Self-diagnostic Hall-effect switches are automotive-qualified
Two-wire Hall effect switches, announced by Diodes, are automotive-compliant and have self-diagnostics for sensitive and stable performance.
The automotive-compliant, two-wire, uni-polar (AH323xQ/4xQ) and latch (AH327xQ/8xQ) switch ICs provide high sensitivity and high stability over wide operating voltage and temperature ranges, claims Diodes. The ICs can be used in automotive proximity- and position-sensing applications, including seatbelt buckle, power window, gear selector and seat position. Adopting two-wire Hall-effect switches reduces the number of wires required in a harness, explains Diodes. This reduces both system complexity and cost and improves the robust performance to electrical noise, continued the company.
The AH324xQ and AH328xQ have integrated self-diagnostics which continually monitor the main device blocks, supply voltage, and temperature. There is a third output state that warns of an abnormal condition. These devices are ISO 26262 ASIL-B ready. They have been developed using rigorous design processes with safety analysis conducted in accordance with the ISO 26262 standard.
Diodes adopted an advanced chopper stabilised design, for stable magnetic operating and release points over the 2.7 to 27V operating voltage and over a -40 to +150 degrees C range. The AH32xxQ series also has a high ESD rating of 8kV, built-in reverse blocking diode, and supply pin Zener clamp to meet the demanding requirements of automotive proximity/position-sensing applications.
The AH324xQ and AH328xQ devices are supplied in the SC59 package. They are qualified to AEC-Q100, manufactured in IATF 16949 certified facilities, and support PPAP documentation.
Diodes provides semiconductor products to customers in the consumer electronics, computing, communications, industrial, and automotive markets around the world. Its product portfolio consists of discrete, analogue and mixed-signal products and packaging technology.
The company has operations in 28 sites, including engineering, testing, manufacturing, and customer service.
