Average Current-Mode Control Scheme for a Quadratic Buck Converter With a Single Switch
- 4 January 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 23 (1), 485-490
- https://doi.org/10.1109/tpel.2007.910907
Abstract
A controller for a quadratic buck converter is given using average current-mode control. The converter has two filters; thus, it will exhibit fourth-order characteristic dynamics. The proposed scheme employs an inner loop that uses the current of the first inductor. This current can also be used for overload protection; therefore, the full benefits of current-mode control are maintained. For the outer loop, a conventional controller which provides good regulation characteristics is used. The design-oriented analytic results allow the designer to easily pinpoint the control circuit parameters that optimize the converter's performance. Experimental results are given for a 28 W switching regulator where current-mode control and voltage-mode control are compared.Keywords
This publication has 12 references indexed in Scilit:
- Modeling of a single-switch quadratic buck converterIEEE Transactions on Aerospace and Electronic Systems, 2005
- Control loop design for two-stage DC-DC converters with low voltage/high current outputIEEE Transactions on Power Electronics, 2005
- Extension of bandwidth of two-stage DC-DC converter with low-voltage / high-current outputPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Modeling of switch-mode dc-dc cascade convertersIEEE Transactions on Aerospace and Electronic Systems, 2002
- Automotive electronics power upIEEE Spectrum, 2000
- A quadratic buck converter with lossless commutationIEEE Transactions on Industrial Electronics, 2000
- Switching converters with wide DC conversion rangeIEEE Transactions on Power Electronics, 1991
- Analysis and interpretation of loop gains of multiloop-controlled switching regulators (power supply circuits)IEEE Transactions on Power Electronics, 1988
- Secondary LC filter analysis and design techniques for current-mode-controlled convertersIEEE Transactions on Power Electronics, 1988
- The Cascade Connection of Switching RegulatorsIEEE Transactions on Industry Applications, 1976