An improved sampled-data current-mode-control model which explains the effects of control delay.

A new sampled-data model for the current-mode controlled buck converter includes for the first time the effects of delay in the pulse-width-modulator (PWM). Modified z-transforms are used in this new model for constant frequency trailing-edge modulation. Realistic amounts of delay are found to be pa...

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Bibliographic Details
Published in:	IEEE Transactions on power electronics 16, 3 (2001).
Main Author:	Mayer, E.A
Format:	Article
Language:	English
Subjects:	PWM delay. Ridley's current-mode control model. Boundary condition. Constant frequency trailing-edge modulation. Continuous conduction mode. Control delay. Current-mode controlled buck converter. Digital modulator. Discontinuous conduction mode boundary. Improved sampled-data current-mode-control model. Loop gain measurements. Low-frequency loop gain magnitude. Modified z-transforms. Sub-harmonic instability. Zero delay.