A 120-330V, sub-μA, 4-Channel Driver for Microrobotic Actuators with Wireless-Optical Power Delivery and over 99% Current Efficiency
A 120-330V, sub-μA, 4-Channel Driver for Microrobotic Actuators with Wireless-Optical Power Delivery and over 99% Current Efficiency
复制标题
A%20120-330V、%20sub-μA、%204 通道%20Driver%20for%20Microrobototic%20Actuators%20with%20Wireless-Optical%20Power%20Delivery%20and%20over%2099%%20Current%20Efficiency
DOI：
10.1109/vlsicircuits18222.2020.9162908
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Stauth, J. T.
中科院分区：
文献类型：
--
作者：
Rentmeister, J. S.;Pister, K.;Stauth, J. T.
这项工作介绍了一种4通道，毫米级，静电和压电驱动器，使用<；；1μA总静态偏置电流，可以驱动高达120-330V的驱动器负载，频率超过1 kHz。该驱动器可实现99%以上的电流效率，并可与由准直或漫反射光源驱动的集成光伏阵列不受限制地工作。该电路用片外升压电路进行了测试，在45 mW的负载下，输出功率大于1.5KV，功率效率为85%。该系统使用一个简单的4位CMOS逻辑电平接口和100 kHz时钟来驱动高压通道；片上光伏还为数字控制器和I/O总线供电。
This work presents a 4-channel, mm-scale, electrostatic and piezoelectric actuator driver that uses <; 1 μA total quiescent bias current and can drive actuator loads up to 120-330V at frequencies over 1kHz. The driver achieves over 99% current efficiency and can operate untethered with an integrated photovoltaic array driven by a collimated or diffuse optical power source. The circuit is tested with an off-chip boost circuit, generating over 1.5kV with 85% power efficiency at 45mW load. The system uses a simple 4-bit CMOS logic level interface with 100 kHz clock to actuate high voltage channels; on-chip photovoltaics also power the digital controller, and I/O bus.