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CN-122026592-A - Power supply control system, method and electronic equipment

CN122026592ACN 122026592 ACN122026592 ACN 122026592ACN-122026592-A

Abstract

The embodiment of the invention relates to the technical field of electronic circuits and discloses a power supply control system, a power supply control method and electronic equipment, wherein the power supply control system comprises a main control, a controllable power supply, a power supply control module and a peripheral circuit; the power control module receives an opening instruction or a closing instruction from the main control, controls the controllable power supply to start and supply power to the peripheral circuit when receiving the opening instruction, establishes a self-locking state to maintain the power supply, releases the self-locking state and turns off the controllable power supply when receiving the closing instruction, and maintains the opening or closing state of the controllable power supply before the power off when the main control is powered off. Therefore, the problem that the quick positioning and the reduction of power consumption cannot be achieved in the prior art is solved.

Inventors

  • LI FENG

Assignees

  • 芯讯通无线科技（上海）有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (10)

  1. 1. The power supply control system is characterized by comprising a main control, a controllable power supply, a power supply control module and a peripheral circuit; the output port of the main control is connected with the power control module, the power control module is connected with the enabling input port of the controllable power supply, and the power output port of the controllable power supply is connected with the power input port of the peripheral circuit; the power supply control module comprises a unidirectional conduction unit, a delay circuit, a contactless switch and a feedback resistor; The output port of the main control is connected to the unidirectional conduction unit through a first path, and the output end of the unidirectional conduction unit is connected to the enabling input port of the controllable power supply and is used for providing an initial driving signal for the enabling input port; the output port of the main control is connected to the input end of the delay circuit through a second path, and the output end of the delay circuit is connected to the base electrode of the contactless switch to control the on and off of the contactless switch; The emitter of the contactless switch is grounded, the collector of the contactless switch is connected to the enabling input port, and the contactless switch pulls down the voltage of the enabling input port of the controllable power supply when in a conducting state; The feedback resistor is connected between a power output port and the enabling input port of the controllable power supply, when the controllable power supply is started, the level of the enabling input port is maintained by the current flowing through the feedback resistor, and the output port of the main control and the enabling input port are in a high-impedance state; the power control module receives an opening instruction or a closing instruction from the main control, controls the controllable power supply to start and supply power to the peripheral circuit when receiving the opening instruction, establishes a self-locking state to maintain power supply, releases the self-locking state and turns off the controllable power supply when receiving the closing instruction, and maintains the self-locking state to maintain the opening or closing state of the controllable power supply before the main control is powered off when the main control is powered off.
  2. 2. The power control system of claim 1, wherein the on command is a high level pulse of a first duration output by the output port of the master and the off command is a high level pulse of a second duration output by the output port of the master, wherein the second duration is greater than the first duration.
  3. 3. The power control system of claim 1, wherein the unidirectional conduction unit includes a first resistor and a diode connected in series with each other, the output port of the master control being connected to the enable input port of the controllable power supply through the first resistor and diode, the diode being turned on when the unidirectional conduction unit receives a high level of the master control output, and the diode being turned off when the unidirectional conduction unit receives a low level of the master control output.
  4. 4. The power control system of claim 1, wherein the delay circuit comprises a second resistor and a capacitor, a connection node of the second resistor and the capacitor, a connection to a control terminal of the contactless switch, the contactless switch being turned on if a voltage value of the capacitor reaches a first threshold value.
  5. 5. The power control system of claim 1, wherein the contactless switch is an NPN transistor.
  6. 6. A power supply control method applied to the power supply control system according to any one of claims 1 to 5, characterized in that the method comprises: When power is required to be supplied to a peripheral circuit, an output port of the main control is controlled to output high-level pulses with first duration, and the duration of the high-level pulses with the first duration is smaller than a response threshold value of a delay circuit in a power control module so as to trigger the controllable power supply to start and establish a self-locking state; When the power supply of the peripheral circuit is required to be cut off, the port of the main control is controlled to output high-level pulses with second duration, and the duration of the high-level pulses with the second duration is larger than the response threshold value of the delay circuit in the power supply control module so as to trigger the controllable power supply to be cut off and release self-locking.
  7. 7. The method of claim 6, wherein the response threshold of the delay circuit is determined by a time constant of an RC network formed by the second resistor and the capacitor, and the duration of the continuous excitation period from when the contactless switch outputs the active level to when the voltage of the control terminal of the contactless switch rises to the on threshold is represented.
  8. 8. The method of claim 6, further comprising maintaining a power state of the peripheral circuit prior to shutdown while the master is shutdown: If the main control sends an opening instruction to the power control module before the main control is powered off, and the instruction is successfully executed, when the main control is powered off, an output port of the main control outputs an invalid level, the controllable power supply receives electric energy from a main power supply of the power control system, continuously maintains a self-locking state, and continuously obtains power for the peripheral circuit; When the main control is powered off, a power output port of the controllable power supply outputs a low level, and the peripheral circuit is completely unpowered after the main control is powered off.
  9. 9. The power control method of claim 8, wherein the on command is a high level pulse of a first duration output by the output port of the master control and the off command is a high level pulse of a second duration output by the output port of the master control, wherein the second duration is longer than the first duration.
  10. 10. An electronic device, at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor to perform the power control method of any of claims 6-9.

Description

Power supply control system, method and electronic equipment Technical Field The embodiment of the invention relates to the technical field of electronic circuits, in particular to a power supply control system, a power supply control method and electronic equipment, which are particularly suitable for peripheral circuit management in a 5G communication module. Background In the field of 5G communication, a communication module designed by RedCap (Reduced Capability, simplified version) is adopted, and because the master control of the communication module does not integrate Global Navigation Satellite System (GNSS) functions, positioning needs to be realized through an external or internal independent peripheral circuit. In order to achieve fast positioning (e.g. hot start) of a module after power-on, one existing solution is to configure an independent controllable power supply for the peripheral circuit and connect its input and enable pins directly to the main power supply input (VBAT) of the module. The scheme ensures that after the module system is shut down, as long as the VBAT is not powered off, the peripheral circuit can continuously supply power and maintain the positioning state information of the peripheral circuit, thereby realizing quick positioning. However, this scheme has a disadvantage in that the peripheral circuit continues to consume power even in a scene where a positioning function is not required, resulting in an increase in overall power consumption. In order to reduce power consumption, another existing scheme is to change the enabling pin of the controllable power supply to be controlled by a general purpose input output interface (GPIO) of a main control chip (such as a 5G main control). The GPIO can not maintain high level output after the module is powered off, the controllable power supply is turned off, the peripheral circuit is powered off, and the power supply is enabled through the GPIO only when the module is required to be positioned after the module is powered on. This approach saves power consumption during non-operation, but sacrifices the ability to quickly locate the module when it is powered on. Therefore, a GNSS power supply control scheme capable of being flexibly configured according to actual requirements and having both fast positioning capability and system power consumption optimization is lacking in the prior art. Disclosure of Invention The embodiment of the invention aims to provide a power supply control system, a power supply control method and electronic equipment, and solves the problems of high power consumption and low positioning speed existing in the prior art that an external or internal independent peripheral circuit is adopted for positioning. In order to solve the technical problems, the first aspect of the embodiment of the invention provides a power supply control system, which comprises a main control, a controllable power supply, a power supply control module and a peripheral circuit, wherein an output port of the main control is connected with the power supply control module, the power supply control module is connected with an enabling input port of the controllable power supply, a power supply output port of the controllable power supply is connected with a power supply input port of the peripheral circuit, the power supply control module receives an opening instruction or a closing instruction from the main control, controls the controllable power supply to start and supply power for the peripheral circuit when the opening instruction is received, establishes a self-locking state to maintain the power supply, releases the self-locking state and cuts off the controllable power supply when the main control is powered off, maintains the self-locking state to maintain the opening or closing state of the controllable power supply before the power supply is off, the power supply control module comprises a unidirectional conducting unit, a delay circuit, a contactless switch and a feedback resistor, the output port of the main control is connected to the unidirectional conducting unit through a first path, the unidirectional conducting unit is connected with the output port of the main control module, the unidirectional conducting unit is connected with a base electrode of the controllable power supply to enable the first input port of the non-contact, the signal is connected to the input port of the controllable power supply is connected to the first input port of the non-contact, the controllable power supply is connected to the input port of the zero-contact, and the output port is connected to the initial input port is connected to the input terminal through the zero-contact, and the output terminal is connected to the input terminal through the control switch when the control terminal is connected to the output through the control switch and has the input terminal through the control switch, the non-contact switch is connected between t