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IRS2548DSPBF Datasheet(PDF) 7 Page - International Rectifier

Part # IRS2548DSPBF
Description  Critical-conduction mode boost-type PFC
Download  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IRS2548DSPBF Datasheet(HTML) 7 Page - International Rectifier

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IRS2548D
www.irf.com
© 2011 International Rectifier
7
Electrical Characteristics (cont’d)
VCC = VBS = VBIAS=14V +/- 0.25V, CLO = CHO = CPFC = 1000pF, RFMIN = 42.2kOhm,
VENN = VCOMP = VCS = VOC = VBUS = VZX = 0V, TA=25C unless otherwise specified.
Symbol
Definition
Min
Typ
Max
Units Test Conditions
Floating Supply Characteristics
IBS
VBS Supply Current
---
0.9
1.3
mA
MODE=RUN
VBSUV+
VBS Supply Undervoltage Positive Going
Threshold
8.0
9.0
10.0
VBS rising from
0V
VBSUV-
VBS Supply Undervoltage Negative
Going Threshold
7.0
8.0
9.0
V
VBS falling from
14V
ILKVS
VS Offset Supply Leakage Current
---
---
50
uA
VB = VS = 600V
PFC Error Amplifier Characteristics
ICOMP
SOURCE
COMP Pin OTA Error Amplifier Output
Current Sourcing
---
30
---
uA
MODE = RUN
VVBUS = 3.5V
VCOMP=4.0V
ICOMP
SINK
COMP Pin OTA Error Amplifier Output
Current Sinking
---
-30
---
MODE = RUN
VVBUS = 4.5V
VCOMP=4.0V
VCOMPOH
OTA Error Amplifier Output Voltage
Swing (high state)
---
12.5
---
V
VBUS=3.5V
ICOMP=ICOMP_
SOURCE - 5uA
VCOMPOL
OTA Error Amplifier Output Voltage
Swing (low state)
---
0.4
---
VBUS=5.0V
ICOMP=ICOMP_
SINK + 5uA
VCOMPFLT
OTA Error Amplifier Output Voltage in
Fault Mode
---
0
---
VBUS=4.0V
PFC Control Characteristics
VVBUS
REG
VBUS Internal Reference Voltage
3.93
4.03
4.13
VVBUSOV
VBUS Over-voltage Comparator
Threshold
4.1
4.3
4.5
V
VVBUSOV
HYS
VBUS Over-voltage Comparator
Hysteresis
50
150
300
mV
VCOMP = 4.0V
VZX
ZX Pin Threshold Voltage
1.8
2.0
2.2
V
VZXhys
ZX pin Comparator Hysteresis
---
300
---
mV
VZXclamp
ZX pin Clamp Voltage (high state)
---
6.7
---
V
IZX = 1mA
tBLANK
OC pin current-sensing blank time
---
300
---
ns
VBUS=4.0V
VCOMP=4.0V
tWD
PFC Watch-dog Pulse Interval
---
400
---
us
ZX = 0, VCOMP
= 4.0V
PFC Protection Circuitry Characteristics
VOCTH+
OC Pin Over-current Sense Threshold
1.1
1.2
1.3
VBUS=VCOMP
=4.0V


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