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Digitally programmable DC-DC voltage down converter

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4 Author(s)
Lin, M.C. ; Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan ; Lin, H.Y. ; Chen, C.L. ; Jou, S.-J.

This paper describes a digitally programmable DC-DC voltage down converter (VDC) with a new structure of pulse width modulation (PWM) circuit. The PWM circuit is constructed by a cascaded digitally controlled oscillator (DCO) delay cells and provides two control words to select the operating frequency and duty cycle respectively. The VDC was implemented with a 0.6-μm triple-metal CMOS process on 1000×1000 μm2 core size. The simulation results show that it can convert +5 V input voltage to +2~+5 V output voltage in the 50 μs settling time

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ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on

Date of Conference: