CN219499229U - GaN-based power adapter circuit - Google Patents
GaN-based power adapter circuit Download PDFInfo
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- CN219499229U CN219499229U CN202320663202.9U CN202320663202U CN219499229U CN 219499229 U CN219499229 U CN 219499229U CN 202320663202 U CN202320663202 U CN 202320663202U CN 219499229 U CN219499229 U CN 219499229U
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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
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Abstract
The utility model discloses a GaN-based power adapter circuit which comprises an input rectifying and filtering module, a CX2006 circuit module, a main control power supply circuit module, a capacitor isolation module, a protocol identification output circuit module, an RCD absorption circuit module, a transformer circuit module, a synchronous rectifier module and a GaNMOSFET switch circuit module, wherein the input rectifying and filtering module is connected with the RCD absorption circuit module, the RCD absorption circuit module is respectively connected with the transformer circuit module and the GaNMOSFET switch circuit module, the transformer circuit module is connected with the synchronous rectifier module, the synchronous rectifier module is connected with the protocol identification output circuit module, the GaNMOSFET switch circuit module is connected with the CX2006 circuit module, and the CX2006 circuit module is connected with the main control power supply circuit module. By using the utility model, the safety of the charging IC can be effectively protected and the service life of the battery can be prolonged. The GaN-based power adapter circuit can be widely applied to the technical field of power adapters.
Description
Technical Field
The utility model relates to the technical field of power adapters, in particular to a GaN-based power adapter circuit.
Background
The switching power supply is the most basic and core part of the modern electric energy conversion technology, and the control mode is to maintain stable output voltage and output current by controlling the time proportion of the on-off of the MOSFET, and can be divided into an alternating current-direct current converter, a direct current-direct current converter and the like. The power supply for providing direct current for mobile equipment is an optimal solution scheme for various mobile equipment, and along with the development of an electronic equipment adapter, the requirements for the switching power supply become more severe, wherein high efficiency and miniaturization are the necessary development trend, and compared with the germanium-based materials which occur in early days, the silicon-based materials have the characteristics of low cost, high reliability, strong ductility and the like. These advantages benefit from the physical properties of the silicon-based material itself, but with the development of years, silicon-based material MOSFETs appear to have reached a bottleneck, and the desire to increase the output power means to increase the switching power supply volume, which is not friendly for daily portability.
Disclosure of Invention
In order to solve the technical problems, an object of the present utility model is to provide a GaN-based power adapter circuit capable of effectively protecting the safety of a charging IC and prolonging the battery life.
The first technical scheme adopted by the utility model is as follows: the device comprises an input rectifying and filtering module, a CX2006 circuit module, a main control power supply circuit module, a capacitance isolation module, a protocol identification output circuit module, an RCD absorption circuit module, a transformer circuit module, a synchronous rectifier module and a GaNMOSFET switch circuit module, wherein the input rectifying and filtering module is connected with the RCD absorption circuit module, the RCD absorption circuit module is respectively connected with the transformer circuit module and the GaNMOSFET switch circuit module, the transformer circuit module is connected with the synchronous rectifier module, the synchronous rectifier module is connected with the protocol identification output circuit module, the GaNMOSFET switch circuit module is connected with the CX2006 circuit module, and the CX2006 circuit module is connected with the main control power supply circuit module.
Further, the input rectifying and filtering module comprises a fuse F1, a common-mode inductor LF1, a rectifying bridge BD1, a polarity capacitor EC2, an inductor L1 and an inductor L2, wherein a first end of the fuse F1 is connected with a power live wire, a second end of the fuse F1 is connected with a fourth pin of the common-mode inductor LF1, a first pin of the common-mode inductor LF1 is connected with a power zero line, a second pin of the common-mode inductor LF1 is connected with a first pin of the rectifying bridge BD1, a third pin of the common-mode inductor LF1 is connected with a second pin of the rectifying bridge BD1, a fourth pin of the rectifying bridge BD1, a negative end of the polarity capacitor EC1 and a first end of the inductor L2 are connected, a second end of the inductor L1 is connected with a positive end of the polarity capacitor EC2, and a second end of the inductor L2 is connected with a negative end of the polarity capacitor EC2 in parallel.
Further, the main control power supply circuit module comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, an inductor L3, a diode D1, a diode D2 and a MOS tube Q1, wherein the first end of the inductor L3 is connected with the positive end of the diode D1, the negative end of the diode D1 is connected with the first end of the resistor R1, the second end of the resistor R1, the first end of the capacitor C1, the source of the MOS tube Q1 and the negative end of the diode D2 are connected, the gate of the MOS tube Q1, the second end of the capacitor C1 and the second end of the capacitor C2 are connected with each other and grounded, the drain of the MOS tube Q1, the first end of the capacitor C2 and the second end of the resistor R4 are connected with the second end of the resistor R2, the first end of the resistor R3 and the second end of the inductor L1 are connected with each other, and the second end of the resistor R3 and the second end of the resistor L3 are connected with each other with the ground.
Further, the CX2006 circuit module includes electric capacity C4, electric capacity C5, electric capacity C6, photocoupler OC1 and CX2006 chip U1, CX2006 chip U1's first pin ground connection, CX2006 chip U1's second pin, photocoupler OC 1's collecting electrode and electric capacity C5's first end link to each other, CX2006 chip U1's third pin, electric capacity C4's first end and diode D2's positive pole end link to each other, electric capacity C4's second end, photocoupler OC 1's projecting pole and electric capacity C5's second end link to each other and ground connection, CX2006 chip U1's fourth pin, electric capacity C6's first end and resistance R5's second end link to each other, CX2006 chip U1's fifth pin is connected with electric capacity C3's first end, CX2006 chip U1's sixth pin is connected with GaN MOSFET switch circuit module's negative pole end, electric capacity C6's second termination ground connection.
Further, the protocol identification output circuit module comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C9, an EL1019 optocoupler OC2, an L432 voltage regulator U3, a flat cable J1 and a CX2965CDP33 chip U2, wherein a first pin of the CX2965CDP33 chip U2, a first end of the resistor R6, a first end of the resistor R7 and a fourth pin of a CX7538D chip U4 of the synchronous rectifier module are connected, a second pin of the CX2965CDP33 chip U2 is connected with a second end of the capacitor C8, a third pin of the CX2965CDP33 chip U2 is connected with a first end of the resistor R12, a fourth pin of the CX2965CDP33 chip U2 is connected with an eighth pin of the flat cable J1, a fifth pin of the CX2965CDP33 chip U2 is connected with a seventh pin of the flat cable J1, a third pin of the CX2965CDP33 chip U2 is connected with a sixth pin of the CX2965CDP33 chip U2 is connected with a seventh pin of the flat cable J1, the eighth pin of CX2965CDP33 chip U2, the second pin of winding displacement J1 and the second end of electric capacity C9 link to each other, the ninth pin of CX2965CDP33 chip U2, the second end of resistance R11 and the second pin of L432 stabiliser U3 link to each other and ground, the second end of resistance R6, the positive terminal of EL1019 opto-coupler OC2 and the first end of resistance R8 link to each other, the second end of resistance R8, the negative terminal of EL1019 opto-coupler OC2, the first end of resistance R10 and the first pin of L432 stabiliser U3 link to each other, the second end of resistance R10 is connected with the first end of electric capacity C8, the second end of resistance R7 is connected with the first end of resistance R9, the third pin of L432 stabiliser U3 and the first end of resistance R11 link to each other, the first end of electric capacity C9 is connected with the first pin of winding displacement J1 and ground, the second end of resistance R12 is connected with the first pin of winding displacement J1 and ground.
Further, the RCD snubber circuit module includes a resistor R13, a resistor R14, a resistor R15, a capacitor C10, and a diode D3, where a first end of the capacitor C10, a first end of the resistor R14, and an anode end of a polar capacitor EC2 input to the rectifying and filtering module are connected, a second end of the capacitor C10 is connected to the first end of the resistor R13, a second end of the resistor R14 is connected to the first end of the resistor R15, a second end of the resistor R13 is connected to a cathode end of the diode D3, and a positive end of the diode D3, a second end of the resistor R15, and a second pin of a common mode inductance LF2 of the transformer circuit module are connected.
Further, the transformer circuit module includes common mode inductance LF2 and polarity electric capacity EC3, the first pin of common mode inductance LF2 is connected with the positive terminal of the polarity electric capacity EC2 of input rectification filter module, the W pin of common mode inductance LF2 is connected with the fifth pin of CX7538D chip U4 of synchronous rectifier module, the B pin of common mode inductance LF2, the positive terminal of polarity electric capacity EC3 and the fourth pin of CX7538D chip U4 of synchronous rectifier module link to each other, the negative terminal of polarity electric capacity EC3 ground connection.
Further, the synchronous rectifier module includes electric capacity C11, electric capacity C12, resistance R16 and CX7538D chip U4, the fifth pin of CX7538D chip U4, the sixth pin of CX7538D chip U4, the seventh pin of CX7538D chip U4, the eighth pin of CX7538D chip U4 and the first end of electric capacity C11 link to each other, the first pin of CX7538D chip U4, the second pin of CX7538D chip U4 and the second end of resistance R16 link to each other and ground, the second end of electric capacity C11 is connected with the first end of resistance R16, the third pin of CX7538D chip U4 is connected with the first end of electric capacity C12, the second end ground connection of electric capacity C12.
Further, the GaN MOSFET switch circuit module comprises a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a capacitor C13, a diode D4, a diode D5 and an INN650DA04 chip U5, wherein the negative end of the diode D4, the first end of the resistor R17 and the sixth pin of the CX2006 chip U1 of the CX2006 circuit module are connected, the negative end of the diode D4 is connected with the first end of the resistor R18, the second end of the resistor R18, the first end of the capacitor C13, the second end of the resistor R17 and the first end of the resistor R19 are connected, the second end of the capacitor C13, the second end of the resistor R19, the first end of the resistor R20, the negative end of the diode D5 and the eighth pin of the INN650DA04 chip U5 are connected, the seventh pin of the INN650DA04 chip U5, the sixth pin of the INN650DA04 chip U5, the fifth pin of the INN650DA04 chip U5, the second end of the resistor R20, the positive end of the diode D5, the second end of the resistor R21, the first end of the resistor R22, and the first end of the resistor R23 are connected, and grounded, the second end of the resistor R22 is connected to the second end of the resistor R23, the first end of the resistor R21 is connected to the fourth pin of the CX2006 chip U1 of the CX2006 circuit module, and the first pin of the INN650DA04 chip U5, the second pin of the INN650DA04 chip U5, the third pin of the INN650DA04 chip U5, the fourth pin of the INN650DA04 chip U5, and the second pin of the common mode inductor LF2 of the transformer circuit module are connected.
The beneficial effects of the utility model are as follows: the utility model is based on CX2006 as the isolated flyback converter developed by the master control, the system uses CX2006 as the pulse width modulation controller, INN650DA04 is matched with a feedback circuit composed of an EL1019 photoelectric coupler and NC as the gallium nitride power MOSFET, and the switching power supply has the advantages of high efficiency, wide voltage stabilizing range, small ripple voltage and the like, and can effectively protect the safety of a charging IC and prolong the service life of a battery.
Drawings
FIG. 1 is a block diagram of a GaN-based power adapter circuit of the utility model;
FIG. 2 is a circuit diagram of an input rectifying and filtering module according to the present utility model;
FIG. 3 is a specific circuit diagram of a main control power supply circuit module according to the present utility model;
FIG. 4 is a specific circuit diagram of a CX2006 circuit module of the utility model;
FIG. 5 is a specific circuit diagram of a capacitive isolation module of the utility model;
FIG. 6 is a specific circuit diagram of a protocol identification output circuit module of the present utility model;
FIG. 7 is a specific circuit diagram of an RCD absorber circuit module of the present utility model;
FIG. 8 is a specific circuit diagram of a transformer circuit module of the present utility model;
FIG. 9 is a circuit diagram of a synchronous rectification module of the present utility model;
fig. 10 is a specific circuit diagram of a GaN MOSFET switch circuit module of the present utility model.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and to specific examples. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
It is noted that, unless otherwise indicated, the singular forms "a," "an," and "the" as used in this disclosure are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
First embodiment:
referring to fig. 1, the utility model provides a GaN-based power adapter circuit, which comprises an input rectifying and filtering module, a CX2006 circuit module, a master control power supply circuit module, a capacitor isolation module, a protocol identification output circuit module, an RCD absorption circuit module, a transformer circuit module, a synchronous rectifier module and a GaN MOSFET switch circuit module, wherein the input rectifying and filtering module is connected with the RCD absorption circuit module, the RCD absorption circuit module is respectively connected with the transformer circuit module and the GaN MOSFET switch circuit module, the transformer circuit module is connected with the synchronous rectifier module, the synchronous rectifier module is connected with the protocol identification output circuit module, the GaN MOSFET switch circuit module is connected with the CX2006 circuit module, and the CX2006 circuit module is connected with the master control power supply circuit module.
Specifically, the utility model adopts the honest core microelectronic CX2006 as a main control chip, and CX2006 is a peak current mode pulse width modulation controller which is used in a flyback converter power adapter converter and supports two working modes of continuous current mode and discontinuous current; the secondary side synchronous rectification adopts CX7538D of the honest-core microelectronics; the main MOSFET is an InN650DA04 gallium nitride device of Innociception; the protocol chip is CX2965C of the honest-core microelectronic; the MOSFET for main control power supply is an ark microelectronic DMZ0615E; the rectifier bridge is FMB30M, and the maximum output power is designed to be 33W.
Further as a preferred embodiment of the present utility model, referring to fig. 2, the input rectifying and filtering module includes a fuse F1, a common-mode inductor LF1, a rectifying bridge BD1, a polarity capacitor EC2, an inductor L1, and an inductor L2, where a first end of the fuse F1 is connected to a power line, a second end of the fuse F1 is connected to a fourth pin of the common-mode inductor LF1, the first pin of the common-mode inductor LF1 is connected to a power zero line, a second pin of the common-mode inductor LF1 is connected to a first pin of the rectifying bridge BD1, a third pin of the common-mode inductor LF1 is connected to a second pin of the rectifying bridge BD1, a fourth pin of the rectifying bridge BD1, a negative end of the polarity capacitor EC1, and a first end of the inductor L2 are connected to each other, a second end of the inductor L1 is connected to a positive end of the polarity capacitor EC2, and a negative end of the polarity capacitor EC2 is connected to a ground.
Further as a preferred embodiment of the present utility model, referring to fig. 3, the master power supply circuit module includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, an inductor L3, a diode D1, a diode D2, and a MOS transistor Q1, wherein a first end of the inductor L3 is connected to the positive terminal of the diode D1, a negative terminal of the diode D1 is connected to the first terminal of the resistor R1, a second terminal of the resistor R1, a first terminal of the capacitor C1, a source of the MOS transistor Q1, and a negative terminal of the diode D2 are connected to each other, a gate of the MOS transistor Q1, a second terminal of the capacitor C1, and a second terminal of the capacitor C2 are connected to each other, a drain of the MOS transistor Q1, a first terminal of the capacitor C3, and a second terminal of the resistor R4 are connected to each other, a first terminal of the resistor R4 is connected to the second terminal of the resistor R2, a first terminal of the resistor R3 and a second terminal of the resistor L3 are connected to the ground.
Further as a preferred embodiment of the present utility model, referring to fig. 4, the CX2006 circuit module includes a capacitor C4, a capacitor C5, a capacitor C6, a photo coupler OC1, and a CX2006 chip U1, a first pin of the CX2006 chip U1 is grounded, a second pin of the CX2006 chip U1, a collector of the photo coupler OC1, and a first end of the capacitor C5 are connected, a third pin of the CX2006 chip U1, a first end of the capacitor C4, and an anode end of the diode D2 are connected, a second end of the capacitor C4, an emitter of the photo coupler OC1, and a second end of the capacitor C5 are connected to ground, a fourth pin of the CX2006 chip U1, a first end of the capacitor C6, and a second end of the resistor R5 are connected to ground, a fifth pin of the CX2006 chip U1 is connected to a first end of the capacitor C3, a sixth pin of the CX2006 chip U1 is connected to a cathode end of the diode D4 of the MOSFET switch circuit module, and a second end of the capacitor C6 is connected to ground.
Specifically, CX2006 is a peak current mode pulse width modulation controller, and is used in flyback converter adapter circuit to support continuous current operation mode and intermittent current operation mode, under heavy load, the chip operates at 112KHz fixed switching frequency, and under medium load, the FB feedback voltage controls the internal oscillator operating frequency in the down-conversion mode, so as to reduce the switching loss of the system.
Further as a preferred embodiment of the present utility model, referring to fig. 6, the protocol identification output circuit module includes a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C9, an EL1019 optocoupler OC2, an L432 regulator U3, a flat cable J1 and a CX2965CDP33 chip U2, a first pin of the CX2965CDP33 chip U2, a first end of the resistor R6, a first end of the resistor R7 and a fourth pin of a CX7538D chip U4 of the synchronous rectifier module are connected, a second pin of the CX2965CDP33 chip U2 is connected to a second end of the capacitor C8, a third pin of the CX2965CDP33 chip U2 is connected to a first end of the resistor R12, a fourth pin of the CX2965CDP33 chip U2 is connected to an eighth pin of the flat cable J1, a fifth pin of the CX2965CDP33 chip U2 is connected to a sixth pin of the flat cable J1, the seventh pin of the CX2965CDP33 chip U2 is connected with the tenth pin of the flat cable J1, the eighth pin of the CX2965CDP33 chip U2, the second pin of the flat cable J1 and the second end of the capacitor C9 are connected, the ninth pin of the CX2965CDP33 chip U2, the second end of the resistor R11 and the second pin of the L432 voltage stabilizer U3 are connected with the ground, the second end of the resistor R6, the positive end of the EL1019 optocoupler OC2 and the first end of the resistor R8, the second end of the EL1019 optocoupler OC2, the first end of the resistor R10 and the first pin of the L432 voltage stabilizer U3 are connected, the second end of the resistor R10 is connected with the first end of the capacitor C8, the second end of the resistor R7 is connected with the first end of the resistor R9, the third end of the resistor R11 and the first end of the resistor R11 are connected with the first end of the resistor R8, the first end of the first pin of the capacitor C1 is connected with the ground, the second end of the resistor R12 is grounded to the twelfth pin of the flat cable J1.
Specifically, CX2965C integrates PD2.0, PD3.0, PPS, high pass QC2.0, 3.0 fast charge protocol, hua FCP/SCP fast charge protocol, samsung AFC fast charge protocol, BC1.2 DCP of apple devices, and multi-protocol interface controller 2.4A charge protocol.
Further as a preferred embodiment of the present utility model, referring to fig. 7, the RCD snubber circuit module includes a resistor R13, a resistor R14, a resistor R15, a capacitor C10, and a diode D3, where a first end of the capacitor C10, a first end of the resistor R14, and a positive end of a polar capacitor EC2 of the input rectifying and filtering module are connected, a second end of the capacitor C10 is connected to the first end of the resistor R13, a second end of the resistor R14 is connected to the first end of the resistor R15, a second end of the resistor R13 is connected to a negative end of the diode D3, and a positive end of the diode D3, a second end of the resistor R15, and a second pin of a common mode inductor LF2 of the transformer circuit module are connected.
Specifically, the RCD snubber circuit suppresses the overvoltage better than the RC snubber circuit, and the Vce increases less than the RC snubber circuit, and the loss is reduced to a certain extent due to the absorption resistance which can take a large resistance value, and the self-inductance (leakage inductance) generated due to the existence of magnetic leakage of the transformer, so as to avoid the occurrence of a very high voltage when the MOSFET is turned off, and the RCD snubber circuit protects the drain-source ends of the MOSFET from breakdown due to the excessively high voltage stress.
Further as a preferred embodiment of the present utility model, referring to fig. 8, the transformer circuit module includes a common-mode inductor LF2 and a polarity capacitor EC3, where a first pin of the common-mode inductor LF2 is connected to the positive terminal of the polarity capacitor EC2 of the input rectifying and filtering module, a W pin of the common-mode inductor LF2 is connected to the fifth pin of the CX7538D chip U4 of the synchronous rectifier module, and a B pin of the common-mode inductor LF2, the positive terminal of the polarity capacitor EC3, and a fourth pin of the CX7538D chip U4 of the synchronous rectifier module are connected to each other, and a negative terminal of the polarity capacitor EC3 is grounded.
Further as a preferred embodiment of the present utility model, referring to fig. 9, the synchronous rectifier module includes a capacitor C11, a capacitor C12, a resistor R16, and a CX7538D chip U4, where a fifth pin of the CX7538D chip U4, a sixth pin of the CX7538D chip U4, a seventh pin of the CX7538D chip U4, an eighth pin of the CX7538D chip U4, and a first end of the capacitor C11 are connected, a first pin of the CX7538D chip U4, a second pin of the CX7538D chip U4, and a second end of the resistor R16 are connected to ground, a second end of the capacitor C11 is connected to a first end of the resistor R16, a third pin of the CX7538D chip U4 is connected to a first end of the capacitor C12, and a second end of the capacitor C12 is grounded.
Specifically, CX7538D is a high-performance secondary side synchronous rectification control chip for a switching power supply, and in the application of a low-voltage and high-current scheme adapter, the device can easily meet the requirements of green energy conservation, and is an ideal solution for an ultralow-conduction voltage-drop rectifying device.
Further as a preferred embodiment of the present utility model, referring to fig. 10, the GaN MOSFET switch circuit module includes a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a capacitor C13, a diode D4, a diode D5, and an INN650DA04 chip U5, the negative terminal of the diode D4, the first terminal of the resistor R17, and the sixth pin of the CX2006 chip U1 of the CX2006 circuit module are connected, the negative terminal of the diode D4 is connected to the first terminal of the resistor R18, the second terminal of the resistor R18, the first terminal of the capacitor C13, the second terminal of the resistor R17, the first terminal of the resistor R20, the negative terminal of the diode D5, and the eighth pin of the INN650DA04 chip U5 are connected, the seventh pin of the INN650DA04 chip U5, the sixth pin of the INN650DA04 chip U5, the fifth pin of the INN650DA04 chip U5, the second end of the resistor R20, the positive end of the diode D5, the second end of the resistor R21, the first end of the resistor R22, and the first end of the resistor R23 are connected, and grounded, the second end of the resistor R22 is connected to the second end of the resistor R23, the first end of the resistor R21 is connected to the fourth pin of the CX2006 chip U1 of the CX2006 circuit module, and the first pin of the INN650DA04 chip U5, the second pin of the INN650DA04 chip U5, the third pin of the INN650DA04 chip U5, the fourth pin of the INN650DA04 chip U5, and the second pin of the common mode inductor LF2 of the transformer circuit module are connected.
Specifically, the GaN MOSFET switch circuit module adopts an INN650DA04 chip, has the characteristics of high frequency, high efficiency, extremely low loss, rapid active heat dissipation and the like, and simultaneously adopts DFN5 to 6 for packaging, so that the small-size and high-efficiency are realized, and the GaN MOSFET switch circuit module rapidly becomes a market focus.
Further in accordance with a preferred embodiment of the present utility model, referring to fig. 5, the analog signal is isolated from the digital signal by the patch capacitors in the capacitive isolation module.
The working principle of the utility model is as follows:
the 220V alternating current enters a 250V/2A slow-melting fuse F1 which is input into a rectifying and filtering module, passes through a common mode inductor, is converted into high-voltage pulsating direct current through a rectifier bridge, and outputs smoother 310V direct current after passing through a pi-type filtering network consisting of L1, L2, EC1 and EC2, and is powered to CX2006 as high-voltage starting through a voltage reducing network consisting of R2 and R4 in a main control power supply circuit module, once the circuit enters a normal working state, the power is supplied by an auxiliary winding L3, the power is isolated from C7 patch capacitors of a capacitor isolation module in an analog mode and a digital mode, a protocol chip CX2965 forms a feedback path with the main control CX2006 through a photoelectric coupling device, and is used for adjusting output power and voltage, U5 is a gallium nitride MOSFET and is controlled by a high-frequency PWM signal generated by the CX2006, and is used for realizing high-voltage pulse direct current on the primary side; and U4 is a synchronous rectification chip, and is used for synchronously rectifying the low-voltage pulse signal coupled to the secondary side and transmitting the low-voltage pulse signal to U2 of the protocol identification output circuit module through EC3 filtering of the transformer circuit module.
While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (9)
1. The utility model provides a power adapter circuit based on GaN, its characterized in that includes input rectification filter module, CX2006 circuit module, master control power supply circuit module, electric capacity isolation module, protocol identification output circuit module, RCD absorption circuit module, transformer circuit module, synchronous rectifier module and GaNMOSFET switch circuit module, input rectification filter module is connected with RCD absorption circuit module, RCD absorption circuit module is connected with transformer circuit module, gaNMOSFET switch circuit module respectively, transformer circuit module is connected with synchronous rectifier module, synchronous rectifier module is connected with protocol identification output circuit module, gaOSFET switch circuit module is connected with CX2006 circuit module, CX2006 circuit module is connected with master control power supply circuit module.
2. The GaN-based power adapter circuit of claim 1, wherein the input rectifying and filtering module comprises a fuse F1, a common-mode inductor LF1, a rectifying bridge BD1, a polarity capacitor EC2, an inductor L1 and an inductor L2, a first end of the fuse F1 is connected to a power line, a second end of the fuse F1 is connected to a fourth pin of the common-mode inductor LF1, a first pin of the common-mode inductor LF1 is connected to a power zero line, a second pin of the common-mode inductor LF1 is connected to a first pin of the rectifying bridge BD1, a third pin of the common-mode inductor LF1 is connected to a second pin of the rectifying bridge BD1, a fourth pin of the rectifying bridge BD1, a positive end of the polarity capacitor EC1 and a first end of the inductor L2 are connected to each other, a second end of the inductor L1 is connected to a positive end of the polarity capacitor EC2, and a negative end of the polarity capacitor EC2 is connected to a ground.
3. The GaN-based power adapter circuit of claim 2, wherein the master power supply circuit module comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a capacitor C1, a capacitor C2, a capacitor C3, an inductor L3, a diode D1, a diode D2, and a MOS transistor Q1, a first end of the inductor L3 is connected to a positive terminal of the diode D1, a negative terminal of the diode D1 is connected to a first terminal of the resistor R1, a second terminal of the resistor R1, a first terminal of the capacitor C1, a source of the MOS transistor Q1, and a negative terminal of the diode D2 are connected, a gate of the MOS transistor Q1, a second terminal of the capacitor C1, and a second terminal of the capacitor C2 are connected to ground, a drain of the MOS transistor Q1, a first terminal of the capacitor C3, and a second terminal of the resistor R4 are connected to a second terminal of the resistor R2, a first terminal of the resistor R3 and a first terminal of the inductor L3 are connected to a first terminal of the resistor L5.
4. A GaN-based power adapter circuit according to claim 3, wherein said CX2006 circuit module comprises a capacitor C4, a capacitor C5, a capacitor C6, a photo coupler OC1 and a CX2006 chip U1, a first pin of said CX2006 chip U1 is grounded, a second pin of said CX2006 chip U1, a collector of said photo coupler OC1 and a first end of said capacitor C5 are connected, a third pin of said CX2006 chip U1, a first end of said capacitor C4 and an anode end of a diode D2 are connected, a second end of said capacitor C4, an emitter of said photo coupler OC1 and a second end of said capacitor C5 are connected and grounded, a fourth pin of said CX2006 chip U1, a first end of said capacitor C6 and a second end of said resistor R5 are connected, a fifth pin of said CX2006 chip U1 is connected to a first end of said capacitor C3, a sixth pin of said CX2006 chip U1 is connected to an anode end of said diode nmfet switch module, and a cathode end of said capacitor C6 is connected to ground.
5. The GaN-based power adapter circuit of claim 4, wherein the protocol identification output circuit module comprises a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C8, a capacitor C9, an EL1019 optocoupler OC2, an L432 regulator U3, a flat cable J1, and a CX2965CDP33 chip U2, a first pin of the CX2965CDP33 chip U2, a first end of the resistor R6, a first end of the resistor R7, and a fourth pin of the CX7538D chip U4 of the synchronous rectifier module, a second pin of the CX2965CDP33 chip U2 is connected to a second end of the capacitor C8, a third pin of the CX2965CDP33 chip U2 is connected to a first end of the resistor R12, a fourth pin of the CX2965CDP33 chip U2 is connected to an eighth pin of the flat cable J1, a second pin of the CX2965CDP33 chip U2 is connected to a sixth pin of the flat cable J2, the seventh pin of the CX2965CDP33 chip U2 is connected with the tenth pin of the flat cable J1, the eighth pin of the CX2965CDP33 chip U2, the second pin of the flat cable J1 and the second end of the capacitor C9 are connected, the ninth pin of the CX2965CDP33 chip U2, the second end of the resistor R11 and the second pin of the L432 voltage stabilizer U3 are connected with the ground, the second end of the resistor R6, the positive end of the EL1019 optocoupler OC2 and the first end of the resistor R8, the second end of the EL1019 optocoupler OC2, the first end of the resistor R10 and the first pin of the L432 voltage stabilizer U3 are connected, the second end of the resistor R10 is connected with the first end of the capacitor C8, the second end of the resistor R7 is connected with the first end of the resistor R9, the third end of the resistor R11 and the first end of the resistor R11 are connected with the first end of the resistor R8, the first end of the first pin of the capacitor C1 is connected with the ground, the second end of the resistor R12 is grounded to the twelfth pin of the flat cable J1.
6. The GaN-based power adapter circuit of claim 5, wherein the RCD snubber circuit module comprises a resistor R13, a resistor R14, a resistor R15, a capacitor C10, and a diode D3, wherein the first terminal of the capacitor C10, the first terminal of the resistor R14, and the positive terminal of the polar capacitor EC2 of the input rectifying and filtering module are connected, the second terminal of the capacitor C10 is connected to the first terminal of the resistor R13, the second terminal of the resistor R14 is connected to the first terminal of the resistor R15, the second terminal of the resistor R13 is connected to the negative terminal of the diode D3, and the positive terminal of the diode D3, the second terminal of the resistor R15, and the second pin of the common mode inductor LF2 of the transformer circuit module are connected.
7. The GaN-based power adapter circuit of claim 6, wherein the transformer circuit module comprises a common-mode inductor LF2 and a polarity capacitor EC3, a first pin of the common-mode inductor LF2 is connected to a positive terminal of the polarity capacitor EC2 of the input rectifying and filtering module, a W pin of the common-mode inductor LF2 is connected to a fifth pin of the CX7538D chip U4 of the synchronous rectifier module, a B pin of the common-mode inductor LF2, a positive terminal of the polarity capacitor EC3, and a fourth pin of the CX7538D chip U4 of the synchronous rectifier module are connected to ground, and a negative terminal of the polarity capacitor EC3 is grounded.
8. The GaN-based power adapter circuit of claim 7, wherein the synchronous rectifier module comprises a capacitor C11, a capacitor C12, a resistor R16, and a CX7538D chip U4, a fifth pin of the CX7538D chip U4, a sixth pin of the CX7538D chip U4, a seventh pin of the CX7538D chip U4, an eighth pin of the CX7538D chip U4, and a first end of the capacitor C11, a first pin of the CX7538D chip U4, a second pin of the CX7538D chip U4, and a second end of the resistor R16 are connected to ground, a second end of the capacitor C11 is connected to a first end of the resistor R16, a third pin of the CX7538D chip U4 is connected to a first end of the capacitor C12, and a second end of the capacitor C12 is grounded.
9. The GaN-based power adapter circuit of claim 8, wherein the ganfet switch circuit block comprises resistor R17, resistor R18, resistor R19, resistor R20, resistor R21, resistor R22, resistor R23, capacitor C13, diode D4, diode D5, and INN650DA04 chip U5, the negative terminal of diode D4, the first terminal of resistor R17, and the sixth pin of CX2006 chip U1 of the CX2006 circuit block are connected, the negative terminal of diode D4 is connected to the first terminal of resistor R18, the second terminal of resistor R18, the first terminal of capacitor C13, the second terminal of resistor R17, and the first terminal of resistor R19 are connected, the second terminal of capacitor C13, the second terminal of resistor R19, the first terminal of resistor R20, the negative terminal of diode D5, and the eighth pin of INN650DA04 chip U5 are connected, the seventh pin of the INN650DA04 chip U5, the sixth pin of the INN650DA04 chip U5, the fifth pin of the INN650DA04 chip U5, the second end of the resistor R20, the positive end of the diode D5, the second end of the resistor R21, the first end of the resistor R22, and the first end of the resistor R23 are connected, and grounded, the second end of the resistor R22 is connected to the second end of the resistor R23, the first end of the resistor R21 is connected to the fourth pin of the CX2006 chip U1 of the CX2006 circuit module, and the first pin of the INN650DA04 chip U5, the second pin of the INN650DA04 chip U5, the third pin of the INN650DA04 chip U5, the fourth pin of the INN650DA04 chip U5, and the second pin of the common mode inductor LF2 of the transformer circuit module are connected.
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| CN202320663202.9U CN219499229U (en) | 2023-03-30 | 2023-03-30 | GaN-based power adapter circuit |
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| CN202320663202.9U CN219499229U (en) | 2023-03-30 | 2023-03-30 | GaN-based power adapter circuit |
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