VIPER100-E Datasheet, PDF (1/29 Pages) STMicroelectronics – SMPS PRIMARY I.C.

VIPer100-E
SMPS PRIMARY I.C.
General Features
Type
VIPer100-E
V_DSS
620V
I_n
R_DS(on)
3A
2.5 Ω
■ 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
Block Diagram
PENTAWATT HV
PENTAWATT HV (022Y)
Description
VIPer100-E, 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/ 3A).
Typical applications cover offline power supplies
with a secondary power capability of 50W 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
VDD
UVLO
LOGIC
R/S ^FF Q
S
S
R1 _FF Q
R2 R3
OVERTEMP.
DETECTOR
0.5 V +
_
ERROR
_ AMPLIFIER
13 V +
4.5 V
1.7 µ s
DELAY
September 2005
250 ns
BLANKING
COMP
DRAIN
0.5V
++ ^_
_
1 V/A
CURRENT
AMPLIFIER
SOURCE
Rev 1
1/29
www.st.com
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