Samsung Electronics Co., Ltd.

Byung Chul Jeon

Dong Jin Keum

Kudo Ryotaro

Jin Sub Choi

Sang-Yong Park

Chan-Woo Park

Young Hoon Lee

Je Kook Kim

Min Shik Seok

A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.

Fuel gauge system for measuring the amount of current in battery and portable electronic device including the same

A digital buck-boost conversion circuit includes an analog-to-digital converter configured to convert an output voltage signal into a digital signal, a pulse period control block configured to output a pulse period control signal based on degrees of scattering at different frequencies of the digital signal, a pulse generation block configured to output a pulse based on the pulse period control signal, and a buck-boost converter configured to convert the pulse into the output voltage signal.

Digital buck-boost conversion circuit and method of operating the same

Growing community of inventors

Seongnam-si, South Korea

Byung Chul Jeon