High-Voltage, Automotive-Compliant, Hall-Effect Latches from Diodes Incorporated Provide Improved Resistance to Physical Stress

Diodes Incorporated adds the AH371xQ series of high-voltage Hall-effect latches to its product portfolio. These automotive-compliant devices feature a proprietary Hall plate design that boosts performance. They are used for brushless DC (BLDC) motor control, valve operation, linear and incremental rotary encoders, and position-sensing functions. Based on this, the AH371xQ series can support numerous in-vehicle comfort and engine management applications—including window power-lift and sunroof movement, tailgate opening/closing mechanisms, seat adjustment motors, cooling fans, water/oil pumps, and speed measurement.

These Hall-effect latches have an operating voltage range from 3V to 27V, with 40V load dump protection. This gives them the versatility to integrate into a wide variety of automotive systems. The devices have a chopper-stabilized design that mitigates the effects of thermal variation and provides enhanced stray field immunity. Their power-on time is typically 13µs.

Covering 25 gauss to 140 gauss, there is a selection of six sensitivity options, with tight operating windows and low temperature coefficients for switch points (more info).