CN216056457U - Multi-path selectable power supply device and electronic product - Google Patents
Multi-path selectable power supply device and electronic product Download PDFInfo
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- CN216056457U CN216056457U CN202121992225.1U CN202121992225U CN216056457U CN 216056457 U CN216056457 U CN 216056457U CN 202121992225 U CN202121992225 U CN 202121992225U CN 216056457 U CN216056457 U CN 216056457U
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Abstract
The utility model provides a multi-path selectable power supply device and an electronic product, comprising: the adapter power supply unit is connected with the electric equipment and supplies power to the equipment through the adapter power supply unit; and/or the network power supply unit is connected with the electric equipment and supplies power to the equipment through the network cable power supply unit; and/or the battery power supply unit is connected with the electric equipment and supplies power to the equipment through the battery power supply unit; the power supply priority of the equipment is from high to low: adapter power supply unit, network power supply unit, battery power supply unit. The multi-path selectable power supply device can give consideration to the design of power supply stability and priority; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
Description
Technical Field
The utility model relates to a power supply device and an electronic product.
Background
At present, the market of electronic products is increased explosively, and equipment capable of utilizing multiple power supplies for power supply is frequently available. The portable handheld equipment, the wearable equipment, the mobile phone, the tablet personal computer and other equipment generally utilize a battery to supply power to the whole equipment, but the equipment needs to extract electric energy from a peripheral equipment when a USB port or an adapter is inserted, and the peripheral equipment can also supply power to the battery; different power supply peripherals are applied to different scenes, and the load carrying capacity and the primary and secondary relations are different.
It is an important task of circuit design to select the proper unique power supply mode under different environments.
The defects of the prior art scheme are as follows:
1. the switching time of the parallel power supply is too long, which may cause the output voltage to be unstable and affect the operation of the equipment.
2. The comparator-based control method is too costly and switches over in oscillations when the voltage input ranges of the various paths approach.
3. The diodes and OVP design approach are too lossy and also affect the thermal design, and the over-voltage protection circuit (OVP) provides protection for downstream circuits from excessive voltages.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a multi-path selectable power supply device which can give consideration to the design of power supply stability and priority; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
In order to solve the above technical problem, the present invention provides a multiple selectable power supply device, including: the adapter power supply unit is connected with the electric equipment and supplies power to the equipment through the adapter power supply unit; and/or the network power supply unit is connected with the electric equipment and supplies power to the equipment through the network cable power supply unit; and/or the battery power supply unit is connected with the electric equipment and supplies power to the equipment through the battery power supply unit; the power supply priority of the equipment is from high to low: adapter power supply unit, network power supply unit, battery power supply unit.
The multi-path selectable power supply device has the advantages that: the design of power supply stability and priority can be considered; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
Preferably, when the adapter power supply unit is accessed, the adapter power supply unit is used for supplying power to the equipment.
Preferably, when no adapter power supply unit is connected and a network power supply unit is connected, the network power supply unit is used for supplying power to the equipment.
Preferably, the battery power supply unit is used to power the device when no adapter power supply unit is accessed and no network power supply unit is accessed.
Preferably, the multiple selectable power supply devices are applied to power supply circuits of electronic products.
The utility model also provides an electronic product which comprises a power supply circuit, wherein the power supply circuit comprises the multi-path selectable power supply device.
The electronic product has the beneficial effects that: the design of power supply stability and priority can be considered; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of an adapter power supply unit only when accessed;
FIG. 2 is a schematic diagram when only a network power unit is accessed;
FIG. 3 is a schematic diagram of when both an adapter power supply unit and a network power supply unit are accessed;
fig. 4 is a schematic diagram when only the battery powered unit is accessed.
Detailed Description
The first embodiment,
The multiple selectable power supply device of this embodiment includes: the adapter power supply unit is used for supplying power to the equipment through the adapter power supply unit; the network power supply unit is used for supplying power to the equipment through the network cable power supply unit; the battery power supply unit is used for supplying power to the equipment through the battery power supply unit; the power supply priority of the equipment is from high to low: adapter power supply unit, network power supply unit, battery power supply unit. The design of power supply stability and priority can be considered; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
When the adapter power supply unit is accessed, the adapter power supply unit is used for supplying power to the equipment.
When the adapter power supply unit is not accessed and the network power supply unit is accessed, the network power supply unit is used for supplying power to the equipment.
When no adapter power supply unit is accessed and no network power supply unit is accessed, the battery power supply unit is used for supplying power to the equipment.
The multi-path selectable power supply device is applied to a power supply circuit of an electronic product.
As shown in FIG. 1, only when the adapter power supply unit is accessed, the PMOS switch U8 is turned on by default, illustrating that adapter power is supplied to the device via the U8 output device; at the same time, the G1/G2 stage of U8 is pulled high, the PMOS switch U8 is closed, and the battery power supply unit is prohibited from supplying power to the device;
as shown IN FIG. 2, when only the network power supply unit is connected, the adapter power supply IN is shown to be 0V, at this time, G1/G2 of U4 is pulled low, the PMOS switch U4 is opened, and the network power supply output supplies power to the device; at the same time, the G1/G2 stage of U8 is pulled high, the PMOS switch U8 is closed, and the battery power supply unit is prohibited from supplying power to the device;
as shown IN FIG. 3, when both the adapter power supply unit and the network power supply unit are engaged, the adapter power IN is shown powering the device via the diode D18 output device; at the moment, G1/G2 of U4 is pulled high, a PMOS switch U4 is closed, and the network power supply is forbidden to supply power to the equipment; at the same time, the G1/G2 level of the U8 is pulled high, the PMOS switch U8 is closed, and the battery power supply unit is also forbidden to supply power to the equipment;
as shown IN fig. 4, when only the battery power unit is connected, the adapter power IN is shown to be 0V, the network power is 0V, and at this time, the G1/G2 stage of U8 is also pulled low, the PMOS switch U8 is turned on, and the battery power unit output device supplies power to the device;
the charging path of the multi-path selectable power supply device comprises the following steps: when the three-way input is controlled by a diode and NAND gate control circuit, adapter power supply or network power supply is in place, the Q2200G level is pulled high, the NMOSQ2200 is conducted, then the Q4G level is pulled low, the door opening voltage is-5V, at the moment, the NMOSQ4 is conducted, and the output of the equipment is used for charging the panel; only under the condition of the battery power supply unit, Q2200 can not be conducted, Q4 is also turned off, and the device can not charge the panel, so that the device is logical; meanwhile, U4, U8 and U9 are back-to-back PMOS switches, and the body diodes can ensure that the input and output of the circuit cannot be in a conduit state;
the circuit of the multi-path selectable power supply device outputs a truth table of a verification result:
example II,
The utility model also provides an electronic product which comprises a power supply circuit, wherein the power supply circuit comprises the multi-path selectable power supply device. The design of power supply stability and priority can be considered; the output voltage is stable, and the operation of equipment is not influenced; and the loss is reduced.
The multi-path selectable power supply device is applied to various electronic equipment such as mobile phones, palm computers, tablet computers, notebook computers, intelligent watches, intelligent bracelets and the like.
The utility model is not limited to the embodiments discussed above. The foregoing description of the specific embodiments is intended to describe and explain the principles of the utility model. Obvious modifications or alterations based on the teachings of the present invention should also be considered as falling within the scope of the present invention. The foregoing detailed description is provided to disclose the best mode of practicing the utility model, and also to enable a person skilled in the art to utilize the utility model in various embodiments and with various alternatives for carrying out the utility model.
Claims (6)
1. A multiple selectable power supply apparatus, comprising:
the adapter power supply unit is connected with the electric equipment and supplies power to the equipment through the adapter power supply unit;
and/or the network power supply unit is connected with the electric equipment and supplies power to the equipment through the network cable power supply unit;
and/or the battery power supply unit is connected with the electric equipment and supplies power to the equipment through the battery power supply unit;
the power supply priority of the equipment is from high to low: adapter power supply unit, network power supply unit, battery power supply unit.
2. The multiple selectable power supply apparatus of claim 1, wherein the adapter power supply unit is used to power the device when the adapter power supply unit is accessed.
3. The multiple selectable power supply apparatus of claim 2, wherein the network power unit is used to power the device when no adapter power unit is connected and a network power unit is connected.
4. The multiple selectable power supply unit of claim 3, wherein the battery power unit is used to power the device when no adapter power unit is engaged and no network power unit is engaged.
5. The multiple selectable power supply apparatus of claim 4, wherein said multiple selectable power supply apparatus is applied to a power supply circuit of an electronic product.
6. An electronic product comprising a power supply circuit, wherein the power supply circuit comprises the multiple selectable power supply apparatus of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992225.1U CN216056457U (en) | 2021-08-23 | 2021-08-23 | Multi-path selectable power supply device and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992225.1U CN216056457U (en) | 2021-08-23 | 2021-08-23 | Multi-path selectable power supply device and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056457U true CN216056457U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121992225.1U Active CN216056457U (en) | 2021-08-23 | 2021-08-23 | Multi-path selectable power supply device and electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056457U (en) |
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2021
- 2021-08-23 CN CN202121992225.1U patent/CN216056457U/en active Active
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