Using constant switching frequency in a linear-assisted DC-DC switching regulator
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This article shows the proposal of a linear-assisted converter or linear-&-switching hybrid converter with a constant switching frequency. The control loop of the system is based on the current-mode technique. The main disadvantage of a converter with current-mode control is the inherent instability of the loop when switch duty ratios are greater than 0.5. In order to make stable the proposed linear-assisted converter, the article shows the technique based on a slope compensation.
CitacióMartinez, H. Using constant switching frequency in a linear-assisted DC-DC switching regulator. A: IEEE International Conference on Industrial Informatics. "Proceedings of the 2015 IEEE International Conference on Industrial Informatics (INDIN)". Cambridge: 2015, p. 1567-1571.