Methods and apparatus to increase efficiency for wireless power transfer

    公开(公告)号:US10153661B2

    公开(公告)日:2018-12-11

    申请号:US15362563

    申请日:2016-11-28

    Abstract: Methods, apparatus, systems and articles of manufacture to efficiently transfer power wirelessly are disclosed. An example apparatus includes a feedback loop to when a second current value is greater than a first current value, change a direction value, the second current value being obtained after the first current value; when the second current value is less than the first current value, maintain the direction value; and a summer to when the direction value corresponds to a first direction value, increase a reference signal by a step size; and when the direction value corresponds to a second direction value different than the first direction value, decrease the reference signal by the step size.

    Dynamic biasing circuits for low drop out (LDO) regulators

    公开(公告)号:US09710002B2

    公开(公告)日:2017-07-18

    申请号:US14930906

    申请日:2015-11-03

    CPC classification number: G05F1/56 G05F1/465 G05F1/575

    Abstract: Dynamic biasing circuits for low drop out (LDO) regulators are described. In some embodiments, an electronic circuit may include a low drop out (LDO) regulator; and a biasing circuit coupled to the LDO regulator, the biasing circuit configured to: monitor a first electrical current and a second electrical current; select a greater of the first or second electrical currents; and provide the selected electrical current to the LDO regulator. In other embodiments, a method may include: providing a digital core and a low drop out (LDO) regulator coupled to the digital core, wherein the digital core is configured to operate in an active mode and in a standby mode; monitoring, via a current selector circuit coupled to the LDO regulator, a first current and a second current; selecting a greater of the first or second electrical currents; and providing the selected current as a biasing current to the LDO regulator.

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