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A 0025045 W 60-Ef ficiency Inductive-Coupling Power Transceiver With 5-Bit Dual-F
一种用于非接触式存储应用的高效电感耦合功率收发器,采用5位前馈控制应对负载变化。
0.025-0.45W, 40%-70%效率, 平均60%效率
电感耦合功率收发器前馈控制脉冲密度调制有源整流器
▸创新点1:5位前馈控制技术(系统创新)。该技术通过预测主机命令与存储卡负载模式的相关性,显著减少了响应时间,提高了系统在突变负载条件下的效率。
▸创新点2:脉冲密度调制(PDM)与多通道结构(方法创新)。采用PDM技术实现5位功率级别控制,并结合多通道结构,每个通道选择不同工作频率以最大化功率传输效率。
▸创新点3:快速正反馈有源整流器(电路创新)。该整流器通过快速正反馈机制提高了整流效率,并支持高速操作,显著提升了收发器的整体性能。
▸创新点4:高效率性能(性能创新)。测试原型在所有负载条件下实现了40%–70%的效率,平均效率达到60%,相比现有技术有数量级的提升。
Abstract
A 0.025–0.45 W inductive-c oupling power trans-
ceiver for non-contact memory applications is presented. To deal
with sudden and large load variations and achieve high-ef ficiency,
we propose a power transceiver with 5-bit feedforward control.
Knowing that load patterns of a memory card have strong cor-
relation with commands issued by a host, feedforward control is
applied to minimize response times . To achieve 5-bit power levels,
the proposed transceiver utilizes pulse-density modulation (PDM)