Semiconductor device

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control

Reexamination Certificate

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C327S175000

Reexamination Certificate

active

07973580

ABSTRACT:
A semiconductor device includes: a voltage-control-type clock generation circuit having a plurality of stages of first delay elements and whose oscillation frequency is controlled according to a control voltage applied to the first delay elements; a delay circuit having a plurality of stages of second delay elements connected serially; and a selection circuit selecting one from pulse signals output by the plurality of stages of respective second delay elements. The first delay elements and the second delay elements have a same structure formed on a same semiconductor substrate, and a delay amount of the second delay elements is adjusted according to the control voltage.

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Yang Zhang, et al., “Current Sharing in Digitally Controlled Masterless Multi-Phase DC-DC Converters”, Power Electronics Specialists Conference, 2005, PESC '05, IEEE 36tth, pp. 2722-2728.

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