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增强升压型DC-DC瞬态响应的电路设计

更新时间:2020-09-11 10:13:26 大小:244K 上传用户:xiaohei1810查看TA发布的资源 标签:DC-DC瞬态响应 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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设计了一种增强升压型DC-DC转换器瞬态响应电路,该电路通过检测负载跳变条件下输出电压的变化,调节误差放大器的跨导和补偿电阻,提高升压DC-DC转换器环路带宽,加快系统的瞬态响应。同时将该电路应用于一款输入电压〈至1.4 V,输出电压2.5~6.5 V的同步升压型DC-DC转换器中,其在0.25μm CMOS工艺条件下,芯片仿真结果表明,在500 mA~2 A的负载跳变条件下,与传统同步升压DC-DC转换器相比,芯片的响应恢复时间减小了45%,输出电压的下降和过冲值减少了35%。

A circuit is designed to improve the transient response of the boost DC-DC converters. The output voltage of the DC-DC converter is sensed to adjust the transconductance and compensation resistors in the error amplifier and to improve the loop bandwidth,thus enhancing the system's transient response. The circuit is implemented in a synchronous boost DC-DC converter with input voltage as low as 1. 4 V and with output voltage 2. 5 ~ 6. 5 V.Based on 0. 25 μm CMOS technology,the chip simulation results demonstrate the settling time of the chip is decreased by 45% and the overshoot and undershoot voltage is cut down by 35% under 200 mA to 2 A load transient condition compared with the traditional synchr...

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增强升压型DC-DC瞬态响应的电路设计.pdf 244K

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