY UP
TO 200 kHz
CURRENT MODE CONTROL
SOFT START AND SHUTDOWN CONTROL
AUTOMATIC BURST MODE OPERATION IN
STAND-BY CONDITION ABLE TO MEET
“BLUE ANGEL” NORM (<1w TOTAL POWER
CONSUMPTION)
INTERNALLY TRIMMED ZENER
REFERENCE
UNDERVOLTAGE LOCK-OUT WITH
HYSTERESIS
INTEGRATED START-UP SUPPLY
OVER-TEMPERATURE PROTECTION
LOW STAND-BY CURRENT
ADJUSTABLE CURRENT LIMITATION
Block Diagram
Description
VIPer50A-E/ASP-E, made using VIPower M0
Technology, combines on the same silicon chip a
state-of-the-art PWM circuit together with an
optimized, high voltage, Vertical Power MOSFET
(700V/ 1.5A).
Typical applications cover offline power supplies
with a secondary power capability of 25W in wide
range condition and 50W in single range or with
doubler configuration. It is compatible from both
primary or secondary regulation loop despite
using
around
50%
less
components
when
compared with a discrete solution. Burst mode
operation is an additional feature of this device,
offering the ability to operate in stand-by mode
without extra components.
Type
VDSS
In
RDS(on)
VIPer50A-E/ASP-E
700V
1.5A
5.7
PENTAWATT HV
PENTAWATT HV (022Y)
1
10
www.st.com
POWERSO-10TM
VDD
OSC
COMP
DRAIN
SOURCE
13 V
UVLO
LOGIC
SECURITY
LATCH
PWM
LATCH
FF
FF
R/S
S
Q
S
R1
R2 R3
Q
OSCILLATOR
OVERTEMP.
DETECTOR
ERROR
AMPLIFIER
_
+
0.5 V
+
_
1.7
µ s
DELAY
250 ns
BLANKING
CURRENT
AMPLIFIER
ON/OFF
0.5V
2 V/A
_
+
+
_
4.5 V


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