降压稳压器拓扑的宽输入/输出电压差 下载

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降压稳压器拓扑的宽输入/输出电压差为http://www.dianzi6.com整理发布，类型为电源技术，本站还有更多关于电源技术资料下载，电源技术的资料。
正文：Buck regulators are used to efficiently step down a higher level,unregulated input voltage to a regulated output voltage. In applications requiring DC-DC conversion from a high input voltage, the buck regulator dramatically improves conversion efficiency relative to linear
regulator alternatives. However, applying the buck regulator to applications with high input-to-output step-down ratios creates significant challenges for the pulse-width modulation (PWM) controller. Because the duty cycle of the buck regulator switch is approximately equal to VOUT/VIN, a buck DC-DC converter with high input/output voltage ratio must control very narrow PWM pulses. The switching frequency of a buck regulator is generally set to a
high level to reduce the size of the inductor and capacitors
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