Reconfigurable on time circuit for current mode control of buck converter
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Sep 16, 2016
filing date -
Sep 16, 2016
priority date (Note) -
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Abstract
An apparatus including an inductor coupled to a load circuit, a control circuit, and a driver circuit. The control circuit may be configured to select a first operating mode in response to a determination that a value of current flowing through the inductor is greater than a threshold, and to otherwise select a second operating mode. In the first operating mode, the driver circuit may be configured to source current to the load circuit through the inductor for a first duration, based on a comparison of a supply voltage level to a voltage level across the load circuit. In the second operating mode, the driver circuit may be configured to source current to the load circuit through the inductor at a number of time points. At each time point the current may be sourced for a second duration that is based on an allowable peak current flowing through the inductor.
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