US 11,693,437 B1
Electronic device
Chih-Ming Chang, Taoyuan (TW)
Assigned to Qisda Corporation, Taoyuan (TW)
Filed by Qisda Corporation, Taoyuan (TW)
Filed on Apr. 7, 2022, as Appl. No. 17/715,206.
Claims priority of application No. 202210168127.9 (CN), filed on Feb. 23, 2022.
Int. Cl. G05F 1/56 (2006.01); H02M 3/155 (2006.01); H03K 3/037 (2006.01); H02M 1/36 (2007.01); B60R 25/40 (2013.01); B60L 53/20 (2019.01)
CPC G05F 1/56 (2013.01) [H02M 1/36 (2013.01); H02M 3/155 (2013.01); H03K 3/037 (2013.01); B60L 53/20 (2019.02); B60L 2210/10 (2013.01); B60R 25/40 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an internal battery;
a first converter, for converting an electrical power provided by the internal battery or an electrical power provided by an external power source into a first power signal;
a processor, operating in a ON-state or switching to a OFF-state according to the first power signal; and
a control circuit, for controlling the first converter to make the first converter selectively provide the first power signal to the processor, and the control circuit is configured to:
provide an enable signal to control the first converter, wherein when the enable signal has a high voltage level, the first converter provides the first power signal to the processor; and
when the external power source does not provide the electrical power and the processor enters a shut-down procedure, and a first predefined period elapses after the shut-down procedure is completed, lower the enable signal to a low voltage level, wherein when the shut-down procedure is completed, the processor switches to the OFF-state.