首页>
外国专利>
Methods to reduce output voltage ripple in constant on-time DC-DC converters
Methods to reduce output voltage ripple in constant on-time DC-DC converters
展开▼
机译:减少恒定导通时间DC-DC转换器中输出电压纹波的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
According to one aspect of the teachings herein, a DC-to-DC converter operates according to an advantageous constant on-time topology that reduces output voltage ripple during light load conditions. The converter produces an output voltage by driving high-side and low-side switches in an inductor-based switching circuit, and regulates the output voltage by varying the on-time of a low-side switch, while holding the on-time of the high-side switch constant. Advantageously, the converter shortens the on-time of the high-side switch during light load conditions, which reduces the output voltage ripple. Thus, the converter may be understood as using a first, constant on-time for the high-side switch during “normal” operations and a second, shorter on-time for the high-side switch during light load conditions.
展开▼