IC(Integrated Circuits) Texas Instruments(TI) Texas Instruments

The UCC3626 is designed to operate with 120° position sensor encoding. In this format, the three position sensor signals are never simultaneously high or low. Motors whose sensors provide 60° encoding, can be converted to 120° using the circuit shown in Figure 1. In order to prevent noise from commanding improper commutation states, some form of low-pass filtering on HALLA, HALLB, and HALLC is recommended. Passive RC networks generally work well and should be located as close as possible to the device. Figure 2 illustrates these techniques.