Chip, battery and electronic equipment

Abstract

The utility model provides a chip, the chip at least comprises a low-dropout voltage stabilizer, a first switch and a first pin, the low-dropout voltage stabilizer at least comprises a first resistor and a feedback loop, the first resistor is connected with the feedback loop in parallel, the first switch is connected with the first resistor and the feedback loop, the on-off of the first switch is controlled by a first signal connected with the first switch, and the first pin is connected with the first switch. The first pin generates a first signal and is connected with the low-dropout regulator, so that the low-dropout regulator controls the feedback loop to output an adjustable voltage based on the first signal; wherein the first signal comprises a low-voltage signal and a high-voltage signal. The utility model also provides a battery and electronic equipment.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a chip, a battery and an electronic equipment. Background Art

[0002] The existing CPUs all have a unified 3V VCCRTC voltage requirement, and there are two ways to solve the VCCRTC on the PC side. The first is to provide the VCCRTC voltage through a button battery, which is generally CR2016 or CR2032, with a voltage of 3.3 to 3V. The second is the RTC in pack method, which means integrating a low-voltage dropout regulator inside the battery to output a 3V voltage to replace the original button battery. In addition, the VCCRTC design method after Intel CPU requires a voltage of 1.5V, which requires the system to add a low-voltage dropout regulator to adjust the voltage from 3V to 1.5V, which also affects the commonality of large batteries. Although future CPUs are likely to use low voltage, AMD currently does not have this demand, which results in two voltages for VCC RTC. Intel models need to add an additional low-voltage dropout regulator to adjust the original VBAT from 3V to 1.5V, resulting in additional material expenses. In addition, the current RTC in pack design is implemented by integrating a low-dropout regulator into the 2nd IC inside the battery. The current low-dropout regulator has a fixed output of 3.3V. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a chip, a battery and an electronic device.

[0004] According to the chip provided in the first aspect of the present application, the chip at least includes:

[0005] A low voltage dropout regulator, the low voltage dropout regulator comprising at least a first resistor and a feedback loop, wherein the first resistor is connected in parallel with the feedback loop;

[0006] A first switch, wherein the first switch is connected to the first resistor and the feedback loop respectively, and the on and off of the first switch is controlled by a first signal connected to the first switch;

[0007] A first pin, generating the first signal, connected to the low-dropout regulator, so that the low-dropout regulator controls the feedback loop to output an adjustable voltage based on the first signal;

[0008] Wherein, the first signal includes a low voltage signal and a high voltage signal.

[0009] According to the chip of at least one embodiment of the present application, when the first signal is a low voltage signal, the first switch is turned on to connect the first resistor to the feedback loop.

[0010] According to the chip of at least one embodiment of the present application, when the first switch is turned on, the feedback loop generates a high-level signal, and the low-dropout regulator outputs a high-voltage signal.

[0011] According to the chip of at least one embodiment of the present application, when the first signal is a high voltage signal and the first switch is disconnected, the first resistor is not connected to the feedback loop.

[0012] According to the chip of at least one embodiment of the present application, when the first switch is disconnected, the signal generated by the feedback loop is a low-level signal, and the low-dropout regulator outputs a low-voltage signal.

[0013] According to the chip of at least one embodiment of the present application, the adjustable voltage includes at least a first voltage and a second voltage.

[0014] According to a chip of at least one embodiment of the present application, the chip is a secondary protection chip.

[0015] According to the battery provided in the second aspect of the present application, the battery includes any one of the above-mentioned chips.

[0016] According to the battery of at least one embodiment of the present application, when the battery is connected to an electronic device through a connector, the electronic device controls whether the first pin is grounded so that the first signal generated by the first pin is a low voltage signal or a high voltage signal.

[0017] According to the electronic device provided in the third aspect of the present application, the electronic device includes any one of the above-mentioned chips or any one of the above-mentioned batteries.

[0018] The chip provided by the present application introduces a low voltage dropout regulator, a first pin and a first resistor on the basis of an existing battery chip, and under the control of a first signal generated by the first pin, controls whether the first resistor is connected to a feedback loop by turning on and off a first switch, thereby making the output voltage value of the low voltage dropout regulator adjustable. Thus, when the chip is used for a battery of an electronic device, VCCRTC is provided by the battery in the electronic device system, saving the space of the electronic device system and the board area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a chip structure according to an embodiment of the present application;

[0020] Figure 2 A schematic diagram showing the signal relationship structure when the chip provided by the present application is connected to a battery and an electronic device system;

[0021] Figure 3 This is a schematic diagram of the structure of a battery connected to an electronic device according to an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the structure of a battery connected to an electronic device according to another embodiment of the present application. DETAILED DESCRIPTION

[0023] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0024] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0026] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0027] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0028] Figure 1 FIG. 4 shows the internal structure of a chip according to an embodiment of the present application. Figure 1 As shown, the chip at least includes: a low voltage dropout regulator, a first switch and a first pin ( Figure 1 The pin corresponding to the Vout_sel signal in the low voltage dropout regulator may also be called the ADJ pin), the low voltage dropout regulator may include a first resistor R and a feedback loop, the first resistor is connected in parallel with the feedback loop, the first switch is respectively connected to the first resistor R and the feedback loop, the on and off of the first switch is controlled by a first signal connected to the first switch, the first pin is connected to the low voltage dropout regulator, and at the same time, the first pin also generates a first signal, so that the low voltage dropout regulator controls the feedback loop based on the first signal to output an adjustable voltage; wherein the first signal includes a low voltage signal and a high voltage signal.

[0029] It should be noted that, in addition to connecting the first resistor in parallel with the feedback loop, other traditional power management circuit topologies, such as Buck, Charge pump, etc., can also be used to achieve voltage conversion. The control logic is consistent, and the control signal is inserted into the feedback loop to achieve output voltage conversion using the control signal.

[0030] The chip provided in the present application introduces a low voltage dropout regulator, a first pin and a first resistor on the basis of an existing battery chip. Under the control of a first signal generated by the first pin, whether the first resistor is connected to a feedback loop is controlled by the on-off of a first switch, thereby making the output voltage value of the low voltage dropout regulator an adjustable voltage.

[0031] In a chip according to an embodiment of the present application, when the first signal is a low voltage signal, the first switch is turned on, and the first resistor is connected to the feedback loop.

[0032] In a chip according to an embodiment of the present application, when the first switch is turned on, the feedback loop generates a high-level signal, and the low-dropout regulator outputs a high-voltage signal.

[0033] In a chip according to an embodiment of the present application, when the first signal is a high voltage signal and the first switch is disconnected, the first resistor is not connected to the feedback loop.

[0034] In a chip according to an embodiment of the present application, when the first switch is disconnected, the signal generated by the feedback loop is a low-level signal, and the low-dropout regulator outputs a low-voltage signal.

[0035] In a chip of one embodiment of the present application, the adjustable voltage includes at least a first voltage and a second voltage. The first voltage may be, for example, 1.5V, and the second voltage may be, for example, 3V.

[0036] In a chip of one embodiment of the present application, the chip is a secondary protection chip.

[0037] The present application also provides a battery, which includes any of the above chips.

[0038] According to a battery in one embodiment of the present application, when the battery is connected to an electronic device through a connector, the electronic device controls whether the first pin is grounded so that the first signal generated by the first pin is a low voltage signal or a high voltage signal.

[0039] According to a battery in one embodiment of the present application, when the battery is connected to an electronic device, the input of the low voltage dropout regulator is powered by the system end of the electronic device, which can prevent the battery from discharging due to VCCRTC level conversion.

[0040] According to a battery in one embodiment of the present application, when the battery is connected to an electronic device, and when the system end of the electronic device is only powered by the battery, the voltage after the chip is connected in series with the electronic device supplies power to the low voltage dropout regulator.

[0041] According to a battery of one embodiment of the present application, when the voltage of the chip is lower than the first voltage threshold, the battery enters the shutdown mode, and the battery no longer outputs voltage to the outside, so that the battery retains a certain capacity to ensure that the voltage of the battery remains continuously output, that is, VCCRTC is in the always on state. At this time, if the battery is connected to an electronic device, the CPU of the electronic device system enters the G3 mode, and the first voltage threshold may be, for example, 3.25V, and the first voltage threshold is designed to be the voltage value corresponding to 0% of the battery. When the battery chip voltage is lower than the second voltage threshold, the battery enters the low power consumption mode, and the second voltage threshold may be, for example, 2.8V. After the BMU (battery management unit) enters the low power consumption mode, it can be ensured that the RTC can continue to output for more than 2yrs. When the battery chip voltage is lower than the third voltage threshold, 2.5V, the output of VCCRTC is stopped, and the third voltage threshold may be, for example, 2.5V.

[0042] The battery provided in this application, because it uses the chip provided in this application, can be compatible with 3V and 1.5V voltage usage requirements, which is conducive to the commonality of large batteries.

[0043] Figure 2 The signal relationship between the chip provided by the present application and the battery and electronic device system is shown, such as Figure 2 As shown, ADJ is the first pin, p+ is the voltage connected to the system end, vcorepack is the chip voltage of the battery, and Vout (i.e., Vbatt) supplies power to the VCCRTC of the CPU through the battery connector. The board end of the electronic device no longer needs to reserve a low voltage dropout regulator for voltage regulation.

[0044] Figure 3 A schematic diagram of a battery and electronic device system connection structure provided by the present application is shown, such as Figure 3 As shown, the battery is connected to the electronic device system motherboard end through a connector. When the system motherboard end needs to use the first CPU (i.e., CPU1), since the CPU requires a low voltage, i.e., a 1.5V voltage, at this time, the motherboard end is not connected to the first pin ADJ pin, and the first signal ( Figure 3 The Vout_sel signal in the feedback loop is a high voltage signal, so that the first switch is disconnected, the first resistor is not connected to the feedback loop, the feedback loop generates a low level signal, and the low dropout regulator outputs a low voltage signal Vout, wherein the calculation method of Vout can be calculated by the following formula: Vout=Vref*(1+R' / R2), R'=R1 / R2=R*R1(R+R1).

[0045] Figure 4 A schematic diagram of a connection structure of another battery and electronic device system provided by the present application is shown. Figure 4As shown, the battery is connected to the electronic device system motherboard end through a connector. When the system motherboard end needs to use the second CPU (i.e., CPU2), since the CPU requires a high voltage, i.e., 3.3V voltage, at this time, the motherboard end grounds the first pin ADJ pin, and the first signal ( Figure 4 The Vout_sel signal in the circuit is a low voltage signal, so that the first switch is turned on, the first resistor is connected to the feedback loop, the feedback loop generates a high level signal, and the low voltage dropout regulator outputs a high voltage signal Vout, wherein the calculation method of Vout can be calculated by the following formula: Vout = Vref * (1 + R1 / R2). Optionally, the traditional resistor voltage division method can also be used for calculation; Vout = VDD * R2 / (R1 + R2).

[0046] The present application also provides an electronic device, which includes any of the above chips or any of the above batteries.

[0047] The electronic device provided in the present application uses the battery provided in the present application and including the above-mentioned chip, so that VCCRTC can be provided by the battery in the electronic device system, thereby saving the electronic device system space and board area. The electronic device does not need to add an additional low voltage dropout regulator, thereby reducing the material cost of the electronic device.

[0048] It should be understood that the various parts of the present application can be implemented by hardware, software or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0049] A person skilled in the art may understand that all or part of the steps of implementing the above-mentioned implementation method may be completed by instructing related hardware through a program, and the program may be stored in a readable storage medium, which, when executed, includes one or a combination of the steps of the implementation method.

[0050] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a readable storage medium. The storage medium may be a read-only memory, a disk or an optical disk, etc.

[0051] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms are not necessarily the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present application, and are not intended to limit the scope of the present application. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present application.

Claims

1. A chip, characterized in that: The chip at least comprises: A low voltage dropout regulator, the low voltage dropout regulator comprising at least a first resistor and a feedback loop, wherein the first resistor is connected in parallel with the feedback loop; A first switch, wherein the first switch is connected to the first resistor and the feedback loop respectively, and the on and off of the first switch is controlled by a first signal connected to the first switch; A first pin, generating the first signal, connected to the low-dropout regulator, so that the low-dropout regulator controls the feedback loop to output an adjustable voltage based on the first signal; Wherein, the first signal includes a low voltage signal and a high voltage signal.

2. The chip according to claim 1, characterized in that: When the first signal is a low voltage signal, the first switch is turned on to connect the first resistor to the feedback loop.

3. The chip according to claim 2, characterized in that: When the first switch is turned on, the feedback loop generates a high level signal, and the low voltage dropout regulator outputs a high voltage signal.

4. The chip according to claim 1, characterized in that: When the first signal is a high voltage signal and the first switch is disconnected, the first resistor is not connected to the feedback loop.

5. The chip according to claim 4, characterized in that: When the first switch is disconnected, the signal generated by the feedback loop is a low-level signal, and the low-dropout regulator outputs a low-voltage signal.

6. The chip according to claim 1, characterized in that: The adjustable voltage includes at least a first voltage and a second voltage.

7. The chip according to claim 1, characterized in that: The chip is a secondary protection chip.

8. A battery, characterized in that: The battery comprises the chip according to any one of claims 1 to 7.

9. The battery according to claim 8, characterized in that When the battery is connected to an electronic device through a connector, the electronic device controls whether the first pin is grounded, so that the first signal generated by the first pin is a low voltage signal or a high voltage signal.

10. An electronic device, characterized in that: The electronic device comprises the chip described in any one of claims 1 to 7 or the battery described in any one of claims 8 to 9.

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