®
VIPer50/SP
-
VIPer50A/ASP
SMPS PRIMARY I.C.
TYPE
VIPer50/SP
VIPer50A/ASP
s
ADJUSTABLE
V
DSS
620V
700V
I
n
1.5 A
1.5 A
R
DS(on)
5
Ω
5.7
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
VIPer50
™
/50A, 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 / 1.5A).
Typical applications cover off line power supplies
with a secondary power capability of 25W in wide
range condition and 50W 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
2 V/A
CURRENT
AMPLIFIER
COMP
SOURCE
May 2003
FC00291
4.5 V
1/23
1
STMICROELECTRONICS [ STMICROELECTRONICS ]
