CN211791303U - Driving power supply circuit board - Google Patents
Driving power supply circuit board Download PDFInfo
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- CN211791303U CN211791303U CN202020099171.5U CN202020099171U CN211791303U CN 211791303 U CN211791303 U CN 211791303U CN 202020099171 U CN202020099171 U CN 202020099171U CN 211791303 U CN211791303 U CN 211791303U
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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 provides a driving power supply circuit board, it includes the circuit board main part, the AC input interface, electromagnetic interference filter circuit, rectification filter circuit, power factor corrects boost circuit, the step-down circuit, output filter circuit, direct current output interface, feedback voltage stabilizing circuit and pulse width modulator control circuit, the circuit board main part is used for connecting each circuit component, the AC input interface is used for inserting the alternating current, rectification filter circuit is used for rectification filtering, power factor corrects boost circuit and is used for improving the power factor of consumer, the step-down circuit is used for exporting the assigned voltage, direct current output interface includes 5V output interface and 12V output interface, a voltage condition for providing the direct current for the load, feedback voltage stabilizing circuit is used for the feedback output, pulse width modulator control circuit is used for overvoltage protection. The utility model discloses circuit factor of safety is high, effectively avoids high-power loss, and the practicality is good, has very wide application prospect.
Description
Technical Field
The utility model relates to a drive power supply circuit board field, in particular to drive power supply circuit board.
Background
The driving power supply circuit board is a power supply conversion device of small-sized portable electronic equipment and electronic appliances, generally comprises components such as a transformer, an inductor, a capacitor, a control IC (integrated circuit), a PCB (printed circuit board) and the like, has the working principle that alternating current input is converted into direct current output, and is widely matched with equipment such as a security camera, a set top box, a router, a light bar, a massager and the like.
In the prior art, the power supply of the driving power supply circuit board is single, and the power supply power loss is overlarge. Therefore, it is desirable to provide a driving power circuit board to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a drive power supply circuit board, it is through using electromagnetic interference filter circuit, rectification filter circuit, power factor correction boost circuit, step-down circuit and output filter circuit to export the alternating current for 5V direct current and 12V direct current to the drive power supply circuit board that solves among the prior art exists the power supply singlely more, and the power supply loss is too big, and the not reasonable problem of distribution inadequately of each part.
In order to solve the technical problem, the utility model adopts the technical scheme that:
a drive power supply circuit board, comprising:
a circuit board main body for connecting each circuit element;
the alternating current input interface is arranged on the circuit board main body, comprises a first input end and a second input end and is used for accessing alternating current;
the electromagnetic interference filter circuit is arranged on the circuit board main body, is connected with the alternating current input interface and is used for filtering;
the rectification filter circuit is arranged on the circuit board main body, is connected with the electromagnetic interference filter circuit and is used for rectification and filtering;
the power factor correction booster circuit is arranged on the circuit board main body, is connected with the rectification filter circuit and is used for improving the power factor of the electric equipment;
the voltage reduction circuit is arranged on the circuit board main body, is connected with the power factor correction voltage boosting circuit, comprises a 5V voltage reduction circuit and a 12V voltage reduction circuit and is used for outputting specified voltage;
the direct current output interface is arranged on the circuit board main body and comprises a 5V output interface and a 12V output interface, the 5V output interface is connected with the 5V voltage reduction circuit, and the 12V output interface is connected with the 12V voltage reduction circuit and used for providing direct current for a load;
the output filter circuit is arranged on the circuit board main body and comprises a 5V output filter circuit and a 12V output filter circuit, the 5V output filter circuit is connected between the 5V voltage reduction circuit and a 5V output interface, and the 12V output filter circuit is connected between the 12V voltage reduction circuit and the 12V output interface and used for filtering;
the feedback voltage stabilizing circuit is arranged on the circuit board main body and comprises a 5V feedback voltage stabilizing circuit and a 12V feedback voltage stabilizing circuit, the 5V feedback voltage stabilizing circuit is connected with the 5V output interface, and the 12V feedback voltage stabilizing circuit is connected with the 12V output interface and is used for feeding back the output voltage condition;
the pulse width modulator control circuit is arranged on the circuit board main body and comprises a 5V pulse width modulator control circuit and a 12V pulse width modulator control circuit, the 5V pulse width modulator control circuit is connected with the 5V feedback voltage stabilizing circuit and the 5V voltage reducing circuit, and the 12V pulse width modulator control circuit is connected with the 12V feedback voltage stabilizing circuit and the 12V voltage reducing circuit and used for overvoltage protection.
Drive power supply circuit board in, electromagnetic interference filter circuit includes:
the input end of the slow current-cut-off fuse is connected with the first input end of the alternating current input interface and is used for circuit protection;
one end of the piezoresistor is connected with the output end of the slow current-cut fuse, and the other end of the piezoresistor is connected with the second input end of the alternating current input interface and is used for inhibiting instability caused by transient voltage change;
the first end and the third end of the first common-mode inductor are connected to the two ends of the piezoresistor and used for filtering;
the two ends of the first capacitor are connected with the second end and the fourth end of the two first common-mode inductors and used for filtering;
and the first end and the third end of the second common-mode inductor are connected to the two ends of the first capacitor, and the second end and the fourth end form two output ends of the electromagnetic interference filter circuit for filtering.
Drive power supply circuit board in, rectification filter circuit includes:
the bridge stack comprises two alternating current input ends, a positive electrode output end and a negative electrode output end, and the two alternating current input ends are connected with the two output ends of the electromagnetic interference filter circuit and used for rectification;
the two ends of the second capacitor are connected with the positive electrode output end and the negative electrode output end of the bridge stack and used for charging and discharging;
one end of the first differential mode inductor is connected with the anode output end of the bridge stack, and the other end of the first differential mode inductor forms the output end of the rectification filter circuit and is used for filtering;
and one end of the third capacitor is connected with the negative electrode output end of the bridge stack, and the other end of the third capacitor is connected with the output end of the rectification filter circuit.
Drive power supply circuit board in, power factor correction boost circuit includes:
one end of the second differential mode inductor is connected with the output end of the rectifying and filtering circuit, and the other end of the second differential mode inductor forms the output end of the power factor correction booster circuit and is used for filtering;
one end of each of the two fourth capacitors is connected to the output end of the power factor correction booster circuit after being connected in parallel, and the other end of each of the two fourth capacitors is grounded and used for charging and discharging;
the power factor correction driver is used for improving the power factor of the electric equipment;
the source electrode of the first MOS tube is connected with the output end of the power factor correction booster circuit, the drain electrode of the first MOS tube is grounded, and the grid electrode of the first MOS tube is connected with the power factor correction driver and is used as a switch in the circuit;
and the diode is connected in parallel at two ends of the second differential-mode inductor and used for stabilizing the circuit.
Drive power supply circuit board in, 5V step-down circuit includes first transformer, 12V step-down circuit includes the second transformer, input of first transformer is connected the boost circuit output is rectified to the power factor, another input ground connection, the output is connected 5V output filter circuit, input of second transformer is connected boost circuit is rectified to the power factor, another input ground connection, the output is connected 12V output filter circuit.
Drive power supply circuit board in, 5V output filter circuit includes fifth electric capacity, 12V output filter circuit includes sixth electric capacity, and is three fifth electric capacity is parallelly connected, and parallelly connected back one end is connected first transformer output, other end ground connection, it is three sixth electric capacity is parallelly connected, parallelly connected back one end is connected second transformer output, other end ground connection.
Drive power supply circuit board in, 5V pulse width controller control circuit includes first paster IC and second MOS pipe, the second MOS pipe grid is connected first paster IC, the drain electrode meets first transformer input, source ground connection, first paster IC connects 5V feedback voltage stabilizing circuit.
Drive power supply circuit board in, 12V pulse width controller control circuit includes second paster IC and third MOS pipe, the third MOS pipe grid is connected second paster IC, the drain electrode meets second transformer input, source ground connection, second paster IC connects 12V feedback voltage stabilizing circuit.
The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a drive power supply circuit board exports 5V direct current and 12V direct current simultaneously, and its circuit factor of safety is high, effectively avoids high-power loss, and the practicality is good, has very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of the driving power supply circuit board of the present invention.
Fig. 2 is the electromagnetic interference filter circuit schematic diagram of the driving power supply circuit board of the present invention.
Fig. 3 is a schematic diagram of the rectifying and filtering circuit of the driving power supply circuit board of the present invention.
Fig. 4 is a schematic diagram of the power factor correction boost circuit of the driving power supply circuit board of the present invention.
Fig. 5 is a schematic diagram of the voltage reduction circuit of the driving power supply circuit board of the present invention.
Fig. 6 is a schematic diagram of an output filter circuit of the driving power supply circuit board of the present invention.
Fig. 7 is a schematic diagram of the feedback voltage stabilizing circuit of the driving power supply circuit board of the present invention.
Fig. 8 is a schematic diagram of the pulse width modulator control circuit of the driving power supply circuit board of the present invention.
Wherein, 1, a circuit board main body, 2, an AC input interface, 3, an electromagnetic interference filter circuit, 4, a rectification filter circuit, 5, a power factor correction booster circuit, 6, 5V buck circuits, 7, 12V buck circuits, 8, 5V output filter circuit, 9, 12V output filter circuit, 10, 5V output interface, 11, 12V output interface, 12, 5V feedback voltage stabilizing circuit, 13, 12V feedback voltage stabilizing circuit, 14, 5V pulse width modulator control circuit, 15, 12V pulse width modulator control circuit, 31, a slow current interruption fuse, 32, a piezoresistor, 33, a first common mode inductor, 34, a first capacitor, 35, a second common mode inductor, 41, a bridge stack, 42, a second capacitor, 43, a first differential mode inductor, 44, a third capacitor, 51, a second differential mode inductor, 52, a fourth capacitor, 53, a power factor correction driver, 54. the circuit comprises a first MOS transistor 55, a diode 61, a first transformer 71, a second transformer 81, a fifth capacitor 91, a sixth capacitor 121, a first optical coupler 122, a first chip resistor 131, a second optical coupler 132, a second chip resistor 141, a first chip IC 142, a second MOS transistor 151, a second chip IC 152 and a third MOS transistor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the prior art, the power supply of the driving power supply circuit board is single, and the power supply power loss is overlarge.
The present invention provides a driving power supply circuit board capable of solving the above technical problems.
The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.
In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a driving power circuit board according to the present invention.
A driving power supply circuit board comprises a circuit board main body 1, an alternating current input interface 2, an electromagnetic interference filter circuit 3, a rectification filter circuit 4, a power factor correction booster circuit 5, a voltage reduction circuit, an output filter circuit, a direct current output interface, a feedback voltage stabilizing circuit and a pulse width modulator control circuit, wherein the circuit board main body 1 is used for connecting circuit elements, the alternating current input interface 2 is arranged on the circuit board main body 1 and comprises a first input end and a second input end which are used for connecting alternating current, the electromagnetic interference filter circuit 3 is arranged on the circuit board main body 1 and is connected with the alternating current input interface for filtering, the rectification filter circuit 4 is arranged on the circuit board main body 1 and is connected with the electromagnetic interference filter circuit 3 for rectification filtering, the power factor correction booster circuit 5 is arranged on the circuit board main body 1 and is connected with the rectification filter circuit 4 and is used for improving the power factor of electric equipment, the step-down circuit sets up on circuit board main part 1, connects power factor correction boost circuit 5, including 5V step-down circuit 6 and 12V step-down circuit 7 for output specified voltage, direct current output interface sets up on circuit board main part 1, including 5V output interface 10 and 12V output interface 11, 5V output interface 10 connects 5V step-down circuit 6, 12V output interface 11 connects 12V step-down circuit 7, is used for providing the direct current for the load.
The output filter circuit is arranged on the circuit board main body 1 and comprises a 5V output filter circuit 8 and a 12V output filter circuit 9, the 5V output filter circuit 8 is connected between a 5V voltage reduction circuit 6 and a 5V output interface 10, the 12V output filter circuit 9 is connected between a 12V voltage reduction circuit 7 and a 12V output interface 11 and is used for filtering and feedback voltage stabilizing, the output filter circuit is arranged on the circuit board main body 1 and comprises a 5V feedback voltage stabilizing circuit 12 and a 12V feedback voltage stabilizing circuit 13, the 5V feedback voltage stabilizing circuit 12 is connected with the 5V output interface 10, the 12V feedback voltage stabilizing circuit 13 is connected with the 12V output interface 11 and is used for feeding back the voltage condition of output, the pulse width modulator control circuit is arranged on the circuit board main body 1 and comprises a 5V pulse width modulator control circuit 14 and a 12V pulse width modulator control circuit 15, the 5V pulse width modulator control circuit 14 is connected with the 5V feedback voltage stabilizing, the 12V pulse width modulator control circuit 15 is connected with the 12V feedback voltage stabilizing circuit 13 and the 12V voltage reduction circuit 7 and is used for overvoltage protection.
Referring to fig. 2, fig. 2 is a schematic diagram of an electromagnetic interference filter circuit of the driving power circuit board of the present invention.
The electromagnetic interference filter circuit 3 comprises a slow current cut-off fuse 31, a voltage dependent resistor 32, a first common mode inductor 33, a first capacitor 34 and a second common mode inductor 35, wherein the input end of the slow current cut-off fuse 31 is connected with the first input end of the alternating current input interface 2, for circuit protection, one end of the voltage dependent resistor 32 is connected with the output end of the slow current cut-off fuse 31, the other end is connected with the second input end of the AC input interface 2, for suppressing instability caused by voltage transient variation, the first terminal and the third terminal of the first common mode inductor 33 are connected to two terminals of the voltage dependent resistor 32, for filtering, the second terminal and the fourth terminal of the two first common mode inductors 33 are connected across the first capacitor 34, and the first end and the third end of the second common mode inductor 35 are connected to two ends of the first capacitor 34, and the second end and the fourth end form two output ends of the electromagnetic interference filter circuit 3 for filtering.
Referring to fig. 3, fig. 3 is a schematic diagram of a rectifying and filtering circuit of the driving power circuit board according to the present invention.
Rectifier filter circuit 4 includes bridge rectifier 41, second electric capacity 42, first differential mode inductance 43 and third electric capacity 44, bridge rectifier 41 includes two ac input end, anodal output and negative pole output, two output of electromagnetic interference filter circuit 3 are connected to two ac input end, be used for the rectification, bridge rectifier 41's anodal output and negative pole output are connected at second electric capacity 42 both ends, be used for charging and discharging, bridge rectifier 41's anodal output is connected to first differential mode inductance 43 one end, the other end forms rectifier filter circuit 4's output, be used for filtering, bridge rectifier 41's negative pole output is connected to third electric capacity 44 one end, rectifier filter circuit 4's output is connected to one end.
Referring to fig. 4, fig. 4 is a schematic diagram of a power factor correction boost circuit of a driving power circuit board according to the present invention.
The power factor correction booster circuit 5 comprises a second differential mode inductor 51, a fourth capacitor 52, a power factor correction driver 53, a first MOS (metal oxide semiconductor) tube 54 and a diode 55, wherein one end of the second differential mode inductor 51 is connected with the output end of the rectification filter circuit 4, the other end of the second differential mode inductor forms the output end of the power factor correction booster circuit 5 and is used for filtering, after the two fourth capacitors 52 are connected in parallel, one end of the second differential mode inductor is connected with the output end of the power factor correction booster circuit 5, the other end of the second differential mode inductor is grounded and is used for charging and discharging, the power factor correction driver 53 is used for improving the power factor of electric equipment, the source electrode of the first MOS tube 54 is connected with the output end of the power factor correction booster circuit 5, the drain electrode of the first MOS tube is grounded, the grid electrode.
Referring to fig. 5, fig. 5 is a schematic diagram of a voltage step-down circuit of the driving power circuit board of the present invention.
The 5V voltage reduction circuit 6 comprises a first transformer 61, the 12V voltage reduction circuit 7 comprises a second transformer 71, one input end of the first transformer 61 is connected with the output end of the power factor correction voltage boosting circuit 5, the other input end of the first transformer is grounded, the output end of the first transformer is connected with the 5V output filter circuit 8, one input end of the second transformer 71 is connected with the power factor correction voltage boosting circuit 5, the other input end of the second transformer is grounded, and the output end of the second transformer is connected with the 12V output filter circuit 9.
Referring to fig. 6, fig. 6 is a schematic diagram of an output filter circuit of the driving power circuit board according to the present invention.
The 5V output filter circuit 8 comprises a fifth capacitor 81, the 12V output filter circuit 9 comprises a sixth capacitor 91, the three fifth capacitors 81 are connected in parallel, one end of each fifth capacitor is connected with the output end of the first transformer 61 after being connected in parallel, the other end of each fifth capacitor is grounded, the three sixth capacitors 91 are connected in parallel, one end of each sixth capacitor is connected with the output end of the second transformer 71 after being connected in parallel, and the other end of each sixth capacitor is grounded.
Referring to fig. 7, fig. 7 is a schematic diagram of a feedback voltage stabilizing circuit of a driving power circuit board according to the present invention.
The 5V feedback regulation circuit 12 includes a first optocoupler 121 and a first chip resistor 122, the 12V feedback regulation circuit 13 includes a second optocoupler 131 and a second chip resistor 132, the positive electrode of the transmitting end of the first optical coupler 121 is connected to the positive electrode of the 5V output interface 10, the negative electrode of the transmitting end of the first optical coupler 121 is grounded, the first chip resistor 122 is connected in parallel to the two transmitting ends of the first optical coupler 121, the positive electrode of the receiving end of the first optical coupler 121 is connected to the 5V pulse width controller control circuit 14, the negative electrode of the receiving end of the first optical coupler 121 is grounded, the positive electrode of the transmitting end of the second optical coupler 131 is connected to the positive electrode of the 12V output interface 11, the negative electrode of the transmitting end of the second optical coupler 131 is grounded, the second chip resistor 132 is connected in parallel to the two transmitting ends of the second optical coupler 131, the positive electrode of the receiving end of the second optical coupler 131 is connected to the 12V pulse width controller control circuit 15, and the.
Referring to fig. 8, fig. 8 is a schematic diagram of a control circuit of a pulse width modulator of a driving power circuit board according to the present invention.
The 5V pulse width controller control circuit 14 comprises a first patch IC141 and a second MOS tube 142, the grid electrode of the second MOS tube 142 is connected with the first patch IC141, the drain electrode is connected with the input end of the first transformer 61, the source electrode is grounded, the first patch IC141 is connected with the 5V feedback voltage stabilizing circuit 12, the 12V pulse width controller control circuit 15 comprises a second patch IC151 and a third MOS tube 152, the grid electrode of the third MOS tube 152 is connected with the second patch IC151, the drain electrode is connected with the input end of the second transformer 71, the source electrode is grounded, and the second patch IC151 is connected with the 12V feedback voltage stabilizing circuit 13.
The utility model discloses a theory of operation: an alternating current power supply is communicated with an alternating current input interface 2, the alternating current power supply is filtered by an electromagnetic interference filter circuit 3, the alternating current power supply is rectified and filtered by a rectification filter circuit 4, the power factor of electric equipment is improved by a power factor correction booster circuit 5, then the voltage is reduced by a 5V voltage reduction circuit 6 and a 12V voltage reduction circuit 7, the alternating current power supply is filtered by a 5V output filter circuit 8 and a 12V output filter circuit 9 and reaches a 5V output interface 10 and a 12V output interface 11 for providing direct current for a load, a 5V feedback voltage stabilizing circuit 12 is connected with the 5V output interface 10, a 12V feedback voltage stabilizing circuit 13 is connected with the 12V output interface 11 for feeding back the output voltage condition, a 5V pulse width modulator control circuit 14 is connected with the 5V feedback voltage stabilizing circuit 12 and the 5V voltage reduction circuit 6, a 12V pulse width modulator control circuit 15 is connected with, the overvoltage protection circuit is used for overvoltage protection and ensures the stability of output voltage.
This completes the operation of the driving power supply circuit board of the preferred embodiment to output the alternating current of 5V direct current and 12V direct current.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A drive power supply circuit board characterized by comprising:
a circuit board main body for connecting each circuit element;
the alternating current input interface is arranged on the circuit board main body, comprises a first input end and a second input end and is used for accessing alternating current;
the electromagnetic interference filter circuit is arranged on the circuit board main body, is connected with the alternating current input interface and is used for filtering;
the rectification filter circuit is arranged on the circuit board main body, is connected with the electromagnetic interference filter circuit and is used for rectification and filtering;
the power factor correction booster circuit is arranged on the circuit board main body, is connected with the rectification filter circuit and is used for improving the power factor of the electric equipment;
the voltage reduction circuit is arranged on the circuit board main body, is connected with the power factor correction voltage boosting circuit, comprises a 5V voltage reduction circuit and a 12V voltage reduction circuit and is used for outputting specified voltage;
the direct current output interface is arranged on the circuit board main body and comprises a 5V output interface and a 12V output interface, the 5V output interface is connected with the 5V voltage reduction circuit, and the 12V output interface is connected with the 12V voltage reduction circuit and used for providing direct current for a load.
2. The drive power supply circuit board according to claim 1, further comprising:
output filter circuit sets up in the circuit board main part, including 5V output filter circuit and 12V output filter circuit, 5V output filter circuit connects between 5V step-down circuit and the 5V output interface, 12V output filter circuit connects 12V step-down circuit with between the 12V output interface for the filtering.
3. The drive power supply circuit board according to claim 2, characterized by further comprising:
the feedback voltage stabilizing circuit is arranged on the circuit board main body and comprises a 5V feedback voltage stabilizing circuit and a 12V feedback voltage stabilizing circuit, the 5V feedback voltage stabilizing circuit is connected with the 5V output interface, and the 12V feedback voltage stabilizing circuit is connected with the 12V output interface and is used for feeding back the output voltage condition;
the pulse width modulator control circuit is arranged on the circuit board main body and comprises a 5V pulse width modulator control circuit and a 12V pulse width modulator control circuit, the 5V pulse width modulator control circuit is connected with the 5V feedback voltage stabilizing circuit and the 5V voltage reducing circuit, and the 12V pulse width modulator control circuit is connected with the 12V feedback voltage stabilizing circuit and the 12V voltage reducing circuit and used for overvoltage protection.
4. The drive power supply circuit board according to claim 1, wherein the electromagnetic interference filter circuit includes:
the input end of the slow current-cut-off fuse is connected with the first input end of the alternating current input interface and is used for circuit protection;
one end of the piezoresistor is connected with the output end of the slow current-cut fuse, and the other end of the piezoresistor is connected with the second input end of the alternating current input interface and is used for inhibiting instability caused by transient voltage change;
the first end and the third end of the first common-mode inductor are connected to the two ends of the piezoresistor and used for filtering;
the two ends of the first capacitor are connected with the second end and the fourth end of the two first common-mode inductors and used for filtering;
and the first end and the third end of the second common-mode inductor are connected to the two ends of the first capacitor, and the second end and the fourth end form two output ends of the electromagnetic interference filter circuit for filtering.
5. The drive power supply circuit board according to claim 1, wherein the rectification filter circuit includes:
the bridge stack comprises two alternating current input ends, a positive electrode output end and a negative electrode output end, and the two alternating current input ends are connected with the two output ends of the electromagnetic interference filter circuit and used for rectification;
the two ends of the second capacitor are connected with the positive electrode output end and the negative electrode output end of the bridge stack and used for charging and discharging;
one end of the first differential mode inductor is connected with the anode output end of the bridge stack, and the other end of the first differential mode inductor forms the output end of the rectification filter circuit and is used for filtering;
and one end of the third capacitor is connected with the negative electrode output end of the bridge stack, and the other end of the third capacitor is connected with the output end of the rectification filter circuit.
6. The drive power supply circuit board according to claim 1, wherein the power factor correction boosting circuit includes:
one end of the second differential mode inductor is connected with the output end of the rectifying and filtering circuit, and the other end of the second differential mode inductor forms the output end of the power factor correction booster circuit and is used for filtering;
one end of each of the two fourth capacitors is connected to the output end of the power factor correction booster circuit after being connected in parallel, and the other end of each of the two fourth capacitors is grounded and used for charging and discharging;
the power factor correction driver is used for improving the power factor of the electric equipment;
the source electrode of the first MOS tube is connected with the output end of the power factor correction booster circuit, the drain electrode of the first MOS tube is grounded, and the grid electrode of the first MOS tube is connected with the power factor correction driver and is used as a switch in the circuit;
and the diode is connected in parallel at two ends of the second differential-mode inductor and used for stabilizing the circuit.
7. The circuit board of claim 3, wherein the 5V buck circuit comprises a first transformer, the 12V buck circuit comprises a second transformer, the first transformer has one input connected to the output of the power factor correction boost circuit, the other input connected to ground, the output connected to the 5V output filter circuit, the second transformer has one input connected to the power factor correction boost circuit, the other input connected to ground, and the output connected to the 12V output filter circuit.
8. The circuit board of claim 7, wherein the 5V output filter circuit comprises a fifth capacitor, the 12V output filter circuit comprises a sixth capacitor, three of the fifth capacitors are connected in parallel, one end of the parallel connection is connected to the output end of the first transformer, the other end of the parallel connection is grounded, three of the sixth capacitors are connected in parallel, one end of the parallel connection is connected to the output end of the second transformer, and the other end of the parallel connection is grounded.
9. The circuit board of claim 7, wherein the 5V pulse width controller control circuit comprises a first chip IC and a second MOS transistor, the gate of the second MOS transistor is connected to the first chip IC, the drain of the second MOS transistor is connected to the input end of the first transformer, the source of the second MOS transistor is grounded, and the first chip IC is connected to the 5V feedback voltage stabilizing circuit.
10. The circuit board of claim 7, wherein the 12V pulse width controller control circuit comprises a second chip IC and a third MOS transistor, the gate of the third MOS transistor is connected to the second chip IC, the drain of the third MOS transistor is connected to the input end of the second transformer, the source of the third MOS transistor is grounded, and the second chip IC is connected to the 12V feedback voltage stabilizing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020099171.5U CN211791303U (en) | 2020-01-16 | 2020-01-16 | Driving power supply circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020099171.5U CN211791303U (en) | 2020-01-16 | 2020-01-16 | Driving power supply circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211791303U true CN211791303U (en) | 2020-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020099171.5U Active CN211791303U (en) | 2020-01-16 | 2020-01-16 | Driving power supply circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211791303U (en) |
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2020
- 2020-01-16 CN CN202020099171.5U patent/CN211791303U/en active Active
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