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VIPER20 Datasheet, PDF (1/25 Pages) STMicroelectronics – SMPS PRIMARY I.C.
VIPer20/SP/DIP
®
- VIPer20A/ASP/ADIP
SMPS PRIMARY I.C.
TYPE
VIPer20/SP/DIP
VIPer20A/ASP/ADIP
VDSS
620V
700V
In
0.5 A
0.5 A
RDS(on)
16 Ω
18 Ω
s ADJUSTABLE SWITCHING FREQUENCY UP
TO 200 kHz
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
BLOCK DIAGRAM
PENTAWATT HV PENTAWATT HV (022Y)
10
1
PowerSO-10™
DIP-8
DESCRIPTION
VIPer20/20A, 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 / 0.5A).
Typical applications cover off line power supplies
with a secondary power capability of 10W in wide
range condition and 20W 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.
OSC
DRAIN
July 2002
VDD
ON/OFF
OSCILLATOR
UVLO
LOGIC
SECURITY
LATCH
R/S FF Q
S
PWM
LATCH
S
R1 FF Q
R2 R3
OVERTEMP.
DETECTOR
0.5 V +
_
ERROR
AMPLIFIER
_
13 V +
4.5 V
1.7
µs
delay
250 ns
Blanking
COMP
0.5V
++ _
6 V/A
_
CURRENT
AMPLIFIER
SOURCE
1/25
1