EQUIVALENT SERIES RESISTANCE COMPENSATION CIRCUIT, CONSTANT-FREQUENCY TURN-ON CIRCUIT AND VOLTAGE CONVERSION DEVICE
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Oct 24, 2023
filing date -
Jan 17, 2023
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Abstract
A ramp voltage signal generated by an equivalent series resistance compensation circuit in prior art is not linear, and average amplitude and maximum amplitude of the ramp voltage signal changes with an input voltage and a turn-on time. It results in a comparison result or compensation value generated by a comparator of the constant-frequency turn-on circuit will change accordingly and is difficult to control. Thus, it is difficult to design the stability of the system. The embodiments of the present disclosure design an equivalent series resistance compensation circuit including hardware circuits. Through functions of these hardware circuits, a ramp voltage signal of which average amplitude and a maximum amplitude are constant is generated, thereby solving problems encountered in the prior art.
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