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International Rectifier Electronic Components Datasheet

IR22771S Datasheet

Phase Current Sensor IC

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Data Sheet No. PD60234 revB
IR22771S/IR21771S(PbF)
Phase Current Sensor IC for AC motor control
Features
Floating channel up to 600V for IR21771 and 1200V for
IR22771
Synchronous sampling measurement system
www.DataSheet4U.comHigh PWM noise (ripple) rejection capability
Digital PWM output
Fast Over Current detection
Suitable for bootstrap power supplies
Low sensing latency (<7.5 µsec @20kHz)
Product Summary
VOFFSET (max)
IR22771
IR21771
Vin range
Bootstrap supply range
Floating channel quiescent
current (max)
Sensing latency (max)
Throughput
Over Current threshold (max)
1200 V
600V
±250mV
8-20 V
2.2 mA
7.5 µsec
(@20kHz)
40ksample/sec
(@20kHz)
±470 mV
Description
IR21771/IR22771 is a high voltage, high speed, single phase
current sensor interface for AC motor drive applications. The
current is sensed by an external shunt resistor. The IC converts the
analog voltage into a time interval through a precise circuit that also
performs a very good ripple rejection showing small group delay.
The time interval is level shifted and given to the output. The max
throughput is 40 ksample/sec suitable for up to 20 kHz
asymmetrical PWM modulation and max delay is <7.5µsec
(@20kHz). Also a fast over current signal is provided for IGBT
protection.
Package
Typical Connection
(Please refer to
Lead Assignments
for correct pin
configuration. This
diagram shows
electrical
connections only)
1
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International Rectifier Electronic Components Datasheet

IR22771S Datasheet

Phase Current Sensor IC

No Preview Available !

IR22771S/IR21771S(PbF)
Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are absolute voltages referenced to VSS; all currents are defined positive into any lead. The Thermal Resistance and Power
Dissipation ratings are measured under board mounted and still air conditions.
Symbol
Definition
VB
VS
Vin+ / Vin-
G0 / G1
VCC
www.DataSheetS4Uy.nccom
PO
OC
dVS/dt
PD
RthJA
TJ
TS
TL
High Side Floating Supply Voltage
High Side Floating Ground Voltage
High-Side Inputs Voltages
High-Side Range Selectors
Low-Side Fixed Supply Voltage
Low-Side Input Synchronization Signal
PWM Output
Over Current Output Voltage
Allowable Offset Voltage Slew Rate
Maximum Power Dissipation
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
IR22771
IR21771
Min.
- 0.3
- 0.3
VB - 25
VB - 5
VB - 0.3
- 0.3
- 0.3
- 0.3
- 0.3
-40
-55
Max.
1225
625
VB + 0.3
VB + 0.3
VB + 0.3
25
VCC + 0.3
VCC + 0.3
VCC + 0.3
50
250
90
125
150
300
Units
V
V
V
V
V
V
V
V
V
V/ns
mW
ºC/W
ºC
ºC
ºC
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions. All voltage parameters are absolute
voltages referenced to VSS. The VS offset rating is tested with all supplies biased at 15V differential.
Symbol
Definition
Min.
Max.
Units
VBS High Side Floating Supply Voltage (VB- VS)
VS + 8.0
VS + 20
V
VS High Side Floating Ground Voltage
IR22771
IR21771
-5
-5
1200
600
V
V
Vin+ / Vin-
G0 / G1
High-Side Inputs Voltages
High-Side Range Selectors
VS - 5.0
Note 1
VS + 5.0
Note1
V
VCC
Sync
fsync
PO
Low Side Logic Fixed Supply Voltage
Low-Side Input Synchronization Signal
Sync Input Frequency
PWM Output
8 20 V
VSS
VCC
V
4 20 kHz
-0.3
Note 2
V
OC Over Current Output Voltage
-0.3
Note 2
V
TA Ambient Temperature
Note 1: Shorted to VS or VB
Note 2: Pull-Up Resistor to VCC
-40 125 ºC
2 www.irf.com


Part Number IR22771S
Description Phase Current Sensor IC
Maker International Rectifier
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IR22771S Datasheet PDF






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