True. :-( You might be able to temporarily shield that inductor,
but that's a shot in the dark.
The only thing I can think of is to remove the input diode for the
switcher (to power it down) and feed it 3.3 from an LDO through the
test point, and see if that makes a difference. I do *not*
A lot of switching power supplies have a low-current mode where they
don't switch at the full rate.
It's switching at 150KHz (it's normal rate), about 25% duty cycle.
I tried adding a 68 ohm resistor on the 3.3v bus, no change.
___
geda-user
DJ Delorie wrote:
A lot of switching power supplies have a low-current mode where they
don't switch at the full rate.
It's switching at 150KHz (it's normal rate), about 25% duty cycle.
I tried adding a 68 ohm resistor on the 3.3v bus, no change.
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