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Broadcom Announces Industry’s Most Efficient and Robust Current Sensing Optocoupler Solution for Servo Drives and Motors

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by August 31, 2016 General

SAN JOSE, Calif. and SINGAPORE, Aug. 31, 2016 (GLOBE NEWSWIRE) — Broadcom Limited (NASDAQ:AVGO), a leading designer, developer and global supplier of a broad range of analog and digital semiconductor connectivity solutions, today announced a new optically isolated sigma-delta modulator device, the Avago ACPL-C799, designed for a wide range of industrial applications including servo drives and motors. The new device features a low differential input range of +/-50 mV allowing designers to reduce power dissipation across a current-sensing shunt resistor in servo drive and motor applications.
Compared to previous generation products with an input range of +/-200 mV, the ACPL-C799 enables the use of a smaller shunt resistor with one-quarter the value, thereby eliminating 75 percent (75%) of shunt resistor’s power losses. Despite the reduced input voltage range, the device delivers superb SNR, ENOB and offset drift performance, enabling a high precision motor control in space constrained, high temperature environments.Product Highlights+/-50mV linear input rangeLow power dissipation across shunt resistorExtended range of current measurementsHigh performance 1-bit, 2nd order sigma-delta modulator77dB SNR typical16-bit resolution with no missing codes (12-bit ENOB)1.3µV/ oC maximum offset drift over temperature10MHz internal clockRobust optical isolation and insulation25kV/µs minimum common mode transient immunity (CMTI)Wide creepage and clearance of 8.3 mm meeting stringent system level safety regulationHigh reinforced insulation voltage of VIORM = 1414 VPEAK for reliable fail-safe protection in high voltage applicationsSafety approvals from CSA, UL and IEC enabling fast system level safety clearance and time to market.Compact stretched SO-8 packageOperating temperature from -40 oC to +105 oC“Driven by strong growth in industrial automation, more and more servo designers are looking for a highly efficient, robust current sensing solution that will serve many servo drive models and motors at different current levels,” said Tze Siong Chong, vice president and general manager of the Isolation Products Division at Broadcom. “Expanding upon Broadcom’s market-leading optically isolated current sensing portfolio, the ACPL-C799 is the latest addition that enables higher efficiency through shunt resistor size reduction while delivering improved performance with unparalleled robustness.”Availability

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