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- W4285146768 abstract "A low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current I<sub>Sense</sub>, which replicates the inductor current I<sub>L</sub> with K times. As ISense flows through the capacitor C<sub>Sense</sub>, it will be converted into VSense. Then, the hysteresis-voltage-controlled (HVC) circuit compares the two terminal voltages of hysteresis comparator to detect the overshoot and undershoot of V<sub>Sense</sub>. Once V<sub>Sense</sub> is detected, the output signal of HVC circuits becomes opposite to the previous state to conduct M<sub>P</sub> and M<sub>N</sub> previously. Besides, the 2<sup>nd</sup>-order delta-sigma-modulation (DSM) circuit plays a vital role of mitigating noise-interference and elevating noise in whole circuits. The proposed converter has been fabricated in TSMC 0.18μm 1P6M CMOS processes with an active area of 1.19×1.09mm<sup>2</sup>. The measured results show the transient time are 3.5μs and 3.2μs, respectively, when the load current changes between 500mA and 100mA. On the basic of the measured results of fast-fourier-transform (FFT), the value of output-to-noise ratio (ONR) is 76.6dB at the sampling frequency of 10MHz. The peak conversion efficiency is 92.1% while the load current is 300mA." @default.
- W4285146768 created "2022-07-14" @default.
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- W4285146768 date "2022-01-01" @default.
- W4285146768 modified "2023-10-05" @default.
- W4285146768 title "A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter with Hysteresis-Voltage-Controlled Techniques" @default.
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- W4285146768 doi "https://doi.org/10.1109/access.2022.3183028" @default.
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