Digital optocouplers for hybrid and electric vehicles

Oct. 19, 2011
The ACPL-K4xT optocouplers are qualified to AEC-Q100 Grade 1 stress-test requirements for automotive applications.

Three new digital optocouplers are for onboard chargers and other high-voltage systems in hybrid and electric vehicles. The ACPL-K4xT optocouplers are qualified to AEC-Q100 Grade 1 stress-test requirements for automotive applications. The working voltage, 1,140 V, lets users standardize battery management for midvoltage car batteries, high-voltage bus and truck batteries, and future high-voltage batteries.

The devices have reinforced insulation for signal isolation. The small surface-mount package meets the 8-mm creepage and clearance distance required for high-voltage safety regulations.

The unit’s low-power consumption helps prevent battery-management systems from draining vehicle batteries. The devices feature no quiescent current and, thus, do not draw power in the “off” state. Also, current used by both their LED and detector IC can be set as low as 1.5 mA/channel for low-speed switching.

Avago Technologies, 350 W. Trimble Rd., Building 90, San Jose, CA 95131, (800) 235-0312, www.avagotech.com

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