CN113472043A

CN113472043A - double-Type-C port shared charging power charger and intelligent output power distribution method thereof

Info

Publication number: CN113472043A
Application number: CN202110758455.XA
Authority: CN
Inventors: 崔治学; 胡玲; 华敏; 王黎敏; 何伟
Original assignee: Keboda Technology Co ltd
Current assignee: Keboda Technology Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-10-01

Abstract

The double-Type-C port shared charging power charger comprises a main controller, a first path of charging circuit and a second path of charging circuit, wherein the first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B. The main controller is respectively connected with the PD controller A and the PD controller B in a communication way. The invention can fully utilize the total charging power provided by the charger and provide high-efficiency and quick charging for two paths of equipment to be charged.

Description

double-Type-C port shared charging power charger and intelligent output power distribution method thereof

Technical Field

The invention relates to a USB interface charging technology.

Background

The vehicle-mounted multi-Type-C-port charger is a charger capable of providing a plurality of Type-C interfaces simultaneously and is used for providing charging for a plurality of devices simultaneously. At present, a plurality of vehicle-mounted Type-C port chargers are mainly divided into two types:

1) a full-power charger: the sum of the maximum power provided by each Type-C interface is equal to the total power provided by the charger;

2) sharing the charging power charger: the sum of the maximum power provided by each Type-C interface is less than the total power provided by the charger.

The existing general technical scheme for realizing the sharing of the charging power charger by the double Type-C ports comprises the following 2 types:

1) different priorities of different Type-C ports are set by default

For example: the double-Type-C port shared charging power charger is provided with a Type-C interface A and a Type-C interface B (hereinafter referred to as an A port and a B port), and the priority of the A port is greater than that of the B port. When only the A port or the B port is connected with the device alone to provide charging, the set maximum output power can be provided. When the A port is connected with the equipment, the A port can provide the maximum output power, and the B port is limited to provide the output power, which is not limited by the access sequence of the connection of the A port and the equipment of the B port.

2) Default setting of same priority of double Type-C ports

For example: the priority of the port A of the double Type-port C sharing charging power charger is the same as that of the port B. When only the A port or the B port is connected with the device alone to provide charging, the set maximum output power can be provided. When the port A and the port B are connected with the equipment at the same time (without the sequence of access), the port A and the port B can only provide the same low output power, and the sum of the low output power and the low output power is not more than the total power provided by the charger.

The following describes the implementation and disadvantages of the above two prior art solutions by using a PD controller chip of MPS corporation (american core source systems limited), a shared charging power charger capable of providing 60W total power and 45W output power for any Type-C port:

fig. 1 shows a schematic block diagram of a conventional dual Type-C port shared charging power charger. The double-Type-C port shared charging power charger is provided with a Type-C interface A, a Type-C interface B (hereinafter referred to as an A port and a B port), a PD controller A and a PD controller B, wherein the PD controller A and the PD controller B are respectively in one-to-one correspondence with the A port and the B port, each PD controller adopts an MPQ-4242 chip manufactured by MPS company, and the PD controller broadcasts outputable power information of a PD protocol through a CC signal line in the Type-C interface. Each PD controller has a GPO pin Attach as an output for indicating whether a Type-C interface corresponding to the PD controller has a device access, and has a GPI pin Power share as an input for receiving an external signal (i.e., a signal output from the GPO pin Attach of another PD controller) to determine whether the Type-C interface corresponding to the PD controller needs to change the outputable Power.

When no device is connected to both ports a and B, the two PD controllers prepare broadcast information with the maximum available output Power of 45W, that is, the PDO (Power Data Object, Data information for the charger side to provide the available output Power and Data information for the charging Power requested by the device side) lists of ports a and B are the same, as shown in table 1 below:

table 1 initial PDO list

PDO	A port	B port
			PDO1	5V/3A	5V/3A
PDO2	9V/3A	9V/3A
			PDO3	15V/3A	15V/3A
PDO4	20V/2.25A	20V/2.25A

For the currently general technical scheme 1), different priorities of different Type-C ports are set by default.

Because the port A always has the highest priority, when the port A is connected with the equipment, the port B is limited to output power of 15W at the maximum no matter whether the port B has equipment access or not. The PDO lists for port a and port B are updated as shown in table 2 below:

table 2 scenario 1) PDO update list

PDO	A port	B port
			PDO1	5V/3A	5V/3A
PDO2	9V/3A	9V/1.6A
			PDO3	15V/3A	15V/1A
PDO4	20V/2.25A	20V/0.75A

Scheme 1) because the priority of the port a is set to be higher, the device can support all PDO options for high-power charging, and when the device connected to the port a only requires to use low-power PDO for charging, the situation that the total power provided by the charger is wasted is generated, so that the device requiring high-power charging on the port B cannot realize quick charging.

For example, when a B-port is used alone to connect a mobile phone device (for example, a common mobile phone supporting 18W charging) to charge the mobile phone device, the mobile phone device selects and requests PDO2 (9V/3A) from the PDO list, so that the charger provides 9V at the B-port and charges with about 2A current, and the maximum power of the mobile phone device can reach 18W. The port a is then used to connect to a handset device (also commonly used to support 18W charging handsets for example), which selects and requests PDO2 (9V/3A) from the PDO list, so that the charger provides 9V output and charges with about 2A current, which can reach 18W. However, at this time, the PDO list of the port B is updated and then broadcasted to the mobile phone device again, so that the mobile phone device connected to the port B can only ask for the updated PDO2 (9V/1.6A) for charging, the charging power is reduced from 18W to a maximum value of not more than 15W, the total power consumed by the charger is not more than 33W, and the total power of 60W is far not fully utilized.

For the currently common design 2), the same priority for the dual Type-C ports is set by default.

When the ports A and B have connection devices at the same time (without the sequence of access), the ports A and B are limited to output power of 30W at most. The PDO lists for port a and port B are updated as shown in table 3 below:

table 3, scheme 2) PDO update list (18W mobile phone)

PDO	A port	B port
			PDO1	5V/3A	5V/3A
PDO2	9V/3A	9V/3A
			PDO3	15V/2A	15V/2A
PDO4	20V/1.5A	20V/1.5A

In the scheme 2), because the same priority is set, when the port a and the port B are connected with the device at the same time, compared with the scheme 1), the charging requirement of a common mobile phone which is accessed and supports 18W charging at the same time can be met. But also the requirement that any port can not provide the maximum output power of 45W when the two ports are connected simultaneously is caused, so that the equipment (such as a notebook computer) needing high-power charging can not realize quick charging.

For example, when the port B is used alone to connect to a notebook computer device to charge the notebook computer device, the notebook computer device will select and ask for PDO4 (20V/2.25A) from the PDO list, so that the charger provides 20V at the port B and charges with a current of about 2A, and the power of the charger can reach 45W at maximum. The a port is then used to connect to a handset device (for example, a common 18W charging-enabled handset), which selects and requests PDO2 (9V/3A) from the updated PDO list, so that the charger provides 9V output and charges with about 2A current, which is no more than 18W. At this time, the PDO list of port B is updated and then broadcasted to the notebook computer again, so that the notebook computer can only charge the updated PDO4 (20V/1.5A), and the power of the PDO is not more than 30W. The charger consumes no more than 48W in total, making far less use of the total power of 60W.

Disclosure of Invention

The invention aims to solve the technical problem of providing a double-Type-C port shared charging power charger and an intelligent output power distribution method thereof, which can fully utilize the total charging power provided by the charger and provide efficient and rapid charging for two paths of equipment to be charged on the premise of meeting the specification of a Type-C connector.

According to the intelligent output power distribution method of the double Type-C port shared charging power charger, the double Type-C port shared charging power charger comprises a first path of charging circuit and a second path of charging circuit, wherein the first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B; the intelligent distribution method for the output power of the double-Type-C port shared charging power charger is characterized by comprising the following steps of: the PD controller of one charging circuit informs the main controller to update the PDO list; after receiving the notification, the main controller acquires the PDO option used by one of the charging circuits from the PD controller of the one of the charging circuits, and calculates an occupied power P1 of the one of the charging circuits according to the PDO option; the main controller calculates the maximum available output power P2 of the charging circuit in the rest path according to the preset charging total power P, wherein P2= P-P1; the main controller controls the PD controller A and the PD controller B to update the PDO list, one path of PDO options currently adopted by the charging circuit is reserved in the updated PDO list, and the occupied power corresponding to each PDO option of the rest paths of charging circuits does not exceed P2, so that the equipment to be charged connected to one path of charging circuit can still be charged according to the currently adopted PDO options when the other path of charging circuit is also connected with the equipment to be charged.

The charger comprises a first path of charging circuit and a second path of charging circuit, wherein the first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B; the dual-Type-C-port charger is characterized by further comprising a main controller, wherein the main controller is in communication connection with the PD controller A and the PD controller B respectively; the main controller is used for acquiring PDO options adopted by one charging circuit from the PD controller of the one charging circuit when receiving a notification of updating the PDO list from the one charging circuit, calculating the maximum available output power P2 of the remaining one charging circuit according to the PDO options and the preset charging total power P, controlling the PD controller A and the PD controller B to update the PDO list, and keeping the PDO options currently adopted by the one charging circuit in the updated PDO list, wherein the occupied power corresponding to the PDO options of the remaining one charging circuit does not exceed P2, so that the equipment to be charged connected to the one charging circuit can still be charged according to the currently adopted PDO options when the other charging circuit is also connected with the equipment to be charged.

The invention has at least the following advantages and characteristics:

according to the embodiment of the invention, the charging behavior guiding principle of the multi-port shared charging power charger in the specification requirement of the Type-C connector is adopted, the unoccupied maximum available output power in the shared charging power charger is calculated for each Type-C interface in real time, and the intelligent distribution function of the output power is realized. There is not fixed priority order between the Type-C interface of this embodiment, and it adopts the theory that the person of inserting has higher priority earlier, through host system and the real-time communication of multichannel PD controller that have computing power, acquires its operating condition and controls it, can fully utilize the total power of charging that the charger can provide, and then thoroughly solved the drawback in two kinds of general technical schemes of present two types of Type-C mouth sharing charging power chargers, treat the charging equipment for two ways and provide more high-efficient quick charging.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic block diagram of a conventional dual Type-C port shared charging power charger.

Fig. 2 illustrates a functional block diagram of a dual Type-C port shared charging power charger according to an embodiment of the present invention.

Fig. 3 is a flowchart illustrating an embodiment of an intelligent output power distribution method for a dual Type-C port shared charging power charger according to the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Fig. 2 illustrates a functional block diagram of a dual Type-C port shared charging power charger according to an embodiment of the present invention. Referring to fig. 2, the apparatus according to an embodiment of the present invention includes a main controller, a first path charging circuit and a second path charging circuit.

The first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B. The main controller, the PD controller A and the PD controller B are connected in communication.

In the present embodiment, both the PD controller a and the PD controller B use a PD controller chip manufactured by MPS corporation and having a model number MPQ-4242.

In this embodiment, the main controller is an MCU. An interrupt request pin IRQ of the PD controller A and an interrupt request pin IRQ of the PD controller B are respectively and electrically connected with a first external interrupt pin and a second external interrupt pin of the MCU; and the MCU communicates with PD controller a and PD controller B via the I2C bus, respectively.

In the existing dual Type-C port shared charging power charger, an MCU chip is added to the dual Type-C port shared charging power charger of this embodiment, and the MCU chip is used as an I2C master device and can read and control the operating states of two PD controllers as I2C slave devices through an I2C communication link. Meanwhile, the two PD controllers are respectively provided with an interrupt pin IRQ as an output to be connected to the MCU chip, and when the PD controller and the equipment needing charging need to update the output power (or the requirements caused by a temperature control system and other factors) after PD protocol handshaking is carried out, the two PD controllers can inform the MCU to carry out real-time calculation and control of intelligent distribution of the output power through IRQ signals.

The intelligent output power distribution method of the double-Type-C port shared charging power charger provided by the embodiment of the invention comprises the following steps:

the PD controller of one charging circuit informs the main controller to update the PDO list;

after receiving the notification, the main controller acquires the PDO option used by one of the charging circuits from the PD controller of the one of the charging circuits, and calculates an occupied power P1 of the one of the charging circuits according to the PDO option;

the main controller calculates the maximum available output power P2 of the charging circuit in the rest path according to the preset charging total power P, wherein P2= P-P1;

the main controller controls the PD controller A and the PD controller B to update the PDO list, one path of PDO options currently adopted by the charging circuit is reserved in the updated PDO list, and the occupied power corresponding to each PDO option of the rest paths of charging circuits does not exceed P2, so that the equipment to be charged connected to one path of charging circuit can still be charged according to the currently adopted PDO options when the other path of charging circuit is also connected with the equipment to be charged.

Further, the step of the master controller controlling the PD controller a and the PD controller B to update the PDO list includes the following steps:

the main controller sends the calculated occupied power P1 to the PD controller of one charging circuit, and sends the calculated maximum available output power P2 to the PD controllers of the rest charging circuits;

the PD controller of one charging circuit modifies the maximum available current value of each PDO option of which the maximum available output power exceeds P1 in the original PDO list, the modified maximum available current value is I1 = P1/U1, and U1 is the output voltage value in the PDO option of the PD controller of one charging circuit; modifying the maximum available current value of each PDO option of which the maximum available output power exceeds P2 in the original PDO list by the PD controllers of the rest charging circuits, wherein the modified maximum available current value is I2 = P2/U2, and U2 is the output voltage value in the PDO options of the PD controllers of the rest charging circuits; the output voltage value of each PDO option in the updated PDO list of the PD controller a and the PD controller B is consistent with the original PDO list and remains unchanged, that is, in the updated PDO list, the output voltage value of the PDO option of each charging circuit is the same as the PDO list before updating, and only the output current allowed under the output voltage is changed. After the above operation, in the updated PDO list of the PD controller of one of the charging circuits, the maximum available output power corresponding to each PDO option does not exceed P1, and in the updated PDO list of the PD controllers of the remaining charging circuits, the maximum available output power corresponding to each PDO option does not exceed P2.

In this embodiment, the master controller is configured to send the calculated available output powers P1 and P2 to the two PD controllers, respectively, for updating the register values in which the PDO lists are stored, so that the updated available PDO lists are broadcast to the device to be charged by the PD controller a and the PD controller B. In a more specific application implementation, the MCU reads a register of PDO option information currently used by a PD controller of one of the charging circuits through an I2C communication interface, obtains a voltage and a current corresponding to a current PDO option, multiplies the voltage and the current to calculate an occupied power P1 of one of the charging circuits, calculates P2, and writes P1 and P2 into registers of two PD controllers respectively, which store a maximum power to be output, and the PD controllers of the remaining charging circuits automatically calculate, according to the P2, maximum current values available at different output voltages in different PDO options, update the maximum current values into the registers storing PDO information, and then use the updated PDO information to communicate with a device to be charged and perform handshake confirmation of charging power. The PDO list is self-calculated and updated by the PD controller based on the maximum power allowed for writing.

Further, the PD controller of one of the charging circuits notifies the main controller to update the PDO list after the PD controller completes handshake communication of the PD protocol with the device to be charged.

Further, the PD controller of one of the charging circuits notifies the host controller to update the PDO list in a manner of sending an interrupt request signal to the host controller.

The implementation and improvement point of the embodiment of the present invention will be further described below by taking a charger product that can provide 60W total power by sharing a charging power charger and 45W output power by any Type-C interface as an example, where the Type-C interface a and the Type-C interface B are hereinafter referred to as the a port and the B port, respectively.

When neither port a nor port B is connected to a device, neither PD controller is limited by the MCU, and the default will be to prepare broadcast information with the maximum available output power of 45W, i.e. the PDO lists for port a and port B are the same and are shown in table 1.

Compared with the general technical scheme 1) for realizing the double Type-C port shared charging power charger described in the background technology section, the following advantages are brought by adopting the embodiment of the invention:

for example, when a B-port is used alone to connect a mobile phone device (for example, a common mobile phone supporting 18W charging) to charge the mobile phone device, the mobile phone device selects and requests PDO2 (9V/3A) from the PDO list, so that the charger provides 9V at the B-port and charges with about 2A current, and the maximum power of the mobile phone device can reach 18W. Once the PD protocol handshake is successful, the PD controller in the path of the port B notifies the MCU to enter a corresponding calculation program through its IRQ pin. The MCU first obtains 27W (9V/3A) occupied by PDO2 option currently used by port B through I2C (note that the Type-C connector specification requires that the maximum voltage of PDO option determined by protocol handshaking between the charger and the device to be charged should be used is multiplied by the maximum current, instead of the current actually used by the device), and then calculates the maximum available output power of port a to be 33W by subtracting 27W from the total power of the charger 60W, so that the MCU controls the two-way PD controller through I2C to update the PDO option list of port a and port B as shown in table 4:

table 4 new scheme PDO update list (18W mobile phone +18W mobile phone)

PDO	A port	B port
			PDO1	5V/3A	5V/3A
PDO2	9V/3A	9V/3A
			PDO3	15V/2.2A	15V/1.8A
PDO4	20V/1.65A	20V/1.35

As can be seen from tables 1 and 4, the PDO3 and PDO4 have the maximum available output power exceeding 27W in the original PDO list of the PD controller B, and the maximum available current values of PDO3 and PDO4 in the PDO list updated by the PD controller B are respectively modified to 1.8A and 1.35A; the maximum available output power of the original PDO list of the PD controller A is PDO3 and PDO4 which exceeds 33W, and the maximum available current values of PDO3 and PDO4 in the PDO list after the PD controller A is updated are respectively modified into 2.2A and 1.65A.

At this time, the port a is used to connect the mobile phone device (also taking a common mobile phone supporting 18W charging as an example), PDO2 (9V/3A) can be normally requested, so that the charger provides 9V output and charges with about 2A current, and the power of the charger can reach 18W at most. And the mobile phone device connected with the port B can also continuously ask for PDO2 (9V/3A) to be charged with the maximum power of 18W, and both the mobile phone devices can ask for the maximum power of 18W required by themselves. In table 4, the occupied powers corresponding to the PDO3 and PDO4 options of the a port are both equal to 33W, that is, equal to the maximum available output power P2 of the charging circuit in the a port.

Compared with the general technical scheme 2) for realizing the double Type-C port shared charging power charger described in the background technology section, the following advantages are brought by adopting the embodiment of the invention:

for example, when the port B is used alone to connect to a notebook computer device to charge the notebook computer device, the notebook computer device will select and ask for PDO4 (20V/2.25A) in the PDO list, so that the charger provides 20V at the port B and charges with a current of about 2A, and the power can reach 45W at most. Once the PD protocol handshake is successful, the PD controller in the path of the port B notifies the MCU to enter a corresponding calculation program through its IRQ pin. Firstly, the power 45W (20V/2.25A) occupied by the PDO4 option currently used by the port B is acquired through I2C, and then the maximum available output power of the port a is calculated by subtracting 45W from the total power 60W of the charger, so that on this basis, the MCU controls the two PD controllers through I2C to update the PDO option lists of the port a and the port B as shown in table 5:

TABLE 5 New scheme PDO update List (18W mobile +45W notebook)

PDO	A port	B port
			PDO1	5V/3A	5V/3A
PDO2	9V/1.66A	9V/3A
			PDO3	15V/1A	15V/3A
PDO4	20V/0.75A	20V/2.25A

As can be seen from tables 1 and 5, the number of PDO options with the maximum available output power exceeding 45W in the original PDO list of the PD controller B is 0, so that the PDO list does not need to be modified, that is, the updated PDO list is the same as the original PDO list; the maximum available output power of the original PDO list of the PD controller a exceeding 15W is PDO2, PDO3 and PDO4, and the maximum available current values of PDO2, PDO3 and PDO4 of the PDO list after the PD controller a is updated are modified to 1.66A, 1A and 0.75A, respectively.

The a port is then used to connect to a handset device (for example, a common 18W charging-enabled handset), which selects and requests PDO2 (9V/1.66A) from the updated PDO list, so that the charger provides 9V output and charges with a current no higher than about 1.66A, and the power is no greater than 15W. And the notebook computer connected with the port B can continuously ask for PDO4 (20V/2.25A) to be charged with the maximum power of 45W, so that the requirement that the prior accessed port has more sufficient priority required by the Type-C connector specification is met. In table 5, the occupied powers corresponding to the PDO1, PDO3, and PDO4 options of the a port are all equal to 15W, that is, equal to the maximum available output power P2 of the charging circuit in which the a port is located.

In order to fully utilize the total power available from the shared charging power charger, the USB association specifically specifies, in the specification requirement of the Type-C connector, that the shared charging power charger has the function of intelligently distributing the output power so as to achieve the highest possible total power of the available charger. According to the embodiment of the invention, the charger can provide real-time calculation and dynamic intelligent distribution of the total power between double Type-C ports according to the charging behavior guiding principle of the multi-port shared charging power charger in the specification requirement of the Type-C connector, and the specification requirement of the Type-C connector is completely met.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The intelligent output power distribution method of the double Type-C port shared charging power charger comprises a first path of charging circuit and a second path of charging circuit, wherein the first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B; the intelligent output power distribution method of the double Type-C port shared charging power charger is characterized by comprising the following steps of:

2. The intelligent output power distribution method of a dual Type-C port shared charging power charger according to claim 1, wherein the PD controller of one charging circuit notifies the main controller to update the PDO list after completing the handshake communication of the PD protocol with the device to be charged.

3. The intelligent output power distribution method of a dual Type-C port shared charging power charger according to claim 1, wherein a PD controller of one charging circuit notifies the main controller to update a PDO list in a manner of sending an interrupt request signal to the main controller.

4. The intelligent output power distribution method of a dual Type-C port shared charging power charger according to claim 1, wherein the main controller controls the PD controller a and the PD controller B to update the PDO list by means of bus communication.

5. The intelligent output power distribution method of a dual Type-C port shared charging power charger according to claim 1, wherein the main controller controlling the PD controller a and the PD controller B to update the PDO list comprises the steps of:

the PD controller of one charging circuit modifies the maximum available current value of each PDO option of which the maximum available output power exceeds P1 in the original PDO list, the modified maximum available current value is I1 = P1/U1, and U1 is the output voltage value in the PDO option of the PD controller of one charging circuit; modifying the maximum available current value of each PDO option of which the maximum available output power exceeds P2 in the original PDO list by the PD controllers of the rest charging circuits, wherein the modified maximum available current value is I2 = P2/U2, and U2 is the output voltage value in the PDO options of the PD controllers of the rest charging circuits; the output voltage value in each PDO option in the updated PDO lists of the PD controller A and the PD controller B is consistent with the original PDO list.

6. The intelligent output power distribution method of a double Type-C port shared charging power charger according to any one of claims 1 to 5, wherein the main controller is an MCU.

7. A double Type-C port shared charging power charger comprises a first path of charging circuit and a second path of charging circuit, wherein the first path of charging circuit comprises a Type-C interface A and a PD controller A electrically connected with the Type-C interface A, and the second path of charging circuit comprises a Type-C interface B and a PD controller B electrically connected with the Type-C interface B; the charger is characterized in that the double-Type-C port charger further comprises a main controller which is in communication connection with the PD controller A and the PD controller B respectively;

the main controller is used for acquiring PDO options adopted by one charging circuit from the PD controller of the one charging circuit when receiving a notification of updating the PDO list from the one charging circuit, calculating the maximum available output power P2 of the remaining one charging circuit according to the PDO options and the preset charging total power P, controlling the PD controller A and the PD controller B to update the PDO list, and keeping the PDO options currently adopted by the one charging circuit in the updated PDO list, wherein the occupied power corresponding to each PDO option of the remaining one charging circuit does not exceed P2, so that the equipment to be charged connected to the one charging circuit can still be charged according to the currently adopted PDO options when the other charging circuit is also connected with the equipment to be charged.

8. The dual Type-C port shared charging power charger of claim 7, wherein the main controller is an MCU.

9. The dual Type-C port shared charging power charger of claim 8, wherein the interrupt request pin of the PD controller a and the interrupt request pin of the PD controller B are electrically connected with a first external interrupt pin and a second external interrupt pin of the MCU, respectively; and the PD controller A, the PD controller B and the MCU communicate through an I2C bus.

10. The dual Type-C port shared charging power charger of claim 7, wherein the PD controller a and the PD controller B both use model number MPQ-4242 PD controller chips manufactured by MPS corporation.