Buck Converter with Active-Current-Sensing Techniques and Hysteretic-Voltage-Controlled Buck Converter with Pseudo-Current-Sensing Techniques

• Main Authors: LIN, JIA-MING, 林佳銘
• Other Authors: HWANG, YUH-SHYAN
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/t6xmfj

碩士 === 國立臺北科技大學 === 電子工程系 === 107 === In the first converter, the active-current-sensing technique is used to sense the inductor current, which can reduce the glitch caused by switching. The proposed circuit not only performs with fast transient response time, but also improves the conversion efficiency. The first converter is implemented with TSMC 0.35-µm COMS process. The chip area is roughly 1.488×1.433 mm2, the input voltage is 3.3 V，and the output voltage varies from 1.0 V to 2.5 V, When the output voltage is 2.5 V and the output current is 200 mA, the highest efficiency is 87.2%. The second converter of the paper is the hysteretic-voltage-controlled buck converter with pseudo-current-sensing technique. This architecture of the proposed circuit is simple and easy to design. Compared with traditional converter circuit, the proposed comments are faster transient response, more stability, and reduce power consumption. TSMC CMOS 0.35-µm process is used to design converters. The chip area is 1.500×1.373 mm2, the input voltage is 3.3 V, and the output voltage ranges from 1.0 V to 2.5 V. When the output voltage is 2.5 V and the output current is 250 mA, the peak efficiency is roughly 90.6%.