UM
Partial analogue-assisted digital low dropout regulator with transient body-drive and 2.5× FOM improvement
Huang M.1; Lu Y.2; Lu X.1
2018-03-08
Source PublicationElectronics Letters
ISSN00135194
Volume54Issue:5Pages:282-283
AbstractA partial analogue-assisted (AA) digital low dropout regulator (D-LDO) with also a transient body-drive (BD) technique is proposed. The body of the power switches can be driven by the V transient spike that is high-pass coupled from the D-LDO output when a load step occurs, for a temporary threshold voltage change. The BD technique thereby manages to provide more than 10% momentary output current. In addition, since the effectiveness of the AA loop is proportional to the ratio of the coupling capacitance and the parasitic capacitance, here, only about 1/5 of the most significant bit of the power switches are connected to the AA and BD networks. Therefore, the coupling capacitors are much reduced, comparing to the previous work. A simulated 100 mV undershoot is obtained under a 2-to-12 mA load step within 1 ns edge time, using only 40 pF total capacitor. A 0.09 ps figure-of-merit (FOM) of speed is thereby achieved, which is at least 2.5× better than state-of-the-art works.
DOI10.1049/el.2017.4211
URLView the original
Language英語
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.South China University of Technology
2.Universidade de Macau
Recommended Citation
GB/T 7714
Huang M.,Lu Y.,Lu X.. Partial analogue-assisted digital low dropout regulator with transient body-drive and 2.5× FOM improvement[J]. Electronics Letters,2018,54(5):282-283.
APA Huang M.,Lu Y.,&Lu X..(2018).Partial analogue-assisted digital low dropout regulator with transient body-drive and 2.5× FOM improvement.Electronics Letters,54(5),282-283.
MLA Huang M.,et al."Partial analogue-assisted digital low dropout regulator with transient body-drive and 2.5× FOM improvement".Electronics Letters 54.5(2018):282-283.
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