Non-chopper-stabilized versus chopper-stabilized bipolar latching Hall-effect sensors

Test results show significantly higher performance can be achieved using a quad hall element and proprietary programming without chopper stabilization. Honeywell Sensing and Control has developed a high sensitivity and fast response bipolar latching sensor by using a quad Hall element and proprietary programming without chopper stabilization. This new design offers several benefits including high sensitivity, repeatability, and fast response time, that all contribute to an efficient BLDC motor design. This paper shows the results of a low gauss latch competitive evaluation between Honeywell’s non-chopper-stabilized SS460S bipolar latching Hall-effect sensor and five chopper-stabilized competitor products. Tests include response time, repeatability, and sensitivity to air gap. The results indicate that Honeywell’s SS460S Hall-effect sensor delivers better performance, offering a 10- to 20-microsecond (µs) faster response time, compared to the chopper-stabilized sensor samples, including two parts that offer higher sensitivity than the Honeywell SS460S sensor.