CN111509825A - 45W broadband voltage self-adaptation PPS super portable power source structure that fills soon - Google Patents
45W broadband voltage self-adaptation PPS super portable power source structure that fills soon Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
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Abstract
The invention discloses a 45W broadband voltage self-adaptive PPS super quick-charging mobile power supply structure. The circuit comprises an EMI suppression circuit, a rectification filter circuit, a clamping protection circuit, a main power switch circuit, a high-frequency transformer, a secondary EMI absorption circuit, an output filter feedback circuit, an optical coupling switch circuit, a three-way voltage conversion module and a three-way output identification module. The invention has the advantages of simple circuit, small volume, low cost, safety and reliability. As a novel quick charging circuit based on the PD3.0 protocol, the quick charging circuit can self-adaptively identify various protocols, further realize various required direct current outputs and is compatible with various products. The power output device can be in real-time communication with the electric equipment through the output identification module, the output power condition is changed in a self-adaptive mode, quick charging is achieved, and the service life of a battery of the electric equipment can be prolonged to the maximum extent.
Description
Technical Field
The invention relates to the technical field of quick charging of charging devices, and particularly provides a 45W broadband quick charging power supply structure based on a PD3.0 protocol, which can realize a power self-adaptive charging circuit along with different load types.
Background
In the current society with high-speed informatization development, electronic devices such as mobile phones and flat panels become indispensable tools for people's life and daily work, and the rapid supplement of electric energy also becomes a technical focus for the development of the electronic field. At present, the existing switching power supply adapters in the market are generally in a 5W/10W low-power single direct-current output specification, and some limitations are generated on the use of users to a certain extent, such as: low efficiency, suitability for different products, etc. In 2017, the USB-IF organization released important update of USB PD3.0, and formally introduced PPS protocol aiming at standardizing the fast charging technology. Although the latest QC4+ charging technology was released by the american college of highways, no charging device could really implement QC4+ low-voltage direct charging technology. In addition, most of the commercial USBPD mobile power supplies adopt a scheme of highly integrated chips, and although the cost is reduced, the charging power of 40W, 60W or even 100W is difficult to realize, so that the quick charging requirement of the notebook computer cannot be met. The existing switching power supply also has the defects of large volume, low efficiency, high temperature and the like.
Disclosure of Invention
The invention aims to solve the problems and provides a power supply structure which supports maximum 45w, has high energy efficiency and can support various fast charging protocols. The circuit can realize high-power broadband electric energy output and realize voltage self-adaptation according to the change of the load type, thereby outputting different types of electric energy so as to achieve the aim of quick charging.
In order to achieve the purpose, the technology of the invention is realized by adopting the following technical scheme.
A45W broadband voltage self-adaptive PPS super fast charging mobile power supply structure comprises a power supply input module, a flyback circuit module, a fast charging voltage conversion module and a fast charging identification module, wherein the power supply input module, the flyback circuit module, the fast charging voltage conversion module and the fast charging identification module are sequentially connected; the power input module is connected with external 220V alternating current, and the quick charge identification module is connected with external terminal use equipment;
the power input module comprises an input end EMI suppression circuit and a rectification filter module which are connected;
the flyback circuit module comprises a flyback main circuit, a main power switch circuit and an output voltage feedback loop which are sequentially connected in series; then the output voltage feedback loop feeds the voltage back to the flyback main circuit;
the quick charging identification module comprises a first output circuit of a USBA port, a second output circuit of the USBA port and a quick charging identification output circuit of a TYPE-C port which are connected in parallel.
Preferably, the power input module comprises an input interface P1, a common-mode inductor L, a fuse FU1, a resistor R18, a resistor R19, a thermistor RT1, a capacitor C10, a filter capacitor C11, a filter capacitor C12 and a rectifier bridge D6, one end of the fuse FU1 is connected with the anode of the input interface P1, the other end of the fuse FU1 is connected with a pin No. 2 of the common-mode inductor L, one end of the thermistor RT1 is connected with the cathode of the input interface P1, the other end of the thermistor RT1 is connected with a pin No. 4 of the common-mode inductor 1, the resistor R1 and the resistor R1 are connected in series and then connected in parallel with the input end of the common-mode inductor 1, the capacitor C1 is connected in parallel with the input end of the common-mode inductor 1, the output end of the common-mode inductor 1 is connected with the input end of the.
The input interface P1, the common mode inductor L2, the fuse FU1, the resistor R18, the resistor R19, the thermistor RT1 and the capacitor C10 form an EMI suppression circuit, and the filter capacitor C11, the filter capacitor C12 and the rectifier bridge D6 form a rectifier and filter module.
Preferably, the main power switch circuit comprises an off-line switch chip U2, a transformer TR1, a photoelectric coupler U1, resistors R2-R11, capacitors C5-C9 and diodes D2-D4;
one end of the resistor R8 and the resistor R9 are connected in series and then connected with the anode of the rectifier bridge D6, and the other end of the resistor R8 and the resistor R9 are connected in series and then connected with a voltage detection pin of the switch chip U2; the resistor R2, the resistor R3, the capacitor C5 and the diode D2 are sequentially connected in parallel, and then are connected in series with the resistor R4 and the diode D4 to form a clamping protection circuit, one end of the clamping protection circuit is connected with the anode of the rectifier bridge D6, and the other end of the clamping protection circuit is connected with a drain electrode pin of the switch chip U2; a frequency pin of the switch chip U2 is connected with a source electrode pin; an external current limiting pin of the switch chip U2 is connected with a source electrode through a resistor R10; one end of the resistor R6 and the resistor R7 are connected in series and then connected with the output end of the rectifier bridge D6, and the other end of the resistor R6 and the resistor R7 are connected in series and then connected with the external current limit pin of the switch chip U2; the resistor R11 is connected with the capacitor C8 in series and then connected with the capacitor C7 in parallel, and then connected between the control pin and the frequency pin of the switch chip U2 in parallel; an absorption loop is formed by the diode D3, the resistor R5 and the capacitor C6, one end of the absorption loop is connected with the transformer TR1, and the other end of the absorption loop is used as the output end of the bias winding; the capacitor C9 is connected in parallel to two ends of the bias winding of the transformer; the collector of the photoelectric coupler U1 is connected with the cathode of the diode D3, and the emitter of the photoelectric coupler U1 is connected with the control pin of the switch chip U2.
Preferably, the flyback main circuit comprises an off-line switch chip U2, a transformer TR1, a resistor R1, a resistor R15, capacitors C1 to C4, C13 and C14, an inductor L1, a diode D1, a light emitting diode D5, output terminals P2 and P3, the inductor L1, the capacitor C13 and the capacitor C14 form a pi-type filter circuit, the resistor R1 is connected with the capacitor C2 in series and then connected with the diode D1 in parallel to form an absorption loop, one end of the absorption loop is connected with the transformer TR1, the other end of the absorption loop is connected with the output terminals P2 and P3 through the pi-type filter circuit, the capacitors C4 and the capacitors C3 are connected with two ends of a secondary side of the transformer in parallel, one end of the resistor R15 is connected with the light emitting diode D5 in series and then connected with an output voltage anode, and the other end of the resistor R15 is grounded.
Preferably, the output voltage feedback loop comprises a resistor R12, a resistor R13, a resistor R14, a resistor R16, a resistor R17, capacitors C15 and C16, a voltage-stabilizing reference source Q1, and a photocoupler U1;
the resistors R16 and R17 are connected in series and then connected in parallel at the output end; one end of the resistor R17 is connected with the reference end of the voltage-stabilizing reference source Q1, and the other end of the resistor R17 is connected with the anode of the Q1; the capacitor C15 is connected in parallel between the cathode of the voltage-stabilizing reference source Q1 and the reference end; the resistor R12 is connected with the capacitor C16 in series and then connected with the resistor R13 in parallel, one end of the resistor R12 is connected with the anode of the photoelectric coupler U1, and the other end of the resistor R3526 is connected to the secondary side of the transformer; the resistor R14 is connected in parallel between the cathode and the anode of the photoelectric coupler U1, and the cathode of the voltage-stabilizing reference source Q1 is connected with the cathode of the photoelectric coupler U1.
Preferably, the fast charging voltage conversion module includes a synchronous switch buck conversion chip U1, an inductor L1, a resistor R1, a resistor R3, a capacitor C1 to a capacitor C14;
the input voltage is filtered by capacitors C11-C14 and then is connected to the input end of a buck conversion U1, one end of a resistor R3 is connected to a frequency adjustment pin of the buck conversion U1, the other end of the resistor R3 is grounded, one end of a capacitor C3 is connected to a bootstrap capacitor pin of a chip U1, the other end of the capacitor C3 is connected to a switch node of the chip, one end of an inductor L1 is connected to a switch node of the buck conversion U1, the other end of the inductor is connected to an output current limiting detection pin of the chip after being filtered by a capacitor C3, a capacitor C4, a capacitor C6 and a capacitor C7, and an output pin of.
Preferably, the first output circuit of the USBA port and the second output circuit of the USBA port are the same, and include a synchronous switch buck conversion chip U1, a USB interface Y1, a resistor R2, and capacitors C15 to C18, and the fast charge identification signal pins DM and DP of the buck conversion chip U1 are respectively connected to the USB interface Y1 after being filtered by capacitors C17 and C18; the resistor R2 is used as a discharge resistor, one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a voltage output pin of the buck conversion chip U1; the output pin of the buck conversion chip U1 is connected with the VCC end of the USB interface Y1 through the filter capacitors C15 and C16.
Preferably, the TYPE-C port fast-charging identification output circuit comprises a synchronous switch buck conversion chip U1, a TYPE-C port Y2, capacitors C15 and C16, and a resistor R2; one end of the resistor R2 is grounded, and the other end is connected with a voltage output pin of the chip U1; an output pin of the chip U1 is connected with a power supply pin VBUS of a TYPE-C interface Y2 through filter capacitors C15 and C16; the DM pin of the chip U1 is connected with the data pins DN1 and DN2 of the interface Y2; the DP pin of the chip U1 is connected with the DP1 and DP2 of the interface Y2; the chip U1 detects that the pins CC1 and CC2 are respectively connected to the corresponding pins of the TYPE-C interface.
The invention has the beneficial effects that: the circuit structure is miniaturized and lightened by adopting a high-frequency switching technology; the double USB interfaces and the Type-C interface output can charge a plurality of terminal devices at the same time; various quick charging protocols are supported, the terminal equipment can be automatically identified to adjust output voltage and current, and the service life of the battery is prolonged; the USBPD protocol is supported, and 5V/3A, 7V/2.5A, 9V/2A, 12V/2A, 15V/2.3A and 20V/2.3A can be output externally; the electric energy conversion efficiency reaches 85 percent, and high-efficiency energy-saving charging is realized; the high-power output of 45W broadband is realized, and the high-capacity terminal equipment can be charged.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a flyback circuit of the present invention.
Fig. 2 is a schematic block diagram of an embodiment of a fast charging circuit capable of realizing broadband high power according to the present invention.
FIG. 3 is a schematic diagram of an embodiment of a USBA port fast charge output of the present invention.
FIG. 4 is a schematic diagram of an embodiment of a Type-C port fast charge output according to the present invention.
Detailed Description
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
Referring to fig. 1, the present embodiment is a 45W broadband based on a PD3.0 protocol, and a PPS super fast charging power supply structure capable of realizing voltage self-adaptation, including a power input module, a flyback circuit module, a fast charging voltage conversion module, and an output fast charging identification module, where the flyback circuit module, the fast charging voltage conversion module, and the fast charging identification module are connected in sequence, the power input module is connected to a charger, and the fast charging identification circuit is connected to an external terminal user device.
The power input module comprises an input end EMI suppression circuit 11, a rectification filter module 12 and a clamping protection circuit 13 connected to the output end of the rectification filter module; the flyback circuit module comprises a flyback main circuit, a main power switch circuit 14, a secondary EMI absorption circuit 16, an auxiliary winding filter circuit 17, an output filter circuit 18, an output voltage feedback circuit 20 and an optical coupling switch circuit 21, wherein the auxiliary winding filter circuit 17, the optical coupling switch circuit 21 and the main power switch circuit 14 are sequentially connected, and the output feedback circuit 20 controls the on-off of the optical coupling switch; the output quick-charging identification module comprises a first output circuit 25 of a USBA port, a second output circuit 26 of the USBA port and a quick-charging identification output circuit 27 of a TYPE-C port, and is respectively connected with the voltage conversion module A22, the voltage conversion module B23 and the voltage conversion module C24.
Specifically, the power input module comprises an input interface P1, a common mode inductor L, a fuse FU1, a resistor R18, a resistor R19, a thermistor RT1, capacitors C10 to C12 and a rectifier bridge D6, common mode inductors are connected in series in the circuit and can effectively suppress common mode current, one end of the fuse FU1 is connected with the positive electrode of the input interface P1, the other end of the fuse FU is connected with a No. 2 pin of the common mode inductor L, fuse fusing current adopts 1.25A to protect the circuit, a thermistor RT1 with a negative temperature coefficient is connected in series between the input interface and the common mode inductor and can effectively suppress surge current generated during startup, the resistors R18 and R19 are connected in parallel to the input end of the common mode inductor L2 to form a filter discharge circuit and disperse borne power, a capacitor C10 is connected in parallel to the input end of the common mode inductor L to filter differential mode interference, the output end of the common mode inductor L is connected to the input end of the rectifier bridge circuit D6, and the capacitors C11.
The flyback main circuit comprises an off-line switch chip U2, a transformer TR1, a resistor R1, a resistor R15, capacitors C1 to C4, C13 and C14, an inductor L1, a diode D1, a light emitting diode D5, output terminals P2 and P3, an inductor L1, capacitors C13 and C14 to form a pi-type L C filter circuit to reduce output ripple voltage, one end of an absorption loop formed by the diode D1, the resistor R1 and the capacitor C2 is connected with a No. 9 pin of the transformer, the other end of the absorption loop is connected with the output terminals through the pi-type filter circuit, the diodes can guarantee unidirectional circulation of electric energy, the influence of reverse peak voltage on the diodes can be restrained after the RC resistors and capacitors are connected in series, the filter capacitors C4 and C5 are connected in parallel with two ends of the secondary side of the transformer, one end of the resistor R15 and the light emitting diode D5 are connected with the positive pole of the output voltage after being connected in series, and the other.
The main power switch circuit comprises an off-line switch chip U2, a transformer TR1, a photoelectric coupler U1, resistors R2-R11, capacitors C5-C9 and diodes D2-D4, wherein one end of each of the resistors R8 and R9 is connected with the anode of the rectifier bridge after being connected in series, and the other end of each resistor is connected with a voltage detection pin of the switch chip U2; the resistors R2-R4, the capacitor C3, the diode D2 and the diode D4 jointly form a clamping protection circuit, one end of the clamping protection circuit is connected with the anode of the rectifier bridge, and the other end of the clamping protection circuit is connected with a drain electrode pin of the switch chip U2; the frequency pin of the chip U2 is directly connected with the source electrode pin, the switching frequency of the chip is configured to be 132kHz, the size of the transformer and the power supply is reduced, and the EMI frequency is lower than 150 kHz; an external current limiting pin of the chip U2 is connected with a source electrode through a resistor R10; one end of the resistors R6 and R7 is connected with the output end of the rectifier bridge after being connected in series, and the other end of the resistors R6 and R7 is connected with an external current limit pin of the chip, so that the current limit is reduced along with the reduction of the input voltage; the resistor R11 and the capacitor C8 are connected in series and then connected in parallel with a control pin and a frequency pin of the chip U2; the diode D3, the resistor R5 and the capacitor C6 form an absorption loop, one end of the absorption loop is connected with the No. 5 pin of the transformer, the other end of the absorption loop is used as the output end of the bias winding, the diode can ensure the unidirectional circulation of electric energy, and the RC resistance-capacitance series connection can inhibit the influence of reverse peak voltage on the diode; the capacitor C9 is connected in parallel at two ends of the bias winding of the transformer and filters the output voltage; the collector of the photoelectric coupler U1 is connected with the cathode of the diode D3, and the emitter is connected with the control pin of the switch chip U2.
The output voltage feedback loop comprises resistors R12-R17, capacitors C15, C16, a voltage-stabilizing reference source Q1 and a photoelectric coupler U1, wherein one end of the resistor R17 is connected with the reference end of the voltage-stabilizing reference source Q1, and the other end of the resistor R17 is connected with the anode of the Q1; the capacitor C15 is connected in parallel between the cathode of the voltage-stabilizing reference source Q1 and the reference end; the resistor R12 is connected with the capacitor C16 in series and then connected with the resistor R13 in parallel, one end of the resistor R12 is connected with the anode of the photoelectric coupler U1, and the other end of the resistor R3526 is connected to the secondary side of the transformer; the resistor R14 is connected in parallel between the cathode and the anode of the photoelectric coupler U1, and the cathode of the voltage-stabilizing reference source Q1 is connected with the cathode of the photoelectric coupler U1; resistors R16 and R17 are connected in series and then connected in parallel at the output end to divide the voltage of the output end, and then the error is amplified through a voltage-stabilizing reference source Q1, so that the shunt of Q1 from the cathode to the anode is controlled; when the output voltage is increased, the shunt current of the Q1 is increased, the light-emitting of the optical coupler is enhanced, the stronger the feedback voltage received by the off-line switch chip U2 is, and the chip U2 can adjust the switching time of the internal MOSFET so as to output a voltage loop; since Vref of Q1 is 2.5V at equilibrium, when R16 is 71.5kohm and R17 is 10.2kohm, the output voltage is
The fast charging voltage conversion module comprises a synchronous switch buck conversion chip U1, an inductor L1, a resistor R1, a resistor R3, a capacitor C1 to a capacitor C14, input voltage is filtered by the capacitors C11 to C14 and then is connected to the input end of a chip U1, one end of the resistor R3 is connected with a frequency adjusting pin of the chip U1, the other end of the resistor R3 is grounded, R3 is selected to be 75kohm, the frequency of the chip is adjusted to be 220kHz, one end of the capacitor C3 is connected with a bootstrap capacitor pin of a chip U1, the other end of the capacitor C3 is connected with a switch node of the chip, the value of the capacitor is 0.1uF, voltage is provided for grid driving of an upper tube, one end of the inductor L is connected with the switch node of the chip U1, the other end of the inductor C3 is connected to an output current limiting detection pin after being filtered by the capacitors C3 to C7, the output pin of the buck conversion chip U1 is connected to a current detection pin through the resistor R1, the.
The USBA port output circuit comprises a synchronous switch buck conversion chip U1, a USB interface Y1, a resistor R2 and capacitors C15-C18, wherein fast charge identification signal pins DM and DP of the buck conversion chip U1 are respectively connected with the USB interface Y1 after being filtered by the capacitors C17 and C18; the resistor R2 is used as a discharge resistor, one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a voltage output pin of the chip U1; the chip output pin is connected with a VCC end of a USB interface Y1 through filter capacitors C15 and C16; the USB interface Y1 is connected with the terminal user equipment and supports the USBPD protocol.
The TYPE-C port fast charging identification output circuit comprises a synchronous switch buck conversion chip U1, a TYPE-C port Y2, capacitors C15 and C16 and a resistor R2; the resistor R2 is used as a discharge resistor, one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a voltage output pin of the chip U1; the chip output pin is connected with a power supply pin VBUS of a TYPE-C interface Y2 through filter capacitors C15 and C16; a USB quick charge identification signal DM of the voltage reduction conversion chip U1 is connected with data pins DN1 and DN2 of a TYPE-C interface Y2; the USB quick charging identification signal DP is connected with the data pins DP1 and DP2 of the Y2; Type-C detection pins CC1 and CC2 of a chip U1 are respectively connected to corresponding pins of a TYPE-C interface for system configuration; the TYPE-C interface Y2 is connected with the end-use equipment, can support multiple fast-charging protocols through DM/DP and CC1/CC2, when TYPE-C exports 5V, can receive other fast-charging protocols, and change voltage and current according to the fast-charging protocol that newly receives, and when TYPE-C exports not 5V, then other fast-charging protocols are shielded automatically.
The invention is not the best known technology.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A45W broadband voltage self-adaptive PPS super fast charging mobile power supply structure is characterized by comprising a power supply input module, a flyback circuit module, a fast charging voltage conversion module and a fast charging identification module, wherein the power supply input module, the flyback circuit module, the fast charging voltage conversion module and the fast charging identification module are sequentially connected; the power input module is connected with external 220V alternating current, and the quick charge identification module is connected with external terminal use equipment;
the power input module comprises an input end EMI suppression circuit and a rectification filter module which are connected;
the flyback circuit module comprises a flyback main circuit, a main power switch circuit and an output voltage feedback loop which are sequentially connected in series; then the output voltage feedback loop feeds the voltage back to the flyback main circuit;
the quick charging identification module comprises a first output circuit of a USBA port, a second output circuit of the USBA port and a quick charging identification output circuit of a TYPE-C port which are connected in parallel.
2. The power supply structure of claim 1, wherein the power input module comprises an input interface P1, a common-mode inductor L, a fuse FU1, a resistor R18, a resistor R19, a thermistor RT1, a capacitor C10, a filter capacitor C11, a filter capacitor C12 and a rectifier bridge D6, one end of the fuse FU1 is connected with the positive electrode of an input interface P1, the other end of the fuse FU1 is connected with the pin 2 of the common-mode inductor L, one end of the thermistor RT1 is connected with the negative electrode of the input interface P1, the other end of the thermistor RT1 is connected with the pin 4 of the common-mode inductor 1, the resistor R1 and the resistor R1 are connected in series and then connected in parallel with the input end of the common-mode inductor 1, the capacitor C1 is connected in parallel with the input end of the common-mode inductor 1, the output end of the common-mode inductor 1 is connected with the input end of the rectifier bridge circuit D36.
The input interface P1, the common mode inductor L2, the fuse FU1, the resistor R18, the resistor R19, the thermistor RT1 and the capacitor C10 form an EMI suppression circuit, and the filter capacitor C11, the filter capacitor C12 and the rectifier bridge D6 form a rectifier and filter module.
3. The power supply structure according to claim 2, characterized in that: the main power switch circuit comprises an off-line switch chip U2, a transformer TR1, a photoelectric coupler U1, resistors R2-R11, capacitors C5-C9 and diodes D2-D4;
one end of the resistor R8 and the resistor R9 are connected in series and then connected with the anode of the rectifier bridge D6, and the other end of the resistor R8 and the resistor R9 are connected in series and then connected with a voltage detection pin of the switch chip U2; the resistor R2, the resistor R3, the capacitor C5 and the diode D2 are sequentially connected in parallel, and then are connected in series with the resistor R4 and the diode D4 to form a clamping protection circuit, one end of the clamping protection circuit is connected with the anode of the rectifier bridge D6, and the other end of the clamping protection circuit is connected with a drain electrode pin of the switch chip U2; a frequency pin of the switch chip U2 is connected with a source electrode pin; an external current limiting pin of the switch chip U2 is connected with a source electrode through a resistor R10; one end of the resistor R6 and the resistor R7 are connected in series and then connected with the output end of the rectifier bridge D6, and the other end of the resistor R6 and the resistor R7 are connected in series and then connected with the external current limit pin of the switch chip U2; the resistor R11 is connected with the capacitor C8 in series and then connected with the capacitor C7 in parallel, and then connected between the control pin and the frequency pin of the switch chip U2 in parallel; an absorption loop is formed by the diode D3, the resistor R5 and the capacitor C6, one end of the absorption loop is connected with the transformer TR1, and the other end of the absorption loop is used as the output end of the bias winding; the capacitor C9 is connected in parallel to two ends of the bias winding of the transformer; the collector of the photoelectric coupler U1 is connected with the cathode of the diode D3, and the emitter of the photoelectric coupler U1 is connected with the control pin of the switch chip U2.
4. The power supply structure of claim 1, wherein the flyback main circuit comprises an off-line switch chip U2, a transformer TR1, a resistor R1, a resistor R15, capacitors C1 to C4, C13 and C14, an inductor L1, a diode D1, a light emitting diode D5, output terminals P2 and P3, the inductor L1, the capacitor C13 and the capacitor C14 form a pi-type filter circuit, the resistor R1 is connected in series with the capacitor C2 and then connected in parallel with the diode D1 to form an absorption loop, one end of the absorption loop is connected with the transformer TR1, the other end of the absorption loop is connected with the output terminals P2 and P3 through the pi-type filter circuit, the capacitors C4 and C3 are connected in parallel with two ends of the transformer, the resistor R15 is connected in series with the light emitting diode D5, then one end of the absorption loop is connected with the positive pole of the output voltage, and the other end of the secondary side is grounded to form a.
5. The power supply structure according to claim 1, characterized in that: the output voltage feedback loop comprises a resistor R12, a resistor R13, a resistor R14, a resistor R16, a resistor R17, capacitors C15 and C16, a voltage-stabilizing reference source Q1 and a photoelectric coupler U1;
the resistors R16 and R17 are connected in series and then connected in parallel at the output end; one end of the resistor R17 is connected with the reference end of the voltage-stabilizing reference source Q1, and the other end of the resistor R17 is connected with the anode of the Q1; the capacitor C15 is connected in parallel between the cathode of the voltage-stabilizing reference source Q1 and the reference end; the resistor R12 is connected with the capacitor C16 in series and then connected with the resistor R13 in parallel, one end of the resistor R12 is connected with the anode of the photoelectric coupler U1, and the other end of the resistor R3526 is connected to the secondary side of the transformer; the resistor R14 is connected in parallel between the cathode and the anode of the photoelectric coupler U1, and the cathode of the voltage-stabilizing reference source Q1 is connected with the cathode of the photoelectric coupler U1.
6. The power supply structure of claim 1, wherein the fast charging voltage conversion module comprises a synchronous switch buck conversion chip U1, an inductor L1, a resistor R1, a resistor R3, a capacitor C1 to a capacitor C14;
the input voltage is filtered by capacitors C11-C14 and then is connected to the input end of a buck conversion U1, one end of a resistor R3 is connected to a frequency adjustment pin of the buck conversion U1, the other end of the resistor R3 is grounded, one end of a capacitor C3 is connected to a bootstrap capacitor pin of a chip U1, the other end of the capacitor C3 is connected to a switch node of the chip, one end of an inductor L1 is connected to a switch node of the buck conversion U1, the other end of the inductor is connected to an output current limiting detection pin of the chip after being filtered by a capacitor C3, a capacitor C4, a capacitor C6 and a capacitor C7, and an output pin of.
7. The power supply structure according to claim 1, characterized in that: the first output circuit of the USBA port is the same as the second output circuit of the USBA port, and comprises a synchronous switch buck conversion chip U1, a USB interface Y1, a resistor R2 and capacitors C15-C18, wherein fast charge identification signal pins DM and DP of the buck conversion chip U1 are respectively connected with the USB interface Y1 after being filtered by the capacitors C17 and C18; the resistor R2 is used as a discharge resistor, one end of the resistor R2 is grounded, and the other end of the resistor R2 is connected with a voltage output pin of the buck conversion chip U1; the output pin of the buck conversion chip U1 is connected with the VCC end of the USB interface Y1 through the filter capacitors C15 and C16.
8. The power supply structure according to claim 1, characterized in that: the TYPE-C port fast charging identification output circuit comprises a synchronous switch voltage reduction conversion chip U1, a TYPE-C port Y2, capacitors C15 and C16 and a resistor R2; one end of the resistor R2 is grounded, and the other end is connected with a voltage output pin of the chip U1; an output pin of the chip U1 is connected with a power supply pin VBUS of a TYPE-C interface Y2 through filter capacitors C15 and C16; the DM pin of the chip U1 is connected with the data pins DN1 and DN2 of the interface Y2; the DP pin of the chip U1 is connected with the DP1 and DP2 of the interface Y2; the chip U1 detects that the pins CC1 and CC2 are respectively connected to the corresponding pins of the TYPE-C interface.
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| CN113972731A (en) * | 2021-09-16 | 2022-01-25 | 厦门讯亨电子科技有限公司 | Charger current conversion circuit |
| CN115313593A (en) * | 2022-08-04 | 2022-11-08 | 湖南炬神电子有限公司 | High-power supply charger |
| CN115865566A (en) * | 2022-12-17 | 2023-03-28 | 中国重汽集团济南动力有限公司 | Gateway controller suitable for commercial car |
| CN117220494A (en) * | 2023-11-09 | 2023-12-12 | 深圳市雅晶源科技有限公司 | Adjusting circuit for single-stage PFC (power factor correction) applied to quick-charging product and quick-charging product |
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| CN117220494B (en) * | 2023-11-09 | 2024-02-23 | 深圳市雅晶源科技有限公司 | Adjusting circuit for single-stage PFC (power factor correction) applied to quick-charging product and quick-charging product |
| CN117293978A (en) * | 2023-11-27 | 2023-12-26 | 合肥联宝信息技术有限公司 | Quick-charging interface circuit supporting wide voltage and electronic equipment |
| CN117293978B (en) * | 2023-11-27 | 2024-02-23 | 合肥联宝信息技术有限公司 | Quick-charging interface circuit supporting wide voltage and electronic equipment |
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Application publication date: 20200807 |