Output current measurement for low dropout regulator
AssigneeRenesas Design (UK) Limited
InventorJulian Tyrrell
Life of this patent
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Abstract
A current measurement system for a digital low dropout regulator (LDO) for receiving a reference voltage and generating an output voltage, the output voltage of the digital LDO being dependent on a first DAC code signal, the current measurement system comprising a current determination unit configured to receive the first DAC code signal, and generate an output current signal using the first DAC code signal.
Claims19
A current measurement system for a digital low dropout regulator (LDO) for receiving a reference voltage and generating an output voltage, the output voltage of the digital LDO being dependent on a first DAC code signal, the current measurement system comprising:
- a current determination unit configured to:
- receive the first DAC code signal;
- calculating an output current using the first DAC code signal;
- and
- generate an output current signal using the calculated output current.
A voltage regulator system comprising:
- a digital low dropout regulator (LDO) for receiving a reference voltage and generating an output voltage;
- and
- a current measurement system comprising:
- a current determination unit configured to:
- receive a first DAC code signal, the output voltage of the digital LDO being dependent on the first DAC code signal;
- calculate an output current using the first DAC code signal;
- and
- generate an output current signal using the calculated output current.
A method of measuring a current from a digital low dropout regulator (LDO) for receiving a reference voltage and generating an output voltage, the output voltage of the digital LDO being dependent on a first DAC code signal, the method comprising:
- receiving the first DAC code signal at a current determination unit;
- calculating an output current using the first DAC code signal;
- and
- generating an output current signal using the first DAC code signal, using the calculated output current.
Dependencies are inferred from the claim text.