Analog-assisted digital low dropout regulator with fast transient response and low output ripple

• Kazuaki Mori

• Yasuyuki Okuma

• Xin Zhang

• Hiroshi Fuketa

• Takayasu Sakurai

• Makoto Takamiya

抄録

An analog-assisted digital low dropout regulator (AAD-LDO) is proposed to solve the problems of a slow transient response and a large output ripple in a conventional digital LDO. In the AAD-LDO, a fast-response auxiliary analog LDO is added to the digital LDO in parallel. Compared with the digital LDO, the measured AAD-LDO in 180 nm CMOS reduces the transient response time and the output ripple by 59 and 28%, respectively, at the same current efficiency of 97.1%. The line regulation is 15 mV/V and the load regulation is 0.63 mV/mA.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 53 (4S), 04EE22-, 2014-03-28

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360284924865721088
• NII論文ID: 210000143616
• DOI: 10.7567/jjap.53.04ee22
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.53.04EE22
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.53.04EE22/pdf
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