Ma y 2003 1/23
VIPer50/SP
- VIP e r50A/ASP
SMPS PRIMARY I. C.
1
■ ADJUSTABLE SWITCHING FREQUENCY UP
TO 200 kHz
■ CURRENT MODE CONT ROL
■ SOFT START AND SHUT DOWN CONTROL
■ AUTOMA TIC BURST MODE OPERATION IN
STAND- BY CONDITI ON ABLE TO MEET
“BLUE ANGEL” NORM (<1W TOTAL POWER
CONSUMPTION)
■ INTERNAL LY TRIMME D ZENER REFERENCE
■ UNDERVOLTAGE LOCK-OUT WITH
HYST ERESIS
■ INTEGRATED START-UP SUPPL Y
■ AVALANCHE RUGGED
■ OVERTEMPERAT URE PROTECTION
■ LOW STAND-BY CURRENT
■ ADJUSTABLE CURRENT LIMITATION
DESCRIPTION
VIPer50
™/50A, made using VIPower M0
Technolog y, 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).
Typ ica l applic ations cover o ff lin e power supp lies
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.
TYPE V
DSS
I
n
R
DS(on)
V IPer50/SP 620V 1.5 A 5 Ω
V IPer50 A/ASP 700V 1. 5 A 5.7 Ω
BLOCK DIAGRAM
PEN TAW ATT HV PENTAWATT HV
1
10
PowerSO-10™
(022Y)
F
C
0
0
2
9
1
VDD
OSC
COMP
DRAIN
SOURCE
13 V
UV L O
LOGIC
SECURITY
LA TCH
PWM
LATC H
FF
FF
R/S
S
Q
S
R1
R2 R3
Q
OSCIL LATOR
OVER TEMP.
DETECTOR
ERROR
AMPL IFI ER_
+
0.5 V +
_
1.7
µ
s
DELAY
250 ns
BLANKI NG
CURRENT
AMPL IF IER
ON/OFF
0.5V
2 V/A
_
+
+
_
4.5 V
