High-efficiency charger based on NCP1342 and NV6136C

Abstract

The invention relates to the technical field of chargers, and discloses a high-efficiency charger based on NCP1342 and NV6136C. The high-efficiency charger comprises an input circuit, an RCD absorption circuit, a control and power conversion circuit, an output circuit and a feedback circuit. According to the invention, the input circuit, the RCD absorption circuit, the control and power conversion circuit, the output circuit and the feedback circuit work cooperatively to realize an efficient, stable and safe charging process; the input circuit guarantees the stability and safety of an input power supply based on an NTC thermistor, a fuse and a low-pass filtering network; peak and oscillation of power conversion are effectively suppressed based on the RCD absorption circuit, and circuit elements are protected; an NCP1342 chip is used for driving an NV6136C based on a control and power conversion circuit, efficient electric energy conversion and voltage regulation are achieved by means of a transformer, and meanwhile the safety of the protection function is enhanced; the output circuit ensures the quality of output electric energy through diode rectification and capacitor filtering; the feedback circuit accurately adjusts output, and the performance of the charger is comprehensively improved.

Description

Technical Field

[0001] The present application relates to the technical field of chargers, and in particular to a high-efficiency charger based on NCP1342 and NV6136C. Background Art

[0002] In today's era of rapid development of electronic devices, chargers are important components of various electronic devices, and their performance is crucial. Traditional chargers have many shortcomings in terms of power conversion efficiency, stability and safety, which are specifically manifested in: The power conversion devices used in many traditional chargers have limited performance, which will generate a lot of energy loss during the switching process, resulting in low overall charging efficiency. This not only increases energy consumption, but also prolongs the charging time, and cannot meet users' demand for fast charging. Traditional circuit designs often lack effective spike and oscillation suppression measures, and voltage spikes are prone to occur during the power conversion process, which causes great damage to the electronic components in the circuit and reduces the reliability and service life of the charger; The control chip of traditional chargers has relatively simple functions and can usually only achieve basic voltage or current regulation. It is difficult to accurately control the complex charging process and cannot effectively deal with abnormal conditions such as overvoltage, overcurrent and overtemperature. There are certain safety hazards and it is easy to cause failure or even damage of electronic equipment.

[0003] Chinese patent number CN202222396716.0 discloses a high-efficiency lithium battery charger, but the invention is lacking in control accuracy and conversion efficiency, and the patent is relatively weak in the comprehensiveness and complexity of feedback regulation, and the overall performance needs to be improved.

[0004] In summary, a new technical solution of a high-efficiency charger based on NCP1342 and NV6136C is urgently needed to solve the above technical problems. Summary of the invention

[0005] The purpose of this application is to provide a high-efficiency charger based on NCP1342 and NV6136C to solve the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application discloses the following technical solutions: a high-efficiency charger based on NCP1342 and NV6136C, comprising: an input circuit, an RCD absorption circuit, a control and power conversion circuit, an output circuit and a feedback circuit; The input circuit is used to pre-process the input power and transmit it to subsequent circuits; The RCD absorption circuit is used to absorb peaks and oscillations during power conversion; The control and power conversion circuit is controlled based on the NCP1342 chip and combined with the NV6136C to perform power conversion operations; The output circuit processes the converted electric energy and then outputs it; The feedback circuit collects the output signal and feeds it back to the control and power conversion circuit, and performs output regulation.

[0007] Preferably, the input circuit comprises an NTC thermistor, a fuse and a low-pass filter network consisting of a capacitor and an inductor; wherein the NTC thermistor and the fuse are connected in series at the front end of the input line, and the low-pass filter network is connected after the fuse to filter the input current.

[0008] Preferably, the RCD absorption circuit comprises a capacitor, a plurality of resistors and a diode, and the RCD absorption circuit is connected around the power device of the control and power conversion circuit, and is used to suppress voltage spikes and oscillations during the switching process of the power device.

[0009] Preferably, in the control and power conversion circuit, the NCP1342 chip is connected to the NV6136C; The NCP1342 chip generates a control signal to drive the NV6136C to perform a switching action to convert electric energy, and the NCP1342 chip is used for overvoltage, overcurrent and overtemperature protection.

[0010] Preferably, the control and power conversion circuit further includes a transformer, which is connected to NV6136C and is used for voltage step-up and step-down conversion.

[0011] Preferably, the output circuit includes a diode rectification part and a filtering part; The diode in the diode rectifying part rectifies the converted electric energy; The capacitor in the filtering part filters the rectified electric energy and then outputs it.

[0012] Preferably, the feedback circuit comprises a voltage feedback branch and a current feedback branch; The voltage feedback branch and the current feedback branch respectively collect the output voltage and current signals and feed them back to the NCP1342 chip.

[0013] Preferably, the voltage feedback branch comprises a plurality of resistors and voltage sampling elements, and the plurality of resistors and voltage sampling elements are interconnected to form a voltage sampling network and connected to the NCP1342 chip.

[0014] Preferably, the current feedback branch comprises an operational amplifier, a plurality of resistors, a capacitor and a transistor, which are interconnected to form a current sampling and processing circuit and connected to the NCP1342 chip.

[0015] Preferably, the output circuit further comprises a relay, which is connected after the filtering part and is used to control the output of electric energy.

[0016] Beneficial effects: The high-efficiency charger based on NCP1342 and NV6136C of the present application realizes an efficient, stable and safe charging process by utilizing the coordinated work of the input circuit, RCD absorption circuit, control and power conversion circuit, output circuit and feedback circuit; the input circuit is based on NTC thermistor, fuse and low-pass filter network to ensure the stability and safety of the input power supply; based on the RCD absorption circuit, the peaks and oscillations of power conversion are effectively suppressed to protect the circuit components; based on the control and power conversion circuit, the NCP1342 chip is used to drive the NV6136C, and the transformer is used to realize efficient power conversion and voltage regulation, and its protection function enhances safety; the output circuit ensures the output power quality through diode rectification and capacitor filtering; the feedback circuit accurately adjusts the output to improve the charger performance in all aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A circuit schematic diagram of a high-efficiency charger based on NCP1342 and NV6136C provided in an embodiment of the present application; Figure 2 A circuit schematic diagram of an input circuit provided in an embodiment of the present application; Figure 3 A circuit schematic diagram of an RCD absorption circuit provided in an embodiment of the present application; Figure 4 A circuit schematic diagram of a control and power conversion circuit provided in an embodiment of the present application; Figure 5 A circuit schematic diagram of the step-up and step-down of the control and power conversion circuit provided in the embodiment of the present application; Figure 6 A circuit schematic diagram of a feedback circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0020] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0021] This embodiment discloses Figure 1 A high-efficiency charger based on NCP1342 and NV6136C is shown, comprising: an input circuit, an RCD absorption circuit, a control and power conversion circuit, an output circuit and a feedback circuit; The input circuit is used to pre-process the input power and transmit it to subsequent circuits; The RCD absorption circuit is used to absorb the peaks and oscillations during the power conversion process; The control and power conversion circuit is based on the NCP1342 chip for control and combines with the NV6136C for power conversion operations; The output circuit processes the converted electric energy and then outputs it; The feedback circuit collects the output signal and feeds it back to the control and power conversion circuit to adjust the output.

[0022] Based on the above, this embodiment utilizes the coordinated work of the input circuit, RCD absorption circuit, control and power conversion circuit, output circuit and feedback circuit to achieve an efficient, stable and safe charging process; the input circuit is based on NTC thermistor, fuse and low-pass filter network to ensure the stability and safety of the input power supply; based on the RCD absorption circuit, the peak and oscillation of power conversion are effectively suppressed to protect the circuit components; based on the control and power conversion circuit, the NCP1342 chip drives the NV6136C, and the transformer is used to achieve efficient power conversion and voltage regulation, and its protection function enhances safety; the output circuit ensures the output power quality through diode rectification and capacitor filtering; the feedback circuit accurately adjusts the output to improve the charger performance in all aspects.

[0023] Specifically, the input circuit includes an NTC thermistor, a fuse, and a low-pass filter network composed of a capacitor and an inductor; wherein the NTC thermistor and the fuse are connected in series at the front end of the input line, and the low-pass filter network is connected after the fuse to filter the input current.

[0024] In a specific implementation of this embodiment, Figure 2 As shown, the thermistor NCT1 is connected to the 2nd foot of the input IN and then forms a protection circuit with the fuse F1. The capacitor C0, the capacitor C4, the capacitor C5, the inductor L0 and the inductor L1 form a low-pass filter circuit, which is then rectified by the rectifier bridge and then filtered and output by the electrolytic capacitors C7 and C8.

[0025] Based on the above, this embodiment uses an input circuit composed of an NTC thermistor, a fuse, and a low-pass filter network to achieve effective pre-processing of the input power supply. The NTC thermistor limits the startup current impact, the fuse prevents overcurrent, and the low-pass filter network filters out high-frequency clutter, so that the input current is stable, laying the foundation for the stable operation of the subsequent circuit, reducing the impact of interference, improving the overall circuit reliability, ensuring the normal operation of the charger in a complex power supply environment, reducing the probability of failure, and extending the service life.

[0026] Specifically, the RCD absorption circuit includes a capacitor, multiple resistors and a diode. The RCD absorption circuit is connected around the power device of the control and power conversion circuit. The RCD absorption circuit is used to suppress voltage spikes and oscillations during the switching process of the power device.

[0027] In a specific implementation of this embodiment, Figure 3 As shown, capacitor C50, resistor R140, resistor R144, resistor R148, resistor R141, resistor R145 and diode D21 constitute an RCD absorption circuit, specifically: Pin 1 of transformer T1, one end of resistor R148, one end of resistor R144, one end of resistor R140 and one end of capacitor C50 are all connected to Vbulk, the other ends of resistor R148, the other ends of resistor R144, the other ends of resistor R140 and the other end of capacitor C50 are respectively connected to one end of resistor R141 and one end of resistor R145, the other ends of resistor R141 and the other ends of resistor R145 are both connected to the cathode of diode D21, the anode of diode D21 is connected to pin 3 of transformer T1 after being connected to FB1, and the anode of diode D21 is connected to the voltage feedback loop when being connected to FB1, pin 5 of transformer T1 is suspended, and pin 4 of transformer T1 is connected to one end of capacitor C15.

[0028] Based on the above, this embodiment uses an RCD absorption circuit composed of a capacitor, multiple resistors and a diode to effectively suppress voltage spikes and oscillations during the switching process of the power device. By reasonably connecting around the power device of the control and power conversion circuit, the circuit can absorb and consume excess energy in a timely manner, avoid damage to power devices and other components caused by spikes and oscillations, ensure stable operation of the circuit, reduce the risk of component damage caused by abnormal voltage, and improve the stability and durability of the charger.

[0029] Specifically, in the control and power conversion circuit, the NCP1342 chip is connected to the NV6136C; The NCP1342 chip generates a control signal to drive the NV6136C to perform a switching action to convert electric energy, and the NCP1342 chip is used for overvoltage, overcurrent and overtemperature protection.

[0030] In a specific implementation of this embodiment, Figure 4 As shown in the figure, the control and power conversion circuit is composed of the quasi-resonant flyback chip U8 (NCP1342) and U3 (NV6169 gallium nitride MOS tube) and peripheral circuits, specifically: Pin 1 of U8 is connected to resistor Rt1 and then to SGND, pin 2 of U8 is connected to resistor R48 and then to SGND, pin 3 of U8 is connected to capacitor C29 and then to SGND, pin 4 of U8 is connected to one end of resistor R49 and the cathode of diode D13, the anode of diode D13 is connected to one end of resistor R42 and one end of resistor R41, the other end of resistor R42 is connected to ATH, the other end of resistor R41 is connected to pin 4 of U8 and one end of capacitor C28, the other end of capacitor C28 and the other end of resistor R49 are both connected to GND, pin 5 of U8 and one end of capacitor C31 are both connected to pin 2 of U3, pin 6 of U8 and the other end of capacitor C31 are both connected to SGND, pin 7 of U8 is connected to pin 8 of U3, pin 8 of U8 and pin 27 of U3 are both connected to VCC1, pin 1 of U8 is connected to pin 10 of U3, pin 11 of U8 is connected to pin 12 of U3, pin 13 of U8 is connected to pin 14 of U8 and one end of capacitor C28, the other end of capacitor C28 and the other end of resistor R49 are both connected to GND, pin 14 of U8 is connected to pin 15 of U3 Pin 0 is connected to resistor R50 and then to HV, pins 3 and 28 of U3 are both floating, pin 5V of U3 is connected to one end of capacitor C2, the other end of capacitor C2 and one end of capacitor C1 are both connected to SGND, the other end of capacitor C1 is connected to VCC1, pin 29 of U3 is connected to one end of resistor R51, the other end of resistor R51 and one end of capacitor C32 are both connected to VDD, the other end of capacitor C32 and one end of RSET are both connected to SGND, the other end of RSET is connected to one end of capacitor C31 and pin 2 of U3, pins 15~23 of U3 are all connected to the voltage feedback branch, pin 30 of U3 is connected to VDD, pin 1, pin 7, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 24, pin 25, pin 26, pin 31, pin 6 and pin 4 of U3 are all connected to SGND.

[0031] Based on the above, this embodiment utilizes the connection between the NCP1342 chip and the NV6136C and the functions of the NCP1342 chip to achieve efficient power conversion and multiple protections. The NCP1342 chip generates precise control signals to drive the NV6136C switch action, improving the conversion efficiency. At the same time, its overvoltage, overcurrent and overtemperature protection functions monitor the circuit status in real time, respond quickly when abnormal conditions occur, ensure the safety of the charger and charging equipment, effectively prevent damage caused by electrical faults, and ensure a stable and reliable charging process.

[0032] Specifically, the control and power conversion circuit also includes a transformer, which is connected to NV6136C and is used for voltage step-up and step-down conversion.

[0033] In a specific implementation of this embodiment, Figure 5 As shown, the voltage is stepped up and down by the transformer to the secondary side, and then half-wave rectified by diode D4, filtered by capacitors C20 and C22, and then output is controlled by relay FJ1, specifically: Pin 1 of diode D4, pin 3 of diode D4 and one end of capacitor C19 are all connected to pin 11 of transformer, the other end of capacitor C19, the positive electrode of capacitor C20 and the positive electrode of capacitor C22 are all connected to pin 2 of diode D4, pin 1 of relay FJ1 and one end of R0V1 are connected to the positive electrode of capacitor C22, the other end of R0V1, pin 2 of relay FJ1 and the positive electrode of diode D12 are all connected to one end of resistor R32, the negative electrode of diode D12 is connected to pin 1 of output OUT1, one end of resistor R28, one end of resistor R31 and the collector of transistor Q6 are all connected to the other end of resistor R32. One end is connected, the other end of resistor R28 is connected to the base of transistor Q4, pin 4 of relay FJ1 and the positive electrode of FJD1 are both connected to the collector of transistor Q4, pin 3 of relay FJ1 and the negative electrode of FJD1 are both connected to +12V, the base of transistor Q6 is connected to one end of resistor R36, the other end of resistor R36 is connected to GD, pin 2 of output OUT1, one end of resistor 3 and one end of resistor 2 are all connected to GND2, pin 9 of the transformer, the emitter of transistor Q4, the other end of resistor R31, the emitter of transistor Q6, the other end of resistor 3 and the other end of resistor 2 are all grounded.

[0034] Based on the above, this embodiment uses a transformer connected to NV6136C to achieve flexible voltage conversion. In the control and power conversion circuit, the transformer adapts the voltage according to the charging requirements, so that the charger can meet the charging voltage requirements of different electronic devices, broaden the application range of the charger, optimize the power conversion effect, ensure that the output voltage is stable in a suitable range, and improve the charging efficiency and device compatibility.

[0035] Specifically, the output circuit includes a diode rectification part and a filtering part; The diodes in the diode rectifier section rectify the converted electrical energy; The capacitor in the filter part filters the rectified electric energy and then outputs it.

[0036] Based on the above, this embodiment uses an output circuit including a diode rectifier part and a filter part to achieve effective processing and output of the converted electric energy. The diode rectifier part converts the AC power into DC power, and the capacitor of the filter part further smoothes the voltage and removes the ripple, so that the output electric energy meets the power supply requirements of the electronic equipment, provides a stable and reliable DC power supply, reduces power loss, improves power quality, and ensures the normal operation of the charging equipment.

[0037] Specifically, the feedback circuit includes a voltage feedback branch and a current feedback branch; The voltage feedback branch and the current feedback branch respectively collect the output voltage and current signals and feed them back to the NCP1342 chip.

[0038] In a specific implementation of this embodiment, Figure 6 As shown, R6, U(V), R9, U1 and U2 form a voltage feedback branch to control the output voltage. U4A, R16, R17, R11, R12, C12 and Q2 form a current feedback branch to control the output current.

[0039] Based on the above, this embodiment uses a feedback circuit composed of a voltage feedback branch and a current feedback branch to achieve accurate collection and feedback regulation of the output signal. The voltage feedback branch and the current feedback branch monitor the output voltage and current in real time respectively, and accurately feed back the signal to the NCP1342 chip, so that the chip can adjust the control signal in time according to the feedback information, realize accurate output control, ensure the stability of the charging process, and improve the charging efficiency and safety.

[0040] Specifically, the voltage feedback branch includes a plurality of resistors and voltage sampling elements, and the plurality of resistors and voltage sampling elements are interconnected to form a voltage sampling network and connected to the NCP1342 chip.

[0041] Based on the above, this embodiment uses a voltage feedback branch composed of multiple resistors and voltage sampling elements to achieve accurate sampling and feedback of the output voltage. The voltage sampling network formed by these elements connected to each other can accurately obtain the output voltage information and efficiently transmit it to the NCP1342 chip, providing the chip with reliable voltage data so that it can perform accurate voltage regulation, ensure the stability of the output voltage, and meet the voltage requirements of the charging device.

[0042] Specifically, the current feedback branch includes an operational amplifier, multiple resistors, capacitors and transistors, which are interconnected to form a current sampling and processing circuit and connected to the NCP1342 chip.

[0043] Based on the above, this embodiment uses a current feedback branch composed of an operational amplifier, multiple resistors, capacitors and transistors to achieve effective sampling and processing feedback of the output current. This branch accurately collects the output current signal through the coordinated work of various components, and feeds it back to the NCP1342 chip after processing, so that the chip can adjust the control strategy in time according to the current information, realize constant current or current limiting control, ensure charging safety, and prevent overcurrent from causing damage to the device.

[0044] Specifically, the output circuit further includes a relay, which is connected after the filtering part and is used to control the output of electric energy.

[0045] Based on the above, this embodiment uses the relay connected after the filter part to achieve effective control of the power output. The relay can flexibly control the on and off of the power output according to the circuit state or external control signal, and quickly cut off the output in the event of overcurrent, overvoltage or other abnormal conditions, protect the charging equipment, enhance the safety and reliability of the charger, and ensure a safe and orderly charging process.

[0046] In a specific implementation of this embodiment, the working principle of this embodiment is: After low-pass filtering and bridge rectification, it goes to pins 1 to 3 of transformer T1, where the RCD absorption circuit absorbs the waveform peak oscillation, and then to the D pole of NV6169. The feedback branch feeds back to NCP1342, and then NCP1342 controls the output PWM waveform to control whether NV6169 switches. If it is on, it flows from the S pole to GND, and if it is off, it is open, forming a flyback topology; it comes to the secondary through the step-up and step-down of transformer PQ3230, undergoes half-wave rectification by silicon carbide diode D4, and is filtered by capacitors C20 and C22, and then the output is controlled by relay FJ1.

[0047] In summary, the high-efficiency charger based on NCP1342 and NV6136C in this embodiment realizes an efficient, stable and safe charging process by utilizing the coordinated work of the input circuit, RCD absorption circuit, control and power conversion circuit, output circuit and feedback circuit; the input circuit is based on NTC thermistor, fuse and low-pass filter network to ensure the stability and safety of the input power supply; based on the RCD absorption circuit, the peak and oscillation of power conversion are effectively suppressed to protect the circuit components; based on the control and power conversion circuit, the NCP1342 chip is used to drive the NV6136C, and the transformer is used to realize efficient power conversion and voltage regulation, and its protection function enhances safety; the output circuit ensures the output power quality through diode rectification and capacitor filtering; the feedback circuit accurately adjusts the output to improve the charger performance in all aspects.

[0048] In the embodiments provided in the present application, it should be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code, or any appropriate combination thereof. For hardware implementation, the processor can be implemented in one or more of the following units: an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a processor, a controller, a microcontroller, a microprocessor, other electronic units designed to implement the functions described herein, or a combination thereof. For software implementation, part or all of the processes of the embodiment can be completed by instructing the relevant hardware through a computer program. When implemented, the above program can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein the communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a computer. Computer-readable storage media can include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-efficiency charger based on NCP1342 and NV6136C, characterized in that: include: Input circuit, RCD absorption circuit, control and power conversion circuit, output circuit and feedback circuit; The input circuit is used to pre-process the input power and transmit it to subsequent circuits; The RCD absorption circuit is used to absorb peaks and oscillations during power conversion; The control and power conversion circuit is controlled based on the NCP1342 chip and combined with the NV6136C to perform power conversion operations; The output circuit processes the converted electric energy and then outputs it; The feedback circuit collects the output signal and feeds it back to the control and power conversion circuit, and performs output regulation.

2. The high-efficiency charger based on NCP1342 and NV6136C according to claim 1, characterized in that: The input circuit includes an NTC thermistor, a fuse, and a low-pass filter network composed of a capacitor and an inductor; wherein the NTC thermistor and the fuse are connected in series at the front end of the input line, and the low-pass filter network is connected after the fuse to filter the input current.

3. The high-efficiency charger based on NCP1342 and NV6136C according to claim 2, characterized in that: The RCD absorption circuit includes a capacitor, multiple resistors and a diode. The RCD absorption circuit is connected around the power device of the control and power conversion circuit. The RCD absorption circuit is used to suppress voltage spikes and oscillations during the switching process of the power device.

4. The high-efficiency charger based on NCP1342 and NV6136C according to claim 1, characterized in that: In the control and power conversion circuit, the NCP1342 chip is connected to the NV6136C; The NCP1342 chip generates a control signal to drive the NV6136C to perform a switching action to convert electric energy, and the NCP1342 chip is used for overvoltage, overcurrent and overtemperature protection.

5. The high-efficiency charger based on NCP1342 and NV6136C according to claim 4, characterized in that: The control and power conversion circuit also includes a transformer, which is connected to NV6136C and is used for voltage step-up and step-down conversion.

6. The high-efficiency charger based on NCP1342 and NV6136C according to claim 1, characterized in that: The output circuit includes a diode rectification part and a filtering part; The diode in the diode rectifying part rectifies the converted electric energy; The capacitor in the filtering part filters the rectified electric energy and then outputs it.

7. The high-efficiency charger based on NCP1342 and NV6136C according to claim 1, characterized in that: The feedback circuit includes a voltage feedback branch and a current feedback branch; The voltage feedback branch and the current feedback branch respectively collect the output voltage and current signals and feed them back to the NCP1342 chip.

8. The high-efficiency charger based on NCP1342 and NV6136C according to claim 7, characterized in that: The voltage feedback branch includes a plurality of resistors and voltage sampling elements, and the plurality of resistors and voltage sampling elements are interconnected to form a voltage sampling network and connected to the NCP1342 chip.

9. The high-efficiency charger based on NCP1342 and NV6136C according to claim 7, characterized in that: The current feedback branch includes an operational amplifier, multiple resistors, capacitors and transistors, which are interconnected to form a current sampling and processing circuit and connected to the NCP1342 chip.

10. The high-efficiency charger based on NCP1342 and NV6136C according to claim 6, characterized in that: The output circuit further comprises a relay, which is connected after the filtering part and is used for controlling the output of electric energy.

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