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| 型号： | IR2277STRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC CURRENT SENSE 0.2& 16SOIC |
| 标准包装： | 1,000 |
| 功能： | 电流感应 |
| 精确度： | ±0.2% |
| 输入电压： | 8 V ~ 20 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
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
Product Summary
V OFFSET (max) IR2277
IR2177
1200 V
600 V
?
?
?
?
?
?
?
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 μ sec @20kHz)
Ratiometric analog output suitable for DSP A/D interface
V in range
Bootstrap supply range
Floating channel quiescent
current (max)
Sensing latency (max)
Throughput
Over Current threshold
(max)
±250mV
8-20 V
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 μ sec (@20kHz). Also a fast over
current signal is provided for IGBT protection.
Typical Connection
(Please refer to
Lead Assignments
for correct pin
configuration. This
diagram shows
electrical
connections only)
1
Package
www.irf.com
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