Invention Grant
- Patent Title: Low output impedance voltage reference circuit
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Application No.: US17655152Application Date: 2022-03-16
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Publication No.: US11983026B2Publication Date: 2024-05-14
- Inventor: Matthias Eberlein
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Dean M. Munyon
- Main IPC: G05F3/30
- IPC: G05F3/30 ; G05F1/56

Abstract:
A voltage reference circuit included in a computer system includes two bipolar devices with two different current densities which are used to generate two base-emitter voltages, which are scaled using divider circuits. The voltage reference circuit also includes a feedback circuit that generates a reference voltage using the scaled base-emitter voltages and a feedback signal. The feedback signal is generated using the reference signal and combined with one of the scaled base-emitter voltages to compensate for variations in load current from the reference circuit.
Public/Granted literature
- US20230297127A1 Low Output Impedance Voltage Reference Circuit Public/Granted day:2023-09-21
Information query
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