VIPER31SP Datasheet, PDF (1/16 Pages) STMicroelectronics – BATTERY CHARGER PRIMARY I.C.

VIPer31SP
BATTERY CHARGER PRIMARY I.C.
TYPE
VIPer31SP
V_DSS
600 V
I_n
R_DS(on)
1A
6.5 Ω
ADVANCE DATA
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
”BLUE ANGEL” 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
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 ”Blue
Angel” norm and other similar ones.
BLOCK DIAGRAM
VCC
FB
COMP
OSC
ON/OFF
-
2.6 V
+
UVLO
LOGIC
+
29 V
-
OVERTEMP.
DETECTOR
10 V
REGULATOR
-+
OSCILLATOR
R1
R2 _R3
FF
Q
R4
PWM
LATCH
-+
CURRENT
REGULATION
200 ns
BLANKING
DRAIN
+
-
1.5 A
January 1998
VDD
GND
CREF
CSENSE
DSENSE
SOURCE
SC12000
1/16