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http://dx.doi.org/10.4313/JKEM.2013.26.1.13

Design of a Charge Pump Circuit Using Level Shifter for LED Driver IC  

Park, Won-Kyeong (Department of Nano Engineering, Inje University)
Park, Yong-Su (Department of Electronics, Chungcheong University)
Song, Han-Jung (Department of Nano Engineering, Inje University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.26, no.1, 2013 , pp. 13-17 More about this Journal
Abstract
In this paper, we designed a charge pump circuit using level shifter for LED driver IC. The designed circuit makes the 15 V output voltage from the 5 V input in condition of 50 kHz switching frequency. The prototype chip which include the proposed charge pump circuit and its several internal sub-blocks such as oscillator, level shifter was fabricated using a 0.35 um 20 V BCD process technology. The size of the fabricated prototype chip is 2,350 um ${\times}$ 2,350 um. We examined performances of the fabricated chip and compared its measured results with SPICE simulation data.
Keywords
CMOS; Charge pump; LED display; Level shifter; SPICE simulation; Chip fabrication;
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