Voltage generating unit and electronic device

Abstract

The present disclosure provides a voltage generating unit, comprising: a first voltage generating module for generating a first voltage; a second voltage generating module for generating a second voltage; a first voltage adjusting module, the first voltage adjusting module is used to receive the first voltage and adjust the first voltage to output a first adjusted voltage; a second voltage adjusting module, the second voltage adjusting module is used to receive the second voltage and adjust the second voltage to output a second adjusted voltage; a control module, the control module receives the first adjusted voltage and the second adjusted voltage, and controls the first voltage adjusting module and / or the second voltage adjusting module to adjust the first voltage and / or the second voltage based on the relevant information of the first adjusted voltage and / or the relevant information of the second adjusted voltage; and an adding module, the adding module receives the first adjusted voltage and the second adjusted voltage and generates a third voltage. The present disclosure also provides an electronic device.

Description

Technical Field

[0001] The present disclosure relates to a voltage generating unit and an electronic device. Background Art

[0002] In an integrated circuit, an absolute voltage is required as a reference value for a stable standard, but the voltage value may change due to the influence of external conditions. Therefore, how to obtain the voltage reference value is a technical problem that has been solved in the art.

[0003] In the prior art, the stability of the output voltage is mainly improved by improving the electronic devices of the reference source. However, the process of improving the electronic devices will inevitably increase the cost greatly, and the electronic devices will be affected by external conditions and their parameters will also change. Therefore, even if improvements are made, it will more or less affect the output voltage.

[0004] For example, in a reference source affected by temperature, the prior art is usually used to eliminate first-order effects, but higher-order effects still exist, so the variation of the reference voltage caused by the temperature of the reference source still exists. Summary of the invention

[0005] In order to solve one of the above technical problems, the present disclosure provides a voltage generating unit and an electronic device.

[0006] According to one aspect of the present disclosure, a voltage generating unit includes:

[0007] A first voltage generating module, used to generate a first voltage;

[0008] A second voltage generating module, used for generating a second voltage;

[0009] a first voltage adjustment module, the first voltage adjustment module being configured to receive the first voltage and adjust the first voltage to output a first adjusted voltage;

[0010] a second voltage adjustment module, the second voltage adjustment module being configured to receive the second voltage and adjust the second voltage to output a second adjusted voltage;

[0011] a control module, wherein the control module receives the first adjustment voltage and the second adjustment voltage, and controls the first voltage adjustment module and / or the second voltage adjustment module to adjust the first voltage and / or the second voltage based on relevant information of the first adjustment voltage and / or relevant information of the second adjustment voltage; and

[0012] An adding module receives the first adjustment voltage and the second adjustment voltage and generates a third voltage.

[0013] According to at least one embodiment of the present disclosure, the voltage generating unit further includes:

[0014] a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first adjustment voltage, perform analog-to-digital conversion on the first adjustment voltage, and provide a converted first digital signal to the control module; and

[0015] A second analog-to-digital conversion module is used to collect the second adjustment voltage, perform analog-to-digital conversion on the second adjustment voltage, and provide the converted first digital signal to the control module.

[0016] According to the voltage generating unit of at least one embodiment of the present disclosure, the first analog-to-digital conversion module and the second analog-to-digital conversion module use the third voltage as a reference voltage to convert the first adjustment voltage into a first digital signal and convert the second adjustment voltage into a second digital signal.

[0017] According to the voltage generating unit of at least one embodiment of the present disclosure, the first voltage adjustment module includes a first coefficient adjustment module and a first multiplication module, the control module controls the adjustment of the first coefficient, and the first multiplication module multiplies the adjusted first coefficient by the first voltage to obtain the first adjusted voltage; or

[0018] The second voltage adjustment module includes a second coefficient adjustment module and a second multiplication module. The control module controls the adjustment of the second coefficient, and the second multiplication module multiplies the adjusted second coefficient by the second voltage to obtain the second adjusted voltage.

[0019] According to the voltage generating unit of at least one embodiment of the present disclosure, the control module controls the first voltage adjusting module to adjust the first voltage according to the difference between the first adjusted voltage at the second moment and the first voltage at the first moment; or

[0020] The control module controls the second voltage adjustment module to adjust the second voltage according to a difference between the second adjustment voltage at a second moment and the second voltage at a first moment, wherein the second moment is a moment after the first moment.

[0021] According to the voltage generating unit of at least one embodiment of the present disclosure, the control module performs control based on making the difference between the first adjusted voltage at the second moment and the first voltage at the first moment equal to zero, or the control module performs control based on making the difference between the second adjusted voltage at the second moment and the second voltage at the first moment equal to zero.

[0022] According to the voltage generating unit of at least one embodiment of the present disclosure, the first analog-to-digital conversion module receives a first adjustment voltage at a first moment and a first adjustment voltage at a second moment, obtains a first voltage change value according to the first adjustment voltage at the first moment and the first adjustment voltage at the second moment, and

[0023] The second analog-to-digital conversion module receives the second adjustment voltage at a first moment and the second adjustment voltage at a second moment, and obtains a second voltage change value according to the second adjustment voltage at the first moment and the second adjustment voltage at the second moment.

[0024] According to the voltage generating unit of at least one embodiment of the present disclosure, the control module adjusts the first adjustment voltage and / or the second adjustment voltage according to a comparison result between the first voltage change value and the second voltage change value.

[0025] According to the voltage generating unit of at least one embodiment of the present disclosure, the control module adjusts the first voltage and / or the second voltage based on the standard that the difference between the first voltage change value and the second voltage change value is equal to zero.

[0026] According to the voltage generating unit of at least one embodiment of the present disclosure, when the change value of the first voltage is greater than the change value of the second voltage, the first adjustment voltage is increased and / or the second adjustment voltage is decreased.

[0027] According to the voltage generating unit of at least one embodiment of the present disclosure, the control module adjusts the first voltage to obtain the first adjusted voltage based on a first functional relationship between an external condition and the first voltage generated by the first voltage generating module, and / or the control module adjusts the first voltage to obtain the first adjusted voltage based on a second functional relationship between an external condition and the second voltage generated by the second voltage generating module.

[0028] According to the voltage generating unit of at least one embodiment of the present disclosure, the voltage generating unit also includes a detection module, which is used to detect the external condition so as to obtain the first adjustment voltage according to the detected external condition and the first functional relationship, and / or obtain the second adjustment voltage according to the detected external condition and the second functional relationship.

[0029] According to at least one embodiment of the present disclosure, the voltage generating unit further includes:

[0030] a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first adjustment voltage, perform analog-to-digital conversion on the first adjustment voltage, and provide a converted first digital signal to the control module; and

[0031] A second analog-to-digital conversion module is used to collect the second adjustment voltage, perform analog-to-digital conversion on the second adjustment voltage, and provide the converted first digital signal to the control module.

[0032] According to the voltage generating unit of at least one embodiment of the present disclosure, the first analog-to-digital conversion module and the second analog-to-digital conversion module use the third voltage as a reference voltage to convert the first adjustment voltage into a first digital signal and convert the second adjustment voltage into a second digital signal.

[0033] According to at least one embodiment of the present disclosure, the voltage generating unit further includes a function establishment module, which obtains the functional relationship between the external condition and the first voltage and the functional relationship between the external condition and the second voltage by obtaining changes in the first voltage and the second voltage under different external conditions.

[0034] According to at least one embodiment of the present disclosure, the voltage generating unit further includes:

[0035] a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first voltage, perform analog-to-digital conversion on the first voltage, and provide the converted first digital signal to the function establishment module; and

[0036] A second analog-to-digital conversion module is used to collect the second voltage, perform analog-to-digital conversion on the second voltage, and provide the converted first digital signal to the function establishment module.

[0037] According to the voltage generating unit of at least one embodiment of the present disclosure, the first analog-to-digital conversion module and the second analog-to-digital conversion module are provided with a benchmark voltage so as to convert the first voltage and the second voltage into the first digital signal and the second digital signal respectively according to the benchmark voltage.

[0038] According to the voltage generating unit of at least one embodiment of the present disclosure, the first voltage generated by the first voltage generating module and the second voltage generated by the second voltage generating module are voltages that vary with external conditions.

[0039] According to the voltage generating unit of at least one embodiment of the present disclosure, the external condition is temperature, current and / or voltage.

[0040] According to the voltage generating unit of at least one embodiment of the present disclosure, the first voltage is a positive temperature coefficient voltage and the second voltage is a negative temperature coefficient voltage, or

[0041] The first voltage is a positive current coefficient voltage and the second voltage is a negative current coefficient voltage, or

[0042] The first voltage is a positive voltage coefficient voltage and the second voltage is a negative voltage coefficient voltage.

[0043] According to another aspect of the present disclosure, an electronic device includes the voltage generating unit as described above, wherein the voltage generating unit forms a reference voltage of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0045] Figure 1 A voltage generating unit according to one embodiment of the present disclosure is shown.

[0046] Figure 2 A schematic diagram of establishing a functional relationship according to an embodiment of the present disclosure is shown.

[0047] Figure 3 A schematic diagram of adjusting voltage through a functional relationship according to an embodiment of the present disclosure is shown.

[0048] Figure 4 A voltage generating unit according to one embodiment of the present disclosure is shown.

[0049] Figure 5 A schematic diagram of an electronic device according to one embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0050] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0051] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0053] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0054] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0055] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0056] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0057] According to one embodiment of the present disclosure, a voltage generating unit is provided, which can provide an accurate reference voltage.

[0058] Figure 1 A voltage generating unit according to one embodiment of the present disclosure is shown.

[0059] like Figure 1 As shown, the voltage generating unit may include a first voltage generating module 110 , a first voltage adjusting module 111 , a first analog-to-digital conversion module 112 , a second voltage generating module 120 , a second voltage adjusting module 121 , a second analog-to-digital conversion module 122 and an adding module 130 .

[0060] The first voltage generating module 110 may be configured to generate a first voltage V1 , and the first voltage V1 is provided to the first voltage adjusting module 111 .

[0061] The first voltage adjustment module 111 is used to adjust the first voltage V1 to generate an adjustment voltage. For example, the first voltage adjustment module 111 can multiply the first voltage V1 by a coefficient M to generate an adjustment voltage M*V1. The first voltage adjustment module 111 obtains the voltage value of the adjustment voltage by adjusting the coefficient M. The adjustment coefficient M can change in a step-like manner.

[0062] The first analog-to-digital conversion module 112 is used to receive the first adjustment voltage and perform analog-to-digital conversion on the first adjustment voltage, thereby providing the converted first digital signal D1 to the first voltage adjustment module 111, and the first voltage adjustment module 111 can adjust the first voltage V1 according to the digital signal D1. For example, when the adjustment is performed using a coefficient M, the coefficient can be adjusted to achieve the purpose of adjusting the first voltage V1.

[0063] The second voltage generating module 120 may be configured to generate a second voltage V2 , and the second voltage V1 is provided to the second voltage adjusting module 121 .

[0064] The second voltage adjustment module 121 is used to adjust the second voltage V2 to generate a second adjustment voltage. For example, the second voltage adjustment module 121 can multiply the second voltage V2 by a coefficient N to generate an adjustment voltage N*V2. The second voltage adjustment module 121 obtains a voltage value of the adjustment voltage by adjusting the coefficient N. The adjustment coefficient N can change in a step-like manner.

[0065] The second analog-to-digital conversion module 122 is used to receive the adjustment voltage and perform analog-to-digital conversion on the adjustment voltage, thereby providing the converted second digital signal D2 to the second voltage adjustment module 121, and the second voltage adjustment module 121 can adjust the second voltage V2 according to the digital signal D2. For example, when the adjustment is performed using a coefficient N, the coefficient can be adjusted to achieve the purpose of adjusting the second voltage V2.

[0066] The adding module 130 can be used to add the first adjustment voltage and the second adjustment voltage to obtain the added voltage V BG The voltage V BG Can be used as a reference voltage.

[0067] In addition, the voltage V BG It is also provided to the first analog-to-digital conversion module 112 and the second analog-to-digital conversion module 122, which can convert the voltage V BG As the benchmark voltage of the first analog-to-digital conversion module 112 and the second analog-to-digital conversion module 122. The first analog-to-digital conversion module 112 generates a first digital signal D1 by comparing the first adjustment voltage with the benchmark voltage, and the second analog-to-digital conversion module 122 generates a second digital signal D2 by comparing the second adjustment voltage with the benchmark voltage.

[0068] The following will take the adjustment coefficients M and N as an example for detailed description. In actual use, as time changes, the first voltage and the second voltage generated by the first voltage generating module 110 and the second voltage generating module 120 will change with the change of external conditions. If the first voltage and / or the second voltage are not adjusted, then the reference voltage V BG Changes will be made.

[0069] The following description will be made by taking the first moment T0 and the second moment T1 as an example, wherein in the present disclosure, the time difference between the first moment T0 and the second moment T1 is preferably in the millisecond level.

[0070] From the first time T0 to the second time T1, the voltage value of the first adjustment voltage at the second time T1 will be M*V 1(T1) =M*(V1(T0) +△V1), where V 1(T1) is the first voltage value at the second moment T1, V 1(T0) is the first voltage value at the first moment T0.

[0071] From the first time T0 to the second time T1, the voltage value of the second adjustment voltage at the second time T1 will be N*V 2(T1) =N*(V 2(T0) +△V2), where V 2(T1) is the second voltage value at the second moment T1, V 2(T0) is the second voltage value at the first moment T0.

[0072] Then the output D1 of the first analog-to-digital conversion module 112 = M*V 1(T1) / V BG(T1) =M*V 1(T0) / V BG(T1) +M*△V1 / V BG(T1) . Where V BG(T1) It can be the output of the adding module 130 at the second time T1. BG(T1) It can also be replaced by other reference voltages, for example, a constant voltage can be used as the reference voltage. In addition, the output of the adding module at other moments such as the first moment can also be used as the reference voltage. Then the output D2 of the second analog-to-digital conversion module 122 = N*V 2(T1) / V BG(T1) =N*V 2(T0) / V BG(T1) +N*△V2 / V BG(T1) . Where V BG(T1) It can be the output of the adding module 130 at the second time T1. BG(T1) It can also be replaced by other reference voltages, for example, a constant voltage can be used as the reference voltage. In addition, the output of the adding module at other moments such as the first moment can also be used as the reference voltage.

[0073] according to Figure 1 In the embodiment, the first voltage can be adjusted by the detection value of the first adjustment voltage. After the voltage generating unit works, for example, after it works stably, it is expected that the voltage value outputted by it is a stable reference voltage value. Continuing to take two moments as an example, at the first moment T0 and the second moment T1, the first adjustment voltage at the first moment is V 1(T0) , the first adjustment voltage at the second moment is V 1(T1) When the second moment is reached, the digital signal D1 of the first analog-to-digital conversion module 112 indicates that the first adjustment voltage at the second moment is V 1(T1)When the third moment T2 is reached, the first voltage adjustment module 111 generates the first adjustment voltage at the third moment as V 1(T2) , compare the first adjustment voltage V 1(T2) and the first adjustment voltage is V 1(T1) If there is a difference between the two, the first voltage adjustment module is used to avoid changes in the first adjustment voltage.

[0074] The second voltage can also be adjusted by the detection value of the second adjustment voltage. After the voltage generating unit works, for example, after it works stably, it is expected that the voltage value outputted by it is a stable reference voltage value. Continuing to take two moments as an example, at the first moment T0 and the second moment T1, the second adjustment voltage at the first moment is V 2(T0) , the second adjustment voltage at the second moment is V 2(T1) When the second moment is reached, the digital signal D1 of the second analog-to-digital conversion module 122 indicates that the second adjustment voltage at the second moment is V 2(T1) When the third moment T2 is reached, the second voltage adjustment module 121 generates the second adjustment voltage V 2(T2) , compare the first adjustment voltage V 2(T2) and the second adjustment voltage is V 2(T1) If there is a difference between the two, the first voltage adjustment module is used to avoid changes in the second adjustment voltage.

[0075] In addition, adjustments can be made based on establishing a functional relationship between external conditions and voltage changes.

[0076] Figure 2 A schematic diagram of establishing a functional relationship according to an embodiment of the present disclosure is shown.

[0077] like Figure 2 As shown, it may include a first voltage generating module 210 , a first analog-to-digital conversion module 211 , a second voltage generating module 220 , a second analog-to-digital conversion module 221 and a function establishing module 230 .

[0078] The first voltage generating module 210 may be configured to generate a first voltage V1 , and the first voltage V1 is provided to the first analog-to-digital conversion module 211 .

[0079] The first analog-to-digital conversion module 211 is used to receive a first voltage and perform analog-to-digital conversion on the first voltage, thereby providing the converted first digital signal D1 to the function establishment module 230 .

[0080] The second voltage generating module 120 may be configured to generate a second voltage V2 , and the second voltage V1 is provided to the second analog-to-digital conversion module 221 .

[0081] The second analog-to-digital conversion module 122 is used to receive the second voltage and perform analog-to-digital conversion on the second voltage, thereby providing the converted second digital signal D2 to the function establishment module 230 .

[0082] By changing the external conditions, for example, during the test phase, the functional relationship between the external conditions and the first voltage and the second voltage is obtained. The external conditions may be various parameters such as temperature, voltage, current, etc. The following is explained using temperature as an example. The voltage values ​​corresponding to the first voltage V1 and the second voltage V2 may be measured under different temperature conditions, so that the functional relationship between the temperature and the first voltage and the functional relationship between the temperature and the second voltage may be fitted.

[0083] Figure 3 A schematic diagram of adjusting voltage through a functional relationship according to an embodiment of the present disclosure is shown.

[0084] When passing Figure 2 After the functional relationship is established in the embodiment shown, the functional relationship can be used in the use of the voltage generating unit. Figure 2 and Figure 3 can be combined together, that is, the first voltage generating module and the second voltage generating module are Figure 2 and Figure 3 can be the same.

[0085] like Figure 3 As shown, the voltage generating unit may include a first voltage generating module 210 , a first voltage adjusting module 212 , a second voltage generating module 220 , a second voltage adjusting module 222 , an adding module, a control module 250 and a detection module 260 .

[0086] The first voltage generating module 210 may be configured to generate a first voltage V1 , and the first voltage V1 is provided to the first voltage adjusting module 212 .

[0087] The first voltage adjustment module 212 is used to adjust the first voltage V1 to generate an adjustment voltage. For example, the first voltage adjustment module 111 may multiply the first voltage V1 by a coefficient M to generate an adjustment voltage M*V1. The first voltage adjustment module 111 obtains the voltage value of the adjustment voltage by adjusting the coefficient M. The adjustment coefficient M may change in a step-like manner.

[0088] The second voltage generating module 220 may be configured to generate a second voltage V2 , and the second voltage V1 is provided to the second voltage adjusting module 222 .

[0089] The second voltage adjustment module 222 is used to adjust the second voltage V2 to generate a second adjustment voltage. For example, the second voltage adjustment module 222 can multiply the second voltage V2 by a coefficient N to generate an adjustment voltage N*V2. The second voltage adjustment module 222 obtains the voltage value of the adjustment voltage by adjusting the coefficient N. The adjustment coefficient N can change in a step-like manner.

[0090] The adding module 240 can receive the first adjustment voltage and the second adjustment voltage, and add the first adjustment voltage and the second adjustment voltage to obtain a reference voltage V BG .

[0091] The detection module 260 can detect external conditions. For example, if the external condition is temperature, the detection module 260 can be a temperature sensor, which can detect the temperature in real time. The control module 250 can obtain the temperature detected by the temperature sensor and obtain the corresponding expected voltage value according to the detected temperature and the previously established functional relationship. The control module 250 can control the first voltage adjustment module 212 and the second voltage adjustment module 222 to adjust the first adjustment voltage and the second adjustment voltage according to the expected voltage value. In this way, the reference voltage V BG Affected by external conditions.

[0092] Figure 4 A voltage generating unit according to one embodiment of the present disclosure is shown.

[0093] like Figure 4 As shown, the voltage generating unit may include a first voltage generating module 410 , a first voltage adjusting module 411 , a first analog-to-digital conversion module 412 , a second voltage generating module 420 , a second voltage adjusting module 421 , a second analog-to-digital conversion module 422 and an adding module 430 .

[0094] The first voltage generating module 410 may be configured to generate a first voltage V1 , and the first voltage V1 is provided to the first voltage adjusting module 411 .

[0095] The first voltage adjustment module 411 is used to adjust the first voltage V1 to generate an adjustment voltage. For example, the first voltage adjustment module 411 can multiply the first voltage V1 by a coefficient M to generate an adjustment voltage M*V1. The first voltage adjustment module 411 obtains the voltage value of the adjustment voltage by adjusting the coefficient M. The adjustment coefficient M can change in a step-like manner.

[0096] The first analog-to-digital conversion module 412 is used to receive the first adjustment voltage and perform analog-to-digital conversion on the first adjustment voltage, thereby providing the converted first digital signal D1 to the first voltage adjustment module 411, and the first voltage adjustment module 411 can adjust the first voltage V1 according to the digital signal D1. For example, when the adjustment is performed using a coefficient M, the coefficient can be adjusted to achieve the purpose of adjusting the first voltage V1.

[0097] The second voltage generating module 420 may be configured to generate a second voltage V2 , and the second voltage V1 is provided to the second voltage adjusting module 421 .

[0098] The second voltage adjustment module 421 is used to adjust the second voltage V2 to generate a second adjustment voltage. For example, the second voltage adjustment module 421 can multiply the second voltage V2 by a coefficient N to generate an adjustment voltage N*V2. The second voltage adjustment module 421 obtains the voltage value of the adjustment voltage by adjusting the coefficient N. The adjustment coefficient N can change in a step-like manner.

[0099] The second analog-to-digital conversion module 422 is used to receive the adjustment voltage and perform analog-to-digital conversion on the adjustment voltage, thereby providing the converted second digital signal D2 to the second voltage adjustment module 421, and the second voltage adjustment module 421 can adjust the second voltage V2 according to the digital signal D2. For example, when the adjustment is performed using a coefficient N, the coefficient can be adjusted to achieve the purpose of adjusting the second voltage V2.

[0100] The adding module 430 can be used to add the first adjustment voltage and the second adjustment voltage to obtain the added voltage V BG The voltage V BG Can be used as a reference voltage.

[0101] In addition, the voltage V BG It is also provided to the first analog-to-digital conversion module 412 and the second analog-to-digital conversion module 422, which can convert the voltage V BG As the benchmark voltage of the first analog-to-digital conversion module 412 and the second analog-to-digital conversion module 422. The first analog-to-digital conversion module 412 generates a first digital signal D1 by comparing the first adjustment voltage with the benchmark voltage, and the second analog-to-digital conversion module 422 generates a second digital signal D2 by comparing the second adjustment voltage with the benchmark voltage.

[0102] The following will take the adjustment coefficients M and N as an example for detailed description. In actual use, as time changes, the first voltage and the second voltage generated by the first voltage generating module 410 and the second voltage generating module 420 will change with the change of external conditions. If the first voltage and / or the second voltage are not adjusted, then the reference voltage V BG Changes will be made.

[0103] The following description will be made by taking the first moment T0 and the second moment T1 as an example, wherein in the present disclosure, the time difference between the first moment T0 and the second moment T1 is preferably in the millisecond level.

[0104] From the first time T0 to the second time T1, the voltage value of the first adjustment voltage at the second time T1 will be M*V 1(T1) =M*(V 1(T0) +△V1), where V 1(T1) is the first voltage value at the second moment T1, V 1(T0) is the first voltage value at the first moment T0.

[0105] From the first time T0 to the second time T1, the voltage value of the second adjustment voltage at the second time T1 will be N*V 2(T1) =N*(V 2(T0) +△V2), where V 2(T1) is the second voltage value at the second moment T1, V 2(T0) is the second voltage value at the first moment T0.

[0106] Then the output D1 of the first analog-to-digital conversion module 412 = M*V 1(T1) / V BG(T1) =M*V 1(T0) / V BG(T1) +M*△V1 / V BG(T1) . Where V BG(T1) It can be the output of the adding module 430 at the second time T1. BG(T1) It can also be replaced by other reference voltages, for example, a constant voltage can be used as the reference voltage. In addition, the output of the adding module at other moments such as the first moment can also be used as the reference voltage. Then the output D2 of the second analog-to-digital conversion module 422 = N*V 2(T1) / V BG(T1) =N*V 2(T0) / V BG(T1) +N*△V2 / V BG(T1) . Where V BG(T1) It can be the output of the adding module 430 at the second time T1. BG(T1) It can also be replaced by other reference voltages, for example, a constant voltage can be used as the reference voltage. In addition, the output of the adding module at other moments such as the first moment can also be used as the reference voltage.

[0107] So △D1≈M*△V1 / V BG(T1) ≈M*V 1(T0) / V BG(T1) +M*△V1 / V BG(T1) —M*V 1(T0) / VBG(T0) ; △D2≈N*△V2 / V BG(T1) ≈N*V 2(T0) / V BG(T1) +N*△V2 / V BG(T1) —N*V 2(T0) / V BG(T0) .

[0108] Assuming that there is little change after compensation, since V BG(T1) ≈V BG(T0) , so M*V 1(T0) / V BG(T1) —M*V 1(T0) / V BG(T0) =0, N*V 2(T0) / V BG(T1) —N*V 2(T0) / V BG(T0) =0.

[0109] So △D1≈M*△V1 / V BG(T1) , △D2≈N*△V2 / V BG(T1) .

[0110] In order to make V BG(T1) =V BG(T0) , then set |△D1|=|△D2|, that is: |M*△V1 / V BG(T1) |=|N*△V2 / V BG(T1) |.

[0111] If |M*△V1 / V BG(T1) |>|N*△V2 / V BG(T1) |, then reduce the first coefficient M and / or increase the second coefficient N until |M*△V1 / V BG(T1) |=|N*△V2 / V BG(T1) |.

[0112] If |M*△V1 / V BG(T1) |<|N*△V2 / V BG(T1) |, then increase the first coefficient M and / or decrease the second coefficient N until |M*△V1 / V BG(T1) |=|N*△V2 / V BG(T1) |.

[0113] In the above embodiment, the reference voltage is generated by comparing two adjustment voltages. The comparison can be performed by the control module 440 or by a comparison module.

[0114] Although described in the above description in the form of a voltage adjustment module, the first voltage adjustment module and the second voltage adjustment module can be two modules respectively. For example, in the case of a parameter adjustment method, the two modules are a coefficient adjustment module and a multiplication module. The coefficient is adjusted in the coefficient adjustment module, and the adjusted coefficient is multiplied with the first / second voltage in the multiplication module to obtain a corresponding adjusted voltage.

[0115] In the present disclosure, the external condition may be temperature, voltage, and / or current, etc. For example, when the external condition changes to temperature, the first voltage generating module may be a negative temperature coefficient voltage generating module, and the first voltage V1 may be a negative temperature coefficient voltage V be The negative temperature coefficient voltage can be the base-emitter voltage of an NPN transistor, the base-emitter voltage of a PNP transistor, or the PN junction voltage of a diode. It can also be the gate-source voltage of a MOSFET. GS voltage or the threshold voltage V of the MOSFET TH .

[0116] The second voltage generating module may be a positive temperature coefficient voltage generating module, and the second voltage V2 may be a positive temperature coefficient voltage V PTAT The positive temperature coefficient voltage is a PTAT voltage (Proportional To Absolute Temperature voltage) that increases with increasing temperature. The PTAT voltage can be realized by a PTAT voltage generation circuit. In other words, the negative temperature coefficient voltage refers to a voltage that decreases with increasing temperature, and the positive temperature coefficient voltage refers to a voltage that increases with increasing temperature.

[0117] In addition, when the first voltage generating module and the second voltage generating module generate voltage, they are bound to be connected to an external voltage source or current source. The different values ​​provided by the external voltage source or current source will also cause fluctuations in the voltages generated by the first voltage generating module and the second voltage generating module. Therefore, the above-mentioned method according to the present disclosure can also eliminate such fluctuations.

[0118] Compared with the method of generating voltage by hardware, the embodiment according to the present disclosure is more effective and more accurate. At the same time, it can not only eliminate the influence of the first-order change of the first voltage and the second voltage, but also eliminate the influence of the higher-order change.

[0119] According to another embodiment of the present disclosure, Figure 5 As shown, an electronic device is provided, wherein the electronic device may include the above-mentioned voltage generating unit, and the reference voltage generated by the above-mentioned voltage generating unit can power other components in the electronic device.

[0120] 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 do not necessarily refer to 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.

[0121] 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.

[0122] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. 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 disclosure.

Claims

1. A voltage generating unit, characterized in that: include: A first voltage generating module, used to generate a first voltage; A second voltage generating module, used for generating a second voltage; a first voltage adjustment module, the first voltage adjustment module being configured to receive the first voltage and adjust the first voltage to output a first adjusted voltage; a second voltage adjustment module, the second voltage adjustment module being used for receiving the second voltage and adjusting the second voltage to output a second adjusted voltage, the second voltage adjustment module comprising a second coefficient adjustment module and a second multiplication module; a control module, wherein the control module receives the first adjustment voltage and the second adjustment voltage, and controls the first voltage adjustment module and / or the second voltage adjustment module to adjust the first voltage and / or the second voltage based on relevant information of the first adjustment voltage and / or relevant information of the second adjustment voltage; an adding module, the adding module receiving the first adjustment voltage and the second adjustment voltage and generating a third voltage; a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first adjustment voltage, perform analog-to-digital conversion on the first adjustment voltage, and provide a converted first digital signal to the control module; as well as a second analog-to-digital conversion module, the second analog-to-digital conversion module is used to collect the second adjustment voltage, perform analog-to-digital conversion on the second adjustment voltage, and provide the converted second digital signal to the control module, The first voltage adjustment module includes a first coefficient adjustment module and a first multiplication module, the control module controls the adjustment of the first coefficient, and the first multiplication module multiplies the adjusted first coefficient by the first voltage to obtain the first adjustment voltage, the control module controls the adjustment of the second coefficient, and the second multiplication module multiplies the adjusted second coefficient by the second voltage to obtain the second adjustment voltage, The control module controls the first voltage adjustment module to adjust the first voltage according to the difference between the first adjustment voltage at the second moment and the first voltage at the first moment; or the control module controls the second voltage adjustment module to adjust the second voltage according to the difference between the second adjustment voltage at the second moment and the second voltage at the first moment, wherein the second moment is a moment after the first moment.

2. The voltage generating unit according to claim 1, wherein: The first analog-to-digital conversion module and the second analog-to-digital conversion module use the third voltage as a reference voltage to convert the first adjustment voltage into a first digital signal and convert the second adjustment voltage into a second digital signal.

3. The voltage generating unit according to claim 1, wherein: The control module performs control based on making the difference between the first adjusted voltage at the second moment and the first voltage at the first moment equal to zero, or the control module performs control based on making the difference between the second adjusted voltage at the second moment and the second voltage at the first moment equal to zero.

4. The voltage generating unit according to claim 1, wherein: The first analog-to-digital conversion module receives a first adjustment voltage at a first moment and a first adjustment voltage at a second moment, obtains a first voltage change value according to the first adjustment voltage at the first moment and the first adjustment voltage at the second moment, and The second analog-to-digital conversion module receives the second adjustment voltage at a first moment and the second adjustment voltage at a second moment, and obtains a second voltage change value according to the second adjustment voltage at the first moment and the second adjustment voltage at the second moment.

5. The voltage generating unit according to claim 4, characterized in that: The control module adjusts the first adjustment voltage and / or the second adjustment voltage according to a comparison result between the first voltage change value and the second voltage change value.

6. The voltage generating unit according to claim 5, characterized in that: The control module adjusts the first voltage and / or the second voltage based on the standard that the difference between the first voltage change value and the second voltage change value is equal to zero.

7. The voltage generating unit according to claim 5, characterized in that: When the change value of the first voltage is greater than the change value of the second voltage, the first adjustment voltage is increased and / or the second adjustment voltage is decreased.

8. The voltage generating unit according to claim 1, wherein: The control module adjusts the first voltage to obtain the first adjusted voltage based on a first functional relationship between an external condition and the first voltage generated by the first voltage generating module, and / or the control module adjusts the first voltage to obtain the first adjusted voltage based on a second functional relationship between an external condition and the second voltage generated by the second voltage generating module.

9. The voltage generating unit according to claim 8, characterized in that: The voltage generating unit further includes a detection module, which is used to detect the external condition so as to obtain the first adjustment voltage according to the detected external condition and the first functional relationship, and / or to obtain the second adjustment voltage according to the detected external condition and the second functional relationship.

10. The voltage generating unit according to claim 9, characterized in that: Also includes: a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first adjustment voltage, perform analog-to-digital conversion on the first adjustment voltage, and provide a converted first digital signal to the control module; as well as A second analog-to-digital conversion module is used to collect the second adjustment voltage, perform analog-to-digital conversion on the second adjustment voltage, and provide the converted first digital signal to the control module.

11. The voltage generating unit according to claim 10, characterized in that: The first analog-to-digital conversion module and the second analog-to-digital conversion module use the third voltage as a reference voltage to convert the first adjustment voltage into a first digital signal and convert the second adjustment voltage into a second digital signal.

12. The voltage generating unit according to claim 9, wherein: It also includes a function establishment module, which obtains the functional relationship between the external condition and the first voltage and the functional relationship between the external condition and the second voltage by obtaining changes in the first voltage and the second voltage under different external conditions.

13. The voltage generating unit according to claim 12, wherein: Also includes: a first analog-to-digital conversion module, the first analog-to-digital conversion module being used to collect the first voltage, perform analog-to-digital conversion on the first voltage, and provide the converted first digital signal to the function establishment module; as well as A second analog-to-digital conversion module is used to collect the second voltage, perform analog-to-digital conversion on the second voltage, and provide the converted first digital signal to the function establishment module.

14. The voltage generating unit according to claim 13, wherein: The first analog-to-digital conversion module and the second analog-to-digital conversion module are provided with a reference voltage so as to convert the first voltage and the second voltage into the first digital signal and the second digital signal respectively according to the reference voltage.

15. The voltage generating unit according to any one of claims 1 to 14, characterized in that: The first voltage generated by the first voltage generating module and the second voltage generated by the second voltage generating module are voltages that vary with external conditions.

16. The voltage generating unit according to claim 15, characterized in that: The external conditions are temperature, current and / or voltage.

17. The voltage generating unit according to claim 16, wherein: The first voltage is a positive temperature coefficient voltage and the second voltage is a negative temperature coefficient voltage, or The first voltage is a positive current coefficient voltage and the second voltage is a negative current coefficient voltage, or The first voltage is a positive voltage coefficient voltage and the second voltage is a negative voltage coefficient voltage.

18. An electronic device, characterized in that: The device comprises a voltage generating unit as claimed in any one of claims 1 to 17, wherein the voltage generating unit forms a reference voltage of the electronic device.

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