CN213846239U - Power supply circuit and terminal equipment - Google Patents
Power supply circuit and terminal equipment Download PDFInfo
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- CN213846239U CN213846239U CN202022814632.5U CN202022814632U CN213846239U CN 213846239 U CN213846239 U CN 213846239U CN 202022814632 U CN202022814632 U CN 202022814632U CN 213846239 U CN213846239 U CN 213846239U
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Abstract
The present disclosure provides a power supply circuit and a terminal device, the power supply circuit includes: the first power supply branch comprises a power supply and a power utilization element; the second power supply branch comprises a charging interface and the power utilization element; a controller configured to control at least one of the first and second power supply branches to be conductive. The controller can select the branch circuit with the voltage meeting the requirement from the two power supply branch circuits to supply power to the electric element, and the electric element can present a state different from that before the power supply after being supplied with power so as to present a quick and normal response and improve the response speed and quality.
Description
Technical Field
The disclosure relates to the technical field of terminal equipment, in particular to a power supply circuit and terminal equipment.
Background
With the improvement of living standard and the progress of science and technology, more and more wearable devices and more abundant types and functions are provided in the life of people. Wearable equipment is used by the start from leaving the factory, often can experience processes such as transportation, storage, idle, because the battery is from the stand-by power consumption of discharging and wearable equipment itself, can lead to the battery to get into the overdischarge state. In the related art, when a user operates a wearable device whose battery is in an over-discharge state, the response characteristic of the wearable device needs to be improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art, the present disclosure provides a power supply circuit and a terminal device, so as to solve the defects in the related art.
Specifically, the present disclosure is realized by the following technical solutions:
in a first aspect, a power supply circuit is provided, which is applied to a terminal device, and includes:
the first power supply branch comprises a power supply and a power utilization element;
the second power supply branch comprises a charging interface and the power utilization element;
a controller configured to control at least one of the first and second power supply branches to be conductive.
In one embodiment, the controller is configured to control at least one of the first power supply branch and the second power supply branch to be turned on according to a voltage of the power supply and a voltage of the charging interface.
In one embodiment, the controller is configured to control the second power supply branch to be turned on and the first power supply branch to be turned off if the voltage of the power supply is lower than a first voltage threshold and the voltage of the charging interface is higher than a second voltage threshold.
In one embodiment, the controller is configured to control the first power supply branch to be turned on if the voltage of the power supply rises from below the first voltage threshold to above or equal to the first voltage threshold, and to control the second power supply branch to be turned off if the on-time of the first power supply branch reaches a time threshold.
In one embodiment, the controller is configured to control the first power supply branch to conduct if the voltage of the power supply is higher than or equal to a first voltage threshold.
In one embodiment, the first power supply branch further includes a first switching unit; the first control terminal of the controller is connected with the first switch unit and configured to control the state of the first switch unit.
In one embodiment, the first switching unit comprises two switching tubes connected in series and in opposite directions.
In one embodiment, the first control end is respectively connected with the control electrodes of the two switch tubes and is configured to synchronously control the on-off of the two switch tubes.
In one embodiment, the second power supply branch further comprises a second voltage stabilization unit; the second control end of the controller is connected with the second voltage stabilizing unit and is configured to control the state of the second voltage stabilizing unit.
In one embodiment, the second power supply branch further includes a diode, and the diode unidirectionally conducts a first direction of the second power supply branch, where the first direction of the second power supply branch is a direction from the charging interface to the power consuming element.
In one embodiment, the controller includes a first detection terminal and a second detection terminal;
wherein the first detection terminal is connected with an output terminal of the power supply and configured to detect an output voltage of the power supply;
the second detection end is connected with the output end of the charging interface and configured to detect the output voltage of the charging interface.
In one embodiment, the power consuming element is a display screen.
In a second aspect, a terminal device is provided, which includes the power supply circuit of the first aspect.
The technical scheme provided by the embodiment of the specification can have the following beneficial effects:
the power supply circuit in the embodiment of the disclosure, through setting up two parallelly connected power supply branch roads, make the power with charge the interface homoenergetic for the consumer, and the controller can further control the break-make of above-mentioned two power supply branch roads again, consequently the controller can select the branch road that the voltage meets the requirements to supply power to the consumer in two power supply branch roads, for example, can use the branch road that the interface that charges corresponds to supply power when the battery is in the state of putting excessively, and the consumer can demonstrate after being supplied power with the state different before supplying power, in order to demonstrate quick and normal response, response speed and quality have been improved.
Drawings
Fig. 1 is a schematic diagram of a power supply circuit shown in an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a power supply circuit shown in another exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a power supply circuit shown in yet another exemplary embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a power supply circuit shown in yet another exemplary embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a power supply circuit shown in yet another exemplary embodiment of the present disclosure;
fig. 6 is a circuit partial schematic diagram of a power supply circuit shown in an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
With the improvement of living standard and the progress of science and technology, more and more wearable devices and more abundant types and functions are provided in the life of people. Wearable equipment is used by the start from leaving the factory, often can experience processes such as transportation, storage, idle, because the battery is from the stand-by power consumption of discharging and wearable equipment itself, can lead to the battery to get into the overdischarge state. In the related art, when a user operates a wearable device with a battery in an over-discharge state, the wearable device cannot respond quickly and normally.
Specifically, the wearable device in the related art cannot be started when being in an over-put state, that is, cannot be turned on to enter a starting interface, so that a user cannot obtain any response when starting; if the user knows the overdischarge state of the wearable device, the user can connect the charger to the wearable device and then start the device, at the moment, the battery of the wearable device is trickle charged by the charger, and the wearable device is started by being lightened after the voltage of the battery reaches the voltage required by starting the device, so that the user can obtain a starting response after a certain time after the user performs the starting operation; if the user learns behind the overdischarge state of wearable equipment, can connect the charger for wearable equipment and then carry out the start operation, wearable equipment has executed bright screen start response by the charger power supply this moment, and the charger lasts for wearable equipment power supply and lasts for the battery charging of wearable equipment, and when the charger was removed, the switching was the battery and is the wearable equipment power supply, but there was the vacuum time when charger power supply and battery power supply switched, voltage is unstable in the vacuum time, unusual responses such as splash screen can appear in the screen.
Based on this, please refer to fig. 1, the present disclosure provides a power supply circuit applied to a terminal device, the power supply circuit includes: a first power supply branch comprising a power source 102 and a power consuming element 101; the second power supply branch comprises a charging interface 103 and the power utilization element 101; a controller 104 configured to control at least one of the first power supply branch and the second power supply branch to be conductive.
The terminal device may be a smart phone, a tablet computer, a desktop/laptop/handheld computer, a notebook computer, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR)/Virtual Reality (VR) device, and the like, which include a display screen or a device capable of performing interface display, and embodiments of the present disclosure are not intended to limit the specific form of the terminal device.
The power source 102 may be a battery, and the battery may be a lithium battery, a nickel metal hydride battery, or the like, and the present disclosure is not intended to limit the kind of the battery. The battery, as an electrical energy storage element, can be charged and discharged, and can supply power to the electric element 101 when it is discharged, and the voltage gradually decreases during the continuous discharge of the battery. The charging interface 103 can be connected to a power adapter (also known as a charger) to obtain electric energy from the mains grid, transform the electric energy to supply power to the power consuming element 101 and charge the power source 102. The controller 104 may be a dedicated controller for controlling on/off of the power consuming element 101, the power supply 102 and the charging interface 103, and may be, for example, a Microcontroller (MCU), or a dedicated module integrated on a motherboard of the terminal device.
The power source 102 is connected to the power consuming element 101 to form a first power supply branch, and the charging interface 103 is connected to the power consuming element 101 to form a second power supply branch, so that the controller 104 controls at least one of the first power supply branch and the second power supply branch to be conducted, that is, controls at least one of the power source 102 and the charging interface 103 to be conducted with the power consuming element 101, and when the controller 104 performs the above control, the power source 101 needs to be used to obtain fast and stable power supply.
Among other things, the power consuming element 101 can assume different states when powered on and off, and thus can assume a well-defined response when powered on. In one example, the electric component is a Display screen, and may be a Liquid Crystal Display (LCD) screen or an Organic Light-Emitting semiconductor (OLED) screen.
The power supply circuit in the embodiment of the disclosure, by setting two parallel power supply branches, both the power supply 102 and the charging interface 103 can charge the power consumption element 101, and the controller 104 can further control the on-off of the two power supply branches, so that the controller can select a branch with a voltage meeting the requirement from the two power supply branches to supply power to the power consumption element 101, for example, the branch corresponding to the charging interface 103 can be used for supplying power when the power supply 102 is in an over-discharge state, and the power consumption element 101 can present different states after being supplied with power before supplying power, so as to present a quick and normal response, thereby improving the response speed and quality.
With continued reference to fig. 1, in some embodiments of the present disclosure, the controller 104 is configured to control at least one of the first power supply branch and the second power supply branch to be turned on according to a voltage of the power source 102 and a voltage of the charging interface 103.
The controller 104 may be connected to the power source 102 and the charging interface 103, and connected to the first power supply branch and the second power supply branch. The controller 104 controls the power supply to the electric element 101 based on the voltage of the power source 102 and the voltage of the charging interface 103, thereby further improving the control accuracy and ensuring that the electric element 101 is supplied with power quickly and stably.
In some embodiments of the present disclosure, the controller is configured to control the second power supply branch to be turned on and the first power supply branch to be turned off if the voltage of the power supply is lower than a first voltage threshold and the voltage of the charging interface is higher than a second voltage threshold.
The second power supply branch is connected and the first power supply branch is disconnected, that is, the charging interface is connected with the electric element, and the power supply is disconnected with the electric element.
When the voltage of the power supply is lower than the first voltage threshold and the voltage of the charging interface is higher than the second voltage threshold, the power supply is in an over-discharge state, and the terminal equipment is connected with the charger, so that the charger can be used for supplying power to the electric element, namely, the charging interface is communicated with a branch of the electric element, and the power supply is disconnected from the branch of the electric element, therefore, when the power supply is over-discharged, the charger is connected to supply power to the electric element quickly, for example, the display screen is supplied with power, so that the display screen is lightened, and the successful start-up is indicated.
In some embodiments of the present disclosure, the controller is configured to control the first power supply branch to be turned on if the voltage of the power supply rises from below the first voltage threshold to above or equal to the first voltage threshold, and to control the second power supply branch to be turned off if the on-time of the first power supply branch reaches a time threshold.
After the power supply is overdischarged and the charger is connected, the charger supplies power to the electric elements, and charges the power supply (such as a battery) through a charge pump (charger), so that the voltage of the battery is gradually increased. When the voltage of the power supply rises from being lower than the first voltage threshold to being higher than or equal to the first voltage threshold, namely the over-discharge state of the power supply is released, the power supply recovers to the normal state and can supply power normally, so that the power supply can be switched to the power supply, namely the power supply is controlled to be conducted with the electric element, namely a first power supply branch is conducted; meanwhile, the charging interface is not disconnected to the second power supply branch of the electric element at once, but the first power supply branch is disconnected after the on-time of the first power supply branch reaches a time threshold value, the second power supply branch is disconnected after a period of time is prolonged, the vacuum time caused by switching the power supply branches can be avoided, and further the power supply abnormality of the electric element is avoided, for example, the display screen is prevented from being flickered.
In some embodiments of the present disclosure, the controller is configured to control the first power supply branch to conduct if the voltage of the power supply is higher than or equal to a first voltage threshold.
The power supply circuit is used for supplying power to the power consumption element, the voltage of the power supply is higher than or equal to the first voltage threshold at the initial moment, so that whether the voltage of the charging interface is higher than the second voltage threshold or not, namely whether the charging interface is connected with a charger or not, the power supply is preferentially conducted to the first power supply branch of the power consumption element, namely the power supply is preferentially used for supplying power, and the situation is one of the scenes when the terminal equipment is normally used, so that the normal power supply of the terminal equipment is further ensured, and the response characteristic of the terminal equipment is improved.
Referring to fig. 2, in some embodiments of the present disclosure, the first power supply branch further includes a first switching unit 205; a first control terminal of the controller 204 is connected to the first switching unit 205 and configured to control a state of the first switching unit 205. The connection relationship among the electric element 201, the power source 202, the charging interface 203, and the controller 204 may be the same as that shown in fig. 1. The first switch unit 205 may be disposed between the power source 202 and the electric element 201, and the on/off of the first power supply branch from the power source 202 to the electric element 201 can be accurately controlled by the first switch unit 205, that is, when the first switch unit 205 is turned on, the first power supply branch is turned on, and when the first switch unit 205 is turned off, the first power supply branch is turned off.
Referring to fig. 3, in some embodiments of the present disclosure, the first power supply branch further includes a first voltage stabilizing unit 306 disposed on a line between the first switching unit 305 and the power consuming element 301. The connection relationship among the electric element 301, the power source 302, the charging interface 303, the controller 304, and the first switch unit 305 may be the same as the connection relationship shown in fig. 2.
Referring to fig. 4, in some embodiments of the present disclosure, the second power supply branch further includes a second voltage stabilizing unit 407; a second control terminal of the controller 404 is connected to the second voltage stabilizing unit 407, and is configured to control a state of the second voltage stabilizing unit 407. Here, the connection relationship among the electric element 401, the power source 402, the charging interface 403, the controller 404, the first switching unit 405, and the first voltage stabilization unit 406 may be the same as the connection relationship shown in fig. 3. The second voltage stabilizing unit 407 may be disposed on a line between the charging interface 403 and the electric component 401.
The first voltage stabilizing unit and the second voltage stabilizing unit can adopt low dropout regulators (LDOs), and have the function of outputting stable voltage, and the voltage difference between the input voltage and the output voltage is small, so that the requirement on the input voltage is low; and the low dropout linear regulator also has the on-off function, namely the first voltage stabilizing unit and the second voltage stabilizing unit have the on-off function, and can play the same effect as the switch unit.
Therefore, the first voltage stabilizing unit can reduce the output voltage of the power supply, stably output the preset rated voltage, and further supply power to the electric element so as to obtain stable and normal power supply by using the electric element, thereby improving the response characteristic of the terminal equipment; the first voltage stabilizing unit can be further connected with the controller so as to further control the on-off state of the first power supply branch circuit according to the instruction of the controller.
Therefore, the second voltage stabilizing unit can reduce the output voltage of the charging interface, stably output the preset rated voltage, and further supply power to the electric element so as to obtain stable and normal power supply by the electric element, thereby improving the response characteristic of the terminal equipment; the second voltage stabilizing unit is controlled by the controller to switch the charging interface to the on-off state of a second power supply branch of the power utilization element.
Through set up voltage stabilizing unit on two power supply branches respectively, when can making two branches supply power for the consumer, the homoenergetic can stably output predetermined rated voltage to guarantee the stability, the normal operating of consumer, improved terminal equipment's response characteristic.
Referring to fig. 5, in some embodiments of the present disclosure, the second power supply branch further includes a diode 508, and the diode 508 unidirectionally conducts a first direction of the second power supply branch, where the first direction of the second power supply branch is a direction from the charging interface 503 to the electric component 501. The diode 508 may be disposed on a line between the charging interface 503 and the second voltage stabilizing unit 507, and the diode 508 unidirectionally conducts the charging interface 503 to the second voltage stabilizing unit 507. The connection relationship among the electric component 501, the power supply 502, the charging interface 503, the controller 504, the first switching unit 505, the first voltage stabilizing unit 506, and the second voltage stabilizing unit 507 may be the same as the connection relationship shown in fig. 4. The diode 508 unidirectionally conducts the charging interface 503 to the second voltage stabilizing unit 507, so that the diode 508 can cut off the second voltage stabilizing unit 507 from the charging interface 503, that is, when the charging interface 503 supplies power to the electric element 501, current can flow through the diode 508, and when the power supply 502 supplies power to the electric element 501, the current of the power supply 502 cannot flow in the reverse direction to the charging interface 503 through the diode 508, thereby avoiding waste of electric energy and ensuring stable power supply of the electric element 501.
Referring to fig. 6, a partial circuit diagram of a power supply circuit according to some embodiments of the present disclosure is shown, in which a controller employs a microcontroller MCU, and a specific structure of the controller MCU is described in detail below. The controller MCU comprises a first detection end BATTERY _ ADC, a second detection end POWER _ DET, a first control end BATTERY _ EN and a second control end POWER _ EN, wherein the first detection end BATTERY _ ADC is connected with an output end BATTERY + of the POWER supply and used for detecting the output voltage of the POWER supply, the second detection end POWER _ DET is connected with an output end POWER _ IN of the charging interface and used for detecting the output voltage of the charging interface, the first control end BATTERY _ EN is connected with the first switch unit and used for controlling the on-off state of the first switch unit, and the second control end POWER _ EN is connected with the second voltage stabilizing unit U2 and used for controlling the on-off state of the second voltage stabilizing unit U2.
The first switch unit comprises two switch tubes Q1 and Q2 which are connected in series and in reverse, wherein the source of the switch tube Q1 is connected with the output terminal BATTERY + of the power supply, the drain of the switch tube Q1 is connected with the drain of the switch tube Q2, the source of the switch tube Q2 is connected with the first voltage stabilizing unit U1, the gate of the switch tube Q1 and the gate of the switch tube Q2 are both connected with the first control terminal BATTERY _ EN, so that the first control terminal BATTERY _ EN can synchronously control the on-off of the two switch tubes Q1 and Q2, that is, when the power supply supplies power to the electric element, the first control terminal BATTERY _ EN synchronously controls the two switch tubes Q1 and Q2 to be communicated, so that the current of the power supply smoothly flows through the two switch tubes Q1 and Q2 to reach the first voltage stabilizing unit 686U 8, when the charging interface supplies power to the electric element, the first control terminal BATTERY _ EN synchronously controls the two switch tubes Q636 and Q73742 to be communicated with the first voltage stabilizing unit 2, so that the current of the first voltage stabilizing unit Q2 can be communicated, the switch tube Q1 can cut off the reverse current flowing into the power supply of the charging interface, thereby avoiding the waste of electric energy and ensuring the stable power supply of the electric elements. Preferably, another switching tube Q3 is disposed between the first control terminal BATTERY _ EN and the two switching tubes Q1 and Q2, that is, the first control terminal BATTERY _ EN is connected to the gate of the switching tube Q3, the drain of the switching tube Q3 is connected to the gate of the switching tube Q1 and the gate of the switching tube Q2, respectively, and the source of the switching tube Q3 is grounded, so that when the first control terminal BATTERY _ EN controls the switching tube Q3 to be connected, the gates of the switching tubes Q1 and Q2 are grounded, and therefore both are disconnected in a low level condition, and when the first control terminal BATTERY _ EN controls the switching tube Q3 to be disconnected, the gates of the switching tubes Q1 and Q2 are connected in a high level condition.
The first voltage stabilizing unit U1 includes a first input terminal VIN, a first output terminal VOUT, a first enable terminal EN, a first ground terminal GND, and a first power ground terminal PGND, where the first input terminal VOUT and the first enable terminal EN are respectively connected to the first switch unit, the first output terminal VOUT is connected to the power-consuming element, and the first ground terminal GND and the first power ground terminal PGND are respectively grounded. When the first switching unit is turned on, the current of the power supply flows to the first enable terminal EN to enable the first switching unit, so that the first voltage regulation unit U1 is turned on.
The second voltage stabilizing unit U2 includes a second input terminal VIN, a second output terminal VOUT, a second enable terminal EN, a second ground terminal GND, and a second POWER ground terminal PGND, where the second input terminal VIN is connected to the output terminal POWER _ IN of the charging interface, the second output terminal VOUT is connected to the POWER-consuming element, the second ground terminal GND and the second POWER ground terminal PGND are respectively grounded, and the second enable terminal EN is connected to the second control terminal POWER _ EN. Therefore, the second control terminal POWER _ EN can enable the second enable terminal EN to connect the second regulator unit U2 and disable the second enable terminal EN to disconnect the second regulator unit U2.
In a second aspect, a terminal device is provided, which includes the power supply circuit of the first aspect. Wherein, terminal equipment can be cell-phone, mobile computer, panel computer and wearable equipment, and is preferred, wearable equipment includes: smart watches, smart bracelets, or smart headsets.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. A power supply circuit, applied to a terminal device, the power supply circuit comprising:
the first power supply branch comprises a power supply and a power utilization element;
the second power supply branch comprises a charging interface and the power utilization element;
a controller configured to control at least one of the first and second power supply branches to be conductive.
2. The power supply circuit of claim 1, wherein the controller is configured to control at least one of the first power supply branch and the second power supply branch to conduct according to a voltage of the power supply and a voltage of the charging interface.
3. The power supply circuit of claim 1, wherein the controller is configured to control the second power branch to be turned on and the first power branch to be turned off if the voltage of the power supply is lower than a first voltage threshold and the voltage of the charging interface is higher than a second voltage threshold.
4. The power supply circuit according to any one of claims 1 to 3, wherein the controller is configured to control the first power supply branch to conduct if the voltage of the power supply is higher than or equal to a first voltage threshold; and/or
The controller is configured to control the second power supply branch to be disconnected if the on-time of the first power supply branch reaches a time threshold.
5. The power supply circuit of claim 1, wherein the first power supply branch further comprises a first switching unit; the first control terminal of the controller is connected with the first switch unit and configured to control the state of the first switch unit.
6. The power supply circuit of claim 5, wherein the first switching unit comprises two switching tubes connected in series and in opposite directions.
7. The power supply circuit according to claim 6, wherein the first control terminal is respectively connected to control electrodes of the two switching tubes, and configured to synchronously control on and off of the two switching tubes.
8. The power supply circuit of claim 1, wherein the second power supply branch further comprises a second voltage stabilization unit; the second control end of the controller is connected with the second voltage stabilizing unit and is configured to control the state of the second voltage stabilizing unit.
9. The power supply circuit of claim 8, wherein the second power supply branch further comprises a diode, and the diode unidirectionally conducts a first direction of the second power supply branch, wherein the first direction of the second power supply branch is a direction from the charging interface to the power consuming component.
10. The power supply circuit of claim 1, wherein the controller comprises a first detection terminal and a second detection terminal;
wherein the first detection terminal is connected with an output terminal of the power supply and configured to detect an output voltage of the power supply;
the second detection end is connected with the output end of the charging interface and configured to detect the output voltage of the charging interface.
11. The power supply circuit according to claim 1, wherein the power consuming element is a display screen.
12. A terminal device, characterized in that it comprises a supply circuit according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022814632.5U CN213846239U (en) | 2020-11-27 | 2020-11-27 | Power supply circuit and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022814632.5U CN213846239U (en) | 2020-11-27 | 2020-11-27 | Power supply circuit and terminal equipment |
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| CN213846239U true CN213846239U (en) | 2021-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114860017A (en) * | 2022-04-15 | 2022-08-05 | 芯海科技（深圳）股份有限公司 | LDO circuit, control method, chip and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114860017A (en) * | 2022-04-15 | 2022-08-05 | 芯海科技（深圳）股份有限公司 | LDO circuit, control method, chip and electronic equipment |
| CN114860017B (en) * | 2022-04-15 | 2023-09-26 | 芯海科技（深圳）股份有限公司 | LDO circuit, control method, chip and electronic equipment |
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