US 12,424,951 B2
Non-polar supply circuit for brushless DC motor and control methods thereof
Chao Song, Xuancheng (CN); Fei Chen, Xuancheng (CN); and Dongqiang Xu, Xuancheng (CN)
Assigned to GUANGDE JIURUI MOTOR CO., LTD., Xuancheng (CN)
Filed by GUANGDE JIURUI MOTOR CO., LTD., Anhui (CN)
Filed on Dec. 28, 2023, as Appl. No. 18/399,639.
Application 18/399,639 is a continuation of application No. PCT/CN2023/098508, filed on Jun. 6, 2023.
Claims priority of application No. 202210355349.1 (CN), filed on Apr. 6, 2022.
Prior Publication US 2024/0128900 A1, Apr. 18, 2024
Int. Cl. H02P 6/08 (2016.01); H02P 6/30 (2016.01)
CPC H02P 6/08 (2013.01) [H02P 6/30 (2016.02)] 6 Claims
OG exemplary drawing
 
1. A non-polar supply circuit for a brushless DC motor, comprising,
a pre-drive and power switching circuit connected to the brushless DC motor;
a polarity judgment circuit;
a voltage sampling circuit;
a current sampling circuit; and
a microcontroller chip with at least 15 pins, comprising a GPIO1 pin, a GPIO2 pin, a VDD pin, a VSS pin, an ADC_IN1 pin, an ADC_IN2 pin, an ADC_IN3 pin, an ADC_IN4 pin, an ADC_IN5 pin, a PWM1P pin, a PWM1N pin, a PWM2P pin, a PWM2N pin, a PWM3P pin, and a PWM3N pin;
wherein the GPIO1 pin and the GPIO2 pin are connected to the polarity judgment circuit, the VDD pin is a power input, the VSS pin is a ground pin, the ADC_IN4 pin is connected to the voltage sampling circuit, the ADC_IN5 pin is connected to the current sampling circuit, the ADC_IN1, the ADC_IN2 pin, the ADC_IN3 pin, the PWM1P pin, the PWM1N pin, the PWM2P pin, the PWM2N pin, the PWM3P pin, and the PWM3N pin are connected to the pre-drive and power switching circuit, respectively.