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提高能源效率使用低ESR电容器设备
可穿戴设备已成为电子产品的重要应用领域。可穿戴设备用户提供测量他们的健康和健身，使它更容易保持联系在线不用拿起检查智能手机的能力。但可穿戴设计给电子系统设计者带来了挑战。
大多数可穿戴设备的主要设计目标是确保能源消耗保持在最低限度。用户不喜欢经常充电可穿戴设备，特别是如果他们需要插入电源。无线充电提供了更大的灵活性和更好的用户接受，但可能会导致更长的充电时间，因为可以转移到设备的能量的速率的限制。
OpTImizing the energy consumpTIon of a wireless device demands attenTIon at every level of the design， including that of the power-delivering subsystem itself. In almost all cases a wearable will employ a switched-mode DC/DC converter to provide a regulated， constant voltage to the electronics when fed from a battery cell that will typically provide a falling voltage as the stored charge dissipates.
Many DC/DC converters employ a combinaTIon of inductor and capacitor on the load side to smooth out voltage and current peaks. This is especially important for the energy-saving pulse-skipping modes that many converters for portable and wearable devices support. The pulse-skipping mode is generally used during periods of low-activity as an alternative to the pulsewidth modulation （PWM） voltage regulation that is used when the load is fully active.
