L’8 novembre
Ovunque tu sia, prova a prenderci.
Se ci riesci.
Remember, remember the 8th of November...
Remember the 8th of November.
Catch the Fox, if you can!
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L’8 novembre
Ovunque tu sia, prova a prenderci.
Se ci riesci.
Remember, remember the 8th of November...
Remember the 8th of November.
Catch the Fox, if you can!
Twitter
Seguici su Twitter
Visita il sito
You are not hearing the
Posted by foxy Mon, 05/31/2010 - 09:18You are not hearing the 150kHz directly, you are hearing effects of the PWM tracking for controlling the output voltage. You say you are 70-653 using a shielded inductor with potting, so that's probably where the noise is coming from -- 70-654 the interface between the two parts (inductor and shield).
Try using an unshielded inductor to see 70-655 if the noise goes away. If you need a shielded inductor for that part for other reasons, try 70-656 using a toroidal inductor instead (it is self-shielding for generating external B-fields, not for being immune to external interfering B-fields).