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A boost converter with 3-6V input and fast transient digital control comprising a 90 ns-latency live-tracking window ADC

  • This paper presents a digitally controlled boost converter IC for high output voltage and fast transient applications. Thus, it is well applicable in automotive and industrial environments. The 3V-to-6V input voltage, 6.3V output voltage, 1A boost converter IC is fabricated in a 180nm BCD technology. Digital control enables cost savings, advanced control concepts, and it is less parameter sensitive compared to common analog control. A 90 ns latency, 6-bit delay line ADC operates with a window concept, meeting high resolution requirements, e.g. in car battery applications. An output voltage live tracking is included for extending the ADC conversion window. A charge pump DAC provides high resolution, monotonicity, and short 128 ns conversion time. Further, a standard digital PI controller is enhanced by a simple but effective ΔV/Δt-intervention control. It results in 2.8x reduced output voltage deviations in case of load steps, scaling down the output capacitor value by the same factor.

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Metadaten
Author of HS ReutlingenQuenzer-Hohmuth, Samuel; Wicht, Bernhard
DOI:https://doi.org/10.1109/ESSCIRC.2018.8494242
ISBN:978-1-5386-5404-0
Erschienen in:ESSCIRC 2018 : IEEE 44th European Solid State Circuits Conference (ESSCIRC) : 3-6 Sept. 2018
Publisher:IEEE
Place of publication:Piscataway, NJ
Document Type:Conference proceeding
Language:English
Publication year:2018
Page Number:4
First Page:130
Last Page:133
DDC classes:620 Ingenieurwissenschaften und Maschinenbau
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt