1. 安徽理工大学 机构 电气与信息工程学院,安徽,淮南,232001
2. 上海大学 微电子研发中心,上海,200072
纸质出版:2018
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蔡俊, 宋飞, 陈晓烽, 冉峰. 一种硅基OLED微显示芯片的PMU设计[J]. 微电子学与计算机, 2018, 35(4): 135-139.
CAI Jun, SONG Fei, CHEN Xiao-feng, et al. A Design of PMU for the OLED-on-Silicon Micro-Display Chip[J]. 2018, 35(4): 135-139.
设计了一种集成在硅基OLED微显示芯片上的电源管理单元(PMU).该PMU采用Cuk型DC-DC变换器和LDO相结合的新型结构
其中Cuk电路采用PWM调制的峰值电流控制模式输出负电压
同时Cuk电路产生的脉冲电压经过滤波得到直流电压
该电压通过LDO模块输出正电压.电路的整体设计和仿真在SMIC 0.18 m 1.8 V/5 V CMOS数模混合工艺下完成
仿真结果表明
在2 MHz开关频率和3.3 V标准输入电压条件下
输出正电压在2~5.5 V范围内可调
输出负电压在-2~-5.5 V范围内可调
纹波均小于5 mV.输出正、负电压的线性调整率分别为5 mV/V和20 mV/V
负载调整率分别为0.04 mV/mA和0.15 mV/mA
满足PMU的设计指标.
A power management unit (PMU) is proposed that can be integrated in the OLED-on-Silicon micro-display devices. The PMU uses a new structure that combine a Cuk type DC-DC converter and low drop-out voltage regulator(LDO). The DC-DC converter is used to generate negative voltage output with PWM modulation
meanwhile the LDO generates positive voltage output. The PMU is designed under SMIC 0.18 m 1.8V/5V CMOS mix-signal process. With the 3.3 V input power voltage
the output voltage has an adjustable positive voltage range of 2~5.5 V along and a negative voltage range of -2~-5.5 V. The simulation results show that the output ripple of voltage is less than 5 mV. The positive and negative voltage output linear regulation is 5 mV/V and 20mV/V. Also
a load regulation of 0.04 mV/mA and 0.15 mV/mA is designed to meet the PMU specification.
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