
Low-voltage hall latches enable high-sensitivity sensing
EP&T Magazine
Circuit Protection Electronics Power Supply / Management automotive BLDC brushless dc Hall-effect latches powerDIODES INC. AH171xQ series of automotive-compliant, low-voltage, high-sensitivity Hall-effect latches are designed for brushless dc (BLDC) motor commutation speed measurement, angular or linear encoders and position sensors in demanding automotive and industrial applications. Device options provide a choice of three high-sensitivity BOP and BRP settings (+/-7Gauss, +/-18Gauss, and +/-50Gauss) with tight operating windows to provide accurate and reliable switching points. Latches have a fast 30kHz sensing bandwidth to support higher rotational speed-sensing, while their high levels of protection against electrostatic discharge (ESD), 8kV human body model (HBM), and 2kV charge device model (CDM) ensure robust operation.