Round hole adapter and Type-C adapter plugging switching non-power-down module

Abstract

The invention relates to the technical field of power supply circuits, in particular to a module for preventing power failure during plugging and unplugging switching of a round hole adapter and a Type-C adapter. The device comprises an uninterruptible power supply module, a round hole adapter and a Type-C adapter. According to the method and the device, when the circular hole adapter and the Type-C adapter are accessed at the same time, the system is preferentially started by the circular hole adapter; if the round hole adapter is pulled out during operation, the module is quickly grounded through a Switch pin of the module, the system is notified to reduce frequency so as to reduce power consumption, meanwhile, Type-C power supply is seamlessly switched, and shutdown caused by voltage drop is avoided; if the system is only powered by the Type-C originally, after the round hole adapter is inserted, the module automatically cuts off the Type-C after the voltage of the module is stable, and the round hole adapter is switched to preferentially supply power, so that the mechanism not only enables a user to randomly plug and unplug different power supplies without shutdown, but also greatly improves the reliability and operation convenience of continuous operation of equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply circuits, and in particular to a module for plugging and switching between a round hole adapter and a Type-C adapter without power failure. Background Art

[0002] The power supply circuit is the core system in electronic equipment responsible for providing a stable power supply. It converts the input power into the DC or AC power required by the device to achieve energy transmission, signal processing and system control.

[0003] Traditional laptops rely on built-in batteries to provide continuous power even when disconnected from an external power adapter, effectively ensuring work continuity and device mobility. However, most current mini PCs and other compact computer devices that use both a round-hole adapter and a Type-C port for power supply often do not integrate a battery module in pursuit of miniaturization and cost reduction. This leads to a significant structural shortcoming: the inability to switch between the two power input methods without interrupting power supply during system operation.

[0004] If a user plugs or unplugs any power connector while the device is running, it will immediately cause power outages and system downtime. This sudden power outage not only interrupts user operations and affects work efficiency, but can also cause data loss, file system corruption, and even hardware failure, severely limiting the reliability of such devices in mission-critical and continuous use scenarios. Therefore, providing a module that can achieve uninterrupted power switching between Type-C and round-hole adapters has become a key technical requirement for improving the practicality and user experience of such devices. Summary of the Invention

[0005] The present invention aims to solve the problem that miniaturized electronic devices without integrated battery modules cannot switch power sources without power failure.

[0006] The purpose of the present invention is to provide a module that can be plugged in and out of a round hole adapter and a Type-C adapter without power failure. By introducing a special round hole DC connector and circuit design, it ensures seamless power connection when the host is turned on, avoids system power failure, and improves the convenience and stability of device use.

[0007] To achieve the above objectives, the present invention provides a module for plugging and switching between a round hole adapter and a Type-C adapter without power failure, comprising an uninterruptible power supply module and a round hole adapter and a Type-C adapter electrically connected to the uninterruptible power supply module. The uninterruptible power supply module includes a power adapter circuit, a control switching circuit, and a load control circuit. The round hole adapter and the Type-C adapter are connected to the power adapter circuit, the power adapter circuit is connected to the control switching circuit and the load control circuit, the control switching circuit is connected to the load control circuit, and the load control circuit is connected to the processor; When the power adapter circuit detects that the round hole adapter is inserted / unplugged, the power supply is switched through the control switching circuit, and the processor load is adjusted through the load control circuit.

[0008] As a further improvement of the present technical solution, the power adapter circuit includes a circular hole detection circuit, a first adapter circuit and a second adapter circuit; The first adaptation circuit is connected to the Type-C adapter to adapt the power supply current of the Type-C adapter; The second adaptation circuit and the round hole detection circuit are both connected to the round hole adapter, the second adaptation circuit is used to adapt the power supply current of the round hole adapter, and the round hole detection circuit is used to detect the plug-in and unplug status of the round hole adapter; The circular hole detection circuit, the first adaptation circuit, and the second adaptation circuit are all connected to the control switching circuit.

[0009] As a further improvement of the technical solution, the circular hole detection circuit includes MOS tubes Q5903, Q5904, and Q5905; The gate of the MOS transistor Q5903 is connected to the resistor R5906, the resistor R5906 is connected to the mechanical switch pin end, the source of the MOS transistor Q5903 is grounded, the drain of the MOS transistor Q5903 is connected to the resistor R5904 and is connected to the gate of the MOS transistor Q5904 and the gate of the MOS transistor Q5905, and the resistor R5904 is connected to the +3V_CTRL end; The source of the MOS tube Q5904 is grounded, the drain of the MOS tube Q5904 is connected to the resistor R5905, and the resistor R5905 is connected to the round head adapter inserted into the signal terminal; The source of the MOS tube Q5905 is grounded, the drain of the MOS tube Q5905 is connected to the resistor R5907, and the resistor R5907 is connected to the 19V power supply terminal.

[0010] As a further improvement of this technical solution, the round hole adapter is a connector J5901; The second adaptation circuit includes MOS tubes PQ5901, PQ5902, and PQ5903; The gate of the MOS transistor PQ5901 is connected to the gate of the MOS transistor PQ5902 and is connected to capacitors PC5902, PC5905, PC5906, and resistor PR5904. The source of the MOS transistor PQ5901 is connected to the source of the MOS transistor PQ5902, resistor PR5903, and is connected to the other end of the capacitor PC5902. The drain of the MOS tube PQ5902 is connected to the capacitor PC5907, the other end of the capacitor PC5906 is connected in parallel to the system power supply terminal, and the capacitor PC5907 is grounded; The source of the MOS tube PQ5901 is connected to the capacitor PC5901, the resistors PR5901 and PR5902, the inductor PL5901 and connected to the +19V power supply and the capacitor PC5905. The resistor PR5901 is connected to the other end of the resistor PR5902 and connected to the capacitor PC5908. The capacitor PC5908 is grounded. The inductor PL5901 is connected to the capacitors PC5903, PC5904, the negative end of the diode PV5901, the power supply end of the round adapter and the DC IN pin of the connector J5901. The capacitor PC5903 is connected to the other end of the capacitor PC5904, the positive end of the diode PV5901, the GND pin of the connector J5901 and grounded. The SWITCH pin of the connector J5901 is connected to the pin end of the mechanical switch; The gate of the MOS tube PQ5903 is connected to the capacitor PC5909, the resistor PR5906, and the resistor PR5907, and is connected to the round head adapter plugged into the signal terminal. The resistor PR5906 is connected to the 19V power supply terminal. The resistor PR5907 is connected to the other end of the capacitor PC5909 and grounded. The drain of the MOS tube PQ5903 is connected to the resistor PR5905, and the resistor PR5905 is connected to the other end of the resistor PR5903 and the other end of the resistor PR5904; The source of the MOS tube PQ5903 is grounded.

[0011] As a further improvement of the technical solution, the control switching circuit includes MOS tubes Q4701, Q4702, Q4703, and Q4704; The gate of the MOS transistor Q4701 is connected to the gate of the MOS transistor Q4702, the capacitor C4701 is connected in parallel to the resistors R4704 and R4705; The source of the MOS transistor Q4701 is connected to the source of the MOS transistor Q4702 and is connected to the other end of the resistor R4704 and the other end of the capacitor C4701. The drain of the MOS transistor Q4702 is connected to the system power supply terminal. The drain of the MOS transistor Q4701 is connected to the capacitors C4702, C4703, and C4704, the negative end of the diode V4715, and the Type-C power supply end, which is connected to the first adapter circuit. The positive end of the diode V4715 is connected to the other end of the capacitor C4702, the other end of the capacitor C4703, and the other end of C4704 and to ground. The gate of the MOS transistor Q4703 is connected to the drain of the MOS transistor Q4704 and is connected to resistors R4706 and R4707. The resistor R4707 is grounded. The source of the MOS transistor Q4703 is grounded. The gate of the MOS tube Q4704 is connected to a round head adapter which is inserted into the signal terminal, and the source of the MOS tube Q4704 is grounded.

[0012] As a further improvement of the technical solution, the load control circuit includes MOS tubes Q5901A and Q5901B; The gate of the MOS transistor Q5901A is connected to resistors R5901, R5902, and capacitor C5901 and connected to the resistor voltage divider signal terminal. The resistor R5901 is connected to the +3V_CTRL terminal. The resistor R5902 is connected to the other end of the capacitor C5901 and connected to the mechanical switch pin terminal. The source of the MOS transistor Q5901A is grounded, the drain of the MOS transistor Q5901A is connected to the resistor R5903 and connected to the gate of the MOS transistor Q5091B, and the resistor R5903 is connected to the +3.3V_LDO terminal; The source of the MOS transistor Q5901B is grounded, the drain of the MOS transistor Q5901B is connected to the resistor R5910, and the resistor R5910 is connected to the frequency reduction signal terminal.

[0013] In the present invention, when the round-hole adapter and the Type-C adapter are connected to the host device at the same time, the host device is powered on by the round-hole adapter first. After the power is turned on, the adapter is unplugged. Before the system power drops to insufficient to maintain normal operation of the system, the Switch pin of the round-hole adapter connector interface is quickly grounded, notifying the host to reduce the frequency to reduce the load, and at the same time switching to the Type-C adapter for power supply, so that the system can operate normally. When the system is powered only by the Type-C adapter, insert the round-hole adapter. When the voltage of the round-hole adapter reaches a level that allows the system to work stably, disconnect the Type-C adapter, so that the round-hole adapter will be used for power supply first.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this module, which allows users to switch between a round-hole adapter and a Type-C adapter without power failure, when both are connected, the system starts up with the round-hole adapter first. If the round-hole adapter is removed during operation, the module quickly grounds its Switch pin, notifying the system to reduce power consumption and seamlessly switching to Type-C power supply to avoid shutdown caused by voltage drops. On the contrary, if the system is originally powered only by Type-C, after inserting the round hole adapter, the module will automatically cut off the Type-C after its voltage stabilizes, and switch to the round hole adapter for power supply. This mechanism not only allows users to plug and unplug between different power sources without shutting down, but also greatly improves the reliability and operational convenience of the device's continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a circular hole detection circuit diagram of the present invention; Figure 3 The second adaptation circuit of the present invention Figure 1 ; Figure 4 The second adaptation circuit of the present invention Figure 2 ; Figure 5 The second adaptation circuit of the present invention Figure 3 ; Figure 6 This is a control switching circuit diagram of the present invention; Figure 7 This is a load control circuit diagram of the present invention. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0018] See also Figure 1-Figure 7As shown, the purpose of this embodiment is to provide a non-power-off module for plugging and switching between a round hole adapter and a Type-C adapter, including an uninterruptible power supply module and a round hole adapter and a Type-C adapter electrically connected to the uninterruptible power supply module. The uninterruptible power supply module includes a power adapter circuit, a control switching circuit, and a load control circuit; The round hole adapter and the Type-C adapter are connected to the power adapter circuit, the power adapter circuit is connected to the control switching circuit and the load control circuit, the control switching circuit is connected to the load control circuit, and the load control circuit is connected to the processor (CPU); When the power adapter circuit detects the insertion / removal of the round-hole adapter, it switches the power supply by controlling the switching circuit and adjusts the processor load through the load control circuit, thereby achieving rapid conversion between the type-C adapter power supply and the round-hole adapter power supply. The response time of the entire switching process can be controlled at the microsecond level, effectively preventing system voltage drops.

[0019] The power adapter circuit includes a circular hole detection circuit, a first adapter circuit and a second adapter circuit; The first adaptation circuit is connected to the Type-C adapter to adapt the power supply current of the Type-C adapter; The second adaptation circuit and the round hole detection circuit are both connected to the round hole adapter, the second adaptation circuit is used to adapt the power supply current of the round hole adapter, and the round hole detection circuit is used to detect the plug-in and unplug status of the round hole adapter; The circular hole detection circuit, the first adaptation circuit, and the second adaptation circuit are all connected to the control switching circuit.

[0020] The circular hole detection circuit includes MOS tubes Q5903, Q5904, and Q5905; The gate of MOS tube Q5903 is connected to resistor R5906, which is connected to the mechanical switch pin. The source of MOS tube Q5903 is grounded. The drain of MOS tube Q5903 is connected to resistor R5904 and connected to the gate of MOS tube Q5904 and the gate of MOS tube Q5905. Resistor R5904 is connected to the +3V_CTRL terminal. The source of MOS tube Q5904 is grounded, the drain of MOS tube Q5904 is connected to resistor R5905, and resistor R5905 is connected to the round head adapter and inserted into the signal terminal; The source of the MOS tube Q5905 is grounded, the drain of the MOS tube Q5905 is connected to the resistor R5907, and the resistor R5907 is connected to the 19V power supply terminal.

[0021] The round hole adapter is connector J5901; The second adaptation circuit includes MOS tubes PQ5901, PQ5902, and PQ5903; The gate of MOS tube PQ5901 is connected to the gate of MOS tube PQ5902 and is connected in parallel to capacitors PC5902, PC5905, PC5906, and resistor PR5904. The source of MOS tube PQ5901 is connected to the source of MOS tube PQ5902, resistor PR5903 and is connected in parallel to the other end of capacitor PC5902. The drain of MOS tube PQ5902 is connected to capacitor PC5907, the other end of capacitor PC5906 is connected to the system power supply terminal, and capacitor PC5907 is grounded; The source of MOS tube PQ5901 is connected to capacitor PC5901, resistors PR5901, PR5902, inductor PL5901, and connected to a 19V power supply (19V after inductor filtering) and capacitor PC5905. Resistor PR5901 is connected to the other end of resistor PR5902 and connected to capacitor PC5908. Capacitor PC5908 is grounded. Connect inductor PL5901 to capacitors PC5903, PC5904, the negative end of diode PV5901, the power supply end of the round adapter, and then to the DC IN pin of connector J5901. Connect capacitor PC5903 to the other end of capacitor PC5904, the positive end of diode PV5901, the GND pin of connector J5901, and then to ground. The SWITCH pin of connector J5901 is connected to the mechanical switch pin end; Connect the gate of MOS tube PQ5903 to capacitor PC5909, resistor PR5906, and resistor PR5907, and connect a round adapter to the signal terminal. Connect resistor PR5906 to the 19V power terminal. Connect resistor PR5907 to the other end of capacitor PC5909 and ground. The drain of MOS tube PQ5903 is connected to resistor PR5905, and resistor PR5905 is connected to the other end of resistor PR5903 and the other end of resistor PR5904; The source of the MOS tube PQ5903 is grounded.

[0022] The 19V power supply is connected to resistor R5908, resistor R5908 is connected to resistor R5909 and connected to the positive terminal of diode D5902, resistor R5909 is grounded, the negative terminal of diode D5902 is connected to the negative terminal of diode D5901 and connected to the +3V_CTRL terminal, and the positive terminal of diode D5901 is connected to the +3.3V_LDO terminal.

[0023] The round hole detection circuit adopts a high-speed comparison structure composed of MOS tubes Q5903, Q5904, Q5905, etc., which can send a round head adapter insertion signal within 1ms after detecting the plugging and unplugging event, greatly improving the real-time performance of status perception.

[0024] The default state is that the Type-C adapter outputs power to the control switching module through the first adapter circuit. When the connector J5901 is plugged into the terminal for power supply, the power supply current is converted to the processor working power supply through the second adapter circuit and output to the control switching module, which then powers the processor. When the connector J5901 is plugged into the terminal for power supply, the round head adapter insertion signal output by the round hole detection circuit quickly jumps to a high level. The control switching circuit accordingly closes the Type-C power supply path and seamlessly switches to the round hole adapter for power supply. The switching delay is less than 500µs, and the voltage fluctuation range is controlled within 5%, ensuring that the system operation is not affected.

[0025] The control switching circuit includes MOS tubes Q4701, Q4702, Q4703, and Q4704; The gate of MOS tube Q4701 is connected to the gate of MOS tube Q4702, capacitor C4701 is connected in parallel to resistors R4704 and R4705; The source of MOS tube Q4701 is connected to the source of MOS tube Q4702 and is connected in parallel to the other end of resistor R4704 and the other end of capacitor C4701. The drain of MOS tube Q4702 is connected to the system power supply terminal. The drain of MOS tube Q4701 is connected to capacitors C4702, C4703, and C4704, and the negative end of diode V4715 is connected in series to the Type-C power supply terminal. The Type-C power supply terminal is connected to the first adapter circuit. The positive end of diode V4715 is connected to the other end of capacitor C4702, the other end of capacitor C4703, and the other end of C4704, and grounded. The gate of the MOS tube Q4703 is connected to the drain of the MOS tube Q4704 and is connected in parallel to the resistors R4706 and R4707. The resistor R4707 is grounded, and the source of the MOS tube Q4703 is grounded. The gate of the MOS tube Q4704 is connected to the round head adapter and inserted into the signal terminal, and the source of the MOS tube Q4704 is grounded.

[0026] When the round-head adapter and the Type-C adapter (including a display with a one-line power supply function) are connected to the host device at the same time, the round-head adapter insertion signal is high, which makes the gate of the NMOS tube Q4703 low, thereby shutting off the two back-to-back PMOS connections above (i.e., MOS tubes Q4701 and Q4702), making the Type-C adapter unable to supply power, and the round-head adapter takes priority for power supply.

[0027] The control switching circuit adopts a combination structure of back-to-back PMOS tube groups (Q4701, Q4702) and NMOS control tubes (Q4703, Q4704), with low on-resistance (<20mΩ) and high-frequency response characteristics, supporting rapid flow conversion of multi-ampere currents.

[0028] The load control circuit includes MOS tubes Q5901A and Q5901B; The gate of MOS tube Q5901A is connected to resistors R5901, R5902, and capacitor C5901, and connected to the resistor voltage divider signal terminal. Resistor R5901 is connected to the +3V_CTRL terminal. Resistor R5902 is connected to the other end of capacitor C5901 and connected to the mechanical switch pin terminal. The source of MOS tube Q5901A is grounded, the drain of MOS tube Q5901A is connected to resistor R5903 and connected to the gate of MOS tube Q5091B, and resistor R5903 is connected to the +3.3V_LDO terminal; The source of the MOS tube Q5901B is grounded, the drain of the MOS tube Q5901B is connected to the resistor R5910, and the resistor R5910 is connected to the frequency reduction signal end.

[0029] When the load control circuit detects the removal of the round-plug adapter, it quickly pulls down the frequency reduction signal through the mechanical switch pin signal, notifying the processor to execute the frequency reduction instruction and dynamically adjusting the core voltage and frequency. This reduces system power consumption to a level suitable for Type-C adapter power within 2ms, avoiding power interruptions caused by load dump. When the round-plug adapter is inserted into the Type-C adapter power supply, the round-plug adapter insertion signal is reset to high. Once the control circuit detects that the round-plug power supply is stable (voltage ramp-up time does not exceed 3ms), it immediately cuts off the Type-C power supply and switches to the round-plug power supply, achieving seamless reverse switching.

[0030] When the host device boots up normally and enters the system, unplug the round hole adapter, the Switch pin of the round hole connector will be quickly grounded, and the frequency reduction signal will be pulled low, thereby notifying the processor to perform frequency reduction to reduce the load, so as to facilitate conversion to Type-C adapter power supply.

[0031] When both a round-head adapter and a Type-C adapter (including a monitor with a single-line power supply) are connected to a host device simultaneously, the round-head adapter insertion signal goes high, driving the gate of the NMOS transistor Q4703 low. This turns off the MOS transistors Q4701 and Q4702, connecting the two back-to-back PMOS transistors. This disconnects the Type-C adapter from supplying power, prioritizing the round-head adapter. After the host device boots up and enters the system, unplugging the round-head adapter quickly grounds the round-head connector's switch pin, pulling the frequency reduction signal low. This signals the CPU to reduce the frequency to reduce the load. Simultaneously, the round-head adapter insertion signal is pulled low, driving the gate of the NMOS transistor Q4703 high. This turns on the back-to-back PMOS transistors, allowing the Type-C adapter to connect before the system power drops below the capacity limit, effectively switching power from the round-head adapter to the Type-C adapter.

[0032] When the system is powered by only the Type-C adapter, insert the round-hole adapter. The round-head adapter insertion signal is high, which makes the gate of the Q4703 NMOS tube low, turning off the connection of the two back-to-back PMOS tubes above, thereby realizing rapid conversion between Type-C adapter power supply and round-hole adapter power supply.

[0033] In summary, the present invention provides a module that allows for swapping between a round-hole adapter and a Type-C adapter without power loss. By incorporating a specially constructed round-hole DC connector and corresponding intelligent circuit design, this module automatically detects and coordinates the input status of the two power supply interfaces during host power-up and operation, achieving seamless connection between power sources. This module features high response speed (overall switching time <5ms), low power loss (overall efficiency >95%), and excellent voltage stability (fluctuation no more than ±5%). This design completely eliminates system power outages caused by arbitrarily plugging and unplugging power cords, significantly improving the ease of use and power supply stability of such devices.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A module for swapping between a round-hole adapter and a Type-C adapter without power failure, including an uninterruptible power supply module, a round-hole adapter electrically connected to the uninterruptible power supply module, and a Type-C adapter, characterized by: The uninterruptible power supply module includes a power adapter circuit, a control switching circuit and a load control circuit; The round hole adapter and the Type-C adapter are connected to the power adapter circuit, the power adapter circuit is connected to the control switching circuit and the load control circuit, the control switching circuit is connected to the load control circuit, and the load control circuit is connected to the processor; When the power adapter circuit detects that the round hole adapter is inserted / unplugged, the power supply is switched through the control switching circuit, and the processor load is adjusted through the load control circuit.

2. The module for swapping between a round hole adapter and a Type-C adapter without power failure according to claim 1 is characterized by: The power adapter circuit includes a circular hole detection circuit, a first adapter circuit and a second adapter circuit; The first adaptation circuit is connected to the Type-C adapter to adapt the power supply current of the Type-C adapter; The second adaptation circuit and the round hole detection circuit are both connected to the round hole adapter, the second adaptation circuit is used to adapt the power supply current of the round hole adapter, and the round hole detection circuit is used to detect the plug-in and unplug status of the round hole adapter; The circular hole detection circuit, the first adaptation circuit, and the second adaptation circuit are all connected to the control switching circuit.

3. The module for swapping between a round hole adapter and a Type-C adapter without power failure according to claim 2 is characterized by: The circular hole detection circuit includes MOS tubes Q5903, Q5904, and Q5905; The gate of the MOS transistor Q5903 is connected to the resistor R5906, the resistor R5906 is connected to the mechanical switch pin end, the source of the MOS transistor Q5903 is grounded, the drain of the MOS transistor Q5903 is connected to the resistor R5904 and is connected to the gate of the MOS transistor Q5904 and the gate of the MOS transistor Q5905, and the resistor R5904 is connected to the +3V_CTRL end; The source of the MOS tube Q5904 is grounded, the drain of the MOS tube Q5904 is connected to the resistor R5905, and the resistor R5905 is connected to the round head adapter inserted into the signal terminal; The source of the MOS tube Q5905 is grounded, the drain of the MOS tube Q5905 is connected to the resistor R5907, and the resistor R5907 is connected to the 19V power supply terminal.

4. The module for swapping between a round hole adapter and a Type-C adapter without power failure according to claim 3 is characterized by: The round hole adapter is connector J5901; The second adaptation circuit includes MOS tubes PQ5901, PQ5902, and PQ5903; The gate of the MOS transistor PQ5901 is connected to the gate of the MOS transistor PQ5902 and is connected to capacitors PC5902, PC5905, PC5906, and resistor PR5904. The source of the MOS transistor PQ5901 is connected to the source of the MOS transistor PQ5902, resistor PR5903, and is connected to the other end of the capacitor PC5902. The drain of the MOS tube PQ5902 is connected to the capacitor PC5907, the other end of the capacitor PC5906 is connected in parallel to the system power supply terminal, and the capacitor PC5907 is grounded; The source of the MOS tube PQ5901 is connected to the capacitor PC5901, the resistors PR5901 and PR5902, the inductor PL5901 and connected to a 19V power supply and the capacitor PC5905. The resistor PR5901 is connected to the other end of the resistor PR5902 and connected to the capacitor PC5908. The capacitor PC5908 is grounded. The inductor PL5901 is connected to the capacitors PC5903, PC5904, the negative end of the diode PV5901, the power supply end of the round adapter and the DC IN pin of the connector J5901. The capacitor PC5903 is connected to the other end of the capacitor PC5904, the positive end of the diode PV5901, the GND pin of the connector J5901 and grounded. The SWITCH pin of the connector J5901 is connected to the pin end of the mechanical switch; The gate of the MOS tube PQ5903 is connected to the capacitor PC5909, the resistor PR5906, and the resistor PR5907, and is connected to the round head adapter plugged into the signal terminal. The resistor PR5906 is connected to the 19V power supply terminal. The resistor PR5907 is connected to the other end of the capacitor PC5909 and grounded. The drain of the MOS tube PQ5903 is connected to the resistor PR5905, and the resistor PR5905 is connected to the other end of the resistor PR5903 and the other end of the resistor PR5904; The source of the MOS tube PQ5903 is grounded.

5. The module for swapping between a round hole adapter and a Type-C adapter without power failure according to claim 4 is characterized in that: The control switching circuit includes MOS tubes Q4701, Q4702, Q4703, and Q4704; The gate of the MOS transistor Q4701 is connected to the gate of the MOS transistor Q4702, the capacitor C4701 is connected in parallel to the resistors R4704 and R4705; The source of the MOS transistor Q4701 is connected to the source of the MOS transistor Q4702 and is connected to the other end of the resistor R4704 and the other end of the capacitor C4701. The drain of the MOS transistor Q4702 is connected to the system power supply terminal. The drain of the MOS transistor Q4701 is connected to the capacitors C4702, C4703, and C4704, the negative end of the diode V4715, and the Type-C power supply end, which is connected to the first adapter circuit. The positive end of the diode V4715 is connected to the other end of the capacitor C4702, the other end of the capacitor C4703, and the other end of C4704 and to ground. The gate of the MOS transistor Q4703 is connected to the drain of the MOS transistor Q4704 and is connected to resistors R4706 and R4707. The resistor R4707 is grounded. The source of the MOS transistor Q4703 is grounded. The gate of the MOS tube Q4704 is connected to a round head adapter which is inserted into the signal terminal, and the source of the MOS tube Q4704 is grounded.

6. The module for swapping between a round hole adapter and a Type-C adapter without power failure according to claim 4, characterized in that: The load control circuit includes MOS tubes Q5901A and Q5901B; The gate of the MOS transistor Q5901A is connected to resistors R5901, R5902, and capacitor C5901 and connected to the resistor voltage divider signal terminal. The resistor R5901 is connected to the +3V_CTRL terminal. The resistor R5902 is connected to the other end of the capacitor C5901 and connected to the mechanical switch pin terminal. The source of the MOS transistor Q5901A is grounded, the drain of the MOS transistor Q5901A is connected to the resistor R5903 and connected to the gate of the MOS transistor Q5091B, and the resistor R5903 is connected to the +3.3V_LDO terminal; The source of the MOS transistor Q5901B is grounded, the drain of the MOS transistor Q5901B is connected to the resistor R5910, and the resistor R5910 is connected to the frequency reduction signal terminal.

Images