Realtek Semiconductor Inc.

Hung-Hsuan Cheng

Shih-Chieh Chen

Yen-Ting Lin

Yi-Lin Li

Liang-Hui Li

Chun-Yu Luo

Wen-hau Yang

Cheng-Lin Huang

Chun-yu Luo

A single-inductor multi-output (SIMO) DC-DC buck converter includes a first switch, a second switch, a third switch, a fourth switch, an inductor, an error amplifier circuit, an inductor current ripple emulator circuit, a comparison circuit, and a control circuit. The error amplifier circuit generates a first error signal and a second error signal according to the output voltages of the SIMO DC-DC buck converter. The inductor current ripple emulator circuit generates a sensed voltage according to a first terminal voltage and a second terminal voltage of the inductor. The comparison circuit generates a first comparison result and a second comparison result according to the first error signal, the second error signal, and the sensed voltage. The control circuit generates first to fourth control signals for respectively controlling the first to fourth switches according to the first comparison result and the second comparison result.

Single-inductor multi-output (SIMO) direct current to direct current (DC-DC) buck converter

A charging system includes: an input voltage supply circuit; a control circuit coupled to the input voltage supply circuit, configured to control the input voltage supply circuit to generate an input voltage according to a battery voltage of a target battery; and a charging circuit, coupled to the control circuit, configured to receive the input voltage and to provide a charging current to charge the target battery. The input voltage is generated according to a function that takes the battery voltage as a parameter. The input voltage is positively correlated with the battery voltage, and is greater than the battery voltage.

Charging system with low power consumption

Growing community of inventors

Chiayi, Taiwan

Hung-Hsuan Cheng