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STMicroelectronics Electronic Components Datasheet

VIPER20B Datasheet

SMPS PRIMARY I.C.

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VIPer20B
® VIPer20BSP
TYPE
VIPer20B/ SP
VDSS
400V
In
1.3 A
RDS(on)
8.7
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
BLOCK DIAGRAM
SMPS PRIMARY I.C.
PRELIMINARY DATA
10
PENTAWATT HV
1
Power SO-10
DESCRIPTION
VIPer20Bcombines on the same silicon chip a
state-of-the-art PWM circuit together with an
optimized high voltage avalanche rugged Vertical
Power MOSFET (400V 1.3A).
Typical applications cover off line power supplies
with a secondary max power capability of 30W. 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.
OSC
DRAIN
VDD
ON/OFF
OSCILLATOR
UVLO
LOGIC
SECURITY
LATCH
R/S FF Q
S
PWM
LATCH
S
R1 FF Q
R2 R3
OVERTEMP.
DETECTOR
0.5 V
ERROR
AMPLIFIER
_
+
_
13 V +
4.5 V
2 µs
delay
300 ns
Blanking
September 1999
COMP
0.5V
++ _
6 V/A
_
CURRENT
AMPLIFIER
SOURCE
1/17


STMicroelectronics Electronic Components Datasheet

VIPER20B Datasheet

SMPS PRIMARY I.C.

No Preview Available !

VIPer20B / VIPer20BSP
ABSOLUTE MAXIMUM RATING
S ymb ol
VDS
ID
VD D
VOSC
VCOMP
I CO MP
Vesd
ID(AR)
Ptot
Tj
Tstg
Parameter
Continuous Drain-Source Voltage (T j = 25 to 125 oC)
Maximum Current
Supply Voltage
Voltage Range Input
Voltage Range Input
Maximum Continuous Current
Electrostatic discharge (R = 1.5 KC = 100pF)
Avalanche Drain-Source Current, Repetitive or Not-Repetitive
(TC = 100 oC, Pulse W idth Limited by TJ max, δ <1%)
Power Dissipat ion at Tc = 25oC
Junction Operating Temperature
Storage Temperature
Value
-0.3 to 400
Internally Limited
0 to 15
0 t o VDD
0 to 5
±2
2000
TBD
57
-40 to 140
-65 to 150
THERMAL DATA
Rt hj-ca se
R th j-a mb.
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
Max
Max
2.0
70
CONNECTION DIAGRAMS (Top View)
PENTAWATT HV
PowerSO-10
Unit
V
A
V
V
V
mA
V
A
W
oC
oC
oC/W
oC/W
CURRENT AND VOLTAGE CONVENTIONS
IDD
ID
IOSC
VDD
VD D
-
OSC
13V +
DR AIN
COMP SOURCE
ICOMP
VOSC
VCOMP
VDS
2/17
FC0 0020


Part Number VIPER20B
Description SMPS PRIMARY I.C.
Maker STMicroelectronics
Total Page 17 Pages
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