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一个40.68MHz完全集成的电压/电流模式双输出PMU用于无线神经植入物.

Yi-Han Ou-Yang, Ronald Wijermars, Pyungwoo Yeon

IEEE transactions on biomedical circuits and systems

|July 22, 2025

概括

此摘要是机器生成的。

本研究介绍了一种用于无线神经植入物的新型双模式电源管理单元,可实现高效,灵活的电力传输. 它实现了高效率和毫米尺寸设备的顺启动.

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科学领域:

电气工程电气工程
生物医学工程生物医学工程
集成电路设计集成电路设计

背景情况:

无线神经植入器需要高效和灵活的电源管理解决方案.
现有的电源管理单元经常与不同的负载条件和芯片内集成挑战作斗争.

研究的目的:

为毫米级无线神经植入物提供一个完全集成的,单输入,双输出功率管理单元 (PMU).
通过双模式操作 (电压/电流) 实现灵活的功率分配和可配置的电压比.

主要方法:

实现了一种双模式的PMU,在电压模式和不同输出负载的电流模式中使用主动全波整形.
采用 40.68 MHz 的工作频率来最大限度地减少外部组件的需求.
集成了一个新的共振断裂开关,用于自给自足的冷启动.

主要成果:

该芯片同时成功调节了两个输出 ($V_{LV}$=1V, $V_{HV}$=2V).
在低压输出方面实现了85.87%的峰值功率转换效率和17.32%的峰值端到端效率.
在不同负载条件下调节两个输出时,证明了最小的效率下降 (2.38%).

结论:

开发的双模式PMU为供电无线神经植入物提供了灵活和高效的解决方案.
芯片上的集成和新的启动机制为更小,更自主的植入式设备铺平了道路.