Table 1.
General Features
V
Type
DSS
VIPer100/SP
620V
VIPer100A/ASP
700V
ADJUSTABLE SWITCHING FREQUENCY UP
TO 200 kHz
CURRENT MODE CONTROL
SOFT START AND SHUTDOWN CONTROL
AUTOMATIC BURST MODE OPERATION IN
STAND-BY CONDITION ABLE TO MEET
“BLUE ANGEL” NORM (<1w TOTAL POWER
CONSUMPTION)
INTERNALLY TRIMMED ZENER
REFERENCE
UNDERVOLTAGE LOCK-OUT WITH
HYSTERESIS
INTEGRATED START-UP SUPPLY
OVER-TEMPERATURE PROTECTION
LOW STAND-BY CURRENT
ADJUSTABLE CURRENT LIMITATION
Figure 1.
Block Diagram
V
DD
ERROR
_
AMPLIFIER
13 V
+
June 2005
Figure 2.
I
R
n
DS(on)
Ω
3 A
2.5
Ω
3 A
2.8
PENTAWATT HV
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, Vertical Power MOSFET
(620V or 700V / 3A).
Typical applications cover offline 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 ability to operate in stand-by mode
without extra components.
OSC
ON/OFF
OSCILLATOR
SECURITY
PWM
LATCH
LATCH
S
FF
UVLO
R/S
Q
R1
Q
FF
LOGIC
S
R2 R3
OVERTEMP.
DETECTOR
1.7 μ s
0.5 V
+
250 ns
_
DELAY
BLANKING
4.5 V
COMP
VIPer100/SP
VIPer100A/ASP
SMPS PRIMARY I.C.
Package
PENTAWATT HV (022Y)
DRAIN
0.5V
_
+
+
1 V/A
_
CURRENT
AMPLIFIER
SOURCE
www.st.com
Rev 2
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