TY - GEN
T1 - A digitally controlled DC-DC buck converter using frequency domain adcs
AU - Ahmad, Hani
AU - Bakkaloglu, Bertan
PY - 2010
Y1 - 2010
N2 - The design of a 0.18-μm CMOS digital control architecture for a buck converter is presented. Several features are implemented. These include: 1) Frequency-domain digitization technique based on first-order non-feedback Sigma-Delta frequency Discriminators (NF-SDFD); 2) a robust arrangement for the feedback ADCs to guard against false output voltage variation due to temperature and process variation; 3) A new improved hybrid Digital Pulse Width Modulator (DPWM) architecture. The proposed system has additional attractive futures such simplicity, scalability, low power, close to all digital implementation in addition to its capability of satisfying tight regulation requirements for wide range of applications. An 8-bit ADC resolution is achieved with less than 110 μA current consumption. A 9-bit DPWM consumes around 370 μA . A 2% output voltage regulation accuracy is achieved with less than 10 mVpp ripple.
AB - The design of a 0.18-μm CMOS digital control architecture for a buck converter is presented. Several features are implemented. These include: 1) Frequency-domain digitization technique based on first-order non-feedback Sigma-Delta frequency Discriminators (NF-SDFD); 2) a robust arrangement for the feedback ADCs to guard against false output voltage variation due to temperature and process variation; 3) A new improved hybrid Digital Pulse Width Modulator (DPWM) architecture. The proposed system has additional attractive futures such simplicity, scalability, low power, close to all digital implementation in addition to its capability of satisfying tight regulation requirements for wide range of applications. An 8-bit ADC resolution is achieved with less than 110 μA current consumption. A 9-bit DPWM consumes around 370 μA . A 2% output voltage regulation accuracy is achieved with less than 10 mVpp ripple.
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U2 - 10.1109/APEC.2010.5433488
DO - 10.1109/APEC.2010.5433488
M3 - Conference contribution
AN - SCOPUS:77952204357
SN - 9781424447824
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1871
EP - 1874
BT - APEC 2010 - 25th Annual IEEE Applied Power Electronics Conference and Exposition
T2 - 25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010
Y2 - 21 February 2010 through 25 February 2010
ER -