US 12,283,908 B2
Motor driver having temperature sensing mechanism
Kun-Min Chen, Hsinchu (TW); and Huan-Chieh Chou, Taoyuan (TW)
Assigned to ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed by ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed on Mar. 16, 2023, as Appl. No. 18/184,815.
Claims priority of application No. 112101277 (TW), filed on Jan. 12, 2023.
Prior Publication US 2024/0243688 A1, Jul. 18, 2024
Int. Cl. H02P 27/08 (2006.01); H02P 29/68 (2016.01)
CPC H02P 29/68 (2016.02) [H02P 27/085 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A motor driver having a temperature sensing mechanism, comprising:
a motor driving circuit, including:
a control circuit configured to determine a time for outputting a controlling signal according to a pulse-width modulation signal received from an external pulse-width modulation circuit connected to the control circuit;
a driving circuit connected to the control circuit and configured to output a driving signal according to the controlling signal received from the control circuit; and
an output stage circuit connected to the driving circuit and a motor, and configured to operate according to the driving signal received from the driving circuit to output an output stage signal to the motor to drive the motor to rotate; and
a thermal sensor circuit connected to the control circuit and configured to sense a temperature of the motor driving circuit to output a temperature sensing signal;
wherein the control circuit receives the pulse-width modulation signal from the external pulse-width modulation circuit through one of a plurality of pins of the motor driver, and the thermal sensor circuit outputs the temperature sensing signal to an external system circuit through the one or another one of the plurality of pins of the motor driver.