A vehicle-mounted AC / DC input water purifier power adapter

Abstract

The present invention relates to the technical field of power adapters, and specifically to a vehicle-mounted AC / DC input power adapter for a water purifier, comprising a housing and a circuit board arranged in the housing; the circuit board is provided with a DC input port, an AC input port, a voltage output port, an AC conversion circuit, and a DC conversion circuit; the DC input port is connected to the voltage output port via a DC conversion circuit; the AC input port is connected to the voltage output port via an AC conversion circuit. The present invention integrates an AC conversion circuit and a DC conversion circuit in the same circuit board and the same housing, so that the water purifier can be powered both when traveling in the vehicle and when powered by household mains electricity. The power is supplied by an AC input socket and also by a vehicle-mounted cigarette lighter input socket, so that one power source can be used for multiple purposes, power supply equipment can be saved, and multi-functional purposes can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power adapters, and in particular to a vehicle-mounted AC / DC input power adapter for a water purifier. Background Art

[0002] The most common power adapter solution on the market is to connect to 220V (or 110V and other power grid standards in different countries) AC power through a plug and convert it into a standard voltage and DC current that can be used by electronic products.

[0003] When used outdoors, since the voltage output by the input socket of the car cigarette lighter is a DC voltage, the power adapter cannot be directly used in the input socket of the car cigarette lighter, which brings inconvenience to users. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle-mounted AC / DC input water purifier power adapter in view of the above-mentioned deficiencies in the prior art.

[0005] The object of the present invention is achieved through the following technical solutions: A vehicle-mounted AC / DC input water purifier power adapter, comprising a housing and a circuit board arranged in the housing; the circuit board is provided with a DC input port, an AC input port, a voltage output port, an AC conversion circuit and a DC conversion circuit; the DC input port is connected to the voltage output port through the DC conversion circuit; the AC input port is connected to the voltage output port through the AC conversion circuit;

[0006] The AC conversion circuit includes a rectifier and filter module, a switch conversion module, a PWM pulse width control module, a voltage stabilization output module and a feedback voltage stabilization module; the AC input port is connected to the input end of the rectifier and filter module; the output end of the rectifier and filter module is connected to the input end of the switch conversion module; the output end of the switch conversion module is connected to the input end of the voltage stabilization output module; the input end of the feedback voltage stabilization module is connected to the voltage stabilization output module; the output end of the feedback voltage stabilization module is connected to the PWM pulse width control module; the PWM pulse width control module is used to control the switch conversion module; the output end of the voltage stabilization output module is connected to the voltage output port.

[0007] The present invention is further configured such that a fuse F, a varistor MOV and a thermistor NTC are provided between the AC input port and the rectifier and filter module; the AC input port includes an L terminal and an N terminal; the L terminal is connected to the N terminal through the fuse F and the varistor MOV in sequence; the L terminal is connected to the input terminal of the rectifier and filter module through the fuse F and the thermistor NTC in sequence.

[0008] The present invention is further configured that the rectification and filtering module includes a capacitor CX1, a common mode inductor LF1, a rectifier bridge BD and a capacitor C28;

[0009] The AC input port is connected to the input end of the rectifier bridge BD through capacitor CX1 and common mode inductor LF1 in sequence; the output end of the rectifier bridge BD is grounded through capacitor C28; the output end of the rectifier bridge BD is connected to the input end of the switch conversion module.

[0010] The present invention is further configured such that the switch conversion module includes a resistor R34, a capacitor C29, a diode D9, a transformer T4, a MOS tube Q4, a resistor R21, a diode D8, a resistor R23 and a resistor R24;

[0011] One end of the primary winding of the transformer T4 is connected to the output end of the rectifier and filter module; the other end of the primary winding of the transformer T4 is connected to the positive electrode of the diode D9; the negative electrode of the diode D9 is connected to the output end of the rectifier and filter module through the resistor R34 and the capacitor C29 in sequence; the drain of the MOS tube Q4 is connected to the positive electrode of the diode D9; the source of the MOS tube Q4 is grounded through the resistor R24; the gate of the MOS tube Q4 is connected to the source of the MOS tube Q4 through the resistor R23; the gate of the MOS tube Q4 is connected to the control end of the PWM pulse width control module through the resistor R21; the diode D8 is connected in parallel with the resistor R21.

[0012] The present invention is further configured as follows: the PWM pulse width control module includes a PWM control chip U1, a resistor R17 and a resistor R18; the PWM control chip U1 includes a power supply end, a control end and a feedback end; the power supply end is connected to the AC input port through resistors R17 and R18 in sequence; the control end is connected to the switch conversion module; the feedback end is connected to the feedback voltage stabilization module; the model of the PWM control chip U1 is LD5523E.

[0013] The present invention is further configured such that the voltage-stabilized output module includes a Schottky diode D10, a capacitor C31, a capacitor C32, a common-mode inductor LF2 and a diode D6; the anode of the Schottky diode D10 is connected to the output end of the switch conversion module; the cathode of the Schottky diode D10 is grounded through capacitors C31 and C32 respectively; the cathode of the Schottky diode D10 is connected to the voltage output port after passing through the common-mode inductor LF2 and the diode D6 in sequence.

[0014] The present invention is further configured as follows: the feedback voltage stabilization module includes a resistor R28, a resistor R14, a resistor R27, a capacitor C13, a diode D10 and an optocoupler U4; one end of the resistor R28 is connected to the output end of the voltage stabilization output module; the other end of the resistor R28 is grounded through the resistor R14; the other end of the resistor R28 is connected to the input end of the optocoupler U4 after passing through the resistor R27 and the capacitor C13 in sequence; the output end of the optocoupler U4 is connected to the feedback end of the PWM pulse width control module.

[0015] The present invention is further configured such that the DC conversion circuit includes a DC / DC conversion chip U2, an inductor L1, a resistor R5, a resistor R2, a capacitor C4, a MOS tube Q1, a diode D5, a capacitor C5, a capacitor C6 and a diode D7;

[0016] The power port of the DC / DC conversion chip U2 is connected to the DC input port; the first port of the DC / DC conversion chip U2 is connected to the positive electrode of the diode D5 through the inductor L1; the cathode of the diode D5 is connected to the fourth port of the DC / DC conversion chip U2 through the capacitor C5 and the capacitor C6 respectively; the cathode of the diode D5 is connected to the voltage output port through the diode D7; the anode of the diode D5 is connected to the drain of the MOS tube Q1; the source of the MOS tube Q1 is connected to the fourth port of the DC / DC conversion chip U2; the gate of the MOS tube Q1 is connected to the second port of the DC / DC conversion chip U2 through the resistor R5; the model of the DC / DC conversion chip U2 is MC34063.

[0017] Beneficial effects of the present invention: The present invention integrates the AC conversion circuit and the DC conversion circuit into the same circuit board and the same housing, so that the water purifier can be powered by both vehicle-borne travel and household mains power. It is powered by both the AC input socket and the vehicle-borne cigarette lighter input socket, thereby realizing multiple uses of one power supply, saving power supply equipment, and realizing multi-functional uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0019] Figure 1 is a circuit diagram of the present invention;

[0020] Figure 2 is a circuit diagram of an AC conversion circuit of the present invention;

[0021] Figure 3 is a circuit diagram of a DC conversion circuit of the present invention;

[0022] Among them: 1. DC input port; 2. AC input port; 3. Voltage output port; 4. DC conversion circuit; 5. Rectification and filtering module; 6. Switch conversion module; 7. PWM pulse width control module; 8. Voltage stabilization output module; 9. Feedback voltage stabilization module. DETAILED DESCRIPTION

[0023] The present invention is further described in conjunction with the following examples.

[0024] Depend on Figures 1 to 3 It can be seen that the vehicle-mounted AC / DC input water purifier power adapter described in this embodiment includes a shell and a circuit board arranged in the shell; the circuit board is provided with a DC input port 1, an AC input port 2, a voltage output port 3, an AC conversion circuit and a DC conversion circuit 4; the DC input port 1 is connected to the voltage output port 3 through the DC conversion circuit 4; the AC input port 2 is connected to the voltage output port 3 through the AC conversion circuit; the shell and the circuit board are not drawn in the figure;

[0025] The AC conversion circuit includes a rectifier and filter module 5, a switch conversion module 6, a PWM pulse width control module 7, a voltage stabilization output module 8 and a feedback voltage stabilization module 9; the AC input port 2 is connected to the input end of the rectifier and filter module 5; the output end of the rectifier and filter module 5 is connected to the input end of the switch conversion module 6; the output end of the switch conversion module 6 is connected to the input end of the voltage stabilization output module 8; the input end of the feedback voltage stabilization module 9 is connected to the voltage stabilization output module 8; the output end of the feedback voltage stabilization module 9 is connected to the PWM pulse width control module 7; the PWM pulse width control module 7 is used to control the switch conversion module 6; the output end of the voltage stabilization output module 8 is connected to the voltage output port 3.

[0026] Specifically, the vehicle-mounted AC / DC input water purifier power adapter described in this embodiment, when it is necessary to power the water purifier through the mains, the mains inputs AC power to the AC input port 2, and then the AC power passes through the rectifier and filter module 5, the switch conversion module 6, the PWM pulse width control module 7, the voltage stabilization output module 8 and the feedback voltage stabilization module 9 to output a stable DC voltage to the voltage output port 3, thereby powering the water purifier; when outdoors, it is necessary to power the water purifier through the vehicle-mounted cigarette lighter input socket, the vehicle-mounted cigarette lighter input socket outputs a DC voltage to the DC input port 1, and then the DC conversion circuit 4 amplifies the voltage and outputs a stable DC voltage to the voltage output port 3, thereby powering the water purifier; this embodiment integrates the AC conversion circuit and the DC conversion circuit 4 in the same circuit board and the same housing, so that the water purifier can be powered by both vehicle travel and household mains, and is powered by the AC input socket and the vehicle-mounted cigarette lighter input socket at the same time, so that one power supply can be used for multiple purposes, power supply equipment can be saved, and multi-functional purposes can be achieved.

[0027] In the vehicle-mounted AC / DC input water purifier power adapter described in this embodiment, a fuse F, a varistor MOV and a thermistor NTC are provided between the AC input port 2 and the rectifier and filter module 5; the AC input port 2 includes an L terminal and an N terminal; the L terminal is connected to the N terminal through the fuse F and the varistor MOV in turn; the L terminal is connected to the input terminal of the rectifier and filter module 5 through the fuse F and the thermistor NTC in turn.

[0028] Specifically, the fuse F provides power-off protection for circuit abnormalities; the varistor MOV can absorb the lightning energy of the L line to the N line; the thermistor NTC can be used to reduce the input surge current to prevent the LN input mains from entering with a large peak current at the moment of startup to damage the subsequent circuit parts.

[0029] In the vehicle-mounted AC / DC input water purifier power adapter described in this embodiment, the rectifier and filter module 5 includes a capacitor CX1, a common mode inductor LF1, a rectifier bridge BD and a capacitor C28;

[0030] The AC input port 2 is connected to the input end of the rectifier bridge BD through the capacitor CX1 and the common mode inductor LF1 in sequence; the output end of the rectifier bridge BD is grounded through the capacitor C28; the output end of the rectifier bridge BD is connected to the input end of the switch conversion module 6.

[0031] Specifically, capacitor CX1, common-mode inductor LF1, rectifier bridge BD and capacitor C28 constitute an EMI filter circuit; capacitor CX1 and common-mode inductor LF1 of the EMI filter circuit filter out interference from the mains line, which is then rectified by rectifier bridge stack BD and filtered by capacitor C28 into a smooth DC voltage to provide energy for the switch conversion module 6.

[0032] In this embodiment, the switch conversion module 6 of the vehicle-mounted AC / DC input water purifier power adapter includes a resistor R34, a capacitor C29, a diode D9, a transformer T4, a MOS tube Q4, a resistor R21, a diode D8, a resistor R23 and a resistor R24;

[0033] One end of the primary winding of the transformer T4 is connected to the output end of the rectifier and filter module 5; the other end of the primary winding of the transformer T4 is connected to the positive electrode of the diode D9; the negative electrode of the diode D9 is connected to the output end of the rectifier and filter module 5 through the resistor R34 and the capacitor C29 in sequence; the drain of the MOS tube Q4 is connected to the positive electrode of the diode D9; the source of the MOS tube Q4 is grounded through the resistor R24; the gate of the MOS tube Q4 is connected to the source of the MOS tube Q4 through the resistor R23; the gate of the MOS tube Q4 is connected to the control end of the PWM pulse width control module 7 through the resistor R21; the diode D8 is connected in parallel with the resistor R21.

[0034] Specifically, in the vehicle-mounted AC / DC input water purifier power adapter described in this embodiment, the switch conversion module 6 receives the energy supplied by the rectifier filter module 5 from the primary winding of the transformer T4, and the MOS tube Q4 is controlled by the PWM control chip U1. When the PWM control chip U1 is working, the MOS tube Q4 is in a high-speed on and off state, so that the transformer T4 always follows it to work in a state of energy storage and release. At the same time, the resistor R34, the capacitor C29, and the diode D9 serve as an absorption circuit to absorb the peak current and voltage caused by the switching pulse.

[0035] The present embodiment describes a vehicle-mounted AC / DC input water purifier power adapter, wherein the PWM pulse width control module 7 includes a PWM control chip U1, a resistor R17, and a resistor R18; the PWM control chip U1 includes a power supply end, a control end, and a feedback end; the power supply end is connected to the AC input port 2 through resistors R17 and R18 in sequence; the control end is connected to a switch conversion module 6; the feedback end is connected to a feedback voltage stabilization module 9; the model of the PWM control chip U1 is LD5523E.

[0036] The present embodiment describes a vehicle-mounted AC / DC input water purifier power adapter, wherein the voltage stabilizing output module 8 includes a Schottky diode D10, a capacitor C31, a capacitor C32, a common-mode inductor LF2, and a diode D6; the positive electrode of the Schottky diode D10 is connected to the output end of the switch conversion module 6; the negative electrode of the Schottky diode D10 is grounded through capacitors C31 and C32 respectively; the negative electrode of the Schottky diode D10 is connected to the voltage output port 3 after passing through the common-mode inductor LF2 and the diode D6 in turn.

[0037] Specifically, the function of the voltage stabilizing output module 8 is to convert the voltage sensed by the secondary winding of the switch conversion module 6 into a smooth and stable DC voltage required by the external device. The Schottky diode D10 is turned on when the MOS tube Q4 is turned off to release the energy, rectifying it into the DC power required by the secondary side, and the capacitors C31 and C32 filter and store the energy, and then supply it to the electrical equipment.

[0038] The present embodiment describes a vehicle-mounted AC / DC input water purifier power adapter, wherein the feedback voltage stabilization module 9 includes a resistor R28, a resistor R14, a resistor R27, a capacitor C13, a diode D10 and an optocoupler U4; one end of the resistor R28 is connected to the output end of the voltage stabilization output module 8; the other end of the resistor R28 is grounded through the resistor R14; the other end of the resistor R28 is connected to the input end of the optocoupler U4 after passing through the resistor R27 and the capacitor C13 in sequence; the output end of the optocoupler U4 is connected to the feedback end of the PWM pulse width control module 7.

[0039] Specifically, the feedback voltage stabilization module 9 detects the change of the output of the sampling voltage stabilization output module 8 through the resistor R28, the resistor R14, the resistor R27, the capacitor C13, the diode D10 and the optocoupler U4, and then controls the working pulse width of the MOS tube Q4 through the PWM control chip U1, so that the output always maintains a stable voltage and current output.

[0040] In the embodiment of the present invention, a vehicle-mounted AC / DC input water purifier power adapter is described, wherein the DC conversion circuit 4 includes a DC / DC conversion chip U2, an inductor L1, a resistor R5, a resistor R2, a capacitor C4, a MOS tube Q1, a diode D5, a capacitor C5, a capacitor C6 and a diode D7;

[0041] The power port of the DC / DC conversion chip U2 is connected to the DC input port 1; the first port of the DC / DC conversion chip U2 is connected to the positive electrode of the diode D5 through the inductor L1; the cathode of the diode D5 is connected to the fourth port of the DC / DC conversion chip U2 through the capacitor C5 and the capacitor C6 respectively; the cathode of the diode D5 is connected to the voltage output port 3 through the diode D7; the anode of the diode D5 is connected to the drain of the MOS tube Q1; the source of the MOS tube Q1 is connected to the fourth port of the DC / DC conversion chip U2; the gate of the MOS tube Q1 is connected to the second port of the DC / DC conversion chip U2 through the resistor R5; the model of the DC / DC conversion chip U2 is MC34063.

[0042] Specifically, the DC conversion circuit 4 forms a DC TO DC conversion circuit through a DC / DC conversion chip U2, an inductor L1, a resistor R5, a resistor R2, a capacitor C4, a MOS tube Q1, a diode D5, a capacitor C5, a capacitor C6 and a diode D7, which converts the 12VDC voltage of the vehicle's cigarette lighter input socket into the 24V DC voltage required by the water purifier. D6 and D7 isolate the output voltage during AC and DC power supply to prevent mutual interference and ensure the stability of the output voltage.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A vehicle-mounted AC / DC input water purifier power adapter, characterized in that: The invention comprises a housing and a circuit board arranged in the housing; the circuit board is provided with a DC input port (1), an AC input port (2), a voltage output port (3), an AC conversion circuit and a DC conversion circuit (4); the DC input port (1) is connected to the voltage output port (3) via the DC conversion circuit (4); the AC input port (2) is connected to the voltage output port (3) via the AC conversion circuit; The AC conversion circuit comprises a rectifier filter module (5), a switch conversion module (6), a PWM pulse width control module (7), a voltage stabilization output module (8) and a feedback voltage stabilization module (9); the AC input port (2) is connected to the input end of the rectifier filter module (5); the output end of the rectifier filter module (5) is connected to the input end of the switch conversion module (6); the output end of the switch conversion module (6) is connected to the input end of the voltage stabilization output module (8); the input end of the feedback voltage stabilization module (9) is connected to the voltage stabilization output module (8); the output end of the feedback voltage stabilization module (9) is connected to the PWM pulse width control module (7); the PWM pulse width control module (7) is used to control the switch conversion module (6); the output end of the voltage stabilization output module (8) is connected to the voltage output port (3); When the water purifier needs to be powered by the mains, the mains inputs AC power to the AC input port (2), and then the AC power passes through the rectifier filter module (5), the switch conversion module (6), the PWM pulse width control module (7), the voltage stabilization output module (8) and the feedback voltage stabilization module (9) to output a stable DC voltage to the voltage output port (3), thereby powering the water purifier; when outdoors, the water purifier needs to be powered by the vehicle cigarette lighter input socket, the vehicle cigarette lighter input socket outputs a DC voltage to the DC input port (1), and then the DC conversion circuit (4) amplifies the voltage and outputs a stable DC voltage to the voltage output port (3), thereby powering the water purifier; A fuse F, a varistor MOV and a thermistor NTC are provided between the AC input port (2) and the rectifier and filter module (5); the AC input port (2) comprises an L end and an N end; the L end is connected to the N end through the fuse F and the varistor MOV in sequence; the L end is connected to the input end of the rectifier and filter module (5) through the fuse F and the thermistor NTC in sequence; The fuse F provides power-off protection for circuit abnormalities; the varistor MOV absorbs the lightning energy of the L line to the N line; the thermistor NTC is used to reduce the input surge current; The switch conversion module (6) comprises a resistor R34, a capacitor C29, a diode D9, a transformer T4, a MOS tube Q4, a resistor R21, a diode D8, a resistor R23 and a resistor R24; One end of the primary winding of the transformer T4 is connected to the output end of the rectifier and filter module (5); the other end of the primary winding of the transformer T4 is connected to the positive electrode of the diode D9; the negative electrode of the diode D9 is connected to the output end of the rectifier and filter module (5) through the resistor R34 and the capacitor C29 in sequence; the drain of the MOS tube Q4 is connected to the positive electrode of the diode D9; the source of the MOS tube Q4 is grounded through the resistor R24; the gate of the MOS tube Q4 is connected to the source of the MOS tube Q4 through the resistor R23; the gate of the MOS tube Q4 is connected to the control end of the PWM pulse width control module (7) through the resistor R21; the diode D8 is connected in parallel with the resistor R21; The switch conversion module (6) receives energy supplied by the rectifier filter module (5) through the primary winding of the transformer T4. The MOS tube Q4 is controlled by the PWM control chip U1. When the PWM control chip U1 is working, the MOS tube Q4 is in a high-speed on and off state, so that the transformer T4 always follows it to work in a state of energy storage and energy release; at the same time, the resistor R34, the capacitor C29, and the diode D9 serve as an absorption circuit to absorb the peak current and voltage caused by the switching pulse; The PWM pulse width control module (7) comprises a PWM control chip U1, a resistor R17 and a resistor R18; the PWM control chip U1 comprises a power supply end, a control end and a feedback end; the power supply end is connected to the AC input port (2) through the resistor R17 and the resistor R18 in sequence; the control end is connected to the switch conversion module (6); the feedback end is connected to the feedback voltage stabilization module (9); the model of the PWM control chip U1 is LD5523E; The feedback voltage stabilization module (9) comprises a resistor R28, a resistor R14, a resistor R27, a capacitor C13, a diode D10 and an optical coupler U4; one end of the resistor R28 is connected to the output end of the voltage stabilization output module (8); the other end of the resistor R28 is grounded via the resistor R14; the other end of the resistor R28 is connected to the input end of the optical coupler U4 via the resistor R27 and the capacitor C13 in sequence; the output end of the optical coupler U4 is connected to the feedback end of the PWM pulse width control module (7); The feedback voltage stabilization module (9) detects the change of the output of the sampling voltage stabilization output module (8) through the resistor R28, the resistor R14, the resistor R27, the capacitor C13, the diode D10 and the optical coupler U4, and then controls the working pulse width of the MOS tube Q4 through the PWM control chip U1, so that the output always maintains a stable voltage and current output; The DC conversion circuit (4) comprises a DC / DC conversion chip U2, an inductor L1, a resistor R5, a resistor R2, a capacitor C4, a MOS tube Q1, a diode D5, a capacitor C5, a capacitor C6 and a diode D7; The power supply port of the DC / DC conversion chip U2 is connected to the DC input port (1); the first port of the DC / DC conversion chip U2 is connected to the positive electrode of the diode D5 through the inductor L1; the negative electrode of the diode D5 is connected to the fourth port of the DC / DC conversion chip U2 through the capacitor C5 and the capacitor C6 respectively; the negative electrode of the diode D5 is connected to the voltage output port (3) through the diode D7; the positive electrode of the diode D5 is connected to the drain of the MOS tube Q1; the source of the MOS tube Q1 is connected to the fourth port of the DC / DC conversion chip U2; the gate of the MOS tube Q1 is connected to the second port of the DC / DC conversion chip U2 through the resistor R5; the model of the DC / DC conversion chip U2 is MC34063; The DC conversion circuit (4) is composed of a DC / DC conversion chip U2, an inductor L1, a resistor R5, a resistor R2, a capacitor C4, a MOS tube Q1, a diode D5, a capacitor C5, a capacitor C6 and a diode D7 to form a DC TO DC conversion circuit, which converts the 12VDC voltage of the vehicle cigarette lighter input socket into the 24V DC voltage required by the water purifier.

2. The vehicle-mounted AC / DC input water purifier power adapter according to claim 1, characterized in that: The rectification and filtering module (5) comprises a capacitor CX1, a common mode inductor LF1, a rectifier bridge BD and a capacitor C28; The AC input port (2) is connected to the input end of the rectifier bridge BD via a capacitor CX1 and a common mode inductor LF1 in sequence; the output end of the rectifier bridge BD is grounded via a capacitor C28; and the output end of the rectifier bridge BD is connected to the input end of the switch conversion module (6).

3. The vehicle-mounted AC / DC input water purifier power adapter according to claim 1, characterized in that: The voltage-stabilizing output module (8) comprises a Schottky diode D10, a capacitor C31, a capacitor C32, a common-mode inductor LF2 and a diode D6; the anode of the Schottky diode D10 is connected to the output end of the switch conversion module (6); the cathode of the Schottky diode D10 is grounded via the capacitor C31 and the capacitor C32 respectively; the cathode of the Schottky diode D10 is connected to the voltage output port (3) via the common-mode inductor LF2 and the diode D6 in sequence.

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