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IR22771S PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR22771S
部品説明 Phase Current Sensor IC
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR22771S Datasheet, IR22771S PDF,ピン配置, 機能
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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