CN218633707U - Constant voltage power supply for PCB - Google Patents

Constant voltage power supply for PCB Download PDF

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Publication number
CN218633707U
CN218633707U CN202223145005.2U CN202223145005U CN218633707U CN 218633707 U CN218633707 U CN 218633707U CN 202223145005 U CN202223145005 U CN 202223145005U CN 218633707 U CN218633707 U CN 218633707U
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pcb
resistor
module
power supply
capacitor
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CN202223145005.2U
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罗正海
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Shenzhen Ococci Technology Co ltd
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Shenzhen Ococci Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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Abstract

The utility model discloses a stabilized voltage supply for a PCB, which relates to the technical field of power supply, and comprises a power supply adjusting module and a low voltage adjusting module, wherein the power supply adjusting module and the low voltage adjusting module are used for voltage reduction and voltage stabilization adjustment so as to provide stabilized voltage for the PCB module; the electric energy control module is used for controlling electric energy transmission; the PCB module is used for being connected with the PCB; the PCB detection module is used for detecting the connection state of the PCB module and the PCB through the current detection circuit; the detection control module is used for controlling the work of the PCB detection module; and the timing control module is used for controlling the work of the detection control module and the electric energy control module in a timing mode. The utility model discloses constant voltage power supply for PCB all steps down and the steady voltage is handled by power regulation module and low pressure regulating module to the electric energy of input to detect PCB module and PCB's situation of being connected through the current detection circuit, so that timing control electric energy control module and PCB detection module's work provides required direct current steady voltage for PCB automatically.

Description

Voltage-stabilized power supply for PCB
Technical Field
The utility model relates to the technical field of power, specifically a constant voltage power supply for PCB.
Background
PCB (Printed Circuit Board), also known as Printed Circuit Board, important electronic parts, be electronic components's supporter, be electronic components electrical interconnect's carrier, for guaranteeing PCB's reliable and stable work, need provide constant voltage power supply to it, current stabilized voltage power supply for PCB adopts linear steady voltage control Circuit mostly, low dropout regulator (LDO) Circuit promptly, supply power for PCB through artificial control constant voltage power supply, it is comparatively troublesome, and can't learn whether PCB connects successfully, easily because connect the unstable supply power that leads to and change, consequently, await the improvement.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a constant voltage power supply for PCB to solve the problem that proposes in the above-mentioned background art.
According to the embodiment of the utility model provides an in, provide a constant voltage power supply for PCB, this constant voltage power supply for PCB includes: the device comprises a power supply adjusting module, an electric energy control module, a low-voltage adjusting module, a PCB detection module, a detection control module and a timing control module;
the power supply adjusting module is used for carrying out voltage reduction adjustment on input electric energy and outputting stabilized voltage;
the electric energy control module is connected with the power supply regulating module and is used for transmitting the electric energy output by the power supply regulating module to the low-voltage regulating module;
the low-voltage adjusting module is connected with the electric energy control module and is used for carrying out voltage reduction and voltage stabilization processing on the electric energy transmitted by the electric energy control module and outputting the electric energy;
the PCB module is connected with the low-voltage regulating module, is used for receiving the electric energy output by the low-voltage regulating module and is connected with a power supply end of a PCB;
the PCB detection module is connected with the PCB module and used for detecting the connection state of the PCB module and a PCB through a current detection circuit and outputting a control signal;
the detection control module is connected with the PCB detection module and is used for controlling the working state of the PCB detection module through a power tube circuit;
the timing control module is connected with the detection control module, the PCB detection module and the electric energy control module and used for receiving the control signal output by the PCB detection module and controlling the working states of the detection control module and the electric energy control module in a timing mode through the timing control circuit.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses constant voltage power supply for PCB is stepped down and the steady voltage is handled by power conditioning module and low pressure regulating module respectively to the electric energy of input, wherein by electric energy control module control input low pressure regulating module's electric energy, and by the required work steady voltage of low pressure regulating module output PCB board, PCB detection module passes through the situation of being connected of current detection circuit detection PCB module and PCB, and when PCB normally connects, by timing control module timing control electric energy control module and PCB detection module's work, accomplish the power and normally be connected the back with PCB, automatically for PCB provides required direct current steady voltage, control is simple and avoid because connect the change that the shakiness leads to supply power, improve the steady voltage power supply precision to PCB.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a regulated power supply for a PCB provided by an embodiment of the present invention.
Fig. 2 is a circuit diagram of a regulated power supply for a PCB provided by an embodiment of the present invention.
Fig. 3 is a circuit diagram of a timing control module according to an embodiment of the present invention.
Description of the preferred embodiment
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 a person skilled in the art without creative work belong to the protection scope of the present invention.
In embodiment 1, referring to fig. 1, a regulated power supply for a PCB includes: the system comprises a power supply adjusting module 1, an electric energy control module 2, a low-voltage adjusting module 3, a PCB module 4, a PCB detection module 5, a detection control module 6 and a timing control module 7;
specifically, the power supply regulating module 1 is configured to perform voltage reduction regulation on input electric energy and output voltage stabilization;
the electric energy control module 2 is connected with the power supply regulating module 1 and is used for transmitting the electric energy output by the power supply regulating module 1 to the low-voltage regulating module 3;
the low-voltage adjusting module 3 is connected with the electric energy control module 2 and is used for performing voltage reduction and voltage stabilization processing on the electric energy transmitted by the electric energy control module 2 and outputting the electric energy;
the PCB module 4 is connected with the low-voltage regulating module 3, and is used for receiving the electric energy output by the low-voltage regulating module 3 and connecting the electric energy with a power supply end of a PCB;
the PCB detection module 5 is connected with the PCB module 4 and used for detecting the connection state of the PCB module 4 and a PCB through a current detection circuit and outputting a control signal;
the detection control module 6 is connected with the PCB detection module and is used for controlling the working state of the PCB detection module 5 through a power tube circuit;
and the timing control module 7 is connected with the detection control module 6, the PCB detection module 5 and the electric energy control module 2 and is used for receiving the control signal output by the PCB detection module 5 and controlling the working states of the detection control module 6 and the electric energy control module 2 in a timing mode through a timing control circuit.
In a specific embodiment, the power supply regulating module 1 may adopt a special voltage-reducing regulating circuit to perform voltage-reducing and voltage-stabilizing control on the input dc power; the electric energy control module 2 can adopt a power tube switching circuit to transmit the electric energy output by the power supply regulating module 1; the low-voltage regulating module 3 can adopt a special voltage-reducing regulating circuit to further reduce and stabilize the input voltage; the PCB module 4 is used as a connecting port for transmitting the electric energy output by the low-voltage regulating module 3 and is connected with a power supply end of the PCB; the PCB detection module 5 can adopt a current detection circuit and an auxiliary power supply circuit, the auxiliary power supply circuit provides low voltage for the PCB connected with the PCB module 4, and the current detection circuit detects whether the PCB is connected with the PCB module 4; the detection control module 6 can adopt a power tube circuit and is used for transmitting the electric energy output by the auxiliary power supply circuit; the timing control module 7 may adopt a timing control circuit to control the working states of the detection control module 6 and the power control module 2 in a timing manner.
Embodiment 2, referring to fig. 2 and fig. 3 based on embodiment 1, the power supply adjusting module 1 includes a dc power supply, a first capacitor C1, a first voltage regulator IC1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first inductor L1, a first resistor R1, a second resistor R2, and a fifth capacitor C5;
specifically, the direct current power supply is connected to one end of a first capacitor C1, a seventh end and an eighth end of a first voltage stabilizing regulator IC1, the first end of the first regulator is connected to the second end of the first voltage stabilizing regulator IC1 and the first end of a first inductor L1 through a second capacitor C2, the second end of the first inductor L1 is connected to one end of a first resistor R1 and is connected to the other end of the first resistor R1, one end of a second resistor R2 and the fifth end of the first voltage stabilizing regulator IC1 through a fifth capacitor C5, the sixth end of the first voltage stabilizing regulator IC1 is grounded through a fourth capacitor C4, the fourth end of the first voltage stabilizing regulator IC1 is grounded through a third capacitor C3, and the other end of the first capacitor C1, the ninth end of the first voltage stabilizing regulator IC1 and the other end of the second capacitor C2 are grounded.
In one embodiment, the first voltage regulator IC1 may be, but not limited to, PW2332, and converts the input power into a voltage of 3V to 5V, and specifically, the output power may be changed by adjusting a voltage division value output by the first resistor R1 and the second resistor R2.
Further, the electric energy control module 2 includes a third resistor R3, a first switch tube VT1, a first voltage regulator tube VD1, a first power tube Q1, a fourth resistor R4, and a sixth capacitor C6;
specifically, one end of the third resistor R3 and the first end of the sixth capacitor C6 are connected to the second end of the first inductor L1, the other end of the third resistor R3 is connected to a collector of the first switch tube VT1, a base of the first switch tube VT1 is connected to the first end of the fourth resistor R4, an emitter of the first switch tube VT1 is connected to a cathode of the first voltage regulator tube VD1 and a gate of the first power tube Q1, a source of the first power tube Q1 is connected to an anode of the first voltage regulator tube VD1 and the ninth end of the first voltage regulator IC1, the second end of the fourth resistor R4 is connected to the timing control module 7, and a drain of the first power tube Q1 is connected to the second end of the sixth capacitor C6.
In an embodiment, the first switching transistor VT1 may be an NPN transistor, configured to control a working state of the first power transistor Q1; the first power tube Q1 may be an N-channel enhancement MOS tube, and controls transmission of electric energy output by the power supply adjusting module 1.
Further, the low voltage regulation module 3 includes a seventh capacitor C7, a second voltage regulation regulator IC2, a fifth resistor R5, a sixth resistor R6, and a first potentiometer RP1; the PCB module 4 includes a PCB connection port;
specifically, one end of the seventh capacitor C7 is connected to the input end of the second voltage regulator IC2 and the first end of the sixth capacitor C6, the feedback end of the second voltage regulator IC2 is connected to the slider end of the first potentiometer RP1 through the fifth resistor R5, the output end of the second voltage regulator IC2 is connected to one end of the first potentiometer RP1 and the first end of the PCB connection port, and the other end of the first potentiometer RP1 is connected to the other end of the seventh capacitor C7, the second end of the sixth capacitor C6 and the ground through the sixth resistor R6.
In an embodiment, the second regulator may be selected, but not limited to the AMS1117 chip, and regulate the input power to a regulated voltage of 1.8V or 1.2V to provide a stable power for the PCB, and the output power may be regulated according to the resistance of the first potentiometer RP1, which is not described herein.
Further, the PCB detection module 5 includes an auxiliary power supply, an eighth capacitor C8, a first diode D1, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first operational amplifier OP1, a tenth resistor R10, and a sixteenth resistor R16;
specifically, the first end of the auxiliary power supply is connected to one end of an eighth capacitor C8 and the anode of the first diode D1, the cathode of the first diode D1 is connected to the second end of the PCB connection port, the first end of the seventh resistor R7 is connected to the third end of the PCB connection port and is connected to the non-inverting end of the first operational amplifier OP1 and one end of the sixteenth resistor R16 through the eighth resistor R8, the other end of the sixteenth resistor R16 is grounded, the inverting end of the first operational amplifier OP1 is connected to one end of the tenth resistor R10 and is connected to the second end and the ground end of the seventh resistor R7 through the ninth resistor R9, and the other end of the tenth resistor R10 is connected to the output end of the first operational amplifier OP1 and the timing control module 7.
In an embodiment, the seventh resistor R7 is used as a current sampling resistor to detect the power flowing through the PCB connection port; the first operational amplifier OP1 may use an OP07 operational amplifier to convert the current signal sampled by the seventh resistor R7 into a voltage signal and amplify the voltage signal.
Further, the timing control module 7 includes a first power supply VCC1, a second power supply VCC2, a thirteenth resistor R13, a fourteenth resistor R14, a ninth capacitor C9, a second diode D2, a fifteenth resistor R15, a first timer IC3, and a tenth capacitor C10;
specifically, the first power source VCC1 is connected to a collector of a third switching tube, the second power source VCC2 is connected to a base of the third switching tube and one end of a fourteenth resistor R14 through a thirteenth resistor R13, the other end of the fourteenth resistor R14 is connected to an output end of the first operational amplifier OP1, an emitter of the third switching tube is connected to one end of a ninth capacitor C9, a fourth end and an eighth end of the first timer IC3, the other end of the ninth capacitor C9 is connected to a cathode of the second diode D2, one end of the fifteenth resistor R15, a sixth end and a second end of the first timer IC3, a fifth end of the first timer IC3 is connected to a first end of the first timer IC3, the other end of the fifteenth resistor R15, an anode of the second diode D2 and a ground end through a tenth capacitor C10, and a third end of the first timer IC3 is connected to a second end of the fourth resistor R4.
In an embodiment, the first timer IC3 may select an NE555 timer, and a ninth capacitor C9, a second diode D2, a fifteenth resistor R15, and a tenth resistor R10 are used to form a timing control circuit, so as to output a low-level signal at a fixed time and continuously output a high-level signal; the third switching tube can be an NPN type triode and is used for controlling the electric energy input into the first timer IC 3.
Further, the detection control module 6 includes a twelfth resistor R12, a second power tube Q2, a second switching tube VT2, and an eleventh resistor R11;
specifically, one end of the twelfth resistor R12 is connected to the first end of the auxiliary power supply, the other end of the twelfth resistor R12 is connected to the gate of the second power transistor Q2 and the collector of the second switching transistor VT2, the base of the second switching transistor VT2 is connected to the third end of the first timer IC3 through the eleventh resistor R11, the emitter of the second switching transistor VT2 is connected to the drain of the second power transistor Q2 and the second end of the seventh resistor R7, and the source of the second power transistor Q2 is connected to the second end of the auxiliary power supply.
In an embodiment, the second power transistor Q2 may be an NPN transistor, configured to control power transmission of the auxiliary power source, and the second switching transistor VT2 controls a turn-off state thereof; the second switching tube VT2 may be an NPN transistor, and is controlled by the first timer IC 3.
The utility model relates to a constant voltage power supply for PCB, when PCB connection port is not connected with PCB, first power tube Q1 ends, low pressure adjusting module 3 is out of work, the unable normal supply of power, when PCB connection port is connected with PCB, provide the low-voltage by auxiliary power supply for PCB, and carry out the current sampling through seventh resistance R7, first operational OP1 is converted current signal into voltage signal and amplification transmission, control third switch tube switches on, make first timer IC3 work with the electricity, export the low level earlier when the work begins, then continuously export the high level, the first switch tube VT1 of high level control of output and second switch tube VT2 switch on, make first power tube Q1 switch on, low pressure adjusting module 3 receives the electric energy of power adjusting module 1 output and provides 1.8V or 1.2V's steady voltage for PCB, second power tube Q2 ends simultaneously, auxiliary power supply stops supplying power, PCB detection module 5 stops working, but seventh resistance R7 still carries out the current sampling, guarantee first constant time ware IC 3's work until continuously providing for PCB, power adjusting module output stops the power output and stops.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A stabilized voltage power supply for PCB is characterized in that,
this constant voltage power supply for PCB includes: the device comprises a power supply adjusting module, an electric energy control module, a low-voltage adjusting module, a PCB detection module, a detection control module and a timing control module;
the power supply adjusting module is used for carrying out voltage reduction adjustment on input electric energy and outputting stabilized voltage;
the electric energy control module is connected with the power supply regulating module and is used for transmitting the electric energy output by the power supply regulating module to the low-voltage regulating module;
the low-voltage regulating module is connected with the electric energy control module and is used for carrying out voltage reduction and voltage stabilization processing on the electric energy transmitted by the electric energy control module and outputting the electric energy;
the PCB module is connected with the low-voltage regulating module, is used for receiving the electric energy output by the low-voltage regulating module and is connected with a power supply end of a PCB;
the PCB detection module is connected with the PCB module and used for detecting the connection state of the PCB module and a PCB through a current detection circuit and outputting a control signal;
the detection control module is connected with the PCB detection module and is used for controlling the working state of the PCB detection module through a power tube circuit;
the timing control module is connected with the detection control module, the PCB detection module and the electric energy control module and used for receiving the control signal output by the PCB detection module and controlling the working states of the detection control module and the electric energy control module in a timing mode through the timing control circuit.
2. The regulated power supply for the PCB of claim 1, wherein the power supply regulation module comprises a direct current power supply, a first capacitor, a first voltage regulator, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a first resistor, a second resistor and a fifth capacitor;
the direct current power supply is connected with one end of a first capacitor, a seventh end and an eighth end of a first voltage stabilizing regulator, the first end of the first regulator is connected with the second end of the first voltage stabilizing regulator and the first end of a first inductor through a second capacitor, the second end of the first inductor is connected with one end of a first resistor and is connected with the other end of the first resistor, one end of a second resistor and the fifth end of the first voltage stabilizing regulator through a fifth capacitor, the sixth end of the first voltage stabilizing regulator is grounded through a fourth capacitor, the fourth end of the first voltage stabilizing regulator is grounded through a third capacitor, and the other end of the first capacitor, the ninth end of the first voltage stabilizing regulator and the other end of the second capacitor are grounded.
3. The regulated power supply for the PCB of claim 2, wherein the electric energy control module comprises a third resistor, a first switch tube, a first voltage regulator tube, a first power tube, a fourth resistor and a sixth capacitor;
one end of the third resistor and the first end of the sixth capacitor are connected with the second end of the first inductor, the other end of the third resistor is connected with a collector of a first switch tube, a base of the first switch tube is connected with the first end of the fourth resistor, an emitter of the first switch tube is connected with a cathode of a first voltage stabilizing tube and a grid of a first power tube, a source of the first power tube is connected with an anode of the first voltage stabilizing tube and the ninth end of the first voltage stabilizing regulator, the second end of the fourth resistor is connected with the timing control module, and a drain of the first power tube is connected with the second end of the sixth capacitor.
4. The regulated power supply for the PCB of claim 3, wherein the low voltage regulation module comprises a seventh capacitor, a second voltage regulation device, a fifth resistor, a sixth resistor and a first potentiometer; the PCB module comprises a PCB connection port;
one end of the seventh capacitor is connected with the input end of the second voltage stabilizing regulator and the first end of the sixth capacitor, the feedback end of the second voltage stabilizing regulator is connected with the slide end of the first potentiometer through a fifth resistor, the output end of the second voltage stabilizing regulator is connected with one end of the first potentiometer and the first end of the PCB connecting port, and the other end of the first potentiometer is connected with the other end of the seventh capacitor, the second end of the sixth capacitor and the ground end through a sixth resistor.
5. The regulated power supply for the PCB of claim 4, wherein the PCB detection module comprises an auxiliary power supply, an eighth capacitor, a first diode, a seventh resistor, an eighth resistor, a ninth resistor, a first operational amplifier, a tenth resistor and a sixteenth resistor;
the first end of auxiliary power source connects the one end of eighth electric capacity and the positive pole of first diode, and the negative pole of first diode is connected the second end of PCB connection port, the third end of PCB connection port is connected to the first end of seventh resistance and the homophase end that first fortune was put and the one end of sixteenth resistance are connected through eighth resistance, the other end ground connection of sixteenth resistance, the one end of tenth resistance is connected to the inverting terminal that first fortune was put and the second end and the ground terminal of seventh resistance are connected through ninth resistance, the output that first fortune was put is connected to the other end of tenth resistance with timing control module.
6. The regulated power supply for the PCB of claim 5, wherein the timing control module comprises a first power supply, a second power supply, a thirteenth resistor, a fourteenth resistor, a ninth capacitor, a second diode, a fifteenth resistor, a first timer and a tenth resistor;
the first power supply is connected with a collector of a third switching tube, the second power supply is connected with a base of the third switching tube and one end of a fourteenth resistor through a thirteenth resistor, the other end of the fourteenth resistor is connected with an output end of the first operational amplifier, an emitter of the third switching tube is connected with one end of a ninth capacitor, a fourth end and an eighth end of a first timer, the other end of the ninth capacitor is connected with a cathode of a second diode, one end of a fifteenth resistor, a sixth end and a second end of the first timer, a fifth end of the first timer is connected with a first end of the first timer, the other end of the fifteenth resistor, an anode of the second diode and a ground end through a tenth capacitor, and a third end of the first timer is connected with a second end of the fourth resistor.
7. The regulated power supply for the PCB of claim 6, wherein the detection control module comprises a twelfth resistor, a second power tube, a second switch tube and an eleventh resistor;
one end of the twelfth resistor is connected with the first end of the auxiliary power supply, the other end of the twelfth resistor is connected with the grid electrode of the second power tube and the collector electrode of the second switch tube, the base electrode of the second switch tube is connected with the third end of the first timer through the eleventh resistor, the emitter electrode of the second switch tube is connected with the drain electrode of the second power tube and the second end of the seventh resistor, and the source electrode of the second power tube is connected with the second end of the auxiliary power supply.
CN202223145005.2U 2022-11-26 2022-11-26 Constant voltage power supply for PCB Active CN218633707U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223145005.2U CN218633707U (en) 2022-11-26 2022-11-26 Constant voltage power supply for PCB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223145005.2U CN218633707U (en) 2022-11-26 2022-11-26 Constant voltage power supply for PCB

Publications (1)

Publication Number Publication Date
CN218633707U true CN218633707U (en) 2023-03-14

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CN (1) CN218633707U (en)

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