The IR2175 is a monolithic current sensing IC designed for motor drive applications. It senses the motor phase current through an external shunt resistor, converts from analog to digital signal, and transfers the signal to the low side. IR’s proprietary high voltage isolation technology is implemented to enable the high bandwidth signal processing. The output format is discrete PWM to eliminate need for the A/D input interface for the IR2175. The dedicated overcurrent trip (OC) signal fa- cilitates IGBT short circuit protection. The open-drain outputs make easy for any interface from 3.3V to 15V.
This datasheet describes the IR2175 linear current sensing IC, a monolithic device for motor‑drive applications that senses phase current through an external shunt resistor and outputs a digital PWM signal. The document lists key features such as a floating channel up to +600 V, high‑voltage isolation, and an independent over‑current trip output.
Detailed sections cover absolute maximum ratings, recommended operating conditions, DC and AC electrical characteristics, timing waveforms, lead definitions, mechanical outlines, and ordering information for both lead‑free (PbF) and standard versions of the part.
| Floating channel voltage | +600 V |
|---|---|
| High side offset voltage (Vs) | -0.3 V to 600 V |
| Input voltage range (VIN) | -260 mV to +260 mV |
| Over‑current trip level | ±260 mV (typ.) |
| Package power dissipation (SOIC) | 0.625 W |
| Quiescent VCC supply current | 0.5 mA |
| PWM output sink current | 20 µA |
The device supports a floating channel voltage up to +600 V.
The input voltage range is ±260 mV between VIN+ and VS.
The IC is offered in 8‑lead PDIP and 8‑lead SOIC packages.
The over‑current trip output voltage is within ±0.3 V of the supply rail (COM to VCC).