CN213585577U - Voltage stabilizing circuit and intelligent device with same - Google Patents
Voltage stabilizing circuit and intelligent device with same Download PDFInfo
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- CN213585577U CN213585577U CN202022752817.8U CN202022752817U CN213585577U CN 213585577 U CN213585577 U CN 213585577U CN 202022752817 U CN202022752817 U CN 202022752817U CN 213585577 U CN213585577 U CN 213585577U
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Abstract
The utility model discloses a voltage stabilizing circuit and an intelligent device provided with the same, wherein the voltage stabilizing circuit comprises a power input end, a first voltage conversion circuit, a switch control circuit, an energy storage circuit, a second voltage conversion circuit and a power output end; the first voltage conversion circuit is electrically connected with the power supply, and the first voltage conversion circuit is respectively electrically connected with the energy storage circuit and the power supply output end through the switch circuit; the input end of the second voltage conversion circuit is electrically connected with the output end of the energy storage circuit, and the output end of the second voltage conversion circuit is electrically connected with the output end of the power supply through the switch circuit; the switch circuit is electrically connected with the switch control circuit, and the switch control circuit controls the switch circuit to be switched on and switched off so as to control the first voltage conversion circuit or the second voltage conversion circuit to be switched on with the power output end. It can be seen that, the utility model discloses a voltage stabilizing circuit makes smart machine's main circuit after the outage, and secondary circuit can continue work, saves, handles etc. data, recreation progress.
Description
Technical Field
The utility model relates to an intelligence product technology field especially relates to a voltage stabilizing circuit and be equipped with smart machine of this circuit.
Background
At present, many internal circuits of products include a main circuit and a secondary circuit, and a part of the secondary circuit needs to continue to work for a period of time after the main circuit is powered off and stops working, otherwise, the whole circuit is damaged. Some internal chips such as PC and VR devices enter a mode similar to a low power consumption state after the main circuit is powered down. In the mode, data, game progress storage, processing and other works can be finished, and the product cannot stop working immediately.
In view of the above requirements, those skilled in the art need to design a voltage regulator circuit, which can provide working voltage to some secondary circuits when the main circuit is powered off, so as to perform data, game progress storage, processing and other operations.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the voltage stabilizing circuit and the equipment with the same are provided, on the premise that the normal work of the main circuit is not influenced, after the main circuit is powered off, the voltage stabilizing circuit enables the secondary circuit to continue to work normally for a period of time, so that the normal operation of the normal work mode of the equipment is ensured, and related data or game progress and the like are allowed to be stored and processed in the mode.
In order to solve the technical problem, the technical scheme of the utility model is that:
a voltage stabilizing circuit comprises a power input end, a first voltage conversion circuit, a switch control circuit, an energy storage circuit, a second voltage conversion circuit and a power output end; the input end of the first voltage conversion circuit is electrically connected with the power supply input end, and the output end of the first voltage conversion circuit is respectively and electrically connected with the energy storage circuit and the power supply output end through the switch circuit; the input end of the second voltage conversion circuit is electrically connected with the output end of the energy storage circuit, and the output end of the second voltage conversion circuit is electrically connected with the power supply output end through the switch circuit; the switch circuit is electrically connected with the switch control circuit, and the switch control circuit is used for controlling the switch circuit to be switched on and switched off so as to control the first voltage conversion circuit or the second voltage conversion circuit to be switched on with the power output end.
Preferably, the switching circuit includes a first switching circuit and a second switching circuit; the first switch circuit is electrically connected with the first voltage conversion circuit, the power supply output end and the energy storage circuit respectively; the second switch circuit is electrically connected with the second voltage conversion circuit and the power output end respectively; and the control ends of the first switch circuit and the second switch circuit are respectively electrically connected with the switch control circuit.
Preferably, the first voltage conversion circuit and/or the second voltage conversion circuit includes a step-up/step-down circuit.
Preferably, the energy storage circuit comprises a first charging capacitor and a second charging capacitor, and one end of the first charging capacitor is electrically connected with one end of the second charging capacitor; the other end of the first charging capacitor is electrically connected with the cathode of a diode, the anode of the diode is electrically connected with the switch circuit, and the other end of the second charging capacitor is grounded; and the connecting end of the first charging capacitor and the second charging capacitor is electrically connected with the second voltage conversion circuit.
Preferably, a first filter circuit is disposed between the first voltage conversion circuit and the power input terminal, and/or a second filter circuit is disposed between the second voltage conversion circuit and the energy storage circuit.
The preferred mode is that the first switch circuit comprises a first switch tube and a second switch tube, the control ends of the first switch tube and the second switch tube are respectively electrically connected with the switch control circuit, the input end of the first switch tube is electrically connected with the first voltage conversion circuit, the output end of the first switch tube is simultaneously electrically connected with the input end of the second switch tube and the power output end, and the output end of the second switch tube is electrically connected with the input end of the energy storage circuit.
Preferably, the second switch circuit includes a third switch tube, a control end of the third switch tube is electrically connected to the switch control circuit, an input end of the third switch tube is electrically connected to an output end of the second voltage conversion circuit, and an output end of the third switch tube is electrically connected to the power supply output end.
Preferably, the first switch tube, the second switch tube and/or the third switch tube is/are a triode, a field effect tube or a load switch.
An intelligent device comprises a power supply circuit, a main circuit, a secondary circuit, a third voltage conversion circuit and the voltage stabilizing circuit, wherein the power supply input end of the voltage stabilizing circuit is electrically connected with the power supply circuit, and the power supply output end of the voltage stabilizing circuit is electrically connected with the secondary circuit through the third voltage conversion circuit.
Preferably, the main circuit comprises a main control unit, and the main control unit is the switch control circuit.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the utility model discloses a voltage stabilizing circuit and be equipped with the equipment of this circuit, voltage stabilizing circuit includes power input end, first voltage conversion circuit, switch circuit, on-off control circuit, tank circuit, second voltage conversion circuit and power output end; the input end of the first voltage conversion circuit is electrically connected with the power supply input end, and the output end of the first voltage conversion circuit is respectively electrically connected with the energy storage circuit and the power supply output end through the switch circuit; the input end of the second voltage conversion circuit is electrically connected with the output end of the energy storage circuit, and the output end of the second voltage conversion circuit is electrically connected with the output end of the power supply through the switch circuit; the switch circuit is electrically connected with the switch control circuit, and the switch control circuit is used for controlling the switch circuit to be switched on and switched off so as to control the first voltage conversion circuit or the second voltage conversion circuit to be switched on with the power output end. Adopt the utility model discloses voltage stabilizing circuit's equipment is under the prerequisite that does not influence the normal work of main circuit, behind the main circuit outage, and voltage stabilizing circuit output working power supply gives secondary circuit, makes secondary circuit can continue normal work a period, has both guaranteed the normal operating of equipment, allows again to save, handle relevant data or recreation progress etc. under this kind of mode.
Drawings
FIG. 1 is a circuit diagram of the voltage regulator circuit of the present invention;
fig. 2 is a schematic block diagram of the smart device of the present invention;
in the figure: 1-a first voltage conversion circuit, 2-a switch circuit, 3-an energy storage circuit, 4-a second voltage conversion circuit and 5-a voltage stabilizing circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a voltage stabilizing circuit includes a power input terminal, a first voltage converting circuit 1, a switch circuit 2, a switch control circuit, an energy storage circuit 3, a second voltage converting circuit 4 and a power output terminal; the input end of the first voltage conversion circuit 1 is electrically connected with the power supply input end, and the output end of the first voltage conversion circuit 1 is respectively and electrically connected with the energy storage circuit 3 and the power supply output end through the switch circuit 2; the input end of the second voltage conversion circuit 4 is electrically connected with the output end of the energy storage circuit 3, and the output end of the second voltage conversion circuit 4 is electrically connected with the power supply output end through the switch circuit 2; the switch circuit 2 is electrically connected with the switch control circuit, and the switch control circuit is used for controlling the switch circuit 2 to be switched on and switched off so as to control the first voltage conversion circuit 1 or the second voltage conversion circuit 4 to be switched on with the power output end.
The utility model discloses a voltage stabilizing circuit theory of operation does: after power is supplied, the switch control circuit starts to work, the switch control circuit controls the action of the switch circuit 2, the output end of the first voltage conversion circuit 1 is respectively conducted with the energy storage circuit 3 and the power output end, the second voltage conversion circuit 4 is disconnected with the power output end, at the moment, a power supply connected to the power input end is converted by the first voltage conversion circuit 1 and then is transmitted to the energy storage circuit 3 to be charged, and the power supply is transmitted to the power output end to supply power for the secondary circuit. After power is off, the switch control circuit controls the switch circuit 2 to act, the output end of the first voltage conversion circuit 1 is disconnected with the energy storage circuit 3 and the power output end respectively, the second voltage conversion circuit 4 is conducted with the power output end, the energy storage circuit 3 inputs power to the second voltage conversion circuit 4, and the second voltage conversion circuit 4 converts the power and transmits the power to the power output end to supply power for the secondary circuit continuously. It can be seen that the utility model discloses a voltage stabilizing circuit guarantees to go on normally working a period of time in the main circuit behind the electricity down under the prerequisite that does not influence the normal work of main circuit to save, handle relevant data or recreation progress etc..
As shown in fig. 1, the switch circuit 2 includes a first switch circuit and a second switch circuit; the first switch circuit is respectively and electrically connected with the first voltage conversion circuit 1, the power supply output end and the energy storage circuit 3; the second switch circuit is respectively and electrically connected with the second voltage conversion circuit 4 and the power output end; and the control ends of the first switch circuit and the second switch circuit are respectively electrically connected with the switch control circuit.
In this example, the first switch circuit includes a first switch tube and a second switch tube, the control ends of the first switch tube and the second switch tube are respectively electrically connected to the switch control circuit, the input end of the first switch tube is electrically connected to the first voltage conversion circuit 1, the output end of the first switch tube is simultaneously electrically connected to the input end of the second switch tube and the power output end, and the output end of the second switch tube is electrically connected to the input end of the energy storage circuit 3.
In this example, the second switching circuit includes a third switching tube, a control end of the third switching tube is electrically connected to the switch control circuit, an input end of the third switching tube is electrically connected to an output end of the second voltage conversion circuit 4, and an output end of the third switching tube is electrically connected to an output end of the power supply.
The first switch tube, the second switch tube and/or the third switch tube are/is a triode, a field effect tube or a load switch, and in this case, a triode is preferred.
As shown in fig. 1, the first voltage conversion circuit 1 and/or the second voltage conversion circuit 4 include a buck-boost circuit, the first voltage conversion circuit 1 includes a buck-boost circuit U1, and the second voltage conversion circuit 4 includes a buck-boost chip U2; in this example, a first filter circuit is provided between the first voltage conversion circuit 1 and the power input terminal, and/or a second filter circuit is provided between the second voltage conversion circuit 4 and the tank circuit 3.
As shown in fig. 1, the energy storage circuit 3 includes a first charging capacitor and a second charging capacitor, and one end of the first charging capacitor is electrically connected to one end of the second charging capacitor; the other end of the first charging capacitor is electrically connected with the cathode of the diode, the anode of the diode is electrically connected with the switch circuit 2, and the other end of the second charging capacitor is grounded; the connection end of the first charging capacitor and the second charging capacitor is electrically connected with the second voltage conversion circuit 4.
The specific circuit connection relationship is as follows:
an input end IN and an enable end EN of the buck-boost chip U1 are respectively and electrically connected with a power input end VIN, and the power input end VIN is grounded GND through a first filter capacitor C1; the grounding end GND of the buck-boost chip U1 is grounded; the output end LX of the buck-boost chip U1 is electrically connected with the collector of the triode Q1 through the energy storage inductor L1, the feedback end FB of the buck-boost chip U1 is grounded through the feedback resistor R1, and the feedback end FB is also electrically connected with the energy storage inductor L1 through the feedback resistor R2. The collector of the triode Q1 is grounded through a capacitor C2, the base of the triode Q1 is electrically connected with the switch control circuit, and the emitter of the triode Q1 is electrically connected with the power output end VOUT.
The base electrode of the triode Q2 is electrically connected with the switch control circuit, the collector electrode is electrically connected with the emitter electrode of the triode Q1, and the emitter electrode is electrically connected with the anode of the diode D1 of the energy storage circuit 3.
The base electrode of the triode Q3 is electrically connected with the switch control circuit, the collector electrode is electrically connected with the output end LX of the buck-boost circuit U2 through the energy storage inductor L2, and the emitter electrode is electrically connected with the power output end VOUT.
The negative electrode of the diode D1 of the energy storage circuit 3 is electrically connected with the first charging capacitor C5, one end of the second charging capacitor C6 is grounded, the two ends of the first charging capacitor C5 are connected with the current sharing resistor R5 IN parallel, the two ends of the second charging capacitor C6 are connected with the current sharing resistor R6 IN parallel, and the first charging capacitor C5 is further electrically connected with the input end IN and the enable end EN of the buck-boost circuit U2.
The input end IN of the buck-boost circuit U2 is further grounded to GND through a third filter capacitor C3, the feedback end FB of the buck-boost circuit U2 is electrically connected to the energy storage inductor L2 through a feedback resistor R3, the feedback end FB is grounded through a feedback resistor R4, the ground terminal GND of the buck-boost circuit U2 is grounded, and the ground terminal GND is further electrically connected to the energy storage inductor L2 through a capacitor C4.
As shown in FIG. 1, the voltage regulator circuit of the present embodiment operates according to the following principle:
and (3) electrifying: the switch control circuit controls the conduction of a triode Q1 and a triode Q2, a triode Q3 is cut off, a power supply input end VIN is connected with a power supply, the power supply is converted by a buck-boost circuit U1, and then outputs stable voltage to a power supply transmission end VOUT through a triode Q1 for a secondary circuit to use, and meanwhile, the first charging capacitor C5 and the second charging capacitor C6 are charged through a triode Q1 and a triode Q2.
The power-off process: the switch control circuit controls the transistor Q1 and the transistor Q2 to be cut off, the transistor Q3 is conducted, the first charging capacitor C5 and the second charging capacitor C6 discharge, the enable end EN enables the buck-boost circuit U2 to enable the buck-boost circuit C3538 to transmit the voltage of the first charging capacitor C5 and the second charging capacitor C6 to the input end IN to be converted, and then the stable voltage is continuously output to the power supply transmission end VOUT through the transistor Q3 to be used by a secondary circuit.
In the whole circuit, the first filter capacitor C1 and the third filter capacitor C3 are used as power supply filter capacitors, the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are used as feedback resistors, the resistor R5 and the resistor R6 are used as current-sharing resistors and also play a role in limiting current, and the diode D1 is used as current reverse prevention.
Example two:
as shown in fig. 1 and fig. 2, an intelligent device includes a power circuit, a main circuit, a secondary circuit, a third voltage converting circuit, and a voltage stabilizing circuit 5 according to the first embodiment, wherein a power input terminal of the voltage stabilizing circuit 5 is electrically connected to the power circuit, and a power output terminal of the voltage stabilizing circuit 5 is electrically connected to the secondary circuit through the third voltage converting circuit. In the embodiment, the main circuit comprises a main control unit which is a switch control circuit, so that the structure is reasonably configured, and the cost is reduced.
The following are specifically mentioned: the smart device may be, but is not limited to, a VR device, a PC, etc., and in this example, the VR device is taken as an example for description.
The PC end and the VR equipment establish a communication mechanism, an external power supply is connected into a power supply circuit, the power supply circuit is a power supply input end input power supply of a voltage stabilizing circuit, electrification is achieved, the main control unit controls the conduction of the triode Q1 and the triode Q2, the triode Q3 is cut off, after the power supply is converted by the first voltage conversion circuit 1, the power supply is transmitted to the power supply output end through the conducted triode Q1 and the conducted triode Q2, the power supply output end transmits the power supply to the third voltage conversion circuit, and the third voltage conversion circuit supplies power to the secondary circuit, so that normal operation is achieved. Meanwhile, the power supply charges the energy storage circuit 3 (the first charging capacitor C5 and the second charging capacitor C6) through the transistor Q2. After the power is off, the main control unit controls the triode Q1 and the triode Q2 to be cut off, the triode Q3 is conducted, the first charging capacitor C5 and the second charging capacitor C6 discharge through the second voltage conversion circuit 4, power signals are transmitted to the power output end, the voltage stabilizing circuit 5 continues to supply power to the secondary circuit for a period of time, the secondary circuit continues to work for a period of time, storage, processing and other works are completed, and normal use of VR equipment is guaranteed.
The above-mentioned preferred embodiments of the present invention are not intended to limit the present invention, and any modifications, equivalent improvements of the voltage stabilizing circuit, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A voltage stabilizing circuit is characterized by comprising a power supply input end, a first voltage conversion circuit, a switch control circuit, an energy storage circuit, a second voltage conversion circuit and a power supply output end;
the input end of the first voltage conversion circuit is electrically connected with the power supply input end, and the output end of the first voltage conversion circuit is respectively and electrically connected with the energy storage circuit and the power supply output end through the switch circuit;
the input end of the second voltage conversion circuit is electrically connected with the output end of the energy storage circuit, and the output end of the second voltage conversion circuit is electrically connected with the power supply output end through the switch circuit;
the switch circuit is electrically connected with the switch control circuit, and the switch control circuit is used for controlling the switch circuit to be switched on and switched off so as to control the first voltage conversion circuit or the second voltage conversion circuit to be switched on with the power output end.
2. The voltage regulator circuit of claim 1, wherein the switching circuit comprises a first switching circuit and a second switching circuit;
the first switch circuit is electrically connected with the first voltage conversion circuit, the power supply output end and the energy storage circuit respectively;
the second switch circuit is electrically connected with the second voltage conversion circuit and the power output end respectively;
and the control ends of the first switch circuit and the second switch circuit are respectively electrically connected with the switch control circuit.
3. The voltage regulation circuit of claim 1, wherein the first voltage conversion circuit and/or the second voltage conversion circuit comprises a buck-boost circuit.
4. The voltage regulator circuit of claim 1, wherein the tank circuit comprises a first charging capacitor and a second charging capacitor, one end of the first charging capacitor being electrically connected to one end of the second charging capacitor;
the other end of the first charging capacitor is electrically connected with the cathode of a diode, the anode of the diode is electrically connected with the switch circuit, and the other end of the second charging capacitor is grounded; and the connecting end of the first charging capacitor and the second charging capacitor is electrically connected with the second voltage conversion circuit.
5. The voltage regulator circuit of claim 1, wherein a first filter circuit is disposed between the first voltage conversion circuit and the power input, and/or a second filter circuit is disposed between the second voltage conversion circuit and the tank circuit.
6. The voltage regulator circuit of claim 2, wherein the first switching circuit comprises a first switching transistor and a second switching transistor,
the control end of the first switch tube and the control end of the second switch tube are respectively electrically connected with the switch control circuit, the input end of the first switch tube is electrically connected with the first voltage conversion circuit, the output end of the first switch tube is simultaneously electrically connected with the input end of the second switch tube and the power output end, and the output end of the second switch tube is electrically connected with the input end of the energy storage circuit.
7. The voltage regulator circuit of claim 6, wherein the second switching circuit comprises a third switching tube,
the control end of the third switching tube is electrically connected with the switch control circuit, the input end of the third switching tube is electrically connected with the output end of the second voltage conversion circuit, and the output end of the third switching tube is electrically connected with the power supply output end.
8. The voltage regulator circuit according to claim 7, wherein the first switch tube, the second switch tube and/or the third switch tube is a triode, a field effect transistor or a load switch.
9. An intelligent device, comprising a power circuit, a main circuit, a secondary circuit, a third voltage conversion circuit and the voltage stabilizing circuit of any one of claims 1 to 8, wherein the power input terminal of the voltage stabilizing circuit is electrically connected to the power circuit, and the power output terminal of the voltage stabilizing circuit is electrically connected to the secondary circuit through the third voltage conversion circuit.
10. The smart device of claim 9, wherein the main circuit comprises a master control unit, the master control unit being the switch control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752817.8U CN213585577U (en) | 2020-11-24 | 2020-11-24 | Voltage stabilizing circuit and intelligent device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752817.8U CN213585577U (en) | 2020-11-24 | 2020-11-24 | Voltage stabilizing circuit and intelligent device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213585577U true CN213585577U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022752817.8U Active CN213585577U (en) | 2020-11-24 | 2020-11-24 | Voltage stabilizing circuit and intelligent device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213585577U (en) |
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2020
- 2020-11-24 CN CN202022752817.8U patent/CN213585577U/en active Active
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