Invention Grant
- Patent Title: Voltage-generating circuit and semiconductor device
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Application No.: US16891734Application Date: 2020-06-03
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Publication No.: US11074983B2Publication Date: 2021-07-27
- Inventor: Masafumi Nakatani
- Applicant: Winbond Electronics Corp.
- Applicant Address: TW Taichung
- Assignee: Winbond Electronics Corp.
- Current Assignee: Winbond Electronics Corp.
- Current Assignee Address: TW Taichung
- Agency: Birch, Stewart, Kolasch & Birch LLP
- Priority: JPJP2019-105039 20190605
- Main IPC: G05F1/00
- IPC: G05F1/00 ; G11C16/30 ; H02M3/07 ; G11C16/08

Abstract:
What is provided is a voltage-generating circuit that uses dynamic reference voltage to accurately control the step-up of a generated voltage. A voltage-generating circuit 100 of the invention includes a charge pump 110 outputting voltage Vpump, a regulator 120, and a controlling circuit 140. The regulator 120 includes a comparator 122 and a comparator 132. The comparator 122 compares voltage Vdivide generated by the charge pump 110 with a reference voltage Vref, and outputs a comparison result CMP_OUT. The comparator 132 compares voltage Vdivide2 generated by the charge pump 110 with a reference voltage VrefRRC with a controlled rising speed, and outputs a comparison result CMP2_OUT. The controlling circuit 140 controls the charge pump 110 based on CMP_OUT and CMP2_OUT.
Information query
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