Control circuit, control chip, power supply chip and electronic device

Abstract

The present disclosure relates to a control circuit, a control chip, a power supply chip and an electronic device. The control circuit comprises: a plurality of modulation circuits, the input end of each modulation circuit is electrically connected with the output end of a voltage conversion circuit, the modulation circuit is used for generating a modulation signal according to the output voltage of the voltage conversion circuit, and the power consumption of different modulation circuits is different; a selection circuit, the selection circuit is electrically connected with the plurality of modulation circuits, and is used for receiving a control instruction, the selection circuit is used for selecting the modulation signal output by the corresponding modulation circuit according to the control instruction, and the control instruction is generated based on the running state of the electronic device; and a driving circuit, the driving circuit is electrically connected with the selection circuit, and is used for being electrically connected with the control end of the voltage conversion circuit, the driving circuit is used for generating a driving signal according to the modulation signal selected by the selection circuit, and outputting the driving signal to the voltage conversion circuit. In the present disclosure, the energy efficiency loss is reduced, and the endurance of the electronic device is increased.

Description

Technical Field

[0001] This disclosure relates to the field of power supply technology, and in particular to a control circuit, control chip, power chip, and electronic device. Background Technology

[0002] Voltage-mode modulation (VMM) circuits are typically used to generate the modulation signals for driving voltage conversion circuits, as they offer strong adaptability to the simultaneous operation of multi-phase voltage conversion circuits. However, VMM circuits consume a significant amount of power, resulting in substantial energy efficiency losses and impacting the battery life of electronic devices. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a control circuit, a control chip, a power supply chip, and an electronic device.

[0004] According to a first aspect of the present disclosure, a control circuit is provided, the control circuit comprising: Multiple modulation circuits are provided, each of which has an input terminal that is electrically connected to the output terminal of a voltage conversion circuit. The modulation circuits generate a modulation signal based on the output voltage of the voltage conversion circuit. The power consumption of different modulation circuits varies. The selection circuit is electrically connected to multiple modulation circuits and is used to receive control commands. The selection circuit is used to select the modulation signal output by the corresponding modulation circuit according to the control commands. The control commands are generated based on the operating state of the electronic device. A driving circuit is electrically connected to the selection circuit and is also electrically connected to the control terminal of the voltage conversion circuit. The driving circuit generates a driving signal based on the modulation signal selected by the selection circuit and outputs the driving signal to the voltage conversion circuit.

[0005] In this embodiment, modulation circuits with different power consumption are selected to generate modulation signals based on different operating states of the electronic device. Compared with using voltage-mode modulation circuits in any operating state of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0006] In some exemplary embodiments of this disclosure, the selection circuit includes: A signal generation circuit, wherein the input terminal of the signal generation circuit is used to receive the control command, and the signal generation circuit is used to generate a control signal according to the control command; A first switching circuit, wherein each input terminal of the first switching circuit is electrically connected to the output terminal of a modulation circuit, the output terminal of the first switching circuit is electrically connected to the input terminal of the driving circuit, and the control terminal of the first switching circuit is electrically connected to the output terminal of the signal generation circuit. A second switching circuit is electrically connected between the power supply terminal of at least a portion of the modulation circuit and the corresponding power supply, and the control terminal of the second switching circuit is electrically connected to the output terminal of the signal generation circuit.

[0007] In this embodiment, while selecting the desired modulation signal, energy efficiency loss caused by the static power consumption of the high-power modulation circuit can be prevented.

[0008] In some exemplary embodiments of this disclosure, the first switching circuit includes: A multiplexer, wherein each input terminal of the multiplexer is electrically connected to the output terminal of one of the modulation circuits, the output terminal of the multiplexer is electrically connected to the input terminal of the driving circuit, and the control terminal of the multiplexer is electrically connected to the output terminal of the signal generation circuit.

[0009] In this embodiment, by using a multiplexer, it is not necessary to set up separate lines and switching devices for each modulation signal, which solves the problem of difficult wiring and avoids waste of resources.

[0010] In some exemplary embodiments of this disclosure, the plurality of modulation circuits include: A first comparator circuit, wherein a first input terminal of the first comparator circuit is electrically connected to the output terminal of the voltage conversion circuit, a second input terminal of the first comparator circuit is used to receive a reference voltage, and the output terminal of the first comparator circuit is electrically connected to the first input terminal of the selection circuit. The second comparator circuit has a first input terminal that is electrically connected to the output terminal of the voltage conversion circuit, a second input terminal that is used to receive the reference voltage, and an output terminal that is electrically connected to the second input terminal of the selection circuit. The power consumption of the first comparison circuit is less than that of the second comparison circuit.

[0011] In this embodiment, the multiple modulation circuits include a first comparison circuit and a second comparison circuit with different power consumption. The corresponding comparison circuit can be selected as the modulation circuit according to the operating state of the electronic device. Compared with using a modulation circuit with high power consumption in any operating state of the electronic device, the energy efficiency loss is reduced.

[0012] In some exemplary embodiments of this disclosure, the first comparison circuit includes: A first comparator has a first input terminal electrically connected to the output terminal of the voltage conversion circuit, a second input terminal of the first comparator for receiving the reference voltage, and an output terminal electrically connected to the first input terminal of the selection circuit.

[0013] In this embodiment, the first comparator is used as the modulation circuit, which consumes less power and reduces energy loss.

[0014] In some exemplary embodiments of this disclosure, the second comparison circuit includes: A differential amplifier, wherein the first input terminal of the differential amplifier is electrically connected to the output terminal of the voltage conversion circuit, the second input terminal of the differential amplifier is used to receive the reference voltage, and the power supply terminal of the differential amplifier is electrically connected to the corresponding power supply through the first terminal of the second switching circuit; The second comparator has its first input terminal electrically connected to the output terminal of the differential amplifier, its second input terminal used to receive a carrier signal, its power supply terminal electrically connected to the corresponding power supply through the second terminal of the second switching circuit, and its output terminal electrically connected to the second input terminal of the selection circuit. A compensation circuit is provided, wherein the first end of the compensation circuit is electrically connected to the output end of the differential amplifier, and the second end of the compensation circuit is electrically connected to the ground terminal.

[0015] In this embodiment, a second comparator circuit, including a differential amplifier, a second comparator, and a compensation circuit, is used as the modulation circuit. The output modulation signal has a fixed frequency, which can be adapted to the scenario of multiphase voltage conversion circuit working together.

[0016] In some exemplary embodiments of this disclosure, the second switching circuit includes: The first switching unit is electrically connected between the power supply terminal of the differential amplifier and the corresponding power supply, and the control terminal of the first switching unit is electrically connected to the output terminal of the signal generation circuit. The second switching unit is electrically connected between the power supply terminal of the second comparator and the corresponding power supply, and the control terminal of the second switching unit is electrically connected to the output terminal of the signal generation circuit.

[0017] In this embodiment, by disconnecting the first switching unit and the second switching unit, energy efficiency loss caused by the static power consumption of the second comparison circuit can be prevented.

[0018] In some exemplary embodiments of this disclosure, when the operating state is the first state, the selection circuit selects the comparison signal output by the first comparison circuit and controls the second comparison circuit to be powered off. When the operating state is the second state, the selection circuit selects the comparison signal output by the second comparison circuit; The power consumption of the electronic device in the first state is less than the power consumption in the second state.

[0019] In this embodiment, selecting a comparator circuit with lower power consumption during low-power operation can reduce energy consumption. At the same time, disconnecting the power supply to the unselected comparator circuit can further avoid energy loss.

[0020] In some exemplary embodiments of this disclosure, the selection circuit is further configured to control the selected modulation circuit to be powered on, and the unselected modulation circuit to be powered off.

[0021] In this embodiment, only the selected modulation circuit is powered on, which can avoid energy loss.

[0022] In some exemplary embodiments of this disclosure, the control circuit further includes: A voltage sampling circuit is electrically connected between the output terminal of the voltage conversion circuit and the input terminals of each of the modulation circuits, and the voltage sampling circuit is used to sample the output voltage. The modulation circuit is used to generate the modulation signal based on the sampled output voltage.

[0023] In this embodiment, because the output voltage of the voltage conversion circuit is much higher than the withstand voltage of the modulation circuit, the voltage value of the sampled output voltage is reduced by the voltage sampling circuit, so that it can be adapted to the working voltage of the modulation circuit, thus avoiding damage to the modulation circuit by directly using the output voltage.

[0024] In some exemplary embodiments of this disclosure, different operating states correspond to different operating scenarios of the electronic device.

[0025] In this embodiment, different operating states correspond to different operating scenarios of electronic devices. The optimal modulation circuit can be selected according to the actual operating conditions of the electronic device to avoid energy waste.

[0026] In some exemplary embodiments of this disclosure, the operating scenario includes a first scenario and a second scenario, wherein the power consumption of the electronic device in the second scenario is less than the power consumption of the electronic device in the first scenario; and the power consumption of the modulation circuit selected by the selection circuit in the second scenario is less than the power consumption of the modulation circuit selected in the first scenario.

[0027] In this embodiment, selecting a modulation circuit with lower power consumption in low-power operation scenarios of electronic devices can reduce the energy efficiency loss caused by the modulation circuit in low-power operation scenarios.

[0028] According to a second aspect of the present disclosure, a control chip is provided, the control chip including the control circuit described in the first aspect of the present disclosure.

[0029] According to a third aspect of the present disclosure, a power supply chip is provided, the power supply chip including a control circuit as described in the first aspect of the present disclosure, or a control chip as described in the second aspect of the present disclosure.

[0030] In some exemplary embodiments of this disclosure, the power chip further includes: A voltage conversion circuit is electrically connected to the control circuit, and the drive signal generated by the control circuit is used to drive the switch of the voltage conversion circuit to turn on or off.

[0031] According to a fourth aspect of the present disclosure, an electronic device is provided, the electronic device including a control chip as described in the second aspect of the present disclosure, or a power chip as described in the third aspect of the present disclosure; The electronic device also includes a system-on-a-chip (SoC) for generating and sending the control commands to the driver chip or power chip.

[0032] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: In this disclosure, modulation circuits with different power consumption are selected to generate modulation signals based on different operating states of the electronic device. Compared with using voltage-mode modulation circuits in all operating states of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0033] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0035] Figure 1 This is a schematic diagram of a control circuit according to an exemplary embodiment.

[0036] Figure 2 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0037] Figure 3This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0038] Figure 4 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0039] Figure 5 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0040] Figure 6 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0041] Figure 7 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0042] Figure 8 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0043] Figure 9 This is a schematic diagram of a control circuit according to another exemplary embodiment.

[0044] Figure 10 This is a block diagram of an electronic device according to an exemplary embodiment.

[0045] In the picture: 1-Modulation circuit; 2-Selection circuit; 3-Drive circuit; 4-Voltage conversion circuit; 5-Voltage sampling circuit; 11-First comparator circuit; 12-Second comparator circuit; 21-Signal generation circuit; 22-First switch circuit; 23-Second switch circuit; 231-First switch unit; 232-Second switch unit; 233-Third switch unit; AMP-Differential amplifier; C-Capacitor; CTRL-Control command; CMP1-First comparator; CMP2-Second comparator; GND-Ground terminal; LC-Compensation circuit; MUX-Multiplexer; R1-First resistor; R2- Second resistor; R3 - Third resistor; S1 - Modulation signal; S2 - Drive signal; S3 - Control signal; S4 - Carrier signal; S5 - Error signal; SOC - System-on-a-Chip; VDD - Power supply; VFB - Sampling output voltage; VOUT - Output voltage; VREF - Reference voltage; 1000 - Electronic device; 1002 - Processing component; 1004 - Memory; 1006 - Power supply component; 1008 - Multimedia component; 1010 - Audio component; 1012 - Input / output interface; 1014 - Sensor component; 1016 - Communication component; 1020 - Processor. Detailed Implementation

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0047] Voltage-mode modulation (VMM) circuits are typically used to generate the modulation signals for driving voltage conversion circuits, as they offer strong adaptability to the simultaneous operation of multi-phase voltage conversion circuits. However, VMM circuits consume a significant amount of power, resulting in substantial energy efficiency losses and impacting the battery life of electronic devices.

[0048] To address the aforementioned issues, this disclosure provides a control circuit that selects modulation circuits with different power consumption to generate modulation signals based on different operating states of the electronic device. Compared to using voltage-mode modulation circuits in all operating states of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0049] In some exemplary embodiments, a control circuit is provided, such as Figure 1 As shown, the control circuit includes multiple modulation circuits 1, a selection circuit 2, and a drive circuit 3. The input terminal of each modulation circuit 1 is electrically connected to the output terminal of the voltage conversion circuit 4. The modulation circuit 1 generates a modulation signal S1 based on the output voltage VOUT of the voltage conversion circuit 4. Different modulation circuits 1 have different power consumption and performance. The selection circuit 2 is electrically connected to all modulation circuits 1 and receives the control command CTRL. The selection circuit 2 selects the corresponding modulation signal S1 output by the modulation circuit 1 based on the control command CTRL. The control command CTRL is generated based on the operating state of the electronic device. The drive circuit 3 is electrically connected to the selection circuit 2 and is also electrically connected to the control terminal of the voltage conversion circuit 4. The drive circuit 3 generates a drive signal S2 based on the modulation signal S1 selected by the selection circuit 2 and outputs the drive signal S2 to the voltage conversion circuit 4.

[0050] In some examples, multiple modulation circuits 1 may include voltage-mode modulation circuits. The voltage-mode modulation circuit can be used to compare the output voltage VOUT of the voltage conversion circuit 4 with a reference voltage, amplify the difference between the two to generate an error signal, and compare this error signal with a carrier signal of a fixed frequency (e.g., a sawtooth wave or a triangular wave) to obtain the modulation signal S1. The frequency of the modulation signal S1 output by the voltage-mode modulation circuit can be fixed or variable, and it has the same frequency as the carrier signal. Voltage-mode modulation circuits have relatively high power consumption. The reference voltage can be generated by a reference voltage generation circuit of the power supply chip of the electronic device, and the reference voltage can be used to characterize the voltage value to which the output voltage VOUT needs to be modulated. The carrier signal can be generated by a carrier signal generation circuit of the power supply chip of the electronic device, and the carrier signal can be used to define the frequency of the modulation signal S1.

[0051] In other examples, multiple modulation circuits 1 may include hysteresis-mode modulation circuits. The hysteresis-mode modulation circuit can be configured with upper and lower threshold values ​​symmetrically distributed along a reference voltage. When the output voltage VOUT drops below the lower threshold or rises above the upper threshold, the output value of the hysteresis-mode modulation circuit flips, thereby generating a modulation signal S1. The frequency of the modulation signal S1 output by the hysteresis-mode modulation circuit is not fixed, resulting in lower adaptability to simultaneous operation of the multiphase voltage conversion circuit 4. However, compared to voltage-mode modulation circuits, the hysteresis-mode modulation circuit consumes less power.

[0052] In some examples, the modulation signal S1 can be a pulse width modulation (PWM) signal.

[0053] In some examples, when the electronic device is operating in a high-power or normal-power state, the multiphase voltage conversion circuit 4 ( Figure 1 Only one phase is shown in the diagram. Each phase voltage conversion circuit 4 has its corresponding control circuit, which can be in operation simultaneously. The modulation signal S1 generated by the voltage-mode modulation circuit can be selected according to the control command CTRL. The frequency of the modulation signal S1 for each phase is the same and fixed, which can be adapted to the coordinated operation of multiple phase voltage conversion circuits 4. In other examples, when the electronic device is operating in a low-power mode, only one phase voltage conversion circuit 4 may be in operation because the coordinated operation of multiple phase voltage conversion circuits 4 is not required. The modulation signal S1 generated by the hysteresis modulation circuit can be selected according to the control command CTRL. The frequency of the modulation signal S1 output by the hysteresis modulation circuit is not fixed and will not affect the normal power supply of the load by the voltage conversion circuit 4.

[0054] In some examples, modulation circuit 1 uses the entire output voltage VOUT to generate modulation signal S1. In other examples, modulation circuit 1 uses a portion of the output voltage VOUT to generate modulation signal S1, for example, by using a voltage divider circuit to take a portion of the output voltage VOUT to generate modulation signal S1.

[0055] In some examples, selection circuit 2 may include a multiplexer (MUX) and a switching unit electrically connected between the high-power modulation circuit 1 and its corresponding power supply. Each input of the multiplexer is electrically connected to the output of one of the modulation circuits 1. Different modulation signals S1 can be selected by controlling the connection between the output of the multiplexer and different inputs using the control command CTRL. When the modulation signal S1 output by the high-power modulation circuit 1 (e.g., a voltage-mode modulation circuit) is not selected, the connection between the modulation circuit 1 and its corresponding power supply can be disconnected by the corresponding switching unit of selection circuit 2, preventing energy loss due to the static power consumption of the modulation circuit 1 and thus increasing the battery life of the electronic device. For low-power modulation circuit 1 (e.g., a hysteresis-mode modulation circuit), since the static power consumption of the modulation circuit 1 is negligible, a switching unit is not set between the power supply of the modulation circuit 1 and its corresponding power supply. Even if the modulation signal S1 output by the modulation circuit 1 is not selected, the connection between the modulation circuit 1 and its corresponding power supply is not disconnected, which reduces the complexity of the control circuit and saves hardware costs.

[0056] In some examples, the drive circuit 3 is used to perform signal shaping and power amplification on the modulation signal S1 selected by the selection circuit 2 to generate the drive signal S2.

[0057] In some examples, the voltage conversion circuit 4 can be a buck circuit, a boost circuit, or a buck-boost circuit. The voltage conversion circuit 4 may include one or more switching units (e.g., transistors), and the drive signal S2 is used to drive the switching units of the voltage conversion circuit 4 to turn on or off, so as to adjust the value of the output voltage VOUT.

[0058] In this embodiment, modulation circuits with different power consumption are selected to generate modulation signals based on different operating states of the electronic device. Compared with using voltage-mode modulation circuits in any operating state of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0059] In some embodiments, such as Figure 2As shown, the selection circuit 2 includes a signal generation circuit 21, a first switching circuit 22, and a second switching circuit 23. The input terminal of the signal generation circuit 21 receives the control command CTRL and generates a control signal S3 based on the control command CTRL. Each input terminal of the first switching circuit 22 is electrically connected to the output terminal of a modulation circuit 1, and the output terminal of the first switching circuit 22 is electrically connected to the input terminal of the drive circuit 3. The control terminal of the first switching circuit 22 is electrically connected to the output terminal of the signal generation circuit 21. The second switching circuit 23 is electrically connected between at least a portion of the power supply terminal of the modulation circuit 1 and the corresponding power supply VDD. The control terminal of the second switching circuit 23 is electrically connected to the output terminal of the signal generation circuit 21.

[0060] In some examples, the current operating state of the electronic device can be a low-power operating state. The system-on-a-chip (SoC) of the electronic device can generate a first-level control command (CTRL) based on this low-power operating state. After receiving the control command CTRL, the signal generation circuit 21 can generate a corresponding control signal S3 to control the first switching circuit 22 and the second switching circuit 23, selecting the modulation signal S1 output by the lower-power modulation circuit 1 (e.g., a hysteresis-mode modulation circuit) to save power. In other examples, the current operating state of the electronic device can be a high-power operating state or a normal-power operating state. The SoC of the electronic device can generate a second-level control command (CTRL) based on this high-power operating state or normal-power operating state. After receiving the control command CTRL, the signal generation circuit 21 can generate a corresponding control signal S3 to control the first switching circuit 22 and the second switching circuit 23, selecting the modulation signal S1 output by the higher-power modulation circuit 1 (e.g., a voltage-mode modulation circuit) to adapt to the scenario of multi-phase voltage conversion circuit 4 working collaboratively. The first level and the second level are different; for example, the first level is low and the second level is high, or the first level is high and the second level is low.

[0061] In some examples, the first switching circuit 22 can be a multiplexer. Each input of the multiplexer is electrically connected to the output of a modulation circuit 1, and different modulation signals S1 can be selected by controlling the conduction between the output of the multiplexer and different inputs through the control signal S3.

[0062] In some examples, such as Figure 2As shown, the modulation circuit 1 electrically connected to the second switching circuit 23 can be a high-power modulation circuit 1 (e.g., a voltage-mode modulation circuit). When the modulation signal S1 output by the modulation circuit 1 is not selected, the second switching circuit 23 can be controlled by the control signal S3 to disconnect the electrical connection between the modulation circuit 1 and the corresponding power supply VDD, preventing energy loss due to the static power consumption of the modulation circuit 1. The modulation circuit 1 directly connected to the corresponding power supply VDD can be a low-power modulation circuit 1 (e.g., a hysteresis-mode modulation circuit). Because the static power consumption of this modulation circuit 1 is negligible, it does not need to be electrically connected to the corresponding power supply VDD through the second switching circuit 23. Even if the modulation signal S1 output by the modulation circuit 1 is not selected, the connection between the modulation circuit 1 and the corresponding power supply VDD is not disconnected, reducing the complexity of the control circuit and saving hardware costs.

[0063] In other examples, each modulation circuit 1 is electrically connected to the second switching circuit 23. For instance, both the high-power modulation circuit 1 (e.g., a voltage-mode modulation circuit) and the low-power modulation circuit 1 (e.g., a hysteresis-mode modulation circuit) are electrically connected to the second switching circuit 23. When the modulation signal S1 output by the low-power modulation circuit 1 is selected, the second switching circuit 23 can be controlled by the control signal S3 to disconnect the high-power modulation circuit 1 from the corresponding power supply VDD. Simultaneously, the inverted signal of the control signal S3 can be used to control the second switching circuit 23 to connect the low-power modulation circuit 1 to the corresponding power supply VDD. Similarly, when the modulation signal S1 output by the high-power modulation circuit 1 is selected, the second switching circuit 23 can be controlled by the control signal S3 to connect the high-power modulation circuit 1 to the corresponding power supply VDD. Simultaneously, the inverted signal of the control signal S3 can be used to control the second switching circuit 23 to disconnect the low-power modulation circuit 1 from the corresponding power supply VDD.

[0064] In this embodiment, while selecting the desired modulation signal, energy efficiency loss caused by the static power consumption of the high-power modulation circuit can be prevented.

[0065] In some embodiments, such as Figure 3 As shown, the first switching circuit 22 includes a multiplexer MUX. Each input terminal of the multiplexer MUX is electrically connected to the output terminal of a modulation circuit 1, the output terminal of the multiplexer MUX is electrically connected to the input terminal of the drive circuit 3, and the control terminal of the multiplexer MUX is electrically connected to the output terminal of the signal generation circuit 21.

[0066] A multiplexer (MUX) is a selector used to select one of multiple signals received from multiple inputs and send it to a single output.

[0067] The multiplexer MUX can be used to select one of the multiple modulation signals S1 received from multiple input terminals and output the selected modulation signal S1 to the output terminal so as to output the selected modulation signal S1 to the driver circuit 3.

[0068] In this embodiment, by using a multiplexer, it is not necessary to set up separate lines and switching devices for each modulation signal, which solves the problem of difficult wiring and avoids waste of resources.

[0069] In some embodiments, such as Figure 4 As shown, the multiple modulation circuits 1 include a first comparator circuit 11 and a second comparator circuit 12. The first input terminal of the first comparator circuit 11 is electrically connected to the output terminal of the voltage conversion circuit 4, the second input terminal of the first comparator circuit 12 is used to receive the reference voltage VREF, and the output terminal of the first comparator circuit 11 is electrically connected to the first input terminal of the selection circuit 2. Similarly, the first input terminal of the second comparator circuit 12 is electrically connected to the output terminal of the voltage conversion circuit 4, the second input terminal of the second comparator circuit 12 is used to receive the reference voltage VREF, and the output terminal of the second comparator circuit 12 is electrically connected to the second input terminal of the selection circuit 2. The power consumption of the first comparator circuit 11 is less than that of the second comparator circuit 12.

[0070] In some examples, the first comparator circuit 11 can be a hysteresis mode modulation (HMM) circuit. The HMM circuit can set upper and lower threshold values ​​symmetrically distributed along the reference voltage VREF. When the output voltage VOUT drops below the lower threshold or rises above the upper threshold, the output value of the HMM circuit flips, thereby generating the modulation signal S1. The second comparator circuit 12 can be a voltage mode modulation (VMM) circuit. The VMM circuit can be used to compare the output voltage VOUT of the voltage conversion circuit 4 with the reference voltage VREF, amplify the difference between the two to generate an error signal, and compare this error signal with a carrier signal of a fixed frequency (e.g., a sawtooth wave or a triangular wave) to obtain the modulation signal S1. The power consumption of the HMM circuit can be less than that of the VMM circuit.

[0071] In some examples, the reference voltage VREF can be generated by the reference voltage generation circuit of the power supply chip of the electronic device. The reference voltage VREF can be used to characterize the voltage value to which the output voltage VOUT needs to be modulated.

[0072] In this embodiment, the multiple modulation circuits include a first comparison circuit and a second comparison circuit with different power consumption. The corresponding comparison circuit can be selected as the modulation circuit according to the operating state of the electronic device. Compared with using a modulation circuit with high power consumption in any operating state of the electronic device, the energy efficiency loss is reduced.

[0073] In some embodiments, such as Figure 5 As shown, the first comparator circuit 11 includes a first comparator CMP1. The first input terminal of the first comparator CMP1 is electrically connected to the output terminal of the voltage conversion circuit 4, the second input terminal of the first comparator CMP1 is used to receive the reference voltage VREF, and the output terminal of the first comparator CMP1 is electrically connected to the first input terminal of the selection circuit 2.

[0074] A comparator (CMP) compares an analog voltage signal received at two input terminals with an analog voltage threshold, and outputs a digital signal based on the comparison result. For example, it outputs a high level when the analog voltage signal is greater than the analog voltage threshold, and a low level when the analog voltage signal is less than the analog voltage threshold. In other words, the analog voltage threshold is the toggle threshold at which the output digital signal flips when the analog voltage signal rises or falls.

[0075] In some examples, the first comparator CMP1 can be a hysteresis comparator. Compared to a regular comparator, the switching threshold of the output signal of a hysteresis comparator is no longer a single threshold, but two different thresholds. The difference between the two thresholds can be called the hysteresis width of the hysteresis comparator. The two thresholds can be an upper threshold and a lower threshold symmetrically distributed along the reference voltage VREF. When the output voltage VOUT drops below the lower threshold or rises above the upper threshold, the output value of the first comparator CMP1 flips, thereby generating the modulation signal S1.

[0076] In this embodiment, the first comparator is used as the modulation circuit, which consumes less power and reduces energy loss.

[0077] In some embodiments, such as Figure 6 As shown, the second comparator circuit 12 includes a differential amplifier AMP, a second comparator CMP2, and a compensation circuit LC. The first input terminal of the differential amplifier AMP is electrically connected to the output terminal of the voltage conversion circuit 4, and the second input terminal of the differential amplifier AMP is used to receive the reference voltage VREF. The power supply terminal of the differential amplifier AMP is electrically connected to the corresponding power supply VDD through the first terminal of the second switching circuit 23. The first input terminal of the second comparator CMP2 is electrically connected to the output terminal of the differential amplifier AMP, and the second input terminal of the second comparator CMP2 is used to receive the carrier signal S4. The power supply terminal of the second comparator CMP2 is electrically connected to the corresponding power supply VDD through the second terminal of the second switching circuit 23, and the output terminal of the second comparator CMP2 is electrically connected to the second input terminal of the selection circuit 2. The first terminal of the compensation circuit LC is electrically connected to the output terminal of the differential amplifier AMP, and the second terminal of the compensation circuit LC is electrically connected to the ground terminal GND.

[0078] A differential amplifier is used to amplify the voltage difference between two voltage signals received at two input terminals. In some examples, the differential amplifier AMP can be an error amplifier (EA). An error amplifier is a special type of differential amplifier used in modulation circuit 1, primarily concerned with scenarios where the output voltage VOUT is close to the reference voltage VREF, used to reduce the difference between the two to zero. The differential amplifier AMP can multiply the difference between the reference voltage VREF and the output voltage VOUT by a preset factor and output this as the error signal S5 to the second comparator CMP2.

[0079] In some examples, the second comparator CMP2 can be a pulse width modulation comparator used to compare the error signal S5 with the carrier signal S4. When the error signal S5 is greater than the carrier signal S4, the second comparator CMP2 can output a high level, and when the error signal S5 is less than the carrier signal S4, the second comparator CMP2 can output a low level, thereby generating the modulation signal S1.

[0080] In some examples, the carrier signal S4 can be a sawtooth or triangular wave generated by the carrier signal generation circuit of the power supply chip of the electronic device. The frequency of the carrier signal S4 can be a fixed value. The frequency of the modulation signal S1 output by the second comparator CMP2 is the same fixed value as the frequency of the carrier signal S4, and the duty cycle varies with the error signal S5.

[0081] In some examples, the compensation circuit LC may include a resistor and a capacitor connected in series to compensate for the phase delay of the error signal S5, ensuring that the system composed of the control circuit and the voltage conversion circuit 4 can work stably and avoid oscillation.

[0082] In some examples, to ensure that the second comparator circuit 12 has sufficient responsiveness to changes in the output voltage VOUT, the differential amplifier AMP needs to have a large bandwidth. The quiescent current of the differential amplifier AMP is proportional to its bandwidth; a larger bandwidth results in higher quiescent power consumption, leading to significant energy efficiency loss. Without selecting the modulation signal S1 output by the second comparator circuit 12, the electrical connection between the differential amplifier AMP and the second comparator CMP2 and the power supply VDD can be disconnected via the second switching circuit 23, thereby preventing energy efficiency loss due to the quiescent power consumption of the second comparator circuit 12.

[0083] In this embodiment, a second comparator circuit, including a differential amplifier, a second comparator, and a compensation circuit, is used as the modulation circuit. The output modulation signal has a fixed frequency, which can be adapted to the scenario of multiphase voltage conversion circuit working together.

[0084] In some embodiments, such as Figure 7 As shown, the second switching circuit 23 includes a first switching unit 231 and a second switching unit 232. The first switching unit 231 is electrically connected between the power supply terminal of the differential amplifier AMP and the corresponding power supply VDD, and the control terminal of the first switching unit 231 is electrically connected to the output terminal of the signal generation circuit 21. The second switching unit 232 is electrically connected between the power supply terminal of the second comparator CMP2 and the corresponding power supply VDD, and the control terminal of the second switching unit 232 is electrically connected to the output terminal of the signal generation circuit 21.

[0085] In some examples, to ensure that the second comparator circuit 12 has sufficient responsiveness to changes in the output voltage VOUT, the differential amplifier AMP needs to have a large bandwidth. The quiescent current of the differential amplifier AMP is proportional to its bandwidth; a large bandwidth results in a large quiescent power consumption of the differential amplifier AMP, causing significant energy efficiency loss. Without selecting the modulation signal S1 output by the second comparator circuit 12, the electrical connection between the differential amplifier AMP and the corresponding power supply VDD can be disconnected via the first switching unit 231, and the electrical connection between the second comparator CMP2 and the corresponding power supply VDD can be disconnected via the second switching unit 232, thereby preventing energy efficiency loss due to the quiescent power consumption of the second comparator circuit 12.

[0086] In this embodiment, by disconnecting the first switching unit and the second switching unit, energy efficiency loss caused by the static power consumption of the second comparison circuit can be prevented.

[0087] In some embodiments, when the operating state is the first state, the selection circuit 2 selects the comparison signal output by the first comparison circuit 11 and controls the second comparison circuit 12 to be powered off. When the operating state is the second state, the selection circuit 2 selects the comparison signal output by the second comparison circuit 12. The power consumption of the electronic device in the first state is less than the power consumption in the second state.

[0088] In some examples, the first state can be a low-power operating state, and the second state can be a high-power operating state or a normal-power operating state.

[0089] In some examples, when the operating state is the first state, selection circuit 2 can be activated by strobing such as... Figure 4 The first input and output terminals of the first switching circuit 22 shown are used to select the comparison signal output by the first comparison circuit 11 as the modulation signal S1. Figure 4 As shown, the second switching circuit 23 is electrically connected between the power supply terminal of the second comparator circuit 12 and the corresponding power supply VDD. In the first operating state, the selection circuit 2 can control the second comparator circuit 12 to be de-energized by disconnecting the second switching circuit 23. In the second operating state, the selection circuit 2 can select the power supply terminal of the second comparator circuit 12 to be de-energized by... Figure 4 The second input and output terminals of the first switching circuit 22 shown are used to select the comparison signal output by the second comparison circuit 12 as the modulation signal S1, and at the same time, the second switching circuit 23 is turned on so that the corresponding power supply VDD supplies power to the second comparison circuit 12.

[0090] In this embodiment, selecting a comparator circuit with lower power consumption during low-power operation can reduce energy consumption. At the same time, disconnecting the power supply to the unselected comparator circuit can further avoid energy loss.

[0091] In some embodiments, the selection circuit 2 is further configured to control the selected modulation circuit 1 to be powered on and the unselected modulation circuit 1 to be powered off.

[0092] In some examples, the selection circuit 2 can be connected in series in the power supply line of each modulation circuit 1. The selection circuit 2 can control the selected modulation circuit 1 to be powered on by its own conduction and control the unselected modulation circuit 1 to be powered off by its own disconnection.

[0093] In this embodiment, only the selected modulation circuit is powered on, which can avoid energy loss.

[0094] In some embodiments, such as Figure 8 As shown, the control circuit also includes a voltage sampling circuit 5. The voltage sampling circuit 5 is electrically connected between the output terminal of the voltage conversion circuit 4 and the input terminals of each modulation circuit 1. The voltage sampling circuit 5 is used to sample the output voltage VOUT. The modulation circuit 1 is used to generate a modulation signal S1 based on the sampled output voltage VFB.

[0095] In some examples, the voltage sampling circuit 5 can be a voltage divider circuit, where the voltage value of the sampled output voltage VFB is less than the voltage value of the output voltage VOUT at the same moment the sampling operation is performed.

[0096] In this embodiment, because the output voltage of the voltage conversion circuit is much higher than the withstand voltage of the modulation circuit, the voltage value of the sampled output voltage is reduced by the voltage sampling circuit, so that it can be adapted to the working voltage of the modulation circuit, thus avoiding damage to the modulation circuit by directly using the output voltage.

[0097] In some embodiments, different operating states correspond to different operating scenarios of electronic devices.

[0098] In some examples, the operating state can include a first state and a second state, where the power consumption of the electronic device in the first state is less than that in the second state. The operating scenario corresponding to the first state can be standby, sleep, or other scenarios for the electronic device. The operating scenario corresponding to the second state can be regular use of the electronic device (such as playing videos, playing audio, navigation, etc.), benchmarking, or playing large-scale games.

[0099] In this embodiment, different operating states correspond to different operating scenarios of electronic devices. The optimal modulation circuit can be selected according to the actual operating conditions of the electronic device to avoid energy waste.

[0100] In some embodiments, the operating scenario includes a first scenario and a second scenario. The power consumption of the electronic device in the second scenario is less than the power consumption of the electronic device in the first scenario. The power consumption of the modulation circuit 1 selected by the selection circuit 2 in the second scenario is less than the power consumption of the modulation circuit 1 selected in the first scenario.

[0101] In some examples, the first scenario could be a regular use scenario of the electronic device (such as playing videos, playing audio, navigation, etc.), a benchmarking scenario, or a large-scale game scenario. The second scenario could be a standby or sleep scenario of the electronic device. In the first scenario, the modulation circuit 1 selected by selection circuit 2 can be a voltage-mode modulation circuit to meet the requirements of the multiphase voltage conversion circuit 4 working together. In the second scenario, the multiphase voltage conversion circuit 4 does not need to work together, and the modulation circuit 1 selected by selection circuit 2 can be a hysteresis-mode modulation circuit to reduce power consumption.

[0102] In this embodiment, selecting a modulation circuit with lower power consumption in low-power operation scenarios of electronic devices can reduce the energy efficiency loss caused by the modulation circuit in low-power operation scenarios.

[0103] In some exemplary embodiments, such as Figure 9As shown, a control circuit is provided. The control circuit includes a first comparator CMP1, a differential amplifier AMP, a second comparator CMP2, a compensation circuit LC, a signal generation circuit 21, a multiplexer MUX, a first switching unit 231, a second switching unit 232, a third switching unit 233, a drive circuit 3, and a voltage sampling circuit 5. The voltage sampling circuit 5 is a voltage divider circuit, which includes a first resistor R1 and a second resistor R2. The first end of the first resistor R1 is electrically connected to the output terminal of the voltage conversion circuit 4, and the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2. The second end of the second resistor R2 is electrically connected to the ground terminal GND, and the second end of the first resistor R1 is used to output the sampled output voltage VFB. The first input terminal of the first comparator CMP1 is electrically connected to the second end of the first resistor R1, and the second input terminal of the first comparator CMP1 is used to receive the reference voltage VREF. The first input terminal of the differential amplifier AMP is electrically connected to the second end of the first resistor R1, and the second input terminal of the differential amplifier AMP is used to receive the reference voltage VREF. The first input of the second comparator CMP2 is electrically connected to the output of the differential amplifier AMP to receive the error signal S5 from the differential amplifier AMP. The second input of the second comparator CMP2 is used to receive the carrier signal S4 (the carrier signal S4 is, for example, a triangular wave or sawtooth wave with a fixed period). The compensation circuit LC includes a third resistor R3 and a capacitor C. The first end of the third resistor R3 is electrically connected to the output of the differential amplifier AMP, and the second end of the third resistor R3 is electrically connected to the first end of the capacitor C. The second end of the capacitor C is used to connect to the ground terminal GND. The input of the signal generation circuit 21 is used to receive the control command CTRL from the system-on-a-chip (SOC). The signal generation circuit 21 is used to generate the control signal S3 according to the control command CTRL. The first input of the multiplexer MUX is electrically connected to the output of the first comparator CMP1, the second input of the multiplexer MUX is electrically connected to the output of the second comparator CMP2, and the control terminal of the multiplexer MUX is electrically connected to the output of the signal generation circuit 21. The first terminal of the first switching unit 231 is electrically connected to the power supply terminal of the differential amplifier AMP, and the second terminal of the first switching unit 231 is electrically connected to the power supply VDD corresponding to the differential amplifier AMP. The control terminal of the first switching unit 231 is electrically connected to the output terminal of the signal generation circuit 21. The first terminal of the second switching unit 232 is electrically connected to the power supply terminal of the second comparator CMP2, and the second terminal of the second switching unit 232 is electrically connected to the power supply VDD corresponding to the second comparator CMP2. The control terminal of the second switching unit 232 is electrically connected to the output terminal of the signal generation circuit 21.The first terminal of the third switching unit 233 is electrically connected to the power supply terminal of the first comparator CMP1, and the second terminal of the third switching unit 233 is electrically connected to the power supply VDD corresponding to the first comparator CMP1. The control terminal of the third switching unit 233 is electrically connected to the output terminal of the signal generation circuit 21. The input terminal of the drive circuit 3 is electrically connected to the output terminal of the multiplexer MUX to receive a modulation signal S1 selected by the multiplexer MUX from multiple modulation signals S1. The output terminal of the drive circuit 3 is electrically connected to the control terminal of the voltage conversion circuit 4. The drive circuit 3 generates a drive signal S2 based on the received modulation signal S1 and outputs the drive signal S2 to the voltage conversion circuit 4. In some examples, the voltage conversion circuit 4 can be a buck circuit, a boost circuit, or a buck-boost circuit.

[0104] In some exemplary embodiments, a control chip is provided, which includes any of the control circuits described in the above embodiments. Because the control chip includes the control circuits described in the above embodiments, it can select modulation circuits with different power consumption to generate modulation signals based on different operating states of the electronic device. Compared to using voltage-mode modulation circuits in all operating states of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0105] In some exemplary embodiments, a power supply chip is provided, which includes any of the control circuits or control chips described in the above embodiments. Because the power supply chip includes the control circuits or control chips described in the above embodiments, it can select modulation circuits with different power consumption to generate modulation signals based on different operating states of the electronic device. Compared to using voltage-mode modulation circuits in all operating states of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0106] In some embodiments, the power chip further includes a voltage conversion circuit 4. The voltage conversion circuit 4 is electrically connected to the control circuit, and the drive signal S2 generated by the control circuit is used to drive the switch of the voltage conversion circuit 4 to turn on or off.

[0107] In some examples, voltage conversion circuit 4 can be a buck circuit, a boost circuit, or a buck-boost circuit. Voltage conversion circuit 4 may include one or more switches (e.g., transistors).

[0108] In this embodiment, the driving signal is used to drive the switch of the voltage conversion circuit to turn on or off, so as to modulate the value of the output voltage of the voltage conversion circuit.

[0109] In some exemplary embodiments, an electronic device is provided, which includes a control chip as described in the above embodiments, or any of the power supply chips as described in the above embodiments. The electronic device also includes a system-on-a-chip (SoC) for generating and issuing control commands (CTRL) to the driver chip or power supply chip. Because the electronic device includes the control chip or power supply chip described in the above embodiments, modulation circuits with different power consumption can be selected to generate modulation signals based on different operating states of the electronic device. Compared to using voltage-mode modulation circuits in all operating states of the electronic device, this reduces energy loss and thus increases the battery life of the electronic device.

[0110] In some exemplary embodiments, such as Figure 10 As shown, an electronic device 1000 is provided. The electronic device 1000 may include one or more of the following components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, and a communication component 1016.

[0111] Processing component 1002 typically controls the overall operation of electronic device 1000, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 1002 may include one or more processors 1020 to execute instructions. Furthermore, processing component 1002 may include one or more modules to facilitate interaction between processing component 1002 and other components. For example, processing component 1002 may include a multimedia module to facilitate interaction between multimedia component 1008 and processing component 1002.

[0112] Memory 1004 is configured to store various types of data to support the operation of electronic device 1000. Examples of such data include instructions for any application or method operating on electronic device 1000, contact data, phonebook data, messages, pictures, videos, etc. Memory 1004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0113] Power supply component 1006 provides power to various components of electronic device 1000. Power supply component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 1000.

[0114] Multimedia component 1008 includes a screen that provides an output interface between electronic device 1000 and user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 1008 includes a front-facing camera and / or a rear-facing camera. When electronic device 1000 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0115] Audio component 1010 is configured to output and / or input audio signals. For example, audio component 1010 includes a microphone (MIC) configured to receive external audio signals when electronic device 1000 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1004 or transmitted via communication component 1016. In some embodiments, audio component 1010 also includes a speaker for outputting audio signals.

[0116] I / O interface 1012 provides an interface between processing component 1002 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0117] Sensor assembly 1014 includes one or more sensors for providing state assessments of various aspects of electronic device 1000. For example, sensor assembly 1014 may detect the on / off state of electronic device 1000, the relative positioning of components such as the display and keypad of electronic device 1000, changes in position of electronic device 1000 or a component of electronic device 1000, the presence or absence of user contact with electronic device 1000, the orientation or acceleration / deceleration of electronic device 1000, and temperature changes of electronic device 1000. Sensor assembly 1014 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1014 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1014 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0118] Communication component 1016 is configured to facilitate wired or wireless communication between electronic device 1000 and other devices. Electronic device 1000 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 1016 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1016 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0119] In an exemplary embodiment, the electronic device 1000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0120] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1004 including instructions that can be executed by a processor 1020 of an electronic device 1000. For example, the non-transitory computer-readable storage medium may be a ROM, CD-ROM, magnetic tape, floppy disk, or optical data storage device.

[0121] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0122] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A control circuit, characterized in that, The control circuit includes: Multiple modulation circuits are provided, each of which has an input terminal that is electrically connected to the output terminal of a voltage conversion circuit. The modulation circuits generate a modulation signal based on the output voltage of the voltage conversion circuit. The power consumption of different modulation circuits varies. The selection circuit is electrically connected to multiple modulation circuits and is used to receive control commands. The selection circuit is used to select the modulation signal output by the corresponding modulation circuit according to the control commands. The control commands are generated based on the operating state of the electronic device. A driving circuit is electrically connected to the selection circuit and is also electrically connected to the control terminal of the voltage conversion circuit. The driving circuit generates a driving signal based on the modulation signal selected by the selection circuit and outputs the driving signal to the voltage conversion circuit.

2. The control circuit according to claim 1, characterized in that, The selection circuit includes: A signal generation circuit, wherein the input terminal of the signal generation circuit is used to receive the control command, and the signal generation circuit is used to generate a control signal according to the control command; A first switching circuit, wherein each input terminal of the first switching circuit is electrically connected to the output terminal of a modulation circuit, the output terminal of the first switching circuit is electrically connected to the input terminal of the driving circuit, and the control terminal of the first switching circuit is electrically connected to the output terminal of the signal generation circuit. A second switching circuit is electrically connected between the power supply terminal of at least a portion of the modulation circuit and the corresponding power supply, and the control terminal of the second switching circuit is electrically connected to the output terminal of the signal generation circuit.

3. The control circuit according to claim 2, characterized in that, The first switching circuit includes: A multiplexer, wherein each input terminal of the multiplexer is electrically connected to the output terminal of one of the modulation circuits, the output terminal of the multiplexer is electrically connected to the input terminal of the driving circuit, and the control terminal of the multiplexer is electrically connected to the output terminal of the signal generation circuit.

4. The control circuit according to claim 2, characterized in that, The plurality of modulation circuits include: A first comparator circuit, wherein a first input terminal of the first comparator circuit is electrically connected to the output terminal of the voltage conversion circuit, a second input terminal of the first comparator circuit is used to receive a reference voltage, and the output terminal of the first comparator circuit is electrically connected to the first input terminal of the selection circuit. The second comparator circuit has a first input terminal that is electrically connected to the output terminal of the voltage conversion circuit, a second input terminal that is used to receive the reference voltage, and an output terminal that is electrically connected to the second input terminal of the selection circuit. The power consumption of the first comparison circuit is less than that of the second comparison circuit.

5. The control circuit according to claim 4, characterized in that, The first comparator circuit includes: A first comparator has a first input terminal electrically connected to the output terminal of the voltage conversion circuit, a second input terminal of the first comparator for receiving the reference voltage, and an output terminal electrically connected to the first input terminal of the selection circuit.

6. The control circuit according to claim 4, characterized in that, The second comparator circuit includes: A differential amplifier, wherein the first input terminal of the differential amplifier is electrically connected to the output terminal of the voltage conversion circuit, the second input terminal of the differential amplifier is used to receive the reference voltage, and the power supply terminal of the differential amplifier is electrically connected to the corresponding power supply through the first terminal of the second switching circuit; The second comparator has its first input terminal electrically connected to the output terminal of the differential amplifier, its second input terminal used to receive a carrier signal, its power supply terminal electrically connected to the corresponding power supply through the second terminal of the second switching circuit, and its output terminal electrically connected to the second input terminal of the selection circuit. A compensation circuit is provided, wherein the first end of the compensation circuit is electrically connected to the output end of the differential amplifier, and the second end of the compensation circuit is electrically connected to the ground terminal.

7. The control circuit according to claim 6, characterized in that, The second switching circuit includes: The first switching unit is electrically connected between the power supply terminal of the differential amplifier and the corresponding power supply, and the control terminal of the first switching unit is electrically connected to the output terminal of the signal generation circuit. The second switching unit is electrically connected between the power supply terminal of the second comparator and the corresponding power supply, and the control terminal of the second switching unit is electrically connected to the output terminal of the signal generation circuit.

8. The control circuit according to claim 4, characterized in that, When the operating state is the first state, the selection circuit selects the comparison signal output by the first comparison circuit and controls the second comparison circuit to be powered off. When the operating state is the second state, the selection circuit selects the comparison signal output by the second comparison circuit; The power consumption of the electronic device in the first state is less than the power consumption in the second state.

9. The control circuit according to claim 1, characterized in that, The selection circuit is also used to control the selected modulation circuit to be powered on, and the unselected modulation circuit to be powered off.

10. The control circuit according to claim 1, characterized in that, The control circuit also includes: A voltage sampling circuit is electrically connected between the output terminal of the voltage conversion circuit and the input terminals of each of the modulation circuits, and the voltage sampling circuit is used to sample the output voltage. The modulation circuit is used to generate the modulation signal based on the sampled output voltage.

11. The control circuit according to any one of claims 1 to 10, characterized in that, The different operating states correspond to different operating scenarios of the electronic device.

12. The control circuit according to claim 11, characterized in that, The operating scenarios include a first scenario and a second scenario. In the second scenario, the power consumption of the electronic device is less than that of the electronic device in the first scenario. The power consumption of the modulation circuit selected by the selection circuit in the second scenario is less than that of the modulation circuit selected in the first scenario.

13. A control chip, characterized in that, The control chip includes the control circuit as described in any one of claims 1 to 12.

14. A power supply chip, characterized in that, The power chip includes a control circuit as described in any one of claims 1 to 12, or a control chip as described in claim 13.

15. The power chip according to claim 14, characterized in that, The power chip also includes: A voltage conversion circuit is electrically connected to the control circuit, and the drive signal generated by the control circuit is used to drive the switch of the voltage conversion circuit to turn on or off.

16. An electronic device, characterized in that, The electronic device includes the control chip as described in claim 13, or the power chip as described in claim 14 or 15; The electronic device also includes a system-on-a-chip (SoC) for generating and sending the control commands to the driver chip or power chip.

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