CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Applications No. 10-2019-0129197, filed on Oct. 17, 2019 and 10-2020-0050362, filed on Apr. 24, 2020, in the Korean Intellectual Property Office, the entire disclosures of which are incorporated herein by reference.

BACKGROUND

1. Field

The present disclosure relates generally to an electronic device including a resonant charging circuit.

2. Description of Related Art

An electronic device such as a smartphone or a tablet personal computer (PC) may operate using power provided from a battery. A power management module (e.g., a power management integrated circuit (IC)(PMIC)) may transfer power provided from the battery to various components (e.g., a processor, a memory, or a communication chip) inside the electronic device.

The battery inside the electronic device may be charged through an external power source. Recently, various charging methods, wired or wireless, have been applied for fast charging. Among fast charging methods, a direct charging technology may allow an external power supply device (e.g., a power adapter) to control a constant voltage or a constant current for the battery inside the electronic device, and may simplify a charging circuit inside the electronic device. In addition, the direct charging technology may charge the battery with a high current while minimizing heat generation in the electronic device.

A conventional electronic device may support charging by the direct charging technology using a switched capacitor voltage divider (SCVD) circuit. Unlike general switching converters, the SCVD circuit may achieve high efficiency of about 96% or more to reduce heat generation of the electronic device, but may have a fixed voltage conversion ratio depending on the circuit configuration. Accordingly, a compatibility with various types of power devices or charging devices may be limited.

For example, when the SCVD circuit is connected to a legacy power adapter that supplies a fixed voltage of about 5 V or 9 V, because the SCVD circuit cannot perform the charging operation, a separate switching charger may have to be installed. As a result, a space for mounting components inside the electronic device may be reduced, and a cost of the electronic device may increase due to additional components.

In addition, to cope with both a wired power supply device and a wireless power supply device, a plurality of SCVD circuits and a plurality of switching chargers have to be installed, which further reduces the space for mounting components inside the electronic device.

SUMMARY

The present disclosure has been made to address at least the disadvantages described above and to provide at least the advantages described below.

In accordance with an aspect of the present disclosure, an electronic device is provided. The electronic device includes a battery and a power management module electrically connected to the battery and configured to manage a charging or a discharging of the battery. The power management module includes a first charging circuit configured to include a first switch group, a first capacitor, and a first inductor, a second charging circuit configured to include a second switch group, a second capacitor, and a second inductor, and a power path distributor configured to distribute power from a first external power supply device or a second external power supply device to the first charging circuit or the second charging circuit. The power management module is configured to identify a connection between the power path distributor and one of the first external power supply device or the second external power supply device, determine a type of the connected power supply device, when the type of the connected power supply device is a first type, allow the first charging circuit and the second charging circuit to operate in a first mode that allows the first charging circuit and the second charging circuit to each have a fixed voltage conversion ratio such that the battery is charged, and when the type of the connected power supply device is a second type, allow the first charging circuit and the second charging circuit to operate in a second mode that allows a voltage conversion ratio to be changed corresponding to a charging ratio of the battery such that the battery is charged.

