VIPer31SP
BATTERY CHARGER PRIMARY I.C.
ADVANCE DATA
January 1998
BLOCK DIAGRAM
SC12000
R3 R4
R2
R1
Q
PWM
LATCH
FF
OSCILLATOR
10 V
REGULATOR
UVLO
LOGIC
+
-
29 V
OVERTEMP.
DETECTOR
2.6 V
+
-
-
+
ON/OFF
CURRENT
REGULATION
-+
200 ns
BLANKING
+
-
1.5 A
VCC
VDD GND CREF CSENSE DSENSE SOURCE
DRAINOSCCOMPFB
T YPE V
DSS
I
n
R
DS(on)
VI Per31SP 600 V 1 A 6. 5 Ω
FEATURE
■ RECTANGULAR CHARACTERISTIC,
WITHOUT OPTOCOUPLER
■ INTERNALLY TRIMMED CURRENT
REFERENCE
■ FIXED SWITCHING FREQUENCY,
ADJUSTABLE UP TO 150KHZ
■ AUXILIARY VOLTAGEREGULATOR
■ SOFT START AND SHUT DOWN CONTROL
■ AUTOMATIC BURST MODE OPERATION IN
STAND-BY CONDITION ABLE TO MEET
”BLUE ANGEL” NORM (<1W TOTAL POWER
CONSUMPTION)
■ UNDERVOLTAGE LOCK-OUT WITH
HYSTERESIS
■ INTEGRATED START UP SUPPLY
■ AVALANCHERUGGED
■ OVERVOLTAGE PROTECTION
■ OVERTEMPERATURE PROTECTION
■ CYCLE BY CYCLE CURRENT LIMITATION
■ DEMAGNETISATIONCONTROL
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 ”Blue
Angel” norm and other similar ones.
Power SO-10
1
10
1/16
