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首页> 外文期刊>Circuits and Systems II: Express Briefs, IEEE Transactions on >Design and Implementation of a Sliding-Mode Controller for Low-Dropout/Linear Regulator
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Design and Implementation of a Sliding-Mode Controller for Low-Dropout/Linear Regulator

机译：低压差/线性稳压器的滑模控制器的设计与实现

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摘要

This brief presents an approach to utilize of sliding-mode (SM) controller in digital low-dropout/linear regulators. Various design aspects, including the extraction of the regulator state-space model and sliding coefficients by considering the hitting, existence, and stability conditions are described. Moreover, the freeze control block is introduced as a solution to compensate for the high frequency chattering phenomenon of SM, resulting in reduction of switching losses. In order to verify the statements, a quasi digital low-dropout/linear regulator is implemented in a discrete form on a PCB. The circuit consists of the proposed current-mode current feedback amplifier-based SM controller and switched-mode pMOS array driven by a bidirectional serial shift register, which is controlled by the SM controller. The results reveal that the controller detects the load changes rapidly, and eliminates the output limit-cycle oscillation, providing a robust and stable output voltage.
机译：本简介介绍了一种在数字低压差/线性稳压器中利用滑模（SM）控制器的方法。描述了各种设计方面，包括通过考虑碰撞，存在和稳定性条件来提取调节器状态空间模型和滑动系数。此外，引入冻结控制模块作为补偿SM高频颤振现象的解决方案，从而降低了开关损耗。为了验证这些说法，准数字低压差/线性稳压器以离散形式在PCB上实现。该电路包括拟议的基于电流模式电流反馈放大器的SM控制器和由双向串行移位寄存器驱动的开关模式pMOS阵列，该寄存器由SM控制器控制。结果表明，该控制器可快速检测到负载变化，并消除了输出极限周期振荡，从而提供了稳定而稳定的输出电压。

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