Invention Grant
- Patent Title: Load bypass slew control techniques
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Application No.: US16227988Application Date: 2018-12-20
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Publication No.: US10554204B1Publication Date: 2020-02-04
- Inventor: Eric Stephen Young , Xin Qi
- Applicant: Analog Devices, Inc.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H05B33/08 ; G05F3/26 ; H03K7/08

Abstract:
Techniques for an integrated slew-rate control circuit are provided. In certain examples, an adjustable, integrated slew-rate control circuit for a bypass transistor can provide three decades of adjustability. In an example, a slew-rate control circuit can include a load bypass transistor, a slew-rate control capacitor, electrically coupled between a conduction node of the load bypass transistor and a control node of the load bypass transistor, and a current mirror circuit. The current mirror circuit can include a sense transistor electrically coupled in series with the slew-rate control capacitor and the control node, and a mirror transistor electrically coupled between a power supply and the control node, to selectively provide, to or from the control node, a shunt current that bypasses the slew-rate control capacitor to limit a slew rate of a voltage at the conduction node.
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