Time optimal, parameters-insensitive digital controller for VRM applications with Adaptive Voltage Positioning
Time optimal, parameters-insensitive digital controller for VRM applications with Adaptive Voltage Positioning
复制标题
适用于具有自适应电压定位功能的 VRM 应用的时间最优、参数不敏感的数字控制器
作者：
L. Corradini;A. Costabeber;P. Mattavelli;S. Saggini
研究了配备低ESR陶瓷输出电容器的电压调节模块（VRM）的时间最佳负载阶跃响应的数字控制方法。所提出的时间优化技术对功率级参数不敏感，因为其操作不依赖于输出滤波器电感或电容的知识。一旦检测到负载瞬变，通过单次开/关切换动作实现时间最佳响应，并自动集成自适应电压定位（AVP）调节。所提出的鲁棒时间优化方法通过计算机仿真和同步降压变换器原型的实验测试进行了验证。
A digital control approach is investigated for time-optimal load step response of Voltage Regulation Modules (VRM) equipped with low-ESR ceramic output capacitors. The proposed time-optimal technique is insensitive to the power stage parameters, as its operation does not rely on the knowledge of the output filter inductance or capacitance. The time-optimal response is achieved through a single on/off switching action undertaken as soon as a load transient is detected and automatically incorporates Adaptive Voltage Positioning (AVP) regulation. The proposed robust time-optimal approach is validated through both computer simulations and experimental tests on a synchronous buck converter prototype.