A Digital Multi-Mode Multi-Phase IC Controller for Voltage Regulator Application
A Digital Multi-Mode Multi-Phase IC Controller for Voltage Regulator Application
复制标题
DOI：
10.1109/apex.2007.357594
复制
发表时间：
2007-05
期刊：
影响因子：
--
通讯作者：
Jianhui Zhang;S. Sanders
中科院分区：
文献类型：
--
作者：
Jianhui Zhang;S. Sanders
本文提出了一种适用于稳压器的数字多模多相集成电路控制器。集成电路控制器将负载电流前馈与负载调度数字PID反馈控制相结合，以实现快速的负载瞬态响应。设计的控制器集成电路采用多模式控制策略，使稳压器在大负载范围内高效运行。在IC控制器中实现了高分辨率13位数字脉宽调制器（DPWM）和4mV量化bin模数转换器（ADC），以确保稳压器的严密直流调节。原型4相IC控制器在0.18 m CMOS工艺中占用0.5 mm2的有源面积。
This paper presents a digital multi-mode multi-phase IC controller for the voltage regulator application. The IC controller combines load current feedforward with a load-scheduled digital PID feedback control to achieve a fast load transient response. The multi-mode control strategy is applied in the designed controller IC, allowing high efficiency operation of a voltage regulator over a wide load range. A high resolution 13-bit digital pulse width modulator (DPWM) and 4mV quantization bin analog-to-digital converter (ADC) is implemented in the IC controller to ensure tight DC regulation of the regulator. The prototype 4-phase IC controller takes 0.5 mm2 active area in a 0.18 ¿m CMOS process.