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VIPER100SP Datasheet

  • VIPER100SP

  • SMPS PRIMARY I.C.

  • 20頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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廬
VIPer100/SP
VIPer100A/ASP
SMPS PRIMARY I.C.
T YPE
VIPer100/SP
VIPer100A/ASP
V
DSS
620V
700V
I
n
3 A
3 A
R
DS(on)
2.5
鈩?/div>
2.8
鈩?/div>
10
PENTAWATT HV
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
鈥滲LUE ANGEL鈥?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
BLOCK DIAGRAM
OSC
1
PowerSO-10
PENTAWATT HV
(022Y)
DESCRIPTION
VIPer100鈩?100A, 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 (620V or 700V / 3A).
Typical applications cover off line power supplies
with a secondary power capability of 50W in wide
range condition and 100W 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 possibility to operate in stand-by
mode without extra components.
DRAIN
ON/OFF
OSCILLATOR
SECURITY
LATCH
V
DD
PWM
LATCH
S
R1 FF Q
R2 R3
UVLO
LOGIC
R/S
FF
S
Q
OVERTEMP.
DETECTOR
0.5V
_
+ +
_
0.5 V
+
_
1.7
碌
s
DELAY
25 0 ns
BLANKING
1 V/A
ERROR
_ AMPLIFIER
13 V
+
4.5 V
CURRENT
AMPLIFIER
COMP
SOURCE
FC00231
May 1999
1/20

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