Constant-Current Source Creates Slope-Compensation Ramp In SMPS

by Claude Abraham, staff engineer, Bendix Commercial Vehicle Systems, Elyria, Ohio, Electronic Design, Oct 11 2007

Focus:
In power supplies that employ peak current-mode control a ramp signal is required to slope-compensate the current control loop. A simple, constant-current-source ramp generator improves power supply stability and accuracy versus other methods of ramp generation.

What you’ll learn:

• How to generate a ramp signal for compensation with slope that is independent of power supply input voltage

Notes:
ED's Ideas For Design

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