Power delivery controller applied to a power converter and operation method thereof

• US 10,571,986 B2
• Filed: 04/18/2018
• Issued: 02/25/2020
• Est. Priority Date: 04/21/2017
• Status: Active Grant

• Current Assignee: Leadtrend Technology Corporation
• Original Assignee: Leadtrend Technology Corporation
• Inventors: Chien, Ming-Hung, Li, Chun-Hsin, Lee, Ching-Tsan
• Primary Examiner(s): Johnson, Terrell S
• Application Number:
  US15/956,739
• Publication Number:
  US 20180307289A1
• Time in Patent Office: 678 Days
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02M 3/335 using semiconductor devices only

Abstract

A power delivery controller applied to a power converter includes a voltage compensation circuit and a comparator. The voltage compensation circuit is used for generating a compensation reference voltage, receiving a response signal through a universal serial bus type-C cable, and generating a response voltage when an electronic device coupled to the universal serial bus type-C cable generates the response signal corresponding to a Biphase Mark Coding (BMC) signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the universal serial bus type-C cable. The comparator is used for generating a comparison signal according to the response voltage and the compensation reference voltage, wherein the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery (USB-PD) after the comparator generates the comparison signal.

Claims

1. A power delivery controller applied to a power converter, comprising:

a voltage compensation circuit for coupling to configuration channel pins of a universal serial bus (USB) type-C cable, and generating a compensation reference voltage, receiving a response signal through the configuration channel pins, and generating a response voltage corresponding to the response signal when an electronic device coupled to the USB type-C cable generates the response signal corresponding to a biphase mark coding (BMC) signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the USB type-C cable, and the biphase mark coding signal and the response signal are clock signals; and

a comparator coupled to the voltage compensation circuit for generating a comparison signal according to the response voltage and the compensation reference voltage, wherein the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery (USB-PD) after the comparator generates the comparison signal.

2. The power delivery controller of claim 1, wherein the power delivery controller generates the biphase mark coding signal and utilizes the biphase mark coding signal to communicate with the electronic device, and the power delivery controller and a primary controller applied to a primary side of the power converter make the power converter transmit power to the electronic device according to the specification corresponding to the universal serial bus power delivery after the comparator generates the comparison signal.

3. The power delivery controller of claim 2, wherein when the power converter transmits power to the electronic device according to the specification corresponding to the universal serial bus power delivery, a current and a voltage corresponding to the specification of the universal serial bus power delivery transmitted to the electronic device by the power converter meet a specification of the electronic device.

4. The power delivery controller of claim 1, wherein the power delivery controller is applied to a secondary side of the power converter.

5. A power delivery controller applied to a power converter, comprising:

a voltage compensation circuit for coupling to configuration channel pins of a universal serial bus (USB) type-C cable, and generating a compensation reference voltage, receiving a response signal through the configuration channel pins, and generating a response voltage corresponding to the response signal when an electronic device coupled to the USB type-C cable generates the response signal corresponding to a biphase mark coding (BMC) signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the USB type-C cable, the compensation reference voltage is determined by a reference voltage, a resistor, and a current, the response voltage is determined by the response signal, and the current corresponds to an output current of a secondary side of the power converter; and

a comparator coupled to the voltage compensation circuit for generating a comparison signal according to the response voltage and the compensation reference voltage, wherein the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery (USB-PD) after the comparator generates the comparison signal.

6. A power delivery controller applied to a power converter, comprising:

a voltage compensation circuit for coupling to configuration channel pins of a universal serial bus (USB) type-C cable, and generating a compensation reference voltage, receiving a response signal through the configuration channel pins, and generating a response voltage corresponding to the response signal when an electronic device coupled to the USB type-C cable generates the response signal corresponding to a biphase mark coding (BMC) signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the USB type-C cable; and

a comparator coupled to the voltage compensation circuit for generating a comparison signal according to the response voltage and the compensation reference voltage, wherein the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery (USB-PD) after the comparator generates the comparison signal, and the comparator is a hysteresis comparator.

7. An operation method of a power delivery controller applied to a power converter, wherein the power delivery controller comprises a voltage compensation circuit and a comparator, the operation method comprising:

the power delivery controller generating a biphase mark coding signal and utilizing the biphase mark coding signal to communicate with the electronic device when the power converter and an electronic device are coupled to two opposite sides of a USB type-C cable, wherein the biphase mark coding signal is transmitted to the electronic device through the USB type-C cable;

the voltage compensation circuit generating a compensation reference voltage, receiving a response signal through the USB type-C cable, and generating a response voltage corresponding to the response signal after the electronic device generates the response signal corresponding to the biphase mark coding signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the USB type-C cable, and the biphase mark coding signal and the response signal are clock signals; and

the comparator generating a comparison signal according to the response voltage and the compensation reference voltage, wherein after the comparator generates the comparison signal, the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery.

8. The operation method of claim 7, wherein the power delivery controller and a primary controller applied to a primary side of the power converter make the power converter transmit power to the electronic device according to the specification corresponding to the universal serial bus power delivery after the comparator generates the comparison signal.

9. The operation method of claim 8, wherein when the power converter transmits power to the electronic device according to the specification corresponding to the universal serial bus power delivery, a current and a voltage corresponding to the specification of the universal serial bus power delivery transmitted to the electronic device by the power converter meet a specification of the electronic device.

10. The operation method of claim 7, wherein the power delivery controller is applied to a secondary side of the power converter.

11. An operation method of a power delivery controller applied to a power converter, wherein the power delivery controller comprises a voltage compensation circuit and a comparator, the operation method comprising:

the power delivery controller generating a biphase mark coding signal and utilizing the biphase mark coding signal to communicate with the electronic device when the power converter and an electronic device are coupled to two opposite sides of a USB type-C cable, wherein the biphase mark coding signal is transmitted to the electronic device through the USB type-C cable;

the voltage compensation circuit generating a compensation reference voltage, receiving a response signal through the USB type-C cable, and generating a response voltage corresponding to the response signal after the electronic device generates the response signal corresponding to the biphase mark coding signal, wherein the response voltage and the compensation reference voltage have information relative to an internal resistor of the USB type-C cable, the compensation reference voltage is determined by a reference voltage, a resistor, and a current, the response voltage is determined by the response signal, and the current corresponds to an output current of a secondary side of the power converter; and

the comparator generating a comparison signal according to the response voltage and the compensation reference voltage, wherein after the comparator generates the comparison signal, the power converter transmits power to the electronic device according to a specification corresponding to universal serial bus power delivery.