2019
DOI: 10.3906/elk-1809-45
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A novel adaptive hysteresis DC-DC buck converter for portable devices

Abstract: This paper presents a new technique that adjusts the hysteresis window depending on the variations in load current caused by a voltage-mode circuit to reduce the voltage and current ripples. Moreover, a compact current-sensing circuit is used to provide an accurate sensing signal for achieving fast hysteresis window adjustment. In addition, a zero-current detection circuit is also proposed to eliminate the reverse current at light loads. As a result, this technique reduces the voltage ripple below 8.08 mV pp a… Show more

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Cited by 1 publication
(1 citation statement)
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“…Three different realizations of proposed hysteresis optimizers had been analyzed in his work, including operation principle and adjustment of hysteresis intervals. Park [16] presented a new technique that could adjust the hysteresis window depending on the variations in load current caused by a voltage-mode circuit to reduce the voltage and current ripples. In addition, a zerocurrent detection circuit was also proposed to eliminate the reverse current at light loads.…”
Section: Introductionmentioning
confidence: 99%
“…Three different realizations of proposed hysteresis optimizers had been analyzed in his work, including operation principle and adjustment of hysteresis intervals. Park [16] presented a new technique that could adjust the hysteresis window depending on the variations in load current caused by a voltage-mode circuit to reduce the voltage and current ripples. In addition, a zerocurrent detection circuit was also proposed to eliminate the reverse current at light loads.…”
Section: Introductionmentioning
confidence: 99%