Name
Title | ||
|---|---|---|
High-Bandwidth Multisampled Digitally Controlled DC–DC Converters Using Ripple Compensation |
Abstract | ||
|---|---|---|
This paper investigates multi sampled digitally controlled switched-mode power supplies with switching ripple compensation. In digital controllers for power converters, the main bandwidth limitations come from A/D conversion time, computational delays, and small-signal delay of the digital pulsewidth modulator (DPWM). In hard-wired digital-controller technologies, such as in dedicated digital IC and/or in field-programmable gate arrays (FPGAs), the calculation delays can be made negligible with respect to the switching period; thus, when fast ADCs are used, the overall phase lag is dominated by the DPWM. The multi sampling approach can strongly reduce the DPWM delay, thus breaking the bandwidth limitations of conventional single-sampled solutions. In this paper, the additional aliasing effects, which would require a filtering action, are avoided, exploiting the periodic nature of the switching ripple under steady-state conditions using a repetitive-based filtering action. Simulation and experimental results on a 1.2-V-10-A 500-kHz synchronous buck converter, where the digital control has been implemented in the FPGA, confirm the properties of the proposed solution. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/TIE.2008.917144 | IEEE Transactions on Industrial Electronics |
Keywords | Field | DocType |
DC-DC power convertors,digital control,switched mode power supplies,switching convertors,bandwidth limitations,digital controllers,high-bandwidth multisampled digitally controlled dc-dc converters,power converters,repetitive-based filtering action,switched-mode power supplies,switching ripple compensation,synchronous buck converter,DC–DC converters,digital control,field-programmable gate array (FPGA),oversampling | Oversampling,Control theory,Converters,Control engineering,Electronic engineering,Aliasing,Bandwidth (signal processing),Engineering,Ripple,Digital control,Buck converter,Switched-mode power supply | Journal |
Volume | Issue | ISSN |
55 | 4 | 0278-0046 |
Citations | PageRank | References |
21 | 1.73 | 10 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Luca Corradini | 1 | 27 | 2.74 |
| Paolo Mattavelli | 2 | 210 | 35.11 |
| Elisabetta Tedeschi | 3 | 24 | 4.01 |
| Daniele Trevisan | 4 | 21 | 1.73 |