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本文提出一种1.8W高频单电感多输出(SIMO)转换器,通过数字无传感器计算零电流操作和非线性占空比控制,解决了移动设备中电源转换器被动元件占用大量PCB面积的问题,同时实现多电压域高效管理。
Shahar Wolf2, Ashoke Ravi1, Krishnan Ravichandran1, Ofir Degani2, James W. Tschanz1, Vivek De1 Intel, Hillsboro, OR Intel, Haifa, Israel 1 2 Power delivery components are critical for meeting size and weight requirements of ultramobile electronic systems. The L and C passives in power delivery sub-systems occupy >50% of the total PCB area, often dictating the thickness of handheld devices. On the other hand, advanced power management capabilities demand multiple individually controllable voltage domains with high conversion efficiency to maximize battery life. These voltage domains can be supplied by multiple buck converters that increase platform size & weight, or by a single converter followed by multiple point-of-load LDOs that degrade overall power efficiency. Single-inductor multiple-output (SIMO) converters promise a more balanced solution for these critical trade-offs [1–4] but are vulnerable
Suhwan Kim1, Harish K. Krishnamurthy1, Sergey Sofer2, Sheldon Weng1,