VIPER100B Datasheet, PDF (1/20 Pages) STMicroelectronics – SMPS PRIMARY I.C.

VIPer100B
®
VIPer100BSP
TYPE
V I P e r1 0 0B / B S P
V_DSS
400V
I_n
R_DS(on)
6A
1.1 Ω
SMPS PRIMARY I.C.
PRELIMINARY DATA
FEATURE
s ADJUSTABLE SWITCHING FREQUENCY UP
TO 200KHZ
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
10
PENTAWATT HV
1 _{PENTAWATT HV}
PowerSO-10
(022Y)
DESCRIPTION
VIPer100B/100BSP, 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 (400 V / 6 A). Typical
applications cover off line power supplies with
a secondary power capability of 100 W in a US
mains lines 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
PWM
LATCH
VDD
UVLO
LOGIC
FF
R/S Q
S
R1 _FF Q
S
R2 R3
OVERTEMP.
DETECTOR
0.5 V +
_
ERROR
_ AMPLIFIER
13 V +
4.5 V
1.7 µ s
DELAY
25 0 ns
BLANKING
0 .5V
++ ^_
_
0. 5V/A
CURRENT
AMPLIFIER
January 2000
COMP
SOU RCE
1/20