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VIPER50B Datasheet(PDF) 1 Page - STMicroelectronics

Part No. VIPER50B
Description  SMPS PRIMARY I.C.
Download  20 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VIPER50B Datasheet(HTML) 1 Page - STMicroelectronics

 
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VIPer50B
VIPer50BSP
SMPS PRIMARY I.C.
TARGET DATA
December 1999
BLOCK DIAGRAM
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
1 V/A
_
+
+
_
4.5 V
T YPE
VDSS
In
RDS(on)
VIPer50B/BSP
400 V
3 A
2.2
FEATURE
s
ADJUSTABLE SWITCHING FREQUENCY UP
TO 200KHZ
s
CURRENT MODE CONTROL
s
SOFT START AND SHUT DOWN CONTROL
s
AUTOMATIC BURST MODE OPERATION IN
STAND-BY CONDITION ABLE TO MEET
”BLUE ANGEL” NORM (<1W TOTAL POWER
CONSUMPTION)
s
INTERNALLY TRIMMED ZENER
REFERENCE
s
UNDERVOLTAGE LOCK-OUT WITH
HYSTERESIS
s
INTEGRATED START-UP SUPPLY
s
AVALANCHE RUGGED
s
OVERTEMPERATURE PROTECTION
s
LOW STAND-BY CURRENT
s
ADJUSTABLE CURRENT LIMITATION
DESCRIPTION
VIPer50B made using VIPower M0 Technology
combines
on
the
same
silicon
chip
a
state-of-the-art PWM circuit together with an
optimized high voltage avalanche rugged Vertical
Power
MOSFET
(400
V
/
3
A).
Typical
applications cover off line power supplies with a
secondary power capability of 50W in a US mains
lines 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 possibility to operate in stand-by
mode without extra components.
PowerSO-10
1
10
PENTAWATT HV
PENTAWATT HV
(022Y)
®
1/20


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