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Explain the purpose of slope compensation in current mode control.

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Explain the purpose of slope compensation in current mode control.

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What specific aspects of slope compensation are you interested in? Are you looking for a technical overview, its applications, or its impact on stability?
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Slope compensation is used in current mode control to stabilize the feedback loop of switching power supplies. In current mode control, the inductor current is used to regulate the output, but this can lead to subharmonic oscillations, especially when the duty cycle is large. Slope compensation involves adding a ramp signal to the current sense signal to counteract these oscillations. This ramp compensates for the slope of the inductor current waveform, effectively improving stability and performance by ensuring that the control loop remains stable across all operating conditions.
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