IR’s Robust 600V IR25750 SOT-23 Current Sensing IC Boosts Overall System Efficiency While Delivering Dramatic Space Savings

International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today announced the introduction of the robust IR25750 general purpose current sensing IC available in an ultra-compact SOT23-5L package that boosts overall system efficiency while delivering dramatic space savings for high current applications.

Measuring high currents (10-100A) through a power MOSFET or IGBT typically requires a large resistor which generates excess power losses (10~30W). By extracting the voltage across the internal Rds(on) of a power MOSFET or the VCE(on) of an IGBT during the switch’s on-time, the IR25750 eliminates large external current sensing resistors, heatsinks, and excess power losses.

The IR25750’s gate drive input provides the VCC supply voltage to the IC and synchronizes the Rds(on) or VCE(on) sensing circuit to the on and off times of the MOSFET or IGBT. Leveraging IR’s proprietary high-voltage technology, the device also features 600V blocking capability necessary for blocking high VDS or VCE voltages during the switch off-time. Other key features include low gate input capacitance, internal filter delay at turn-on (200 nsec typ.) and internal 20.8 V zener clamps on GATE and CS pins.

“The IR25750 current sensing IC is a novel building block that uses the Rds(on) of a power MOSFET or the VCE(on) of an IGBT to measure current, eliminating the need for large external current sensing resistors,” said Tom Ribarich, Director of Lighting Systems and Applications, IR’s Energy Saving Products Business Unit. “These features enable dramatic efficiency and space savings in high current applications including general purpose switch mode power electronics, motor control and industrial equipment,” he added.

Featuring integrated ESD and excellent latch immunity on all inputs and outputs to enable rugged monolithic protection, the IR25750 is qualified to industrial grade and moisture sensitivity level 1 (MSL1).

More information is available on the International Rectifier website at http://www.irf.com/press-room/press-releases/nr140320

Availability and Pricing

Pricing for the IR25750LPbF begins at US $0.23 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR’s analog- and mixed-signal ICs, advanced circuit devices, integrated power systems, and components enable high-performance computing and reduce energy waste from motors, the world’s single largest consumer of electricity. Leading manufacturers of computers, energy-efficient appliances, lighting, automobiles, satellites, aircraft, and defense systems rely on IR’s power-management benchmarks to power their next generation products. For more information, go to www.irf.com.

Trademark Notice

IR® is a registered trademark of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.