Modified Hysteretic Current Control (MHCC) for Improving Transient Response of Boost Converter
Modified Hysteretic Current Control (MHCC) for Improving Transient Response of Boost Converter
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DOI：
10.1109/tcsi.2011.2106231
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
Jen-Chieh Tsai;Chi-Lin Chen;Yu-Huei Lee;Hong-Yuan Yang;M. Hsu;Ke-Horng Chen
中科院分区：
文献类型：
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作者：
Jen-Chieh Tsai;Chi-Lin Chen;Yu-Huei Lee;Hong-Yuan Yang;M. Hsu;Ke-Horng Chen
本文提出了一种调制滞环电流控制（MHCC）技术，以改善瞬态响应的DC-DC升压转换器，这是由于右半平面（RHP）零点的存在而导致的低带宽。MHCC技术可以自动调节导通时间值，以快速增加电感电流，以及缩短瞬态响应时间。此外，基于RHP零点的特性，有意识地调整补偿极点和零点，以实现在负载瞬态条件下的快速瞬态响应和在稳态下的足够的相位裕度。实验结果表明，改善瞬态恢复时间超过7.2倍的负载瞬态响应与传统的升压转换器的设计相比，当负载电流从轻到重，反之亦然。功耗开销仅为1%。
This paper proposes a modulated hysteretic current control (MHCC) technique to improve the transient response of a DC-DC boost converter, which suffers from low bandwidth due to the existence of the right-half-plane (RHP) zero. The MHCC technique can automatically adjust the on-time value to rapidly increase the inductor current, as well as to shorten the transient response time. In addition, based on the characteristic of the RHP zero, the compensation poles and zero are deliberately adjusted to achieve fast transient response in case of load transient condition and adequate phase margin in steady state. Experimental results show the improvement of transient recovery time over 7.2 times in the load transient response compared with the conventional boost converter design when the load current changes from light to heavy or vice versa. The power consumption overhead is merely 1%.