Invention Grant
- Patent Title: Self-heating trim techniques for improved LDO accuracy over load and temperature
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Application No.: US14482228Application Date: 2014-09-10
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Publication No.: US09703306B2Publication Date: 2017-07-11
- Inventor: Brandon Day , Mark Szostkiewicz
- 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: G01R31/02
- IPC: G01R31/02 ; G05F1/625

Abstract:
In one example, a method for compensating for a temperature effect during operation of a voltage regulator circuit includes applying a load current at an output of the voltage regulator circuit, measuring a first output voltage at the output, measuring a reference current or voltage, increasing the load current, measuring a change in the reference current or voltage corresponding to the increased load current, measuring a second output voltage when the measured change in the reference current exceeds a threshold, and determining a temperature coefficient (TC) value based on the measured second output voltage.
Public/Granted literature
- US20160070280A1 SELF-HEATING TRIM TECHNIQUES FOR IMPROVED LDO ACCURACY OVER LOAD AND TEMPERATURE Public/Granted day:2016-03-10
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