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IR3551 Datasheet(PDF) 6 Page - International Rectifier

Part No. IR3551
Description  50A Integrated PowIRstage
Download  22 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3551 Datasheet(HTML) 6 Page - International Rectifier

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July 16, 2013 | DATASHEET V3.2
6
IR3551
50A Integrated PowIRstage®
ELECTRICAL SPECIFICATIONS
The electrical characteristics involve the spread of values guaranteed within the recommended operating conditions.
Typical values represent the median values, which are related to 25°C.
RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN
PARAMETER
SYMBOL
MIN
MAX
UNIT
Recommended VIN Range
VIN
4.5
15
V
Recommended VCC Range
VCC
4.5
7
V
Recommended REFIN Range
REFIN
0.25
VCC - 2.5
V
Recommended Switching Frequency
ƒSW
200
1000
kHz
Recommended Operating Junction Temperature
TJ
-40
125
°C
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
Efficiency and Maximum Current
IR3551 Peak Efficiency
Note 1
η
Note 2. See Figure 2.
94.0
%
Note 3. See Figure 7.
93.4
%
IR3551 Maximum DC Current
Note 1
IDC_MAX
Note 2.
50
A
IR3551 Maximum Peak Current
Note 1
IPK_MAX
Note 4. 5ms load pulse
width, 10% load duty cycle.
75
A
PWM Comparator
PWM Input High Threshold
VPWM_HIGH
PWM Tri-state to High
2.5
V
PWM Input Low Threshold
VPWM_LOW
PWM Tri-state to Low
0.8
V
PWM Tri-state Float Voltage
VPWM_TRI
PWM Floating
1.2
1.65
2.1
V
Hysteresis
VPWM_HYS
Active to Tri-state or Tri-
state to Active, Note 1
65
76
100
mV
Tri-state Propagation Delay
tPWM_DELAY
PWM Tri-state to Low
transition to GATEL >1V
38
ns
PWM Tri-state to High
transition to GATEH >1V
18
ns
PWM Sink Impedance
RPWM_SINK
3.67
5.1
8.70
PWM Source Impedance
RPWM_SOURCE
3.67
5.1
8.70
Internal Pull up Voltage
VPWM_PULLUP
VCC > UVLO
3.3
V
Minimum Pulse Width
tPWM_MIN
Note 1
41
58
ns
Current Sense Amplifier
CSIN+/- Bias Current
ICSIN_BIAS
-100
0
100
nA
CSIN+/- Bias Current Mismatch
ICSIN_BIASMM
-50
0
50
nA
Calibrated Input Offset Voltage
VCSIN_OFFSET
Self-calibrated offset,
0.5V ≤ V(REFIN) ≤ 2.25V
±450
µV


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