InnoSwitch4-QR switching frequency
Posted by: alberto.mari.m…
on
Hi!
In the InnoSwitch4-QR datasheet, you find the picture attached to this message as figure6.jpg, which links the current peak to the frequency. I think this is a clear relationship if the system is working in CCM.
But what about QR DCM? If the regulator is working in DCM it moves to QR working mode, where frequency is not constant and is linked to the valleys in the V_drain_source voltage waveform.
In such condition, can we say that the frequency axis in previous picture represents the average frequency?
Thanks.
Files
figure6.jpg
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Hi Alberto,
Good day. Thank you for your interest in Power Integrations solutions.
The graph presented in the figure does not directly present that it is a graph operating in CCM. The figure 6 presents the relationship of the current limit depending on the operating frequency.
Hence, the figure 6 is operational on both CCM and DCM.