®
VIPer100/SP
-
VIPer100A/ASP
SMPS PRIMARY I.C.
TYPE
VIPer100/SP
VIPer100A/ASP
s
ADJUSTABLE
V
DSS
620V
700V
I
n
3A
3A
R
DS(on)
2.5
Ω
2.8
Ω
10
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
PENTAWATT HV
1
PENTAWATT HV
(022Y)
PowerSO-10™
DESCRIPTION
VIPer100
™
/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 50 W 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.
BLOCK DIAGRAM
OSC
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
ERROR
_ AMPLIFIER
13 V
+
+
_
1.7
µ
s
DELAY
250 ns
BLANKING
1 V/A
CURRENT
AMPLIFIER
COMP
SOURCE
May 2003
FC00231
4.5 V
1/23
1
STMICROELECTRONICS [ STMICROELECTRONICS ]
