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VIPER20B Datasheet(PDF) 4 Page - STMicroelectronics

Part No. VIPER20B
Description  SMPS PRIMARY I.C.
Download  17 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VIPER20B Datasheet(HTML) 4 Page - STMicroelectronics

 
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ELECTRICAL CHARACTERISTICS (TJ =25
oC, VDD = 13 V, unless otherwise specified)
POWER SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
BVDSS
Drain-Source Voltage
ID =10 mA
VCOMP = 0 V
400
V
IDSS
Of f-St ate Drain Current VDS =300 V
TJ= 125
oC
VCOMP =0 V
0.6
mA
RDS( on)
St atic Drain Source on
Resistance
ID =0. 9 A
ID =0. 9 A
TJ= 100
oC
7.3
8.7
15.7
tf
Fall Time
ID =0. 1 A
Vin =300 V(1)
(see fig. 3)
80
ns
tr
Rise Time
ID =0. 9 A
Vin = 300 V (1)
(see fig. 3)
50
ns
COSS
Output Capacit ance
VDS =25 V
90
pF
(1) On Inductive Load, Clamped.
SUPPLY SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
IDDch
St art -up Charging
Current
VDD =0 to VDDon
VDS =70 V
(see fig. 2)
-2
mA
IDD0
Operat ing Supply
Current
VDD =12 V, FSW =0 KHz
(see fig. 2)
12
T BD
mA
IDD1
Operat ing Supply
Current
VDD =12 V, FSW =100 KHz
13
mA
IDD2
Operat ing Supply
Current
VDD =12 V, FSW =200 KHz
14
mA
VDDo ff
Undervolt age
Shutdown
(see fig. 2)
8
V
VDDo n
Undervolt age Reset
(see fig. 2)
11
12
V
VDDhyst
Hysteresis St art-up
(see fig. 2)
2. 4
3
V
OSCILLATOR SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
FSW1
Oscillator Frequency
Initial Accuracy
RT =8.2 K
CT =2.4 nF
(see fig.7)
90
100
110
KHz
FSW2
Oscillator Frequency
Total Variation
RT =8.2 K
CT =2. 4 nF
VDD =9 to15 V
TJ = 0 to 100
o C
80
100
120
KHz
VOSCih
Oscillator Peak Volt age
7.1
V
VOSCil
Oscillator Valley
Voltage
3.7
V
VIPer20B / VIPer20BSP
4/17


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