⚡ 本页包含 AI 生成的分析内容,仅供参考
本文提出一种分段交织多相混合转换器,用于数据中心12V到负载点的直接转换,通过在所有电感器上同时增加电流来瞬时提高电感电流摆率,从而减小负载瞬态下的输出电压欠冲。该转换器具有固有的自动平衡电感电流特性,无需额外控制。
Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 In datacenters, direct conversion from a 12V input voltage VIN intermediate bus to point-of-load (PoL) is a common practice for powering computing chips [1,2]. The increasing computing power necessitates multiple-phase (MP) converters. To reduce power loss, it is crucial to minimize the guard band (between VMIN and VLOAD) that accommodates the output voltage undershoot during load transients. This can be achieved by instantaneously increasing the inductor current (IL) slew rate (SR) by energizing all inductors simultaneously in a MP converter [3,4]. Furthermore, balancing the ILs of a MP converter is pivotal for mitigating thermal issues and ensuring system reliability. However, the conventional MP buck, along with MP hybrid converters like MPCCC [5] and IL-MSD [6], exhibit significant IL imbalance due to duty cycle D mismatches among phases.
Jiacheng Yang1, Rui P. Martins1,2, Mo Huang1
University of Macau, Macau, China