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SIP11205 Datasheet(PDF) 4 Page - Vishay Siliconix

Part # SIP11205
Description  Feed-Forward Controller with Primary MOSFET Drivers for Intermediate Bus Converters
PDF  21 Pages
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SIP11205 Datasheet(HTML) 4 Page - Vishay Siliconix

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Document Number: 69233
S-81795-Rev. C, 04-Aug-08
Vishay Siliconix
SiP11205
SPECIFICATIONS
Parameter
Symbol
Test Conditions
Unless Otherwise Specified
TA = - 40 °C to + 85 °C, FOSC = 800 kHz,
10.5 V
≤ V
CC ≤ 13.2 V, VINDET = 4.8 V,
VIN = 48 V, RDB1 = 47.5 kΩ, RDB2 = 28.7 kΩ,
ROSC = 47.5 kΩ, COSC = 100 pF
Limits
Unit
Min.
Typ.
Max.
Pre-Regulator
VIN Range
VIN
36
48
75
V
Pre-Reg Current (cut-off)
IVINLKG
VIN = 75 V, VCC > 10.5 V
10
µA
Pre-Reg Current (standby)
IVINSD
VIN = 75 V, VINDET = 0 V
90
200
Pre-Reg Current (switching)
IVIN
VIN = 75 V, VINDET = 7.5 V
3.6
6.2
9
mA
Pre-Reg Output Voltage
VREG
VCC Voltage with VIN = 48 V
7.8
9.3
10.4
V
Pre-Reg Drive Current
ISTART
VCC < VREG
20
mA
Pre-Reg Load Regulation
LDR
ILOAD: 0 to 20 mA
100
mV
Pre-Reg Line Regulation
LNR
0.05
%/V
Regulator Compensation
ISRC
VCC = 12 V
- 35
- 20
- 10
µA
ISNK
40
87
130
VCC Supply Voltage
VCC Range
VCC
10.5
12
13.2
V
Shut Down Current
ISD
VINDET = 0 V
50
150
350
µA
Quiescent Current
IQ
VINDET < VREF
3.045.2
mA
Supply Current
ICC
VINDET > VREF
5.0
6.6
8.5
UVLO OFF-Threshold
UVLOH
VCC rising
7.6
9.0
10
V
Hysteresis
HUVLO
1.2
VCC Clamp Voltage
VCLAMP
Force 20 mA into VCC
14
15.3
16.2
Current Sense
Current Limit Threshold 1 (MOC)a
VMOC
ISS = 20 µA
105
130
160
mV
Current Limit Threshold 2 (SOC)b
VSOC
ISS = 400 nA
165
200
235
CS to DL Delay
TD
150
ns
Leading Edge Blanking Period
TBL
DL(ON) blanking time
20
Pulse Width Modulator
Maximum Duty Cyclec
DMAX
VIN = 42 V, VINDET = 4.2 V
47
50
%
Maximum Duty Cycle Asymmetry
1
RDB Voltage
VRDB
VIN = 42 V, VINDET = 4.2 V
2.06
V
Oscillator
Oscillator Frequencyd
FOSC
680
800
920
kHz
Oscillator Bias Voltage
VROSC
2.36
V
Soft Start
Soft Start Charging Current
ISS
VSS = 0
- 26
- 20
- 14
µA
SS Ramp Completion Voltage
VSS
4.5
V
MOC Discharge Current
IDSS1
CS = VMOC
14
20
26
µA
SOC Discharge Current
IDSS2
CS = VSOC
400
nA
Reset Voltage
VSSL
CS < VMOC
0.25
V
Reference
Output Voltage
VREF
VCC = 12 V
3.2
3.3
3.4
V
Short Circuit Current
IREFSC
VREF = 0 V
- 50
- 42
mA
Load Regulation
ΔV
R/ΔIR
0 mA
≤ I
LOAD ≤ 2.5 mA
- 33
- 16
mV



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