APPARATUS AND METHOD OF PULSE WIDTH MODULATION WITH FEEDBACK CONTROL
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United States of America Patent
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Issued Date -
Apr 14, 2016
app pub date -
Oct 9, 2014
filing date -
Oct 9, 2014
priority date (Note) -
Abandoned
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Abstract
According to one embodiment an apparatus of pulse width modulation with feedback control, adapted to drive an external load, the apparatus comprising a pulse width modulator, an adjustment encoder, a power driver, and a controller, wherein the pulse width modulator transfers a pulse code modulation code into a pulse width modulation code, the adjustment encoder transfers the pulse width modulation code into an upper-driven signal and a lower-driven signal, the power driver receives the upper-driven signal and the lower-driven signal to drive the external load, the controller measures the voltage of the external load to generate a control signal according to the upper-driven signal and the lower-driven signal, and transmits the control signal to the adjustment encoder to adjust the upper-driven signal and the lower-driven signal.
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