Title
Integrated Loop-Gain Measurement Circuit for DC/DC Boost Converters with Time-Based Control
Abstract
The open-loop transfer function provides valuable insights into the key dynamic characteristics of DC/DC voltage regulators, such as stability, line and load transient response. Nonetheless, the experimental measurement of the loop gain in a monolithically integrated regulator is not straightforward or not even possible by using standard techniques, especially when complex control strategies are adopted. To overcome this issue, we propose an integrated loop-gain measurement circuit specifically designed for DC/DC converters with time-based control. The measurement circuit includes a transconductor, two delay lines, and a simple logic that can be easily integrated in a small silicon area. Moreover, the circuit can be easily disabled during normal operation to minimize its impact on the regulator performance. The proposed circuit was fabricated in a 180nm CMOS technology, occupying a silicon area of $0.027\mathrm{mm}^{2}$. Experimental validation was performed by embedding the circuit into a boost converter with time-based control.
Year
DOI
Venue
2022
10.1109/PRIME55000.2022.9816761
2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)
Keywords
DocType
ISBN
integrated loop-gain measurement circuit,time-based control,open-loop transfer function,load transient response,experimental measurement,loop gain,monolithically integrated regulator,complex control strategies,CMOS technology,DC-DC converters,DC-DC voltage regulators,stability,transconductor
Conference
978-1-6654-6701-8
Citations 
PageRank 
References 
0
0.34
6
Authors
5
Name
Order
Citations
PageRank
Mauro Leoncini100.34
Paolo Melillo200.34
Alessandro Bertolini300.34
Salvatore Levantino420.70
Massimo Ghioni500.34