CN217824728U - Power module and charger - Google Patents

Power module and charger Download PDF

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Publication number
CN217824728U
CN217824728U CN202221662399.6U CN202221662399U CN217824728U CN 217824728 U CN217824728 U CN 217824728U CN 202221662399 U CN202221662399 U CN 202221662399U CN 217824728 U CN217824728 U CN 217824728U
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module
power
electrically connected
tube
main control
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Chinese (zh)
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潘秋雄
王利佳
李锦就
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Shenzhen Taigao Technology Co ltd
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Shenzhen Taigao Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The utility model provides a power module and charger, power module includes: the device comprises a rectification module, a main control module, an output sampling module, a PFC power module, an LLC power module and a voltage stabilizing module; the rectification module is respectively and electrically connected with the main control module, the PFC power module and a power supply input end; the main control module is also electrically connected with the PFC power module and the output sampling module respectively; the output sampling module is electrically connected with the voltage stabilizing module; the LLC power module comprises a first power tube and a second power tube, the first power tube is respectively and electrically connected with the main control module, the voltage stabilizing module, the PFC power module and the second power tube, the second power tube is also respectively and electrically connected with the main control module and the voltage stabilizing module, and the first power tube and the second power tube are both gallium nitride transistors with a first preset specification. The utility model discloses can reduce the volume, can improve charge efficiency and electric energy utilization simultaneously.

Description

Power module and charger
Technical Field
The utility model belongs to the technical field of power supply circuit, especially, relate to a power module and charger.
Background
Some power module circuits in the prior art have the defects of large volume, difficulty in miniaturization, occupation of more space, inconvenience in carrying, low charging efficiency, high power consumption and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power module aims at solving current power module and has bulky, and charging efficiency is low, the big scheduling problem of consumption.
The utility model discloses a realize like this, provide a power module, include: the device comprises a rectification module, a main control module, an output sampling module, a PFC power module, an LLC power module and a voltage stabilizing module;
the rectification module is respectively and electrically connected with the main control module, the PFC power module and a power supply input end;
the main control module is also electrically connected with the PFC power module and the output sampling module respectively;
the output sampling module is electrically connected with the voltage stabilizing module;
the LLC power module comprises a first power tube and a second power tube, the first power tube is respectively and electrically connected with the main control module, the voltage stabilizing module, the PFC power module and the second power tube, the second power tube is also respectively and electrically connected with the main control module and the voltage stabilizing module, and the first power tube and the second power tube are both gallium nitride transistors with a first preset specification.
Furthermore, the PFC power module includes a third power tube and a fourth power tube, the third power tube is electrically connected to the rectifier module, the main control module and the fourth power tube, respectively, and the fourth power tube is also electrically connected to the main control module and the second power tube, respectively.
Furthermore, the third power transistor and the fourth power transistor are both gallium nitride transistors with a second predetermined specification.
Furthermore, the PFC power module further comprises a first inductor, a second inductor, a first diode and a second diode, wherein one end of the first inductor is electrically connected with the rectification module, the other end of the first inductor is respectively electrically connected with one end of the second inductor and the anode of the first diode, the other end of the second inductor is respectively electrically connected with the anode of the second diode, the third power tube and the fourth power tube, and the cathode of the first diode is electrically connected with the cathode of the second diode and the first power tube.
Furthermore, the voltage stabilizing module comprises a transformer, a first switch tube, a second switch tube and a synchronous rectifier controller, wherein a primary input end of the transformer is electrically connected with the first power tube, the second power tube and the main control module respectively, a secondary output end of the transformer is electrically connected with the synchronous rectifier controller, the first switch tube and the second switch tube respectively, and the first switch tube and the second switch tube are electrically connected with the synchronous rectifier controller respectively.
Furthermore, the primary input end of the transformer is provided with a plurality of groups of coils.
Further, the output sampling module includes: the input end of the optical coupling element is respectively electrically connected with the voltage stabilizing module and the negative electrode of the third diode, the output end of the optical coupling element is electrically connected with the main control module, and the positive electrode of the third diode is electrically connected with the voltage stabilizing module.
Furthermore, the main control module comprises a combined controller and a signal enhancement element, the combined controller is electrically connected with the signal enhancement element, the combined controller is also electrically connected with the rectification module, the PFC power module, the first power tube, the second power tube and the output sampling module respectively, and the signal enhancement element is also electrically connected with the third power tube.
Furthermore, the rectifier module includes rectifier bridge, first common mode inductance, electric capacity, second common mode inductance, piezo-resistor, thermistor and fuse, the one end of fuse is connected with the negative pole electricity of power input end, the other end of fuse with the one end electricity of thermistor is connected, the other end of thermistor with the piezo-resistor electricity is connected, the one end of piezo-resistor and the positive pole electricity of power input end are connected, the electric capacity with first common mode inductance is parallelly connected, second common mode inductance with the electric capacity is parallelly connected, second common mode inductance with the rectifier bridge is parallelly connected, the rectifier bridge with PFC power module electricity is connected.
The embodiment of the utility model provides a still provide a charger, including above-mentioned embodiment power module.
The utility model discloses the beneficial effect who reaches: the PWM signal is sent by the main control module to control the switching frequency, the power factor correction is realized by the PFC power module, meanwhile, the LLC power module formed by the first power tube and the second power tube reduces the EMI (electromagnetic interference) effect generated by the circuit, and the first power tube and the second power tube are both gallium nitride transistors with a first preset specification, so that the performance is better, and the volume is smaller. And then the output ripple signals are collected by the voltage stabilizing module to adjust the output frequency of PWM, so that the current phase and the voltage phase are consistent as much as possible, and the power factor of the PWM is close to 100% as much as possible. To achieve higher power utilization. And finally, acquiring the output frequency through the output sampling module, providing a corresponding frequency signal for the main control module, and controlling the working frequency of the LLC power module through the main control module so as to reduce the EMI effect generated by the circuit. Therefore, the size is reduced, and meanwhile, the charging efficiency and the electric energy utilization rate of the power supply module are improved.
Drawings
Fig. 1 is a schematic block diagram of a power module according to the present invention;
fig. 2 is a circuit diagram of an LLC power module provided by the present invention;
fig. 3 is a circuit diagram of a PFC power module provided by the present invention;
fig. 4 is a circuit diagram of the voltage stabilizing module provided by the present invention;
fig. 5 is a circuit diagram of an output sampling module provided by the present invention;
fig. 6 is a circuit diagram of a main control module provided by the present invention;
fig. 7 is a circuit diagram of a rectifier module provided by the present invention.
In the figure, 1, a rectifying module; 2. a main control module; 3. an output sampling module; 4. a PFC power module; 5. An LLC power module; 6. and a voltage stabilizing module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic block diagram of a power module according to the present invention.
The power module is a 240W power module, and the power module comprises: the device comprises a rectification module 1, a main control module 2, an output sampling module 3, a PFC power module 4, an LLC power module 5 and a voltage stabilizing module 6. The rectification module 1 is electrically connected with the main control module 2, the PFC power module 4 and a power input end respectively. The main control module 2 is also electrically connected with the PFC power module 4 and the output sampling module 3, respectively. The output sampling module 3 is electrically connected with the voltage stabilizing module 6.
As shown in fig. 2, the LLC power module 5 includes a first power tube Q1 and a second power tube Q2, the first power tube Q1 is electrically connected to the main control module 2, the voltage regulation module 6, the fourth power tube Q4 and the second power tube Q2, respectively, and the second power tube Q2 is also electrically connected to the main control module 2 and the voltage regulation module 6, respectively. Specifically, the first power tube Q1 and the second power tube Q2 form an LLC power circuit (resonant circuit) of the power supply module, thereby reducing EMI (electromagnetic interference) effects generated by the circuit.
In an embodiment of the present invention, the first power transistor Q1 and the second power transistor Q2 are both gallium nitride transistors with a first predetermined specification. The gallium nitride transistor has small volume, and can obviously reduce the volume of the power module. The first predetermined specification gallium nitride transistor may be a TP44200NM gallium nitride transistor, a TP44X00SG gallium nitride transistor, or the like.
Specifically, the specific model of the first power tube Q1 is TP44100SG, wherein the TP44100SG has an internal resistance of 90m Ω, and the maximum current can reach 13.5 A. Pins 1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, and 22 of the first power tube Q1 are electrically connected. The 11 th pin (NC 11) of the first power transistor Q1 is electrically connected to the 21 st pin (DRAIN) of the second power transistor Q2. The 5 th pin of the first power tube Q1 is electrically connected with the 9 th pin (GATEHS) of the combined controller U1 after being connected in series with the capacitor C6 and the resistor R14 through the resistor R15. The pin 6 of the first power tube Q1 is electrically connected with the pin 5 of the first power tube Q1 through a series resistor R15A, and the zener diode DZ2 is connected in parallel with the resistor R15A. The 11 th pin of the first power tube Q1 is also electrically connected to the primary input terminal of the transformer T1 of the voltage stabilizing module 6.
The specific model of the second power tube Q2 is TP44100SG, and pins 1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 and 22 of the second power tube Q2 are electrically connected. The 5 th pin of the second power tube Q2 is connected with the resistor R16 in parallel with the capacitor C7, and then is connected with the resistor R17 in series and then electrically connected with the 6 th pin (GATELS) of the combined controller U1. The 6 th pin of the second power tube Q2 is connected in series with the resistor R15A1, then connected in parallel with the zener diode DZ3, and then electrically connected with the 5 th pin of the second power tube Q2. The 21 st pin (DRAIN) of the second power transistor Q2 is also electrically connected to the primary input terminal of the transformer T1 of the voltage stabilizing module 6.
Specifically, the main control module 2 sends a PWM signal to control the switching frequency, the PFC power module 4 corrects the power factor, and the LLC power module 5 composed of the first power tube Q1 and the second power tube Q2 reduces the EMI (electromagnetic interference) effect generated by the circuit, and the first power tube Q1 and the second power tube Q2 are both gallium nitride transistors of a first predetermined specification, which results in better performance and smaller size. Then, the output ripple signal is collected by the voltage stabilizing module 6 to adjust the output frequency of the PWM, so that the current phase and the voltage phase are as consistent as possible, and the power factor is as close to 100% as possible. To obtain a higher power utilization. And finally, after the output frequency is collected by the output sampling module 3, a corresponding frequency signal is provided for the main control module 2, and the working frequency of the LLC power module 5 is controlled by the main control module 2 so as to reduce the EMI effect generated by the circuit. Therefore, the size is reduced, and meanwhile, the charging efficiency and the electric energy utilization rate of the power supply module are improved.
In the embodiment of the present invention, as shown in fig. 3, the PFC power module 4 includes a third power tube Q3 and a fourth power tube Q4, the third power tube Q3 respectively with the rectifier module 1, the main control module 2 and the fourth power tube Q4 are electrically connected, the fourth power tube Q4 further respectively with the main control module 2 and the second power tube Q2 is electrically connected. Specifically, a PLC power circuit (power factor correction circuit) of the power module is formed by the third power tube Q3 and the fourth power tube Q4, so as to realize power factor correction. The power factor is made to be as close to 100% as possible (also called conversion efficiency, the closer the value is to 100%, the higher the efficiency), and the higher and more synchronous frequency is, so that the THD is reduced and the higher electric energy utilization rate is obtained.
In an embodiment of the present invention, the third power transistor Q3 and the fourth power transistor Q4 are gallium nitride transistors of a second predetermined specification. The gallium nitride transistor has small volume, and can obviously reduce the volume of the power module. The gallium nitride transistor of the second predetermined specification may be a TP44200NM gallium nitride transistor, a TP44X00SG gallium nitride transistor, or the like. It should be noted that the gallium nitride transistor of the first predetermined specification and the gallium nitride transistor of the second predetermined specification may be the same, or may be different.
Specifically, the specific model of the third power tube Q3 is TP44X00SG. The 1 st, 2 nd, 3 th and 4 th pins of the third power tube Q3 are all electrically connected with the 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 15 th, 16 th, 17 th, 18 th, 19 th, 20 th and 22 th pins thereof. The 5 th Pin (PWM) of the third power transistor Q3 is electrically connected to the 6 th pin (OUT) of the signal enhancement element U2 in the main control module 2 through the resistor R57, the resistor R6, the capacitor C2, and the resistor R8. Wherein, the resistor R7 is connected with the resistor R6 in series. The capacitor C2 is connected in parallel with the resistor R6. The 6 th (ZA) pin of the third power transistor Q3 is electrically connected to the 6 th (ZA) pin of the fourth power transistor Q4 through a resistor R9 and a parallel resistor R11.
The specific models of the fourth power tube Q4 are all TP44X00SG, and the 1 st, 2 nd, 3 th and 4 th pins of the fourth power tube Q4 are all electrically connected with the 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 15 th, 16 th, 17 th, 18 th, 19 th, 20 th and 22 th pins of the fourth power tube Q4. The 5 th Pin (PWM) of the fourth power transistor Q4 is electrically connected to the 5 th Pin (PWM) of the third power transistor Q3 through a resistor R10 and a resistor R7, and is configured to transmit a PWM signal. And a 10 th pin of the fourth power tube Q4 is electrically connected with a 3 rd pin of the combined controller U1 after being connected with a resistor R13 through a resistor R12.
In the embodiment of the present invention, as shown in fig. 3, the PFC power module 4 further includes a first inductor L1, a second inductor L2, a first diode D1, and a second diode D2, wherein one end of the first inductor L1 is electrically connected to the rectifier module 1, the other end of the first inductor L1 is electrically connected to one end of the second inductor L2 and the anode of the first diode D1, the other end of the second inductor L2 is electrically connected to the anode of the second diode D2, the third power tube Q3 and the fourth power tube Q4, and the cathode of the first diode D1 is electrically connected to the cathode of the second diode D2 and the LLC power module 5. Wherein, the parameters of the second inductor L2 are: the lowest input voltage is 100VAC:22V 10A 190uH. Specifically, the 21 st pin (DRAIN) of the third power tube Q3 and the 21 st pin (DRAIN) of the fourth power tube Q4 are both electrically connected to the connection line between the second inductor L2 and the second diode D2.
In the embodiment of the present invention, as shown in fig. 4, the voltage stabilizing module 6 includes a transformer T1, a first switch tube Q5, a second switch tube Q6 and a synchronous rectifier controller U3, the primary input end of the transformer T1 respectively with the first power tube Q1, the second power tube Q2 and the main control module are electrically connected, the secondary output end of the transformer T1 respectively with the synchronous rectifier controller U3, the first switch tube Q5 and the second switch tube Q6 are electrically connected, the first switch tube Q5 and the second switch tube Q6 respectively with the synchronous rectifier controller U3 is electrically connected. The primary input end of the transformer T1 is provided with a plurality of groups of coils. Wherein, the transformer T1 is a 240W transformer.
Specifically, the specific model of the transformer T1 is T-ATQ27 (5+0), and the 1 st pin of the first group of coils at the primary input end of the transformer T1 is electrically connected to the 11 th pin of the first power tube Q1 and the 21 st pin of the second power tube Q2, respectively. And the 2 nd pin of the first group of coils at the primary input end of the transformer T1 is electrically connected with the 14 th pin of the combined controller U1 after being connected with a resistor R19 in series through a resistor R20. The resistor R20 and the resistor R19 are also connected in parallel with the capacitor C9. The second group of coils (pin 4) at the primary input end of the transformer T1 is electrically connected with the pin 13 of the combined controller U1. The second set of windings (pin 5) at the primary input of the transformer T1 is electrically connected to PGND. The pin a of the secondary output end of the transformer T1 is electrically connected to the drain of the first switching tube Q5. And a pin B of the secondary output end of the transformer T1 is electrically connected with a pin 7 of the synchronous rectifier controller U3. And a pin D of the secondary output end of the transformer T1 is electrically connected with a drain electrode of the second switching tube Q6. The pin A of the secondary output end of the transformer T1 is also electrically connected with the pin 3 of the synchronous rectifier controller U3. The pin D of the secondary output end of the transformer T1 is also electrically connected with the pin 6 of the synchronous rectifier controller U3.
The source of the first switch Q5 is electrically connected to the drain of the first switch Q5 through a capacitor C22 connected in series with a resistor R28, and the source of the first switch Q5 is also electrically connected to pins 4 and 5 of the synchronous rectifier controller U3. The grid electrode of the first switch tube Q5 is electrically connected with the 1 st pin of the synchronous rectifier controller U3. The source of the second switch tube Q6 is electrically connected to the drain of the second switch tube Q6 after being connected in parallel with the resistor R29 through the capacitor C23. The gate of the second switching tube Q6 is electrically connected to the 8 th pin of the synchronous rectifier controller U3.
In the embodiment of the present invention, as shown in fig. 5, the output sampling module 3 includes: the input end of the optical coupling element U4 is respectively electrically connected with the voltage stabilizing module 6 and the negative electrode of the third diode, the output end of the optical coupling element U4 is electrically connected with the main control module 2, and the positive electrode of the third diode is electrically connected with the voltage stabilizing module 6. After the third diode collects the output frequency of the voltage stabilizing module 6, the work of the optical coupling element U4 is controlled, and the optical coupling element U4 provides a corresponding frequency signal for the main control module.
In the embodiment of the present invention, as shown in fig. 6, the main control module 2 includes a combined controller U1 and a signal enhancement element U2, the combined controller U1 and the signal enhancement element U2 are electrically connected, the combined controller U1 further respectively with the rectifier module 1 the PFC power module 4 the first power tube Q1, the second power tube Q2 and the output sampling module 3 are electrically connected, the signal enhancement element U2 further electrically connected with the third power tube Q3. The combined controller U1 is a power factor correction and resonance (PFC + LLC Combo) two-in-one chip. The specific model of the combined controller U1 is TEA2016AAT. TEA2016AAT is a piece of digital configurable LLC and PFC combination controller for efficient resonant power supplies. The PWM signal is sent by the combined controller U1, and the signal enhancement element U2 enhances the PWM signal, so that the switching frequency is controlled.
In the embodiment of the present invention, the rectifier module 1 includes rectifier bridge BD1, first common mode inductance FL1, electric capacity CX1, second common mode inductance FL2, piezo-resistor RV1, fuse NTC1 and fuse F1, the one end of fuse F1 is connected with the negative pole ACN of power input end electricity, the other end of fuse F1 with the one end of fuse NTC1 is connected electrically, the other end of fuse NTC1 with piezo-resistor RV1 is connected electrically, one end of piezo-resistor RV1 is connected with the positive ACL of power input end electricity electrically, electric capacity CX1 with first common mode inductance FL1 is parallelly connected, second common mode inductance FL2 with electric capacity CX1 is parallelly connected, second common mode inductance FL2 with rectifier bridge BD1 is parallelly connected, rectifier bridge BD1 with PFC power module 4 electricity is connected. The first common mode inductor FL1, which may be of the type T18 × 10 × 7, is a device for eliminating interference noise, and filters an input or an output to obtain a pure dc power. The circuit for filtering the frequency points of the specific frequency or the frequencies except the frequency points is a filter, and the function of the circuit is to obtain the specific frequency or eliminate the specific frequency. A specific model of the second common mode inductance FL1 may be T10 x 6*5. Specifically, the power supply is converted into a stable power supply input signal through the rectifier module 1, so that the power supply stability of the whole circuit is ensured.
In the embodiment of the present invention, the signal enhancement element U2 is sent a PWM signal through the combination controller U1, the signal enhancement element U2 enhances the PWM signal, thereby controlling the switching frequency, and simultaneously collecting the output ripple information of the synchronous rectifier controller U3 and the optocoupler element U4 at the secondary output end of the transformer T1, and adjusting the frequency signal of PWM, so that the current phase and the voltage phase are as consistent as possible, and the power factor is as close as possible to 100% (also called conversion efficiency, the closer the value is to 100%, the higher the efficiency is), because the frequency is higher and more synchronous, thereby reducing the THD, and obtaining a higher electric energy utilization rate; after the output frequency of the transformer T1 is collected by the third diode U5, the work of the optical coupling element U4 is controlled, the optical coupling element U4 is enabled to provide corresponding frequency signals for the combined controller U1, the working frequencies of the first power tube Q1 and the second power tube Q2 are adjusted after the combined controller U1 receives the signals, the EMI (electro-magnetic interference) effect generated by the circuit is reduced, the combined controller U1 controls the working of the first power tube Q1 and the second power tube Q2, thereby controlling the frequency of the main side of the transformer T1, the output of the auxiliary side of the transformer T1 is realized, the first switch tube Q5 and the second switch tube Q6 are switched, rectified and output, and the advantages of high efficiency, high power density and the like are realized. Meanwhile, the gallium nitride transistors are used as power tubes (the third power tube Q3, the fourth power tube Q4, the first power tube Q1 and the second power tube Q2 are all gallium nitride transistors with preset specifications), alternating current/direct current (AC/DC) conversion of the gallium nitride charger is controlled by the main control circuit, the performance is better, the gallium nitride transistors are small in size, and the size of a power module can be remarkably reduced. The efficiency of the gallium nitride product on the market is about 90-93%, the power module can reach 95.5%, and the volume is reduced to 70 x 46 x 31.5mm 3 The power density is more than 2W/CC and the power is 240W. And then improve power module's charge efficiency, electric energy utilization and reduce power module's volume.
The embodiment of the utility model provides a still provide a charger, including above-mentioned embodiment power module.
The embodiment of the utility model provides an in, through the volume that improves power module's charge efficiency, electric energy utilization and reduce power module, and then improve charge efficiency, electric energy utilization and the reduction charger of charger.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A power module, comprising: the device comprises a rectification module, a main control module, an output sampling module, a PFC power module, an LLC power module and a voltage stabilizing module;
the rectification module is respectively and electrically connected with the main control module, the PFC power module and a power supply input end;
the main control module is also electrically connected with the PFC power module and the output sampling module respectively;
the output sampling module is electrically connected with the voltage stabilizing module;
the LLC power module comprises a first power tube and a second power tube, the first power tube is respectively and electrically connected with the main control module, the voltage stabilizing module, the PFC power module and the second power tube, the second power tube is also respectively and electrically connected with the main control module and the voltage stabilizing module, and the first power tube and the second power tube are both gallium nitride transistors with a first preset specification.
2. The power supply module of claim 1, wherein the PFC power module comprises a third power tube and a fourth power tube, the third power tube is electrically connected to the rectifying module, the main control module and the fourth power tube, and the fourth power tube is further electrically connected to the main control module and the second power tube.
3. The power supply module of claim 2, wherein the third power transistor and the fourth power transistor are both gallium nitride transistors of a second predetermined specification.
4. The power module of claim 2, wherein the PFC power module further comprises a first inductor, a second inductor, a first diode, and a second diode, wherein one end of the first inductor is electrically connected to the rectifying module, the other end of the first inductor is electrically connected to one end of the second inductor and the anode of the first diode, respectively, the other end of the second inductor is electrically connected to the anode of the second diode, the third power tube, and the fourth power tube, respectively, and the cathode of the first diode is electrically connected to the cathode of the second diode and the first power tube.
5. The power module of claim 1, wherein the voltage stabilizing module comprises a transformer, a first switch tube, a second switch tube and a synchronous rectifier controller, a primary input end of the transformer is electrically connected to the first power tube, the second power tube and the main control module, a secondary output end of the transformer is electrically connected to the synchronous rectifier controller, the first switch tube and the second switch tube, and the first switch tube and the second switch tube are electrically connected to the synchronous rectifier controller.
6. A power supply module as claimed in claim 5, characterised in that the primary input of the transformer is provided with a plurality of sets of windings.
7. The power module of claim 1, wherein the output sampling module comprises: the input end of the optical coupling element is respectively electrically connected with the voltage stabilizing module and the negative electrode of the third diode, the output end of the optical coupling element is electrically connected with the main control module, and the positive electrode of the third diode is electrically connected with the voltage stabilizing module.
8. The power module of claim 2, wherein the main control module comprises a combined controller and a signal enhancement element, the combined controller is electrically connected to the signal enhancement element, the combined controller is further electrically connected to the rectifying module, the PFC power module, the first power transistor, the second power transistor and the output sampling module, respectively, and the signal enhancement element is further electrically connected to the third power transistor.
9. The power module of claim 1, wherein the rectifier module comprises a rectifier bridge, a first common mode inductor, a capacitor, a second common mode inductor, a voltage dependent resistor, a thermistor, and a fuse, wherein one end of the fuse is electrically connected to a negative terminal of the power input terminal, the other end of the fuse is electrically connected to one end of the thermistor, the other end of the thermistor is electrically connected to the voltage dependent resistor, one end of the voltage dependent resistor is electrically connected to a positive terminal of the power input terminal, the capacitor is connected in parallel to the first common mode inductor, the second common mode inductor is connected in parallel to the capacitor, the second common mode inductor is connected in parallel to the rectifier bridge, and the rectifier bridge is electrically connected to the PFC power module.
10. A charger, characterized by comprising the power supply module of any one of claims 1-9.
CN202221662399.6U 2022-06-29 2022-06-29 Power module and charger Active CN217824728U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221662399.6U CN217824728U (en) 2022-06-29 2022-06-29 Power module and charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221662399.6U CN217824728U (en) 2022-06-29 2022-06-29 Power module and charger

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CN217824728U true CN217824728U (en) 2022-11-15

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