- Patent Title: Voltage regulator with drive voltage dependent on reference voltage
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Application No.: US15901233Application Date: 2018-02-21
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Publication No.: US10248145B2Publication Date: 2019-04-02
- Inventor: Dan Ciomaga , Mihail Jefremow , Stephan Drebinger , Fabio Rigoni
- Applicant: Dialog Semiconductor (UK) Limited
- Applicant Address: GB London
- Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee Address: GB London
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Priority: DE102017202807 20170221
- Main IPC: G05F1/575
- IPC: G05F1/575 ; G05F1/46
Abstract:
A voltage regulator to provide a load current at an output node is presented. The voltage regulator has a pass transistor for providing the load current at the output node from an input node. The voltage regulator contains a driver stage to set a gate voltage at a gate of the pass transistor based on a drive voltage at a gate of a drive transistor. The voltage regulator has voltage regulation means to set the drive voltage in dependence of an indication of the output voltage at the output node and in dependence of a reference voltage for the output voltage. The driver stage has the drive transistor and a diode transistor, wherein the diode transistor forms a current mirror with the pass transistor. The driver stage has a current amplifier amplifies a drive current through the drive transistor to provide an amplified current through the diode transistor.
Public/Granted literature
- US20180239380A1 Voltage Regulator with Improved Driver Stage Public/Granted day:2018-08-23
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