The connection establishment circuit 170 may include a power delivery integrated circuit (PDIC) and/or a configuration channel integrated circuit (CCIC). In the following description, the connection establishment circuit 170 may be referred to as the CCIC 170.

According to an embodiment, the electronic device 100 may include at least one charger 180 or 190 and/or a battery (not shown) to receive or supply power. For example, the electronic device 100 may include the first charger 190 associated with the first input/output interface 140 and the second charger 180 associated with the second input/output interface 160.

According to an embodiment, the second input/output interface 160 may be electrically connected to the second charger 180. The power pin of the second input/output interface 160 may be connected to the second charger 180. The electronic device 100 may supply power to the second input/output interface 160 and/or an external device connected to the second input/output interface 160 through the power pin. The charger 180 may perform the function of a booster. For example, the charger 180 may supply VBUS power. In addition, the charger 180 may perform various operations described herein. For example, the second charger 180 may provide or receive a VBUS when connecting a travel adapter (TA) or an on-the-go (OTG) connector to the second input/output interface 160. The power pin may be, for example, a VBUS pin. Hereinafter, the charger 180 may be referred to as a VBUS booster.