| Title |
Design of Low Noise DC-DC Converter ApplyingThermometer Decoder to SSCG |
| Authors |
전상규(Sang Gyu Jeon) ; 윤태영(Tae Young Yoon) ; 조종완(Jong Wan Jo) ; 이강윤(Kang-Yoon Lee) |
| DOI |
https://doi.org/10.5573/ieie.2019.56.12.67 |
| Keywords |
DC-DC Buck Converter ; Spread Spectrum Clock Generator ; Thermometer Decoder ; |
| Abstract |
This paper describes various types of pulse width modulation (PWM) control method applied to DC-DC converter. The proposed Buck converter reduces harmonics and output ripple voltage using Sawtooth Generator and Spread Spectrum Clock Generator (SSCG). A low ripple voltage was obtained using a random generator and a thermometer decoder, and up to 90.16% efficiency was achieved using a capacitor bank bolck instead of a bias current block. The switching frequency is 3MHz, spreading from 2MHz to 3MHz using the Spread Spectrum Clock Generator. |