Patents by Inventor Chiping Sun
Chiping Sun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20210210417Abstract: An IC includes a bare die and a multiplexed pin. The multiplexed pin is electrically connected to first and second switch circuits, the first and second switch circuits are respectively connected to first and second circuit modules disposed on the bare die and control a connection between the first and second circuit modules and the multiplexed pin, the first switch circuit is connected to a first die pad by a metal layer trace within the bare die, the second switch circuit is connected to a second die pad by a metal layer trace within the bare die, and the first and second die pads are connected to the multiplexed pin through a bond wire respectively. The bare die with a larger number of die pads can be packaged into an IC package with a smaller number of chip pins.Type: ApplicationFiled: March 25, 2021Publication date: July 8, 2021Inventors: Chiping SUN, Shinghin YEUNG, Haibo JIANG, Qiubao WANG, Enhui WANG
-
Patent number: 10991642Abstract: An IC includes a bare die and a multiplexed pin. The multiplexed pin is electrically connected to first and second switch circuits, the first and second switch circuits are respectively connected to first and second circuit modules disposed on the bare die and control a connection between the first and second circuit modules and the multiplexed pin, the first switch circuit is connected to a first die pad by a metal layer trace within the bare die, the second switch circuit is connected to a second die pad by a metal layer trace within the bare die, and the first and second die pads are connected to the multiplexed pin through a bond wire respectively. The bare die with a larger number of die pads can be packaged into an IC package with a smaller number of chip pins.Type: GrantFiled: February 4, 2019Date of Patent: April 27, 2021Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Qiubao Wang, Enhui Wang
-
Patent number: 10738790Abstract: A motor-driven fan device includes a motor, a processor, a storage with a lookup table stored therein, and a speed detection unit. The processor queries the lookup table or calculates to acquire the target driving voltage and a corresponding target rotating speed of the motor. When the rotating speed difference is not within the range of the preset rotating speed difference, the processor repeatedly adds a gain value to the target driving voltage to acquire a new target driving voltage, acquires the actual rotating speed and the target rotating speed, and determines whether the rotating speed difference is within the range of the preset rotating speed difference. The processor maintains the operation of the motor at the target rotating speed at that point by using the constant speed control method when the absolute value of rotating speed difference is within the range of the preset rotating speed difference.Type: GrantFiled: January 22, 2018Date of Patent: August 11, 2020Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Yunlong Jiang, Guodong Liu, Zhiwang Chen
-
Patent number: 10707787Abstract: A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.Type: GrantFiled: August 24, 2018Date of Patent: July 7, 2020Assignee: Johnson Electric International AGInventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Guodong Liu, Shujuan Huang
-
Patent number: 10566924Abstract: A motor-driven integrated circuit comprises a PWM output unit and an overcurrent comparator coupled with the PWM output unit. The overcurrent comparator receives a detection signal and compares the detection signal with a reference value. When the detection signal is larger than the reference value, the overcurrent comparator outputs an overcurrent protection signal to control the PWM output unit enter an overcurrent protection mode.Type: GrantFiled: November 3, 2017Date of Patent: February 18, 2020Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Qiubao Wang, Ken Wong, Enhui Wang, Haibo Jiang, Yunlong Jiang
-
Patent number: 10505434Abstract: A motor and an application apparatus are provided. The motor includes a stator having a stator core and a stator winding wound on the stator core, a rotor, a magnetic sensor configured to detect a magnetic field polarity of the rotor and output a corresponding signal, and a motor driving circuit configured to drive the rotor to rotate with respect to the stator based on the signal output from the magnetic sensor. At a rest position of the rotor, the magnetic sensor is arranged with an advance angle with respect to a polar axis of the rotor, to make the motor have a high starting torque.Type: GrantFiled: November 14, 2017Date of Patent: December 10, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Fei Xin, Shinghin Yeung, Xiuwen Yang, Shujuan Huang, Yunlong Jiang
-
Patent number: 10483948Abstract: A RC oscillator comprises a resistor unit. The resistor unit can comprise at least one set of compensation resistor. Each set of compensation resistor comprises a positive temperature coefficient resistor and a negative temperature coefficient resistor coupled in series with the positive temperature coefficient resistor.Type: GrantFiled: November 3, 2017Date of Patent: November 19, 2019Assignee: Johnson Electric International AGInventors: Chiping Sun, Ken Wong, Huimin Guo, Yat Tung Lai, Shujuan Huang
-
Publication number: 20190244880Abstract: An IC includes a bare die and a multiplexed pin. The multiplexed pin is electrically connected to first and second switch circuits, the first and second switch circuits are respectively connected to first and second circuit modules disposed on the bare die and control a connection between the first and second circuit modules and the multiplexed pin, the first switch circuit is connected to a first die pad by a metal layer trace within the bare die, the second switch circuit is connected to a second die pad by a metal layer trace within the bare die, and the first and second die pads are connected to the multiplexed pin through a bond wire respectively. The bare die with a larger number of die pads can be packaged into an IC package with a smaller number of chip pins.Type: ApplicationFiled: February 4, 2019Publication date: August 8, 2019Inventors: Chiping SUN, Shinghin YEUNG, Haibo JIANG, Qiubao WANG, Enhui WANG
-
Patent number: 10340824Abstract: A motor-driven integrated circuit comprises a plurality of position comparators, a timer and a central processing. Each of the plurality of position comparators receives a pole detection signal denoted a position of a rotor of a motor. The timer receives a timing interrupt signal output by the plurality of position comparators when a predetermined edge of the pole detection signal is generated and records a time of the predetermined edge. The central processing unit obtains a rotation speed of the motor according to a time difference between two predetermined edges.Type: GrantFiled: November 3, 2017Date of Patent: July 2, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Qiubao Wang, Ken Wong, Enhui Wang, Haibo Jiang, Shujuan Huang
-
Patent number: 10323961Abstract: A motor driver integrated circuit comprises a central processing unit, a memory, and a multiple-time programmable memory. The multiple-time programmable memory is configured to store a motor driver program, the memory has a capacity larger than or equal to a capacity of the multiple-time programmable memory. When the motor driver integrated circuit is powered or reset, the central processing unit copies the driven program from the multiple-time programmable memory to the memory. The motor driver integrated circuit is low in cost. The present invention also provides a motor device having the motor driver integrated circuit.Type: GrantFiled: November 3, 2017Date of Patent: June 18, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Chiping Sun, Qiubao Wang, Ken Wong, Enhui Wang, Haibo Jiang, Yunlong Jiang
-
Patent number: 10230316Abstract: A motor driving device for brushless direct current motors and an application apparatus thereof are provided. The motor driving device includes an inverter, a plurality of motor branches, and a microprocessor. The inverter includes a plurality of semiconductor switches to output an alternating current power via a first output terminal and a second output terminal. The plurality of motor branches are connected in parallel between the first output terminal and the second output terminal of the inverter, and each of the plurality of motor branches comprising a motor and a controllable bidirectional alternating current switch connected in series. The microprocessor controls a conduction manner of the semiconductor switches in the inverter, and whether to turn of the controllable bidirectional alternating current switch in each of the plurality of motor branches.Type: GrantFiled: November 20, 2017Date of Patent: March 12, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Yue Li, Chiping Sun, Fei Xin, Shinghin Yeung, Xiuwen Yang, Shujuan Huang
-
Publication number: 20190068094Abstract: A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.Type: ApplicationFiled: August 24, 2018Publication date: February 28, 2019Inventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Guodong Liu, Shujuan Huang
-
Publication number: 20180209433Abstract: A motor-driven fan device includes a motor, a processor, a storage with a lookup table stored therein, and a speed detection unit. The processor queries the lookup table or calculates to acquire the target driving voltage and a corresponding target rotating speed of the motor. When the rotating speed difference is not within the range of the preset rotating speed difference, the processor repeatedly adds a gain value to the target driving voltage to acquire a new target driving voltage, acquires the actual rotating speed and the target rotating speed, and determines whether the rotating speed difference is within the range of the preset rotating speed difference. The processor maintains the operation of the motor at the target rotating speed at that point by using the constant speed control method when the absolute value of rotating speed difference is within the range of the preset rotating speed difference.Type: ApplicationFiled: January 22, 2018Publication date: July 26, 2018Inventors: Chiping SUN, Shinghin YEUNG, Haibo JIANG, Yunlong JIANG, Guodong LIU, Zhiwang CHEN
-
Publication number: 20180145614Abstract: A motor driving device for brushless direct current motors and an application apparatus thereof are provided. The motor driving device includes an inverter, a plurality of motor branches, and a microprocessor. The inverter includes a plurality of semiconductor switches to output an alternating current power via a first output terminal and a second output terminal. The plurality of motor branches are connected in parallel between the first output terminal and the second output terminal of the inverter, and each of the plurality of motor branches comprising a motor and a controllable bidirectional alternating current switch connected in series. The microprocessor controls a conduction manner of the semiconductor switches in the inverter, and whether to turn of the controllable bidirectional alternating current switch in each of the plurality of motor branches.Type: ApplicationFiled: November 20, 2017Publication date: May 24, 2018Inventors: Yue LI, Chiping SUN, Fei XIN, Shinghin YEUNG, Xiuwen YANG, Shujuan HUANG
-
Publication number: 20180138848Abstract: A motor driving circuit for driving a rotor of a motor to rotate with respect to a stator is disclosed. The motor driving circuit includes a controllable bidirectional alternating current (AC) switch, first and second detection circuits, a rotation direction control circuit, and a switch control circuit. The first and second detection circuits detect positions of magnetic poles of the rotor, and output magnetic pole position signals having opposite phases when detecting a same magnetic pole of the rotor. The rotation direction control circuit is configured to selectively output the magnetic pole position signal from the first or the second detection circuits to the switch control circuit according to a rotation direction setting signal of the motor. The switch control circuit is configured to control the controllable bidirectional AC switch to be switched between a switch-on state and a switch-off state to control the motor to rotate in two directions.Type: ApplicationFiled: November 14, 2017Publication date: May 17, 2018Inventors: Chiping SUN, Xiuwen YANG, Shinghin YEUNG, Shujuan HUANG, Yunlong JIANG
-
Publication number: 20180138842Abstract: A motor and a driving circuit thereof are provided. The motor driving circuit includes a controllable bidirectional AC switch connected with a winding of the motor between two terminals of an AC power supply; and first and second position sensors. The first position sensor and the second position sensor are respectively configured to detect positions of magnetic poles of the rotor. The first position sensor and the second position sensor output magnetic pole position signals having opposite phases when detecting a same magnetic pole of the rotor. At a rest position of the motor, the first position sensor and the second position sensor are respectively arranged with an advance angle with respect to a connection line crossing centers of opposite magnetic poles of the rotor, to make the motor have large starting torque.Type: ApplicationFiled: November 14, 2017Publication date: May 17, 2018Inventors: Chiping SUN, Xiuwen YANG, Shinghin YEUNG, Shujuan HUANG, Yunlong JIANG
-
Publication number: 20180138791Abstract: A motor and an application apparatus are provided. The motor includes a stator having a stator core and a stator winding wound on the stator core, a rotor, a magnetic sensor configured to detect a magnetic field polarity of the rotor and output a corresponding signal, and a motor driving circuit configured to drive the rotor to rotate with respect to the stator based on the signal output from the magnetic sensor. At a rest position of the rotor, the magnetic sensor is arranged with an advance angle with respect to a polar axis of the rotor, to make the motor have a high starting torque.Type: ApplicationFiled: November 14, 2017Publication date: May 17, 2018Inventors: Chiping SUN, Fei XIN, Shinghin YEUNG, Xiuwen YANG, Shujuan HUANG, Yunlong JIANG
-
Publication number: 20180131295Abstract: A motor-driven integrated circuit can include a bare die having an 8-bit microcontroller. The 8-bit microcontroller is fabricated by a 0.15 ?m semiconductor process.Type: ApplicationFiled: November 3, 2017Publication date: May 10, 2018Inventors: Chiping SUN, Ken WONG, Huimin GUO, Yat Tung LAI, Yunlong JIANG
-
Publication number: 20180131309Abstract: A motor-driven integrated circuit comprises a PWM output unit and an overcurrent comparator coupled with the PWM output unit. The overcurrent comparator receives a detection signal and compares the detection signal with a reference value. When the detection signal is larger than the reference value, the overcurrent comparator outputs an overcurrent protection signal to control the PWM output unit enter an overcurrent protection mode.Type: ApplicationFiled: November 3, 2017Publication date: May 10, 2018Inventors: Chiping SUN, Qiubao WANG, Ken WONG, Enhui WANG, Haibo JIANG, Yunlong JIANG
-
Publication number: 20180130794Abstract: An electronic circuit includes an output port, a first AC input port and a second AC input port connecting with an external AC power source, a rectifier circuit and an electrostatic protection circuit. The rectifier circuit includes a first input terminal coupling with the first AC input port, a second input terminal coupling with the second AC input port, a first output terminal and a second output terminal. A voltage of the first output terminal is larger than a voltage of the second output terminal. The electrostatic protection circuit includes a first unidirectional electrostatic protection circuit coupled between the first output terminal of the rectifier circuit and the second output terminal of the rectifier circuit.Type: ApplicationFiled: November 3, 2017Publication date: May 10, 2018Inventors: Chiping SUN, Ken WONG, Shujuan HUANG, Yunlong JIANG, Shinghin YEUNG