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IR2177S PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR2177S
部品説明 Phase Current Sensor IC
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR2177S Datasheet, IR2177S PDF,ピン配置, 機能
Data Sheet No. PD60233 revB
IR2277S/IR2177S(PbF)
Phase Current Sensor IC for AC motor control
Features
Floating channel up to 600 V for IR2177 & 1200 V for
IR2277
Synchronous sampling measurement system
High PWM noise (ripple) rejection capability
Digital PWM output
Fast Over Current detection
Suitable for bootstrap power supplies
Low sensing latency (<7.5 µsec @20kHz)
Ratiometric analog output suitable for DSP A/D interface
Product Summary
VOFFSET (max) IR2277
1200 V
IR2177 600 V
Vin range
±250mV
Bootstrap supply range
8-20 V
Floating channel quiescent
current (max)
Sensing latency (max)
Throughput
Over Current threshold
(max)
2.2 mA
7.5 µsec
(@20kHz)
40ksample/sec
(@20kHz)
±470 mV
Description
IR2177/IR2277 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 both as a
PWM signal (PO) and analog voltage (OUT). The analog voltage is
proportional to the measured current and is ratio metric with respect
to an externally provided voltage reference. The max throughput is
40 ksample/sec suitable for up to 20 kHz asymmetrical PWM
modulation and max delay is <7.5 µsec (@20kHz). Also a fast over
current signal is provided for IGBT protection.
Typical Connection
Package
(Please refer to
Lead Assignments
for correct pin
configuration. This
diagram shows
electrical
connections only)
1
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