Xin Zhang, Po-Hung Chen, Y. Ryu, K. Ishida, Yasuyuki Okuma, Kazunori Watanabe, T. Sakurai, M. Takamiya
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A 0.45-V input on-chip gate boosted (OGB) buck converter in 40-nm CMOS with more than 90% efficiency in load range from 2µW to 50µW
A 0.45-V input, 0.4-V output on-chip gate boosted (OGB) buck converter with clock gated digital PWM controller in 40-nm CMOS achieved the highest efficiency to date with the output power less than 40μW. A linear delay trimming by a logarithmic stress voltage (LSV) scheme to compensate for the die-to-die delay variations of a delay line in the PWM controller with good controllability is also proposed.
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