POWER SUPPLY CIRCUIT AND SEMICONDUCTOR DEVICE EQUIPPED WITH SAID POWER SUPPLY CIRCUIT

WIPO Patent Application WO/2020/089725

A1

Provided is a power supply circuit having a novel configuration. The power supply circuit has: a power conversion circuit for supplying power to a load; a current detection circuit for generating a first signal having information of the current flowing through the load; a voltage detection circuit for generating a second signal having information of a voltage applied to the load; a digital filter; a digital/analog conversion circuit for receiving a signal output from the digital filter; and a sample/hold circuit for holding a signal output from the digital/analog conversion circuit. The power supply circuit also has: a correction circuit for generating a third signal obtained by correcting the second signal; a selection circuit for selecting the first signal or the third signal; an output circuit for generating, in accordance with the signal selected by the selection circuit, an output signal for controlling the power conversion circuit; and a control signal generation circuit for controlling switching between a first operation in which the output signal based on the first signal and the third signal are generated and a second operation in which the output signal based on the third signal is generated.

TAKAHASHI KEI (JP)
AOKI TAKESHI (JP)

PCT/IB2019/058933

May 07, 2020

October 21, 2019

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SEMICONDUCTOR ENERGY LAB (JP)

H02M3/155; H01L29/786; H02M3/157

JP2015180178A	2015-10-08
JP2005276289A	2005-10-06
JPH10116423A	1998-05-06
JP2014203764A	2014-10-27
JP2013178495A	2013-09-09
JP2011188477A	2011-09-22

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