CN118282005A - Multi-port charging circuit module - Google Patents

The application discloses a multi-port charging circuit module which is used for reducing the cost of the multi-port charging circuit module under a PD3.1 protocol. The application comprises the following steps: the device comprises an input port, a linear straight-through conversion module, a voltage reduction module, an on-off module, a controller U2, a first output port and a second output port; the first end and the second end of the input port are connected with the capacitor C1 in parallel, and the second end of the input port is grounded; the input port is electrically coupled with the linear straight-through conversion module, the voltage reduction module and the on-off module respectively; the linear through conversion module is electrically coupled with the voltage reduction module, and has a linear working state and a through working state; the on-off module is respectively connected with the voltage reducing module, the first output port and the second output port, and the on-off module is connected with the on-off module through an MOS tube; the controller U2 is electrically coupled with the voltage reducing module and the on-off module respectively; the controller U2, the first output port, the second output port and the on-off module are all provided with grounding ends.

Multi-port charging circuit module

Technical Field

The embodiment of the application relates to the field of multi-port charging, in particular to a multi-port charging circuit module.

Background

The PD3.0 fast-fill protocol is still adopted by most of the Type-C interfaces at present, however, the USB Type-C cable and interface standard v2.1 version are now being proposed by the USB-IF Association, with sections on power supply capability updated. The USB PD3.1 specification assigns the original USB PD3.0 content to the standard power range (Standard Power Range, abbreviated as SPR), with the maximum power remaining unchanged at 100W. And the extended power range (Extended Power Range, EPR for short) is increased, and the maximum power is extended from 100W to 240W. And the PD3.1 protocol expands the highest voltage of the charging port from 20V to 48V, increasing the design parameters of the 3C electronic product from low/medium voltage to medium/high voltage.

The conventional multi-port charging circuit module at least comprises an input port, a voltage reduction module, an on-off module, a controller U2, a first output port and a second output port. The input port is connected with the first output port and the second output port through the on-off module, and after the input port is connected with the voltage reducing module, the voltage reducing module is connected with the on-off module. The voltage reducing module and the on-off module are both connected with the controller U2, and the voltage V4 of the connection point between the voltage reducing module and the on-off module is monitored by the controller U2.

If the adaptor of the input port supports the PD3.1 protocol, that is, the adaptor 240W outputs 48V/5A at the highest, when the powered device of the first output port or the second output port is inserted, and the powered device is charged at high voltage of 48V, the controller U2 turns on the on-off module to switch the MOS transistor Q of the switch module. When the powered device requests 48V/5A gear, the controller U2 enables the adapter to output 48V/5A through the PD3.1 protocol, and the PD3.1 and 240W standard cable function is achieved. The voltage of the first end V1 of the input port and the voltage of the output port V2 are 48V, if the voltage of the fourth end between the on-off module and the pressurizing module is 5V, the differential pressure of 48V minus 5V equal to 43V is generated by the MOS tube of the detection module of the on-off module, if the forward conducting voltage of the body diode of the MOS tube is ignored, the 43V voltage is fully added between the DS poles of one of the MOS tubes of the detection module, and only MOS with at least 60V withstand voltage level can be selected in design, thus increasing cost. In addition, the input of the voltage reducing module can reach 48V, the components in the voltage reducing module need to be changed into 60V withstand voltage values, and the size and cost of the components are greatly increased.

Disclosure of Invention

The application discloses a multi-port charging circuit module which is used for reducing the cost of the multi-port charging circuit module under a PD3.1 protocol.

The application discloses a multi-port charging circuit module, which comprises:

the device comprises an input port, a linear straight-through conversion module, a voltage reduction module, an on-off module, a controller U2, a first output port and a second output port;

The first end and the second end of the input port are connected with the capacitor C1 in parallel, and the second end of the input port is grounded;

the input port is electrically coupled with the linear straight-through conversion module, the voltage reduction module and the on-off module respectively, and is used for connecting the adapter;

the linear through conversion module is electrically coupled with the voltage reduction module, and has a linear working state and a through working state;

The on-off module is respectively connected with the voltage reducing module, the first output port and the second output port are used for connecting power receiving equipment, and the on-off module comprises at least one switch module and at least one detection module, and the switch module and the detection module complete detection and switching through the MOS tube;

the controller U2 is electrically coupled with the voltage reducing module and the on-off module respectively;

the controller U2, the first output port, the second output port and the on-off module are all provided with grounding ends.

Optionally, the on-off module comprises a first switch module, a second switch module, a first detection module and a second detection module;

The first switch module and the second switch module are connected with the first end of the input port;

The first detection module and the second detection module are both connected with the second end input of the controller U2;

the first switch module and the first detection module are connected with a first end of a first output port, and a second end of the first output port is grounded;

the second switch module and the second detection module are both connected with the first end of the second output port, and the second end of the second output port is grounded;

the first output end of the controller U2 is connected with the second detection module;

the second output end of the controller U2 is connected with the first detection module;

The third output end of the controller U2 is connected with the second switch module;

The fourth output terminal of the controller U2 is connected to the first switch module.

Optionally, the linear through conversion module includes a resistor R1, a depletion P-channel MOS Q5, a diode D5, a capacitor C2, and a zener diode ZD;

the anode of the diode D5 is connected with the source electrode of the depletion type P-channel MOS transistor Q5;

the cathode of the diode D5 is connected with the drain electrode of the depletion type P-channel MOS transistor Q5;

The drain electrode of the depletion type P channel MOS tube Q5 is respectively connected with the first end of the input port and the first end of the resistor R1;

The source electrode of the depletion type P channel MOS transistor Q5 is respectively connected with the first end of the capacitor C2 and the voltage reduction module;

the grid electrode of the depletion type P channel MOS tube Q5 is respectively connected with the second end of the resistor R1 and the cathode of the zener diode ZD;

The second end of the capacitor C2 is commonly grounded with the second end of the input port;

the positive pole of the zener diode ZD is commonly grounded with the second end of the input port.

Optionally, the step-down module includes a DC-DC IC U1 module, an inductor L1, and a capacitor C3;

The first end of the DC-DC IC U1 module is connected with the source electrode of the depletion type P-channel MOS tube Q5;

the second end of the DC-DC IC U1 module is connected with the first input end of the controller U2;

The third end of the DC-DC IC U1 module and the second end of the input port are commonly grounded;

The second end of the capacitor C2 is commonly grounded with the second end of the input port;

the fourth end of the DC-DC IC U1 module is connected with the first end of the inductor L1;

The second end of the inductor L1 is respectively connected with the first end of the capacitor C2, the second input end of the controller U2 and the on-off module.

Optionally, the first switch module includes a depletion type N-channel MOS transistor Q1, a diode D1, and a resistor R2;

The anode of the diode D1 is connected with the source electrode of the depletion type N-channel MOS transistor Q1;

the cathode of the diode D1 is connected with the drain electrode of the depletion type N-channel MOS transistor Q1;

The drain electrode of the depletion type N-channel MOS tube Q1 is respectively connected with the first end of the resistor R2 and the first end of the input port;

the grid electrode of the depletion type N-channel MOS tube Q1 is connected with the fourth output end of the controller U2;

the second end of the resistor R2 is connected with the fourth output end of the controller U2;

the source electrode of the depletion type N-channel MOS tube Q1 is respectively connected with the first detection module and the first end of the first output port.

Optionally, the first detection module comprises a depletion type N-channel MOS transistor Q3-1, a depletion type N-channel MOS transistor Q3-2, a diode D3-1, a diode D3-2 and a resistor R4;

The anode of the diode D3-1 is connected with the source electrode of the depletion type N-channel MOS tube Q3-1;

the cathode of the diode D3-1 is connected with the drain electrode of the depletion type N-channel MOS tube Q3-1;

the anode of the diode D3-2 is connected with the source electrode of the depletion type N-channel MOS tube Q3-2;

the cathode of the diode D3-2 is connected with the drain electrode of the depletion type N-channel MOS transistor Q3-2;

the source electrode of the depletion type N-channel MOS tube Q3-1 is respectively connected with the second end of the controller U2 and the second end of the inductor L1;

The first end of the resistor R4 is connected with the drain electrode of the depletion type N-channel MOS tube Q3-1 and the drain electrode of the depletion type N-channel MOS tube Q3-2 respectively;

the source electrode of the depletion type N-channel MOS tube Q3-2 is respectively connected with the source electrode of the depletion type N-channel MOS tube Q1 and the first end of the first output port;

The second output end of the controller U2 is respectively connected with the second end of the resistor R4, the grid electrode of the depletion type N-channel MOS tube Q3-1 and the grid electrode of the depletion type N-channel MOS tube Q3-2.

Optionally, the second switch module includes a depletion type N-channel MOS transistor Q2, a diode D2, and a resistor R3;

the anode of the diode D2 is connected with the source electrode of the depletion type N-channel MOS transistor Q2;

the cathode of the diode D2 is connected with the drain electrode of the depletion type N-channel MOS transistor Q2;

the drain electrode of the depletion type N-channel MOS tube Q2 is respectively connected with the first end of the resistor R3 and the first end of the input port;

the grid electrode of the depletion type N-channel MOS tube Q2 is connected with the third output end of the controller U2;

The second end of the resistor R3 is connected with the third output end of the controller U2;

The source electrode of the depletion type N-channel MOS tube Q2 is respectively connected with the second detection module and the first end of the second output port.

Optionally, the second detection module comprises a depletion type N-channel MOS transistor Q4-1, a depletion type N-channel MOS transistor Q4-2, a diode D4-1, a diode D4-2 and a resistor R5;

The anode of the diode D4-1 is connected with the source electrode of the depletion type N-channel MOS tube Q4-1;

the cathode of the diode D4-1 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-1;

The positive electrode of the diode D4-2 is connected with the source electrode of the depletion type N-channel MOS tube Q4-2;

The cathode of the diode D4-2 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-2;

The source electrode of the depletion type N-channel MOS tube Q4-1 is respectively connected with the second end of the controller U2 and the second end of the inductor L1;

The first end of the resistor R5 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-1 and the drain electrode of the depletion type N-channel MOS tube Q4-2 respectively;

the source electrode of the depletion type N-channel MOS tube Q4-2 is respectively connected with the source electrode of the depletion type N-channel MOS tube Q2 and the first end of the second output port;

the first output end of the controller U2 is respectively connected with the second end of the resistor R5, the grid electrode of the depletion type N-channel MOS tube Q4-1 and the grid electrode of the depletion type N-channel MOS tube Q4-2.

Optionally, the input port is a Type-C power input.

Optionally, the first output port and the second output port are Type-C output ports.

From the above technical solutions, the embodiment of the present application has the following advantages:

The application discloses a multi-port charging circuit module, which specifically comprises an input port, a linear direct-connection conversion module, a voltage reduction module, an on-off module, a controller U2, a first output port and a second output port. The connection mode of each component is as follows: the first and second ends of the input port are connected in parallel with the capacitor C1, and the second end of the input port is grounded. The input port is electrically coupled with the linear straight-through conversion module, the voltage reduction module and the on-off module respectively, and is used for being connected with the adapter. The linear through conversion module is electrically coupled with the voltage reduction module, and has a linear working state and a through working state. The on-off module is connected with the voltage reducing module, the first output port and the second output port respectively, the first output port and the second output port are used for being connected with power receiving equipment, the on-off module comprises at least one switch module and at least one detection module, and the switch module and the detection module finish detection and switch through the MOS tube. The controller U2 is electrically coupled with the voltage dropping module and the on-off module respectively. The controller U2, the first output port, the second output port and the on-off module are all provided with grounding ends.

When the input port is connected to the adapter and the output port is connected to the power receiving equipment, the controller U2 controls the on-off module to charge the power receiving equipment, the power receiving equipment is in a low-voltage charging state at the moment, the linear through conversion module is in a through working state, and the voltage reducing module and the on-off module are not affected by high voltage at the moment. When the powered equipment requests to use high-voltage charging, the linear through conversion module enters a linear working state, the higher the grid voltage of the MOS tube in the linear through conversion module is, the current flowing through the MOS tube is reduced, the voltage between the linear through conversion module and the decompression module is reduced, the voltage reduction circuit can adjust the voltage again, the difference between the voltage V4 between the on-off module and the decompression module and the power receiving voltage of the output port of 48V is reduced, at the moment, at least 60V voltage-resistant MOS is not needed in the on-off module, only one level MOS tube is needed, and components in the decompression module are not needed to reach 60V voltage-resistant level, so that the volume and cost of circuit elements are greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an overall structure of a multi-port charging circuit module according to the present application;

fig. 2 is a schematic diagram of another overall structure of the multi-port charging circuit module according to the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in the present description and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In the prior art, a conventional multi-port charging circuit module at least comprises an input port, a step-down module, an on-off module, a controller U2, a first output port and a second output port. The input port is connected with the first output port and the second output port through the on-off module, and after the input port is connected with the voltage reducing module, the voltage reducing module is connected with the on-off module. The voltage reducing module and the on-off module are both connected with the controller U2, and the voltage V4 of the connection point between the voltage reducing module and the on-off module is monitored by the controller U2.

If the adaptor of the input port supports the PD3.1 protocol, that is, the adaptor 240W outputs 48V/5A at the highest, when the powered device of the first output port or the second output port is inserted, and the powered device is charged at high voltage of 48V, the controller U2 turns on the on-off module to switch the MOS transistor Q of the switch module. When the powered device requests 48V/5A gear, the controller U2 enables the adapter to output 48V/5A through the PD3.1 protocol, and the PD3.1 and 240W standard cable function is achieved. The voltage of the first end V1 of the input port and the voltage of the output port V2 are 48V, if the voltage of the fourth end between the on-off module and the pressurizing module is 5V, the differential pressure of 48V minus 5V equal to 43V is generated by the MOS tube of the detection module of the on-off module, if the forward conducting voltage of the body diode of the MOS tube is ignored, the 43V voltage is fully added between the DS poles of one of the MOS tubes of the detection module, and only MOS with at least 60V withstand voltage level can be selected in design, thus increasing cost. In addition, the input of the voltage reducing module can reach 48V, the components in the voltage reducing module need to be changed into 60V withstand voltage values, and the size and cost of the components are greatly increased.

Based on the above, the application discloses a multi-port charging circuit module which is used for reducing the cost of the multi-port charging circuit module under the PD3.1 protocol.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1 to 2, the present application provides an embodiment of a multi-port charging circuit module, which includes:

the device comprises an input port, a linear straight-through conversion module, a voltage reduction module, an on-off module, a controller U2, a first output port and a second output port;

The first end and the second end of the input port are connected with the capacitor C1 in parallel, and the second end of the input port is grounded;

the input port is electrically coupled with the linear straight-through conversion module, the voltage reduction module and the on-off module respectively, and is used for connecting the adapter;

the linear through conversion module is electrically coupled with the voltage reduction module, and has a linear working state and a through working state;

The on-off module is respectively connected with the voltage reducing module, the first output port and the second output port are used for connecting power receiving equipment, and the on-off module comprises at least one switch module and at least one detection module, and the switch module and the detection module complete detection and switching through the MOS tube;

the controller U2 is electrically coupled with the voltage reducing module and the on-off module respectively;

the controller U2, the first output port, the second output port and the on-off module are all provided with grounding ends.

The input port is used for accessing the corresponding power supply device, in this embodiment, mainly the connection adapter, and the adapter satisfies the PD3.1 protocol.

The first and second ends of the input port are connected in parallel with a capacitor C1, which capacitor C1 acts as a filter to protect the components of the whole circuit.

The on-off module is acted by the controller U2, and a corresponding output port is opened for the powered device, so that the on-off module can input the electric energy of the input port into the powered device. And the voltage V4 between the on-off device and the voltage reducing device is monitored by the controller U2, so that components in the voltage reducing module are controlled to operate.

The linear through conversion module circuit enters a linear working state when the voltage of the input port exceeds the withstand voltage of the voltage reduction module circuit, and enters a through working state when the voltage of the input port is lower than the withstand voltage of the voltage reduction module circuit.

The voltage reducing circuit performs voltage conversion on the output voltage of the linear through conversion module to obtain a voltage V4, and the voltage difference between two ends of the on-off module is controlled.

The controller U2 supplies power to the power receiving equipment connected with the first output port and the second output port through the MOS tube of the control on-off module.

When the input port is connected to the adapter and the output port is connected to the power receiving equipment, the controller U2 controls the on-off module to charge the power receiving equipment, the power receiving equipment is in a low-voltage charging state at the moment, the linear through conversion module is in a through working state, and the voltage reducing module and the on-off module are not affected by high voltage at the moment. When the powered equipment requests to use high-voltage charging, the linear through conversion module enters a linear working state, the higher the grid voltage of the MOS tube in the linear through conversion module is, the current flowing through the MOS tube is reduced, the voltage between the linear through conversion module and the decompression module is reduced, the voltage reduction circuit can adjust the voltage again, the difference between the voltage V4 between the on-off module and the decompression module and the power receiving voltage of the output port of 48V is reduced, at the moment, at least 60V voltage-resistant MOS is not needed in the on-off module, only one level MOS tube is needed, and components in the decompression module are not needed to reach 60V voltage-resistant level, so that the volume and cost of circuit elements are greatly reduced.

Optionally, the on-off module comprises a first switch module, a second switch module, a first detection module and a second detection module;

The first switch module and the second switch module are connected with the first end of the input port;

The first detection module and the second detection module are both connected with the second end input of the controller U2;

the first switch module and the first detection module are connected with a first end of a first output port, and a second end of the first output port is grounded;

the second switch module and the second detection module are both connected with the first end of the second output port, and the second end of the second output port is grounded;

the first output end of the controller U2 is connected with the second detection module;

the second output end of the controller U2 is connected with the first detection module;

The third output end of the controller U2 is connected with the second switch module;

The fourth output terminal of the controller U2 is connected to the first switch module.

Optionally, the linear through conversion module includes a resistor R1, a depletion P-channel MOS Q5, a diode D5, a capacitor C2, and a zener diode ZD;

the anode of the diode D5 is connected with the source electrode of the depletion type P-channel MOS transistor Q5;

the cathode of the diode D5 is connected with the drain electrode of the depletion type P-channel MOS transistor Q5;

The drain electrode of the depletion type P channel MOS tube Q5 is respectively connected with the first end of the input port and the first end of the resistor R1;

The source electrode of the depletion type P channel MOS transistor Q5 is respectively connected with the first end of the capacitor C2 and the voltage reduction module;

the grid electrode of the depletion type P channel MOS tube Q5 is respectively connected with the second end of the resistor R1 and the cathode of the zener diode ZD;

The second end of the capacitor C2 is commonly grounded with the second end of the input port;

the positive pole of the zener diode ZD is commonly grounded with the second end of the input port.

Optionally, the step-down module includes a DC-DC IC U1 module, an inductor L1, and a capacitor C3;

The first end of the DC-DC IC U1 module is connected with the source electrode of the depletion type P-channel MOS tube Q5;

the second end of the DC-DC IC U1 module is connected with the first input end of the controller U2;

The third end of the DC-DC IC U1 module and the second end of the input port are commonly grounded;

The second end of the capacitor C2 is commonly grounded with the second end of the input port;

the fourth end of the DC-DC IC U1 module is connected with the first end of the inductor L1;

The second end of the inductor L1 is respectively connected with the first end of the capacitor C2, the second input end of the controller U2 and the on-off module.

Optionally, the first switch module includes a depletion type N-channel MOS transistor Q1, a diode D1, and a resistor R2;

The anode of the diode D1 is connected with the source electrode of the depletion type N-channel MOS transistor Q1;

the cathode of the diode D1 is connected with the drain electrode of the depletion type N-channel MOS transistor Q1;

The drain electrode of the depletion type N-channel MOS tube Q1 is respectively connected with the first end of the resistor R2 and the first end of the input port;

the grid electrode of the depletion type N-channel MOS tube Q1 is connected with the fourth output end of the controller U2;

the second end of the resistor R2 is connected with the fourth output end of the controller U2;

the source electrode of the depletion type N-channel MOS tube Q1 is respectively connected with the first detection module and the first end of the first output port.

Optionally, the first detection module comprises a depletion type N-channel MOS transistor Q3-1, a depletion type N-channel MOS transistor Q3-2, a diode D3-1, a diode D3-2 and a resistor R4;

The anode of the diode D3-1 is connected with the source electrode of the depletion type N-channel MOS tube Q3-1;

the cathode of the diode D3-1 is connected with the drain electrode of the depletion type N-channel MOS tube Q3-1;

the anode of the diode D3-2 is connected with the source electrode of the depletion type N-channel MOS tube Q3-2;

the cathode of the diode D3-2 is connected with the drain electrode of the depletion type N-channel MOS transistor Q3-2;

the source electrode of the depletion type N-channel MOS tube Q3-1 is respectively connected with the second end of the controller U2 and the second end of the inductor L1;

The first end of the resistor R4 is connected with the drain electrode of the depletion type N-channel MOS tube Q3-1 and the drain electrode of the depletion type N-channel MOS tube Q3-2 respectively;

the source electrode of the depletion type N-channel MOS tube Q3-2 is respectively connected with the source electrode of the depletion type N-channel MOS tube Q1 and the first end of the first output port;

The second output end of the controller U2 is respectively connected with the second end of the resistor R4, the grid electrode of the depletion type N-channel MOS tube Q3-1 and the grid electrode of the depletion type N-channel MOS tube Q3-2.

Optionally, the second switch module includes a depletion type N-channel MOS transistor Q2, a diode D2, and a resistor R3;

the anode of the diode D2 is connected with the source electrode of the depletion type N-channel MOS transistor Q2;

the cathode of the diode D2 is connected with the drain electrode of the depletion type N-channel MOS transistor Q2;

the drain electrode of the depletion type N-channel MOS tube Q2 is respectively connected with the first end of the resistor R3 and the first end of the input port;

the grid electrode of the depletion type N-channel MOS tube Q2 is connected with the third output end of the controller U2;

The second end of the resistor R3 is connected with the third output end of the controller U2;

The source electrode of the depletion type N-channel MOS tube Q2 is respectively connected with the second detection module and the first end of the second output port.

Optionally, the second detection module comprises a depletion type N-channel MOS transistor Q4-1, a depletion type N-channel MOS transistor Q4-2, a diode D4-1, a diode D4-2 and a resistor R5;

The anode of the diode D4-1 is connected with the source electrode of the depletion type N-channel MOS tube Q4-1;

the cathode of the diode D4-1 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-1;

The positive electrode of the diode D4-2 is connected with the source electrode of the depletion type N-channel MOS tube Q4-2;

The cathode of the diode D4-2 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-2;

The source electrode of the depletion type N-channel MOS tube Q4-1 is respectively connected with the second end of the controller U2 and the second end of the inductor L1;

The first end of the resistor R5 is connected with the drain electrode of the depletion type N-channel MOS tube Q4-1 and the drain electrode of the depletion type N-channel MOS tube Q4-2 respectively;

the source electrode of the depletion type N-channel MOS tube Q4-2 is respectively connected with the source electrode of the depletion type N-channel MOS tube Q2 and the first end of the second output port;

the first output end of the controller U2 is respectively connected with the second end of the resistor R5, the grid electrode of the depletion type N-channel MOS tube Q4-1 and the grid electrode of the depletion type N-channel MOS tube Q4-2.

Optionally, the input port is a Type-C power input.

Optionally, the first output port and the second output port are Type-C output ports.

Referring to the circuit elements in fig. 2, it can be seen that the controller U2 supplies power to the powered device connected to the first output port and the second output port by controlling the MOS transistors Q3-1 and Q3-2, and Q4-1 and Q4-2 of the on-off module. In addition, the on-off module circuit is used for switching on and off the input port and the voltage V4, so that the voltage is given to the first output port and the second output port.

The controller U2 is used as a module brain core and is responsible for communication with a power supply and powered equipment, the voltage reduction module is controlled to output a voltage current value, the switching logic of the on-off module is controlled, direct charging of single-port equipment is realized, the multi-port equipment is intelligently distributed to the powered equipment through voltage and protocol conversion, and the adapter can release rated power as far as possible.

And secondly, the input port is a Type-C (PD) power supply input end, and the controller controls the output voltage of the access adapter through a PD protocol or a D+D-related protocol.

The first output port and the second output port are Type-C (PD) output ends and are connected with powered equipment, and the powered equipment requests needed voltage, current, power and the like to the controller through a PD protocol or a D+D-related protocol.

The following illustrates how the present multi-port charging circuit module can be implemented to operate properly under the high voltage input conditions of the PD3.1 protocol using conventional devices:

Taking fig. 2 as an example, in the prior art, the circuit has no linear pass-through conversion module. The controller U2 controls the on-off of the MOS tube of the on-off module through four output ports. Specifically, the grid electrode of the MOS tube Q1 is controlled to be conducted, so that the electric energy of the input port is transmitted to the powered device of the output port. And secondly, controlling the DC-DC IC U1 of the voltage reducing module through the controller U2, so that when the circuit is in a high-voltage state, the linear through conversion module is in a linear working state, the voltage reaching the voltage reducing module is reduced, and the voltage reducing module adjusts the voltage, so that the voltage difference of the MOS tube in the on-off module is reduced to a lower-level element.

If the input port input adapter supports the PD3.1 protocol, namely the output of the highest 48V/5A of 240W, the powered device on the first output port or the second output port is inserted, and the powered device is charged at high voltage of 48V, then the controller U2 opens the Q1 switch module of the on-off module, and when the powered device requests the 48V/5A gear, the controller enables the adapter to output 48V/5A through the PD3.1 protocol, so that the PD3.1 240W standard cable function is realized. The voltage V1 at the first end of the input port and the voltage V2 at the first end of the first output port are 48V, if the voltage V4 at the fourth end is 5V, the Q3 switch modules (Q3-1 and Q3-2) of the on-off module can generate a voltage difference of 48V minus 5V which is equal to 43V, if the forward conduction voltage of the body diode on the MOS tube is ignored, the 43V voltage is all added between DS poles of one MOS of the Q3 switch modules (Q3-1 and Q3-2), and only MOS with at least 60V withstand voltage level can be selected in design. One MOS in the Q4 switch module is also selected to withstand voltage of 60V, so that the cost is doubled. If the wireless direct-connection conversion module is used, the input of the voltage reduction module can reach 48V, the capacitor C2 and the DC-DC IC U1 also need to be changed into 60V withstand voltage values, and the volume and the cost of the components can be greatly increased. If the linear pass conversion module is used for linearly stabilizing the voltage of 48V to 20V, the controller U1 can select the medium voltage of 30VIC, and the capacitor C2 can select the conventional capacitor with the voltage withstanding capability of 25V or 35V. After the linear through conversion module is stabilized to 20V level, the controller U2 controls the voltage reduction module to convert the voltage into 20V voltage, then the voltage V4 at the fourth terminal is 20V, the voltage V3 is 48V, the DS pole voltage difference of MOS on the Q3 switch module is 28V, and the voltage-withstanding conventional MOS of 30V can be selected within the range of 30V. The PD 3.1W standard cable function realized by using the conventional electronic component is completed, and meanwhile, the cost of the component is reduced.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely used to illustrate the relative positional relationships between the components or portions, and do not particularly limit the specific mounting orientations of the components or portions.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure for the purpose of understanding and reading by those skilled in the art, and are not intended to limit the scope of the application, which is defined by the appended claims, so that any structural modifications, proportional changes, or dimensional adjustments should not be made in the essential significance of the present disclosure without affecting the efficacy or achievement of the present application.