Abstract
The purpose of this paper is to present a comparison of state-of-the-art digital and analogue control for a
Buck converter with synchronous rectification. The digital
control scheme is based on a digital self-oscillating modulator that allows the sampling frequency to be higher than the switching frequency of the converter. Voltage mode control is used in both the analogue and digital control schemes. The experimental results show that it is possible to design a digitally controlled Buck converter that has the same performance as can be achieved using commercially available analogue control ICs.
The performance of the analogue system can however be
increased by using a separate operational amplifier as error
amplifier. Thus analogue control is still the best option if high control bandwidth and fast transient response to load steps are important design parameters.
| Original language | English |
|---|---|
| Title of host publication | Applied Power Electronics Conference |
| Volume | 2 |
| Publisher | IEEE |
| Publication date | 2008 |
| Pages | 1440-1445 |
| ISBN (Print) | 978-1-4244-1874-9 |
| Publication status | Published - 2008 |
| Event | 23rd Applied Power Electronics Conference - Austin, TX, United States Duration: 24 Feb 2008 → 28 Feb 2008 Conference number: 23 http://www.apec-conf.org/2008/images/PDF/2008/apec08_preliminaryprogram_webcopy.pdf |
Conference
| Conference | 23rd Applied Power Electronics Conference |
|---|---|
| Number | 23 |
| Country/Territory | United States |
| City | Austin, TX |
| Period | 24/02/2008 → 28/02/2008 |
| Internet address |