| 基于数字PID补偿的降压型DC-DC控制器 |
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| 引用本文： | 孟浩,贾晨,陈志良.基于数字PID补偿的降压型DC-DC控制器[J].微电子学,2007,37(5):692-695,699. |
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| 作者姓名： | 孟浩 贾晨 陈志良 |
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| 作者单位： | 清华大学,微电子学研究所,北京,100084 |
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| 基金项目： | 信息产业部电子信息产业发展基金 |
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| 摘 要： | 设计了一个基于数字PID控制,可为低压系统提供稳定电源的多相位降压型DC-DC控制电路,包括flash ADC、数字PID控制器;并设计了一种新的基于延时单元/计数器的数字PWM电路,实现了一个降压型控制器。电路使用3.3 V CMOS工艺设计,芯片面积为0.16 mm2,输入电压3 V,输出电压1.25 V,负载电流最大800 mA,纹波小于10 mV,开关频率1 MHz,效率最高达到90%。
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| 关 键 词： | DC-DC变换器 降压型变换器 数字脉冲宽度调制 数字PID控制 |
| 文章编号： | 1004-3365（2007）05-0692-04 |
| 修稿时间： | 2007-01-152007-04-13 |
A Buck DC-DC Controller with Digital PID Compensation |
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| MENG Hao,JIA Chen,CHEN Zhi-liang.A Buck DC-DC Controller with Digital PID Compensation[J].Microelectronics,2007,37(5):692-695,699. |
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| Authors: | MENG Hao JIA Chen CHEN Zhi-liang |
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| Affiliation: | Institute of Microelectronics , Tsinghua University, Beijing 100084, P. R. China |
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| Abstract: | A buck DC-DC controller with digital PID compensation was designed for low voltage applications.Analog to digital conversion,digital PID control algorithm and digital PWM were implemented in the circuit.An improved structure of hybrid delay-line/counter DPWM was used without dither patterns.And a look-up table based PID controller was designed using zero-pole matching.Finally,a flash ADC was used.The chip occupies 0.16 mm2 active area in 3.3 V CMOS process.For 3 V input and 1.25 V output voltages,the circuit has a maximum load current up to 800 mA,a switching frequency of 1 MHz and a maximum efficiency up to 90%. |
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| Keywords: | DC-DC converter Buck converter DPWM Digital PID controller |
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