Realtek Semiconductor Inc.

Chunghwa Picture Tubes, Ltd.

Yao-Yi Yang

Ke-Horng Chen

Chi-Neng Mo

Chia-Lin Liu

Yu-Huei Lee

Ling Li

Chi-Lin Chen

Shih-Jung Wang

Ying Hsi Lin

The present invention relates to a Single Inductor Double Output (SIDO) power converter, which includes a power-stage circuit, a current detector, a slope compensation device, at least two error amplifiers, a comparing unit, a mode exchange circuit, a logical device and a driver. The SIDO current converter achieves an optimal SIDO power converting efficiency by controlling a full-current mode. Furthermore, different power transferring modes, under a variety of loadings, are used to address the issue of cross regulation and at meanwhile solving output voltage ripples and transient response to ensure the SIDO power converter a more flexible usage environment and better output performance.

SIDO power converter and driving method thereof

A voltage converter for use in a backlight module stores energy of an input voltage using an inductor and outputs a plurality of output voltages accordingly. The charging path of the inductor is controlled according to the first output voltage so that the first output voltage can be stabilized. The discharging paths from the inductor to other output voltages are controlled according to the differences between other output voltages and the first output voltage so that other output voltages can also be stabilized.

Voltage converter and driving method for use in a backlight module

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Changhua County, Taiwan

Yao-Yi Yang