Power supply circuit and electronic equipment

Abstract

The utility model relates to a power supply circuit and electronic equipment. The power supply circuit comprises a charge pump circuit, the first end of which is used for being coupled with a battery of the electronic equipment, and the charge pump circuit is used for converting the output voltage of the battery; the first end of the first voltage conversion circuit is coupled with the second end of the charge pump circuit, the second end of the first voltage conversion circuit is used for being coupled with a first load of the electronic equipment, and the first voltage conversion circuit is used for converting the output voltage of the charge pump circuit to supply power to the first load. The larger the voltage difference value between the output voltage and the input voltage of the voltage conversion circuit is, the lower the efficiency of the voltage conversion circuit is. The charge pump circuit with high voltage conversion efficiency is arranged between the battery and the first voltage conversion circuit, and the output voltage of the battery is preliminarily converted to reduce the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit, so that the efficiency of the power supply circuit is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply, and particularly to a power supply circuit and an electronic device. Background Art

[0002] Currently, during the operation of an electronic device, the output voltage of a battery is converted by a voltage conversion circuit in a power supply circuit to supply power to different loads, enabling the stable use of the electronic device. However, during the process of supplying power to a load, the power supply circuit has the problem of low efficiency. Summary of the Utility Model

[0003] To overcome the problems existing in the related art, the present disclosure provides a power supply circuit and an electronic device.

[0004] According to a first aspect of the present disclosure, there is provided a power supply circuit, the power supply circuit comprising:

[0005] A charge pump circuit, a first end of the charge pump circuit is used to be coupled to a battery of an electronic device, and the charge pump circuit is used to convert the output voltage of the battery;

[0006] A first voltage conversion circuit, a first end of the first voltage conversion circuit is coupled to a second end of the charge pump circuit, a second end of the first voltage conversion circuit is used to be coupled to a first load of the electronic device, and the first voltage conversion circuit is used to convert the output voltage of the charge pump circuit to supply power to the first load.

[0007] In some embodiments of the present disclosure, the charge pump circuit includes a first charge pump circuit and / or a second charge pump circuit, the first charge pump circuit is used to reduce the output voltage of the battery, and the second charge pump circuit is used to increase the output voltage of the battery.

[0008] In some embodiments of the present disclosure, the ratio of the output voltage to the input voltage of the first charge pump circuit is 1:2, and the ratio of the output voltage to the input voltage of the second charge pump circuit is 2:1.

[0009] In some embodiments of the present disclosure, a first end of the first charge pump circuit and a first end of the second charge pump circuit are both used to be coupled to the battery; the number of the first voltage conversion circuits is multiple; a first end of some of the first voltage conversion circuits is coupled to a second end of the first charge pump circuit, and a first end of some of the first voltage conversion circuits is coupled to a second end of the second charge pump circuit.

[0010] In some embodiments of the present disclosure, the first voltage conversion circuit includes a first buck circuit and / or a first boost circuit.

[0011] In some embodiments of the present disclosure, the power supply circuit further includes:

[0012] A second voltage conversion circuit, a first end of the second voltage conversion circuit is used to be coupled to the battery, a second end of the second voltage conversion circuit is used to be coupled to a second load of the electronic device, and the second voltage conversion circuit is configured to convert the output voltage of the battery to supply power to the second load.

[0013] In some embodiments of the present disclosure, the second voltage conversion circuit includes a second buck circuit and / or a second boost circuit.

[0014] In some embodiments of the present disclosure, the charge pump circuit includes a first charge pump circuit and a second charge pump circuit; the first voltage conversion circuit includes a first buck circuit and a first boost circuit; the second voltage conversion circuit includes a second buck circuit and a second boost circuit; a first end of the first charge pump circuit and a first end of the second charge pump circuit are both used to be coupled to the battery; a first end of a part of the first buck circuits is coupled to a second end of the first charge pump circuit, and a first end of a part of the first buck circuits is coupled to a second end of the second charge pump circuit; a first end of each of the first boost circuits is coupled to the second end of the second charge pump circuit; a first end of each of the second buck circuits and a first end of each of the second boost circuits are both used to be coupled to the battery.

[0015] In some embodiments of the present disclosure, the output voltage of each of the first buck circuits coupled to the first charge pump circuit is less than or equal to the output voltage of each of the second buck circuits; the output voltage of each of the first buck circuits coupled to the second charge pump circuit is less than or equal to the output voltage of each of the second boost circuits; the output voltage of each of the first boost circuits coupled to the second charge pump circuit is greater than or equal to the output voltage of each of the second boost circuits.

[0016] According to a second aspect of the present disclosure, there is provided an electronic device, and the charging device includes the power supply circuit as described above.

[0017] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0018] The power supply circuit includes a charge pump circuit and a first voltage conversion circuit. The charge pump circuit is coupled to the battery, and the first voltage conversion circuit is coupled between the charge pump circuit and the first load. Since the greater the voltage difference between the output voltage and the input voltage of the voltage conversion circuit, the lower the efficiency of the voltage conversion circuit. By providing a charge pump circuit with high voltage conversion efficiency between the battery and the first voltage conversion circuit, the output voltage of the battery is preliminarily converted to reduce the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit, thereby improving the efficiency of the power supply circuit.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the present disclosure. Brief Description of the Drawings

[0020] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model and used together with the specification to explain the principles of the present utility model.

[0021] Figure 1 is a schematic structural diagram of a power supply circuit;

[0022] Figure 2 is a schematic structural diagram of a power supply circuit provided by an exemplary embodiment of the present disclosure;

[0023] Figure 3 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0024] Figure 4 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0025] Figure 5 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0026] Figure 6 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0027] Figure 7 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0028] Figure 8 is a schematic structural diagram of a power supply circuit provided by another exemplary embodiment of the present disclosure;

[0029] Figure 9 is a system block diagram of an electronic device provided by an exemplary embodiment of the present disclosure.

[0030] In the figure:

[0031] 1 - Step - down circuit; 2 - Boost circuit; 3 - Power management circuit; 4 - Load; 10 - Charge pump circuit; 11 - First charge pump circuit; 12 - Second charge pump circuit; 20 - First voltage conversion circuit; 21 - First step - down circuit; 22 - First boost circuit; 30 - Battery; 40 - First load; 50 - Second voltage conversion circuit; 51 - Second step - down circuit; 52 - Second boost circuit; 60 - Second load; 70 - First sub - load; 71 - Second sub - load; 72 - Third sub - load; 73 - Fourth sub - load; 74 - Fifth sub - load; 400 - Electronic device; 402 - Processing component; 404 - Memory; 406 - Power supply component; 408 - Multimedia component; 410 - Audio component; 412 - Input / output interface; 414 - Sensor component; 416 - Communication component; 420 - Processor. Detailed implementation manners

[0032] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] Currently, during the operation of an electronic device, the output voltage of the battery is converted by a voltage conversion circuit in the power supply circuit to supply power to different loads, enabling the stable use of the electronic device. Since the operating voltages of different loads are different, for example, the operating voltage of a processor is between 0.5V and 2V, the operating voltage of an external device is between 2.5V and 3.3V, and the operating voltage of a motor is 10V, etc., it is necessary to convert the output voltage of the battery through a voltage conversion circuit to provide different supply voltages to different loads.

[0034] In the related art, a power supply circuit is provided, such as Figure 1As shown in the figure, the power supply circuit includes a plurality of buck circuits 1 and boost circuits 2. Each buck circuit 1 and each boost circuit 2 are coupled to the battery through a power management circuit 3 to convert the output voltage of the battery and supply power to the load 4 respectively. Among them, the output voltage of the battery fluctuates between 3.2V and 4.6V. According to the magnitude relationship between the operating voltage of the load 4 and the output voltage of the battery, the buck circuit 1 reduces the output voltage of the battery to between 0.3V and 3V to supply power to the load 4 whose operating voltage is less than the output voltage of the battery, and the boost circuit 2 increases the output voltage of the battery to between 5V and 12V to supply power to the load 4 whose operating voltage is greater than the output voltage of the battery. However, when the voltage difference between the operating voltage of the load 4 and the output voltage of the battery is large, the voltage conversion efficiency is relatively low for both the buck circuit 1 and the boost circuit 2. For example, for a load 4 with an operating voltage of 0.5V, when the buck circuit 1 reduces the output voltage of the battery to 0.5V, the voltage conversion efficiency of the buck circuit 1 is about 80%. For a load 4 with an operating voltage of 12V, when the boost circuit 2 increases the output voltage of the battery to 12V, the voltage conversion efficiency of the boost circuit 2 is about 70%. Therefore, there is a problem of low efficiency in the process of the power supply circuit supplying power to the load. And, since the supply current required by the load 4 is large, the loss of the power supply circuit increases in the case of a large voltage difference.

[0035] Based on this, the present disclosure provides a power supply circuit, and a charge pump circuit is added between the first voltage conversion circuit and the battery. For the first voltage conversion circuit with a large voltage difference between the output voltage and the input voltage, the charge pump circuit converts the output voltage of the battery to reduce the voltage difference between the output voltage and the input voltage, thereby improving the efficiency of the power supply circuit. And, by reducing the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit, the loss of the power supply circuit is reduced in the case where the supply current required by the first load is large.

[0036] An exemplary embodiment of the present disclosure provides a power supply circuit, as Figure 2 shown, the power supply circuit includes a charge pump circuit 10 and a first voltage conversion circuit 20. The first end of the charge pump circuit 10 is used to be coupled to the battery 30 of the electronic device, and the charge pump circuit 10 is used to convert the output voltage of the battery 30. The first end of the first voltage conversion circuit 20 is coupled to the second end of the charge pump circuit 10, the second end of the first voltage conversion circuit 20 is used to be coupled to the first load 40 of the electronic device, and the first voltage conversion circuit 20 is used to convert the output voltage of the charge pump circuit 10 to supply power to the first load 40.

[0037] In this embodiment, the power supply circuit includes a charge pump circuit and a first voltage conversion circuit. The charge pump circuit is coupled to the battery, and the first voltage conversion circuit is coupled between the charge pump circuit and the first load. Since the greater the voltage difference between the output voltage and the input voltage of the voltage conversion circuit, the lower the efficiency of the voltage conversion circuit. By providing a charge pump circuit with high voltage conversion efficiency between the battery and the first voltage conversion circuit, the output voltage of the battery is preliminarily converted to reduce the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit, thereby improving the efficiency of the power supply circuit.

[0038] Exemplarily, when the battery 30 is a single-cell battery, the output voltage of the battery 30 is equal to the battery voltage. When the battery 30 is a dual-cell battery, the output voltage of the battery 30 is equal to half of the battery voltage. That is, the output voltage of the battery 30 fluctuates between 3.2V and 4.6V.

[0039] Exemplarily, the battery 30 can be coupled to the power supply circuit through a power management circuit.

[0040] In one embodiment, the charge pump circuit 10 includes a first charge pump circuit. The first charge pump circuit is used to reduce the output voltage of the battery 30.

[0041] In this embodiment, the charge pump circuit includes a first charge pump circuit, and the first charge pump circuit can reduce the output voltage of the battery and then input it to the first voltage conversion circuit. Since the output voltage of the first voltage conversion circuit remains unchanged, by reducing the input voltage of the first voltage conversion circuit, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit for voltage reduction can be reduced, thereby improving the efficiency of the power supply circuit.

[0042] In one embodiment, the charge pump circuit 10 includes a second charge pump circuit. The second charge pump circuit is used to increase the output voltage of the battery 30.

[0043] In this embodiment, the charge pump circuit includes a second charge pump circuit, and the second charge pump circuit can increase the output voltage of the battery and then input it to the first voltage conversion circuit. Since the output voltage of the first voltage conversion circuit remains unchanged, by increasing the input voltage of the first voltage conversion circuit, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit for voltage increase can be reduced, thereby improving the efficiency of the power supply circuit.

[0044] In one embodiment, as Figure 3 shown, the charge pump circuit 10 includes a first charge pump circuit 11 and a second charge pump circuit 12. The first charge pump circuit 11 is used to reduce the output voltage of the battery 30, and the second charge pump circuit 12 is used to increase the output voltage of the battery 30.

[0045] In this embodiment, the charge pump circuit includes a first charge pump circuit and a second charge pump circuit. The first charge pump circuit can reduce the output voltage of the battery and then input it to the first voltage conversion circuit, and the second charge pump circuit can increase the output voltage of the battery and then input it to the first voltage conversion circuit. Since the output voltage of the first voltage conversion circuit remains unchanged, by reducing or increasing the input voltage of different first voltage conversion circuits, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit can be reduced, thereby improving the efficiency of the power supply circuit.

[0046] In one embodiment, the ratio of the output voltage to the input voltage of the first charge pump circuit 11 is 1:2, and the ratio of the output voltage to the input voltage of the second charge pump circuit 12 is 2:1.

[0047] In this embodiment, when the ratio of the output voltage to the input voltage of the first charge pump is 1:2, the voltage conversion efficiency of the first charge pump circuit is relatively high, and the output voltage is close to the operating voltage of the first load. By initially converting the output voltage of the battery through the first charge pump circuit with high voltage conversion efficiency, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit is greatly reduced with a small reduction in voltage conversion efficiency, thereby improving the efficiency of the power supply circuit. When the ratio of the output voltage to the input voltage of the second charge pump is 2:1, the voltage conversion efficiency of the second charge pump circuit is relatively high, and the output voltage is close to the operating voltage of the first load. By initially converting the output voltage of the battery through the second charge pump circuit with high voltage conversion efficiency, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit is greatly reduced with a small reduction in voltage conversion efficiency, thereby improving the efficiency of the power supply circuit.

[0048] In one embodiment, the first ends of both the first charge pump circuit 11 and the second charge pump circuit 12 are used to be coupled to the battery 30. The number of the first voltage conversion circuits 20 is multiple. The first ends of some of the first voltage conversion circuits 20 are coupled to the second end of the first charge pump circuit 11, and the first ends of some of the first voltage conversion circuits 20 are coupled to the second end of the second charge pump circuit 12.

[0049] In this embodiment, since the electronic device includes multiple first loads and the operating voltages of some of the first loads are all different. By coupling some of the first voltage conversion circuits in the multiple first voltage conversion circuits to the first charge pump circuit and some of the first voltage conversion circuits to the second charge pump circuit, the voltage difference between the output voltage and the input voltage of the first voltage conversion circuit for step-down and step-up can be reduced, thereby improving the efficiency of the power supply circuit.

[0050] In one embodiment, the first voltage conversion circuit 20 includes a first step-down circuit.

[0051] In this embodiment, since the first voltage conversion circuit includes a first buck circuit, the first buck circuit can reduce and stabilize the output voltage of the charge pump circuit at the operating voltage of the first load, thereby improving the reliability of the power supply circuit.

[0052] Exemplarily, the first buck circuit can be a Buck circuit.

[0053] In one embodiment, the first voltage conversion circuit 20 includes a first boost circuit.

[0054] In this embodiment, since the first voltage conversion circuit includes a first boost circuit, the first boost circuit can increase and stabilize the output voltage of the charge pump circuit at the operating voltage of the first load, thereby improving the reliability of the power supply circuit.

[0055] Exemplarily, the first boost circuit can be a Boost circuit.

[0056] In one embodiment, as Figure 4 shown, the first voltage conversion circuit 20 includes a first buck circuit 21 and a first boost circuit 22.

[0057] In this embodiment, since the first voltage conversion circuit includes a first buck circuit and a first boost circuit, the first buck circuit and the first boost circuit can respectively reduce and increase the output voltage of the charge pump circuit and stabilize it at the operating voltage of the first load, thereby improving the reliability of the power supply circuit.

[0058] In one embodiment, as Figure 5 shown, the power supply circuit further includes a second voltage conversion circuit 50. The first end of the second voltage conversion circuit 50 is used to be coupled to the battery 30, the second end of the second voltage conversion circuit 50 is used to be coupled to the second load 60 of the electronic device, and the second voltage conversion circuit 50 is used to convert the output voltage of the battery 30 to supply power to the second load 60.

[0059] In this embodiment, when the voltage difference between the output voltage of the battery and the operating voltage of the second load is small, the voltage conversion efficiency of the second voltage conversion circuit is high, and there is no need to add a charge pump circuit. The second voltage conversion circuit directly converts the output voltage of the battery to supply power to the second load, avoiding adding additional circuits, thereby improving the efficiency of the power supply circuit and reducing the complexity of the power supply circuit structure.

[0060] Exemplarily, the number of the second voltage conversion circuits 50 is multiple.

[0061] In one embodiment, the second voltage conversion circuit 50 includes a second buck circuit.

[0062] In this embodiment, since the second voltage conversion circuit includes a second buck circuit, the second buck circuit can reduce and stabilize the output voltage of the battery at the operating voltage of the second load, thereby improving the reliability of the power supply circuit.

[0063] Exemplarily, the second buck circuit 51 can be a Buck circuit.

[0064] In one embodiment, the second voltage conversion circuit 50 includes a second boost circuit.

[0065] In this embodiment, since the second voltage conversion circuit includes a second boost circuit, the second boost circuit can increase and stabilize the output voltage of the battery at the operating voltage of the second load, thereby improving the reliability of the power supply circuit.

[0066] Exemplarily, the second boost circuit 52 can be a Boost circuit.

[0067] In one embodiment, as Figure 6 shown, the second voltage conversion circuit 50 includes a second buck circuit 51 and a second boost circuit 52.

[0068] In this embodiment, since the second voltage conversion circuit includes a second buck circuit and a second boost circuit, the second buck circuit and the second boost circuit can respectively reduce and increase the output voltage of the battery and stabilize it at the operating voltage of the second load, thereby improving the reliability of the power supply circuit.

[0069] In one embodiment, as Figure 7 shown, the charge pump circuit 10 includes a first charge pump circuit 11 and a second charge pump circuit 12. The first voltage conversion circuit 20 includes a first buck circuit 21 and a first boost circuit 22. The second voltage conversion circuit 50 includes a second buck circuit 51 and a second boost circuit 52. The first ends of the first charge pump circuit 11 and the second charge pump circuit 12 are both used to be coupled to the battery 30. The first ends of part of the first buck circuit 21 are coupled to the second ends of the first charge pump circuit 11, and the first ends of part of the first buck circuit 21 are coupled to the second ends of the second charge pump circuit 12. The first ends of each first boost circuit 22 are all coupled to the second ends of the second charge pump circuit 12. The first ends of each second buck circuit 51 and the first ends of each second boost circuit 52 are both used to be coupled to the battery 30.

[0070] In this embodiment, since the voltage difference between the output voltage of the battery and the first load is large, the voltage conversion efficiency of the first voltage conversion circuit is low, and since the voltage difference between the output voltage of the battery and the second load is small, the voltage conversion efficiency of the second voltage conversion circuit is high. It is necessary to reduce the voltage difference between the output voltage of the battery and the first load to improve the efficiency of the power supply circuit. By providing a first charge pump circuit and a second charge pump circuit between the battery and the first buck circuit, the voltage difference between the output voltage of the battery and some of the first loads can be reduced, thereby improving the efficiency of the power supply circuit. By providing a second charge pump circuit between the battery and the first boost circuit, the voltage difference between the output voltage of the battery and some of the first loads can be reduced, thereby improving the efficiency of the power supply circuit. By directly converting the output voltage of the battery through the second buck circuit and the second boost circuit to supply power to the second load, additional circuits are avoided, thereby improving the efficiency of the power supply circuit and reducing the complexity of the power supply circuit structure. At the same time, since the first buck circuit, the first boost circuit, the second buck circuit, and the second boost circuit can convert and stabilize the input voltage, the power supply circuit can supply power to different loads in the electronic device, thereby improving the reliability of the power supply circuit.

[0071] Exemplarily, the first end of a part of the first boost circuit 22 may also be coupled to the second end of the first charge pump circuit 11.

[0072] In one embodiment, the output voltage of each first buck circuit 21 coupled to the first charge pump circuit 11 is less than or equal to the output voltage of each second buck circuit 51. The output voltage of each first buck circuit 21 coupled to the second charge pump circuit 12 is less than or equal to the output voltage of each second boost circuit 52. The output voltage of each first boost circuit 22 coupled to the second charge pump circuit 12 is greater than or equal to the output voltage of each second boost circuit 52.

[0073] In this embodiment, since the voltage difference between the output voltage and the input voltage of some of the first buck circuits is greater than or equal to the voltage difference between the output voltage and the input voltage of the second buck circuit, the voltage conversion efficiency of the first buck circuit is low. By adding a first charge pump circuit with high voltage conversion efficiency, the output voltage of the battery can be initially reduced to reduce the voltage difference between the output voltage and the input voltage of some of the first buck circuits, thereby improving the efficiency of the power supply circuit. Since the voltage difference between the output voltage and the input voltage of the first boost circuit is greater than or equal to the voltage difference between the output voltage and the input voltage of the second boost circuit, the voltage conversion efficiency of the first boost circuit is low. By adding a second charge circuit with high voltage conversion efficiency, the output voltage of the battery can be initially increased to reduce the voltage difference between the output voltage and the input voltage of the first boost circuit, thereby improving the efficiency of the power supply circuit. When the first boost circuit is used to supply power to some of the first loads, the voltage difference between the output voltage and the input voltage of the first boost circuit is relatively large. By reusing the second charge pump circuit and coupling some of the first buck circuits with the second charge pump circuit, after the second charge pump circuit initially increases the output voltage of the battery, the first buck circuit is used to reduce the voltage output by the second charge pump circuit to reduce the voltage difference between the output voltage and the input voltage of the first buck circuit, thereby improving the efficiency of the power supply circuit.

[0074] An exemplary embodiment of the present disclosure provides a power supply circuit, as Figure 8 shown, the power supply circuit includes a first charge pump circuit 11, a second charge pump circuit 12, a plurality of first buck circuits 21, a plurality of first boost circuits 22, a plurality of second buck circuits 51, and a plurality of second boost circuits 52. The first end of the first charge pump circuit 11, the first end of the second charge pump circuit 12, the first end of each second buck circuit 51, and the first end of each second boost circuit 52 are all used to be coupled to the battery 30. The second end of the first charge pump circuit 11 is coupled to the first end of some of the first buck circuits 21. The second end of some of the first buck circuits 21 is used to be coupled to the corresponding first sub-load 70. The second end of the second charge pump circuit 12 is coupled to the first end of some of the first buck circuits 21 and the first end of the first boost circuit 22. The second end of some of the first buck circuits 21 is used to be coupled to the corresponding second sub-load 71. The second end of the first boost circuit 22 is used to be coupled to the corresponding third sub-load 72. The second end of the second buck circuit 51 is used to be coupled to the corresponding fourth sub-load 73. The second end of the second boost circuit 52 is used to be coupled to the corresponding fifth sub-load 74.

[0075] Exemplarily, the output voltage of the battery is 3.2V to 4.6V. The ratio of the output voltage to the input voltage of the first charge pump circuit 11 is 1:2. The ratio of the output voltage to the input voltage of the second charge pump circuit 12 is 2:1. The operating voltages of the multiple first sub-loads 70 are between 0.5V and 1.6V. The operating voltages of the multiple second sub-loads 71 are between 5V and 6.4V. The operating voltages of the multiple third sub-loads 72 are between 9.2V and 12V. The operating voltages of the multiple fourth sub-loads 73 are between 1.6V and 3V. The operating voltages of the multiple fifth sub-loads 74 are between 6.4V and 9.2V. When the power supply circuit supplies power to the first sub-loads 70, the first charge pump circuit 11 reduces the output voltage of the battery 30 to 1.6V to 2.3V and outputs it to the multiple first buck circuits 21. The multiple first buck circuits 21 respectively reduce the voltage output by the first charge pump circuit 11 to 0.5V to 1.6V and output it to the corresponding first sub-loads 70. When the power supply circuit supplies power to the second sub-loads 71, the second charge pump circuit 12 increases the output voltage of the battery 30 to 6.4V to 9.2V and outputs it to the multiple first buck circuits 21. The multiple first buck circuits 21 respectively reduce the voltage output by the second charge pump circuit 12 to 5V to 6.4V and output it to the corresponding second sub-loads 71. When the power supply circuit supplies power to the third sub-loads 72, the second charge pump circuit 12 increases the output voltage of the battery 30 to 6.4V to 9.2V and outputs it to the multiple first boost circuits 22. The multiple first boost circuits 22 respectively increase the voltage output by the second charge pump circuit 12 to 9.2V to 12V and output it to the corresponding third sub-loads 72. When the power supply circuit supplies power to the fourth sub-loads 73, the multiple second buck circuits 51 respectively reduce the output voltage of the battery 30 to 1.6V to 3V and output it to the corresponding fourth sub-loads 73. When the power supply circuit supplies power to the fifth sub-loads 74, the multiple second boost circuits 52 respectively boost the output voltage of the battery 30 to 6.4V to 9.2V and output it to the corresponding fifth sub-loads 74.

[0076] By adding the first charge pump circuit 11 to the power supply circuit, the voltage conversion efficiency of the first buck circuit 21 is increased from 80% to 85%. Since the voltage conversion efficiency of the first charge pump circuit 11 is about 98%, the efficiency of the power supply circuit supplying power to the first sub-loads 70 through the first charge pump circuit 11 and the first buck circuit 21 is:

[0077] 98% × 85% = 83.3%;

[0078] 83.3% - 80% = 3.3%.

[0079] Compared with the power supply circuit that directly uses the first step-down circuit 21 to supply power to the first sub-load 70, the efficiency of the power supply circuit is increased by 3.3%. The power supply efficiency is increased by 3.3%. For the battery 30 with a battery capacity of 5000 mAh, it is equivalent to an increase in the battery capacity of:

[0080] 5000 × 3.3% = 165 mAh.

[0081] By adding the second charge pump circuit 12 to the power supply circuit, the voltage conversion efficiency of the first boost circuit 22 is increased from 70% to 75%. Since the voltage conversion efficiency of the second charge pump circuit 12 is about 98%, the efficiency of the power supply circuit for supplying power to the third sub-load 72 through the second charge pump circuit 12 and the first boost circuit 22 is:

[0082] 98% × 75% = 73.5%;

[0083] 73.5% - 70% = 3.5%.

[0084] Compared with the power supply circuit that directly uses the first boost circuit 22 to supply power to the third sub-load 72, the efficiency of the power supply circuit is increased by 3.5%. The power supply efficiency is increased by 3.5%. For the battery 30 with a battery capacity of 5000 mAh, it is equivalent to an increase in the battery capacity of:

[0085] 5000 × 3.5% = 175 mAh.

[0086] Therefore, by adding the charge pump circuit 10 to the power supply circuit, the efficiency of the power supply circuit can be effectively improved, and the usage time of the battery 30 can be extended.

[0087] In an exemplary embodiment, an electronic device is provided. The electronic device includes the power supply circuit as described above. The electronic device is, for example, a mobile phone, a laptop computer, a tablet computer, a wearable device, and the like.

[0088] Reference Figure 9 As shown, the electronic device 400 may include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0089] The processing component 402 generally controls the overall operation of the electronic device 400, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0090] The memory 404 is configured to store various types of data to support the operation of the electronic device 400. Examples of such data include instructions for any application or method operating on the electronic device 400, contact data, phone book data, messages, pictures, videos, etc. The memory 404 can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0091] The power component 406 provides power to various components of the electronic device 400. The power component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 400.

[0092] The multimedia component 408 includes a screen that provides an output interface between the electronic device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 408 includes a front camera module and / or a rear camera module. When the electronic device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera module and / or the rear camera module can receive external multimedia data. Each front camera module and rear camera module can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0093] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC) that is configured to receive external audio signals when the electronic device 400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, the audio component 410 further includes a speaker for outputting audio signals.

[0094] The I / O interface 412 provides an interface between the processing component 402 and peripheral interface modules, and the peripheral interface modules may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a power button, and a lock button.

[0095] The sensor component 414 includes one or more sensors for providing status assessments of various aspects of the electronic device 400. For example, the sensor component 414 can detect the on / off state of the electronic device 400, the relative positioning of components, such as the display and keypad of the electronic device 400. The sensor component 414 can also detect a change in the position of the electronic device 400 or a component of the electronic device 400, the presence or absence of user contact with the electronic device 400, the orientation or acceleration / deceleration of the electronic device 400, and a change in the temperature of the electronic device 400. The sensor component 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 414 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0096] The communication component 416 is configured to facilitate communication between the electronic device 400 and other terminals in a wired or wireless manner. The electronic device 400 can access a wireless network based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0097] In an exemplary embodiment, the electronic device 400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0098] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0099] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0100] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed by the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the claims.

[0101] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A power supply circuit, characterized in that: The power supply circuit comprises: A charge pump circuit, wherein a first end of the charge pump circuit is used to couple with a battery of an electronic device, and the charge pump circuit is used to convert an output voltage of the battery; a first voltage conversion circuit, wherein a first end of the first voltage conversion circuit is coupled to a second end of the charge pump circuit, the second end of the first voltage conversion circuit is used to couple to a first load of the electronic device, and the first voltage conversion circuit is used to convert an output voltage of the charge pump circuit to power the first load; A second voltage conversion circuit, wherein the first end of the second voltage conversion circuit is used to couple with the battery, the second end of the second voltage conversion circuit is used to couple with a second load of the electronic device, and the second voltage conversion circuit is used to convert the output voltage of the battery to power the second load.

2. The power supply circuit according to claim 1, characterized in that: The charge pump circuit includes a first charge pump circuit and / or a second charge pump circuit, the first charge pump circuit is used to reduce the output voltage of the battery, and the second charge pump circuit is used to increase the output voltage of the battery.

3. The power supply circuit according to claim 2, characterized in that: The ratio of the output voltage to the input voltage of the first charge pump circuit is 1:2, and the ratio of the output voltage to the input voltage of the second charge pump circuit is 2:

1.

4. The power supply circuit according to claim 2, characterized in that: The first end of the first charge pump circuit and the first end of the second charge pump circuit are both used to couple to the battery; the number of the first voltage conversion circuits is multiple; the first end of some of the first voltage conversion circuits is coupled to the second end of the first charge pump circuit, and the first end of some of the first voltage conversion circuits is coupled to the second end of the second charge pump circuit.

5. The power supply circuit according to claim 4, characterized in that: The first voltage conversion circuit includes a first step-down circuit and / or a first step-up circuit.

6. The power supply circuit according to claim 1, characterized in that: The second voltage conversion circuit includes a second step-down circuit and / or a second step-up circuit.

7. The power supply circuit according to claim 1, characterized in that: The charge pump circuit includes a first charge pump circuit and a second charge pump circuit; the first voltage conversion circuit includes a first step-down circuit and a first step-up circuit; the second voltage conversion circuit includes a second step-down circuit and a second step-up circuit; the first end of the first charge pump circuit and the first end of the second charge pump circuit are both used to couple with the battery; the first end of part of the first step-down circuit is coupled to the second end of the first charge pump circuit, and the first end of part of the first step-down circuit is coupled to the second end of the second charge pump circuit; the first end of each of the first step-up circuits is coupled to the second end of the second charge pump circuit; the first end of each of the second step-down circuits and the first end of each of the second step-up circuits are used to couple with the battery.

8. The power supply circuit according to claim 7, characterized in that: The output voltage of each of the first step-down circuits coupled to the first charge pump circuit is less than or equal to the output voltage of each of the second step-down circuits; the output voltage of each of the first step-down circuits coupled to the second charge pump circuit is less than or equal to the output voltage of each of the second step-up circuits; The output voltage of each of the first boost circuits coupled to the second charge pump circuit is greater than or equal to the output voltage of each of the second boost circuits.

9. An electronic device, characterized in that: The electronic device comprises the power supply circuit according to any one of claims 1 to 8.

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