CN215987064U - Voltage regulating circuit, device and electronic device - Google Patents
Voltage regulating circuit, device and electronic device Download PDFInfo
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Abstract
Provided are a voltage regulating circuit, a voltage regulating device and an electronic device, wherein the voltage regulating circuit includes a plurality of voltage regulating modules, each of which includes: the port expansion module comprises an input port and an output port, the output port comprises at least one sub-output port, and the input port is connected to the controller; at least one voltage regulator, each voltage regulator including a control signal port and a supply voltage port, wherein, for each voltage regulator, the control signal port of the voltage regulator is connected to a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is configured to: in response to receiving the sub-voltage control signal from the corresponding sub-output port of the port expansion module, a supply voltage corresponding to the sub-voltage control signal is output on the supply voltage port.
Description
Technical Field
The present invention relates to the field of circuit technologies, and in particular, to a voltage regulating circuit, a voltage regulating device, and an electronic device.
Background
In the circuit, one or more power supply voltages (e.g., analog voltage supply AVDD, core voltage supply DVDD, interface voltage supply IOVDD, etc.) need to be supplied to the functional module (e.g., sensor, analog-to-digital converter, central processor, etc.) so that it can operate.
However, the required supply voltage values are usually different for different models of functional modules. Therefore, if a functional module in a circuit is replaced with another type of functional module, it is often necessary to adjust a power supply circuit that supplies power to the functional module accordingly, for example, to replace a regulator chip in the power supply circuit, which leads to complexity in operation.
The approaches described in this section are not necessarily approaches that have been previously conceived or pursued. Unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of their inclusion in this section. Similarly, unless otherwise indicated, the problems mentioned in this section should not be considered as having been acknowledged in any prior art.
SUMMERY OF THE UTILITY MODEL
According to an aspect of the present invention, there is provided a voltage regulating circuit comprising a plurality of voltage regulating modules, wherein each voltage regulating module comprises: a port expansion module comprising an input port and an output port, the output port comprising at least one sub-output port, the input port being connected to the controller, wherein the port expansion module is configured to: in response to receiving a chip select signal from the controller, causing an input port of a port expansion module to be selected to receive a control signal from the controller; and in response to receiving a control signal from the controller, outputting a voltage control signal corresponding to the control signal on the output port, wherein on each sub-output port, a sub-voltage control signal corresponding to the sub-output port is output; at least one voltage regulator, each voltage regulator including a control signal port and a supply voltage port, wherein, for each voltage regulator, the control signal port of the voltage regulator is connected to a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is configured to: in response to receiving the sub-voltage control signal from the corresponding sub-output port of the port expansion module, a supply voltage corresponding to the sub-voltage control signal is output on the supply voltage port.
According to another aspect of the present invention, there is provided a voltage regulating device including: a controller including a control port; and a voltage regulation circuit according to the present disclosure.
According to still another aspect of the present invention, there is provided an electronic apparatus including: a voltage regulation device according to the present disclosure; and one or more power consuming modules, wherein each power consuming module is connected to a supply voltage port of a corresponding one of the voltage regulating devices to receive a supply voltage from the corresponding voltage regulator.
According to one or more embodiments of the utility model, software adjustment of the multi-path power supply voltage is realized, and hardware devices in the circuit are prevented from being replaced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the embodiments and, together with the description, serve to explain the exemplary implementations of the embodiments. The illustrated embodiments are for purposes of illustration only and do not limit the scope of the claims. Throughout the drawings, identical reference numbers designate similar, but not necessarily identical, elements.
FIG. 1 shows a schematic view of an electronic device according to an embodiment of the utility model;
FIG. 2 shows a schematic diagram of a voltage regulation circuit according to an embodiment of the utility model;
FIG. 3 shows a schematic diagram of a voltage regulation circuit according to an embodiment of the utility model;
FIG. 4 shows a schematic diagram of a port expansion module according to an embodiment of the utility model;
FIG. 5 shows a schematic diagram of a voltage regulation circuit according to an embodiment of the utility model.
Detailed Description
In the present invention, unless otherwise specified, the use of the terms "first", "second", and the like to describe various elements is not intended to limit the positional relationship, the timing relationship, or the importance relationship of the elements, and such terms are used only to distinguish one element from another. In some examples, a first element and a second element may refer to the same instance of the element, and in some cases, based on the context, they may also refer to different instances.
The terminology used in the description of the various described examples herein is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, the elements may be one or more. Furthermore, as used herein, the term "and/or" encompasses any and all possible combinations of the listed items.
In order to solve the problem that when a certain module in a circuit is adjusted, a power supply circuit for supplying power to the module needs to be adjusted correspondingly, the utility model provides a voltage adjusting circuit, which comprises a plurality of voltage adjusting modules, wherein each voltage adjusting module comprises: a port expansion module comprising an input port and an output port, the output port comprising at least one sub-output port, the input port being connected to the controller, wherein the port expansion module is configured to: in response to receiving a chip select signal from the controller, causing an input port of a port expansion module to be selected to receive a control signal from the controller; and in response to receiving a control signal from the controller, outputting a voltage control signal corresponding to the control signal on the output port, wherein on each sub-output port, a sub-voltage control signal corresponding to the sub-output port is output; at least one voltage regulator, each voltage regulator including a control signal port and a supply voltage port, wherein, for each voltage regulator, the control signal port of the voltage regulator is connected to a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is configured to: in response to receiving the sub-voltage control signal from the corresponding sub-output port of the port expansion module, a supply voltage corresponding to the sub-voltage control signal is output on the supply voltage port.
FIG. 1 shows a schematic diagram of an electronic device 100 according to an embodiment of the utility model.
As shown in fig. 1, the electronic device 100 includes a voltage regulating device 110 and a power consuming module 120, wherein the power consuming module 120 receives a power supply voltage 122 from the voltage regulating device 110, and the voltage regulating device 110 can regulate a voltage value of the provided power supply voltage 122 according to a requirement of the power consuming module 120.
It should be understood that although fig. 1 shows only one power consuming module 120, fig. 1 is exemplary and that electronic device 100 may include multiple power consuming modules 120 powered by voltage regulating device 110, wherein each power consuming module 120 may receive one or more power supply voltages from voltage regulating device 110.
According to some embodiments, as shown in fig. 1, the voltage regulating device 110 includes a controller 111 and a voltage regulating circuit 112, wherein the controller 111 outputs a control signal to the voltage regulating circuit 112 to output a value of the supply voltage 122 output by the voltage regulating circuit 112.
In the present invention, the "electronic device" may be any type of electronic device, for example, but not limited to, a mobile device such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a vehicle-mounted terminal (e.g., a car navigation terminal), and the like, and a fixed device such as a digital TV, a desktop computer, and the like.
In the present invention, the "power consumption module" may be various functional modules in the electronic device, for example, a sensor, an analog-to-digital converter, a central processing unit, and the like.
FIG. 2 shows a schematic diagram of a voltage regulation circuit 200 according to an embodiment of the utility model.
As shown in fig. 2, the voltage regulation circuit 200 includes a plurality of voltage regulation modules 210, 220, wherein each voltage regulation module includes a port extension module and at least one voltage regulator, e.g., a first voltage regulation module 210 includes a first port extension module 211, a first voltage regulator 212, and a second voltage regulator 213, and a second voltage regulation module 220 includes a second port extension module 221 and a third voltage regulator 222. It should be understood that although two voltage regulation modules are shown in fig. 2, fig. 2 is merely exemplary and voltage regulation circuit 200 may include a greater number of voltage regulation modules (e.g., three).
According to some embodiments, the port expansion module in each voltage regulation module comprises an input port and an output port, wherein the output port comprises at least one sub-output port, and the input port is connected to the controller 230. As shown in fig. 2, the first port expansion module 211 and the second port expansion module 221 are connected to the controller 230 through an input port 2111 and an input port 2211, respectively, the output port 2112 includes a first sub-output port 2112a and a second sub-output port 2112b, and the output port 2212 includes a third sub-output port 2212a and a fourth sub-output port 2212 b. It should be understood that although it is shown in fig. 2 that the port expansion modules 211 and 221 each include two sub-output ports, fig. 2 is merely exemplary, and the port expansion module 211 or 221 may include a greater or lesser number of sub-output ports (e.g., one or three).
According to some embodiments, the port expansion modules 211 and 221 are configured to: in response to receiving the chip select signal from the controller 230, causing the input port of the port expansion module to be selected to receive the control signal from the controller 230; and outputting a voltage control signal corresponding to the control signal on the output port in response to receiving the control signal from the controller 230, wherein on each sub-output port, a sub-voltage control signal corresponding to the sub-output port is output.
According to some embodiments, the control signals received by the input port for the controller 230 include control signals corresponding to each sub-output port in the port expansion module, e.g., when the input port 2111 is selected, the control signals received by the input port for the controller 230 include control signals corresponding to the first sub-output port 2112a and the second sub-output port 2112 b.
According to some embodiments, the sub-output port of the port expansion module includes one or more pins, and the control signal corresponding to the sub-output port includes information for controlling the output of each of the sub-output ports, e.g., each bit of the control signal corresponding to the sub-output port indicates the output of the corresponding pin of the sub-output port (e.g., the bit of the control signal is high, indicating that the corresponding pin output should be high, and the bit of the control signal is low, indicating that the corresponding pin output should be low).
According to some embodiments, each voltage regulator includes a control signal port and a supply voltage port, wherein for each voltage regulator the control signal port of that voltage regulator is connected to a corresponding sub-output port of the output ports of the port expansion module. As shown in fig. 2, the control signal port 2121 of the first voltage regulator 212 and the control signal port 2131 of the second voltage regulator 213 are connected to the sub-output ports 2112a and 2112b of the first port expansion module 211, respectively, the control signal port 2221 of the third voltage regulator 222 is connected to the sub-output port 2212a of the second port expansion module 221, and the voltage regulators 212, 213, 222 have power supply voltage ports 2122, 2132, and 2222, respectively.
According to some embodiments, the voltage regulators 212, 213, and 222 are configured to: in response to receiving the sub-voltage control signal from the corresponding sub-output port of the port expansion module, a supply voltage corresponding to the sub-voltage control signal is output on the supply voltage port.
According to some embodiments, the control signal port of the voltage regulator comprises at least one control signal pin, the sub-output ports of the port expansion module comprise at least one output pin, wherein each of the plurality of control signal pins is connected to a corresponding output pin of a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is further configured to: in response to a voltage on at least one control signal pin of the control signal port being in a selected state, a voltage corresponding to the at least one control signal pin is output on the supply voltage port. According to some embodiments, if the voltage on the control signal pin is high, the voltage on the pin is in a selected state, and if the voltage on the control signal pin is low, the voltage on the pin is in an unselected state. According to other embodiments, the voltage on the control signal pin is low, the voltage on the pin is in a selected state, and the voltage on the control signal pin is high, the voltage on the pin is in an unselected state.
According to some embodiments, each control signal pin of the control signal port corresponds to a voltage control value, and the voltage value output by the voltage regulator on the supply voltage port is the sum of the voltage control value and the reference voltage value corresponding to all pins on which the voltage is in the selected state. For example, if the voltages on pins 0 and 6 of the control signal port are in the selected state, pin 0 of the control signal port corresponds to 50mV, pin 6 corresponds to 1.6V, and the reference voltage value is 0.5V, then the voltage output on the supply voltage port is (0.05+1.6+0.5) ═ 2.15V.
In the voltage regulating circuit according to the present invention, the single controller controls the plurality of voltage regulating modules, and specifically, the single controller controls the voltage control signal output by the port expansion module in the plurality of voltage regulating modules, so as to control the voltage value of the power voltage output by the voltage regulator in the plurality of voltage regulating modules, thereby implementing software regulation of multiple power voltages and avoiding replacement of hardware devices in the circuit.
According to some embodiments, the input port is connected to a control port of the controller by a control bus, the control bus is a serial communication bus, and the input port of the port expansion module is a serial communication port.
FIG. 3 shows a schematic diagram of a voltage regulation circuit 300 according to an embodiment of the utility model.
Similar to that described with reference to fig. 2, the voltage regulation circuit 300 includes a first voltage regulation module 310 and a second voltage regulation module 320, wherein the first voltage regulation module 310 includes a first port extension module 311, a first voltage regulator 312, and a second voltage regulator 313, and the second voltage regulation module 320 includes a second port extension module 321 and a third voltage regulator 322. According to some embodiments, the voltage regulation circuit 300 may be the voltage regulation circuit 200 described with reference to fig. 2.
According to some embodiments, the input port of the port expansion module comprises a signal pin, wherein the signal pin of the input port of the port expansion module is connected to a signal pin of the control port of the controller. As shown in fig. 3, the signal pin SDA of the input port 3111 of the first port expansion module 3111And the signal pin SDA of the input port 3211 of the second port expansion module 3212Signal pin SDA connected to control port 331 of controller 3300。
According to some embodiments, the port expansion module is configured to: and receiving a chip selection signal or a control signal from a signal pin of a control port of the controller through a signal pin of the input port, wherein the chip selection signal comprises an address value of the port expansion module. For example, in the example shown in fig. 3, when the controller 330 selects the first port expansion module 311, the input port 3111 of the first port expansion module 311 is driven from the signal pin SDA0Receiving the chip select signal including the address value of the first port expansion module 311, the input port 3111 of the first port expansion module 311 is selected to continue from the signal pin SDA0Receiving a control signal; of the second port expansion module 321Input port 3211 is connected from signal pin SDA0When a chip select signal including an address value of the first port expansion module 321 is received, the input port 3211 of the second port expansion module 321 is not selected, and the signal pin SDA is not selected0A control signal is received.
According to some embodiments, the chip select signal includes a write indication in addition to the address value of the port expansion module to indicate to the controller that data is to be written to the port expansion module, e.g., the first seven bits of the chip select signal are set to the address value of the port expansion module to be selected, and the eighth bit of the chip select signal is set to the write indication (e.g., the bit is set to "1").
According to some embodiments, after receiving a chip select signal from a signal pin of a control port, the signal pin of the input module of the port expansion module sends an acknowledgement signal to the control port of the controller to inform the controller that the controller can continue to send control signals to the port expansion module.
According to some embodiments, the input port of the port expansion module further comprises a clock pin, wherein the clock pin of the input port of the port expansion module is connected to the clock pin of the control port of the controller. As shown in FIG. 3, the clock pin SCL of the input port 3111 of the first port expansion module 3111And the clock pin SCL of the input port 3211 of the second port expansion module 3212Clock pin SCL connected to control port 331 of controller 3300To receive a clock signal from the control port 331.
According to some embodiments, a supply voltage port of a voltage regulator in a voltage regulation circuit is connected to one or more power consuming modules. As shown in fig. 3, the power supply voltage port 3122 of the first voltage regulator 312 is connected to the first power supply port 341 of the power consuming module 340, the power supply voltage port 3132 of the second voltage regulator 313 is connected to the second power supply port 342 of the power consuming module 340, and the power supply voltage port 3222 of the third voltage regulator 322 is connected to the third power supply port 343 of the power consuming module 340, thereby providing multiple power supply voltages to the power consuming module 340. It should be understood that fig. 3 is merely exemplary, and the supply voltage port of the voltage regulator in the voltage regulation circuit may also be connected to multiple power consuming modules.
According to some embodiments, the control bus is an integrated circuit bus (I2C) bus or a Two-wire Serial Interface (TWI) bus, and the input port of the port expansion module is an I2C communication port or a TWI communication port.
According to some embodiments, when the control bus is an I2C bus, the controller is an I2C master and the port expansion module is an I2C slave, and when the control bus is a TWI bus, the controller is a TWI master and the port expansion module is a TWI slave.
According to some embodiments, the clock pin of the input module of the control port and the port expansion module of the controller is a clock SCL pin of an I2C or TWI protocol, and the signal pin of the input module of the control port and the port expansion module of the controller is an SDA data pin of an I2C or TWI protocol.
According to some embodiments, the port expansion module is a TCA9535 chip and the voltage regulator is a TPS7a7200 chip. According to further embodiments, the port expansion module and the voltage regulator may be other types of chips having the same function, or may be circuit modules having the same function implemented by integrated circuits and/or discrete components.
According to some embodiments, the port expansion module further comprises: an address configuration port, wherein the port expansion module is further configured to: the address value of the port expansion module is configured via the address configuration interface.
FIG. 4 shows a schematic diagram of a port expansion module 400 according to an embodiment of the utility model. According to some embodiments, the port expansion module 400 may be the first port expansion module 311, the second port expansion module 321 described with reference to fig. 3.
As shown in fig. 4, the port expansion module 400 includes an input port 401, an output port 402, and an address configuration port 403, wherein the output port 402 includes a first sub-output port 402a and a second sub-output port 402 b.
According to some embodiments, the address configuration port comprises a plurality of address configuration pins A0-A2Wherein, by combining the respective addressesConfiguration pin A0-A2Connect to high or low to configure the address of the port expansion module 400. For example, address configuration pin A0-A2When all the ports are grounded, the address of the port expansion module 400 is "0100000", where "0100" is a fixed address value and "000" is a configured address value; when the address configures pin A0Connected to a high level, and address configuration pin A1、A2Connected to the low level, the address of the port expansion module 400 is "0100001", where "0100" is a fixed address value and "001" is a configured address value.
FIG. 5 shows a schematic diagram of a voltage regulation circuit 500 according to an embodiment of the utility model.
Similar to that described with reference to fig. 2, the voltage regulation circuit 500 includes a first voltage regulation module 510 and a second voltage regulation module 520, wherein the first voltage regulation module 510 includes a first port extension module 511, a first voltage regulator 512 and a second voltage regulator 513, and the second voltage regulation module 520 includes a second port extension module 521 and a third voltage regulator 522. According to some embodiments, the voltage regulation circuit 500 may be the voltage regulation circuit 200 described with reference to fig. 2.
According to some embodiments, the input port of the port expansion module includes a signal pin and a chip select pin, wherein the signal pin of the input port of the port expansion module is connected to the signal pin of the control port of the controller, and the chip select pin of the input port of the port expansion module is connected to the corresponding chip select pin of the control port of the controller.
As shown in FIG. 5, the signal pin DA of the input port 5111 of the first port extension module 5111And the signal pin DA of the input port 5211 of the second port expansion module 5212Signal pin DA connected to control port 531 of controller 5300Chip select pin CS of input port 5111 of first port extension module 5111First chip select pin CS connected to control port 531 of controller 53001Chip select pin CS of input port 5211 of the second port extension module 5212A second chip select pin C connected to a control port 531 of the controller 530S02。
According to some embodiments, the port expansion module is configured to: receiving a chip selection signal from a corresponding chip selection pin of a control port of the controller through a chip selection pin of the input port; and receiving a control signal from a signal pin of a control port of the controller via a signal pin of the input port in response to receiving a chip select signal from a corresponding chip select pin of the control port of the controller. According to some embodiments, when a certain port expansion module is selected by the controller, the chip selection pin of the controller corresponding to the port expansion module outputs a chip selection signal, and the chip selection pin of the controller corresponding to other port expansion modules outputs a disable signal.
As shown in FIG. 5, when the first port extension module 511 is selected by the controller 530, the first chip select pin CS of the control port 531 of the controller 53001Outputting the chip select signal such that the input port 5111 of the first port expansion module 511 is selected to pass through the signal pin DA of the input port 5111 of the first port expansion module 5111Signal pin DA from control port0Receives data and controls the second chip select pin CS of the port 531 of the controller 53002The chip select signal is not output (e.g., the disable signal is output), so that the input port 5211 of the second port expansion module 521 is not selected, and the signal pin DA of the control port is not selected0Data is received.
According to some embodiments, chip select pin CS of controller 53001And CS02The output chip select signal is a high level signal, and the chip select pin CS of the controller 53001And CS02The output disable signal is a low level signal. According to other embodiments, chip select pin CS of controller 53001And CS02The output chip select signal is a low level signal, and the chip select pin CS of the controller 53001And CS02The output disable signal is a high level signal.
According to some embodiments, the input port of the port expansion module further comprises a clock pin, wherein the clock pin of the input port of the port expansion module is connected to the clock pin of the control port of the controller. As shown in the figure5, clock pin CLK of the input port 5111 of the first port extension module 5111And the clock pin CLK of the input port 5211 of the second port extension module 5212Clock pin CLK connected to control port 531 of controller 5300To receive a clock signal from the control port 531.
According to some embodiments, the control bus is a Serial Peripheral Interface (SPI) bus and the input port of the port expansion module is an SPI communication port.
According to some embodiments, the controller is an SPI master and the port expansion module is an SPI slave. According to some embodiments, Chip Select pins of the control port of the controller and the Input port of the port control module are Chip Select (CS) pins of the SPI communication protocol, Clock pins of the control port of the controller and the Input port of the port control module are Clock (SCLK) pins of the SPI communication protocol, and signal pins of the control port of the controller and the Input port of the port control module are Slave Input Master Output (MOSI) pins of the SPI communication protocol.
There is also provided, in accordance with an exemplary embodiment of the present disclosure, a voltage regulating device, including: a controller including a control port; and a voltage regulating circuit (e.g., voltage regulating circuit 200, 300, or 500) according to the present invention.
There is also provided, in accordance with an exemplary embodiment of the present disclosure, an electronic device, including: a voltage regulating device according to the present invention; and one or more power consuming modules, wherein each power consuming module is connected to a supply voltage port of a corresponding one of the voltage regulating devices to receive a supply voltage from the corresponding voltage regulator.
Although embodiments or examples of the present invention have been described with reference to the accompanying drawings, it is to be understood that the methods, systems, and apparatus described above are merely exemplary embodiments or examples and that the scope of the utility model is not limited by these embodiments or examples, but only by the claims as issued and their equivalents. Various elements in the embodiments or examples may be omitted or may be replaced with equivalents thereof. Further, the steps may be performed in an order different from that described in the present invention. Further, various elements in the embodiments or examples may be combined in various ways. It is important that as technology evolves, many of the elements described herein may be replaced with equivalent elements that appear after the present invention.
Claims (17)
1. A voltage regulation circuit comprising a plurality of voltage regulation modules, wherein each voltage regulation module comprises:
a port expansion module comprising an input port and an output port, the output port comprising at least one sub-output port, the input port connected to a controller, wherein the port expansion module is configured to:
in response to receiving a chip select signal from the controller, causing an input port of the port expansion module to be selected to receive a control signal from the controller; and
in response to receiving a control signal from the controller, outputting a voltage control signal corresponding to the control signal on the output port, wherein on each sub-output port, a sub-voltage control signal corresponding to the sub-output port is output;
at least one voltage regulator, each voltage regulator comprising a control signal port and a supply voltage port, wherein, for each voltage regulator, the control signal port of that voltage regulator is connected to a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is configured to: in response to receiving a sub-voltage control signal from the corresponding sub-output port of the port expansion module, outputting a supply voltage corresponding to the sub-voltage control signal on the supply voltage port.
2. The voltage regulation circuit of claim 1, wherein the input port is connected to a control port of the controller by a control bus, the control bus is a serial communication bus, and the input port of the port expansion module is a serial communication port.
3. The voltage regulation circuit of claim 2, wherein the input port of the port expansion module comprises a signal pin, wherein the signal pin of the input port of the port expansion module is connected to a signal pin of a control port of the controller.
4. The voltage regulation circuit of claim 3, wherein the port expansion module is configured to: receiving a chip select signal or a control signal from a signal pin of a control port of the controller via a signal pin of the input port,
wherein the chip select signal includes an address value of the port expansion module.
5. The voltage regulation circuit of claim 4, wherein the port expansion module further comprises: an address configuration port, wherein the port expansion module is further configured to: configuring, via the address configuration interface, an address value of the port expansion module.
6. The voltage regulation circuit of any one of claims 2-5, wherein the control bus is an I2C bus or a TWI bus, and the input port of the port expansion module is an I2C communication port or a TWI communication port.
7. The voltage regulation circuit of claim 6, wherein when the control bus is an I2C bus, the controller is an I2C master, the port expansion module is an I2C slave, and,
when the control bus is a TWI bus, the controller is a TWI host, and the port expansion module is a TWI slave.
8. The voltage regulation circuit of any one of claims 1-5, wherein the port expansion module is a TCA9535 chip and the voltage regulator is a TPS7A7200 chip.
9. The voltage regulation circuit of claim 2, wherein the input port of the port expansion module comprises a signal pin and a chip select pin, wherein the signal pin of the input port of the port expansion module is connected to the signal pin of the control port of the controller, and the chip select pin of the input port of the port expansion module is connected to the corresponding chip select pin of the control port of the controller.
10. The voltage regulation circuit of claim 9, wherein the port expansion module is configured to:
receiving a chip selection signal from a corresponding chip selection pin of a control port of the controller via a chip selection pin of the input port; and is
Receiving a control signal from a signal pin of a control port of the controller via a signal pin of the input port in response to receiving a chip select signal from a corresponding chip select pin of the control port of the controller.
11. The voltage regulation circuit of any one of claims 9-10, wherein the control bus is an SPI bus and the input port of the port expansion module is an SPI communication port.
12. The voltage regulation circuit of claim 11, wherein the controller is an SPI master and the port expansion module is an SPI slave.
13. The voltage regulation circuit of any one of claims 1-5 and 9-10, wherein the input port of the port expansion module further comprises a clock pin, wherein the clock pin of the input port of the port expansion module is connected to the clock pin of the control port of the controller.
14. The voltage regulation circuit of any one of claims 1-5 and 9-10, wherein a control signal port of the voltage regulator comprises a plurality of control signal pins, a sub-output port of the output ports of the port expansion module comprises a plurality of output pins, wherein each of the plurality of control signal pins is connected to a corresponding output pin of a corresponding sub-output port of the output ports of the port expansion module, and the voltage regulator is further configured to: and responding to the voltage on at least one control signal pin of the control signal port being in a selected state, and outputting the voltage corresponding to the at least one control signal pin on the power supply voltage port.
15. The voltage regulation circuit of any one of claims 1-5 and 9-10, wherein a supply voltage port of a voltage regulator in the voltage regulation circuit is connected to one or more powered modules.
16. A voltage regulation device comprising:
a controller comprising a control port; and
the voltage regulation circuit of any one of claims 1-15.
17. An electronic device, comprising:
the voltage regulation device of claim 16; and
one or more power consuming modules, wherein each power consuming module is connected to a supply voltage port of a corresponding one of the voltage regulating devices to receive a supply voltage from the corresponding voltage regulator.
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| CN202121976668.1U CN215987064U (en) | 2021-08-20 | 2021-08-20 | Voltage regulating circuit, device and electronic device |
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