Invention Grant
- Patent Title: Charge pump cell with improved latch-up immunity and charge pumps including the same, and related systems, methods and devices
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Application No.: US17318596Application Date: 2021-05-12
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Publication No.: US11552559B2Publication Date: 2023-01-10
- Inventor: Lei Zou , Torbjoern Loevseth Finnoey
- Applicant: Microchip Technology Incorporated
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: TraskBritt
- Main IPC: H02M3/07
- IPC: H02M3/07

Abstract:
A charge pump cell for a charge pump is disclosed that may exhibit improved latch-up immunity. A circuit may be arranged at the charge pump cell to apply a voltage to a bulk contact of a charge transfer transistor of such a charge pump cell at least partially responsive to a relationship between a voltage at a first terminal of the charge transfer transistor and a voltage at a second terminal of the charge transfer transistor. A charge pump including one or more such charge pump cells may include a control loop that is configured to control a pumping signal at least partially responsive to a state of an output voltage of the charge pump.
Public/Granted literature
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