Switching signal generating apparatus and method
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United States of America Patent
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Mar 12, 2019
Grant Date -
Jan 24, 2019
app pub date -
Jul 24, 2017
filing date -
Jul 24, 2017
priority date (Note) -
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Abstract
Methods and apparatus are provided for a high current control strategy and a low current control strategy using fixed threshold values and variable threshold values. An electrical quantity related to an electrical current which is to be switched is received on an input. The electrical quantity related to the electrical current is compared with a predefined first fixed threshold value in a first comparator for determining a first logical state. The electrical quantity is compared with a first variable threshold value in a second comparator for determining a second logical state. The electrical current is switched between an ON state and an OFF state in response to a switching signal on an output terminal when the electrical quantity of the electrical current meets the first variable threshold value. The first logical state, the second logical state and the switching signal provided at the output terminal vary the first variable threshold value.
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