Circuit, Power Supply Method, Electronic Device, and Computer Program Product

A method, comprising:

• when a first power is supplied to a first working circuit of an electronic device through a first power supply path, when a second power supply path of the electronic device and a third power supply path of the electronic device are disconnected, and in response to the electronic device meeting a first preset condition:
• connecting the second power supply path;
• and
• supplying a second power to the first working circuit through the first power supply path and the second power supply path;
• after the second power supply path is connected;
• disconnecting the first power supply path;
• and
• supplying a third power to the first working circuit through the second power supply path;
• and
• after the first power supply path is disconnected:
• connecting the third power supply path;
• disconnecting the second power supply path;
• and
• supplying a fourth power to the first working circuit through the third power supply path.

An electronic device, comprising:

• a battery;
• a first working circuit;
• a first power supply path electrically connected in series between the battery and the first working circuit and comprising a first switch configured to provide a first voltage of the battery for the first working circuit;
• a second power supply path electrically connected in series between the battery and the first working circuit and comprising:
• a first boost circuit configured to:
• be electrically connected to the battery;
• and
• perform, based on the first voltage, boost conversion to obtain a second voltage;
• and
• a first unidirectional conductive switch configured to:
• be electrically connected in series between the first boost circuit and the first working circuit, wherein a conduction direction of the first unidirectional conductive switch is from the first boost circuit to the first working circuit;
• and
• provide, in response to the second power supply path being connected, the second voltage to the first working circuit;
• a third power supply path configured electrically connected in series between the battery and the first working circuit and comprising:
• the first boost circuit;
• and
• a second switch electrically connected in parallel to the first unidirectional conductive switch and configured to provide the second voltage to the first working circuit, wherein the third power supply path is configured to supply, in response to the second switch being turned on, first power to the first working circuit;
• at least one memory configured to store instructions;
• and
• at least one processing circuit coupled to the at least one memory and configured to execute the instructions to:
• when second power is supplied to the first working circuit through the first power supply path, when the second power supply path and the third power supply path are disconnected, and in response to the electronic device meeting a first preset condition:
• connecting the second power supply path;
• and
• supplying third power to the first working circuit through the first power supply path and the second power supply path;
• after the second power supply path is connected:
• disconnecting the first power supply path;
• and
• supplying fourth power to the first working circuit through the second power supply path;
• and
• after the first power supply path is disconnected:
• connecting the third power supply path;
• disconnecting the second power supply path;
• and
• supplying the first power to the first working circuit through the third power supply path.