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本文提出一种0.518mm²的准电流模式滞环降压DC-DC转换器，采用0.35µm BCDMOS工艺，实现了3µs的负载瞬态响应。该设计通过创新的准电流模式控制，解决了传统电流模式滞环控制器中瞬态响应与RC网络时间常数之间的固有权衡问题，实现了面积高效和快速响应。
to integrate more DC-DC converters into the power-management IC. Consequently, there is a growing need for an area-efficient and simple controller design for DC-DC converters. A simple hysteretic control without any additional component for compensation is a very attractive solution because it is not only cost-effective, but also immediately responds to load change. However, a conventional current-mode hysteretic controller with low-ESR output capacitor, shown in Fig. 12.1.1, has an inherent trade-off between transient response and RC network time constant for emulating inductor current [1]. For instance, at a switching frequency less than several MHz, which is widely used in industry, the RC network occupies a relatively large die area because the capacitance CSEN of
Sang-Han Lee1, Jun-Suk Bang1, Kye-Seok Yoon1, Sung-Wan Hong2,
Chang-Sik Shin1, Min-Yong Jung1, Gyu-Hyeong Cho1 KAIST, Daejeon, Korea, 2Samsung Electronics, Suwon, Korea 1 As more features have been added to mobile devices, it has become necessary