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VIPER31SP Datasheet

  • VIPER31SP

  • BATTERY CHARGER PRIMARY I.C.

  • 16頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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VIPer31SP
BATTERY CHARGER PRIMARY I.C.
ADVANCE DATA
T YPE
VIPer31SP
V
DSS
600 V
I
n
1 A
R
DS(on)
6.5
鈩?/div>
10
FEATURE
s
RECTANGULAR CHARACTERISTIC,
WITHOUT OPTOCOUPLER
s
INTERNALLY TRIMMED CURRENT
REFERENCE
s
FIXED SWITCHING FREQUENCY,
ADJUSTABLE UP TO 150 KHZ
s
AUXILIARY VOLTAGE REGULATOR
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
UNDERVOLTAGE LOCK-OUT WITH
HYSTERESIS
s
INTEGRATED START UP SUPPLY
s
AVALANCHE RUGGED
s
OVERVOLTAGE PROTECTION
s
OVERTEMPERATURE PROTECTION
s
CYCLE BY CYCLE CURRENT LIMITATION
s
DEMAGNETISATION CONTROL
BLOCK DIAGRAM
FB
COMP
1
Power SO-10
DESCRIPTION
VIPer31SP combines on the same silicon chip a
PWM control dedicated to output current
regulation together with an optimised high voltage
avalanche rugged vertical power MOSFET
(600V/1A). Typical applications cover battery
chargers with constant current and constant
voltage output characteristics, without any
optocoupler between primary and secondary
sections. Typical output power capability is 15 W
in wide range condition and 30 W in single range
or with doubler configuration. Burst mode
operation is an additional feature of this device,
offering the possibility to operate in no load
condition with an input power as low as 1W. This
feature insures the compliance towards 鈥滲lue
Angel鈥?norm and other similar ones.
OSC
DRAIN
VCC
ON/OFF
2.6 V
UVLO
LOGIC
R1
+
R2
29 V
-
R3
FF
R4
Q
PWM
LATCH
-
OSCILLATOR
+
-
+
OVERTEMP.
DETECTOR
200 ns
BLANKING
-
+
CURRENT
REGULATION
+
-
1.5 A
10 V
REGULATOR
VDD
GND
CREF
CSENSE
DSENSE
SOURCE
SC12000
January 1998
1/16

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