T
treez
Guest
Hello,
The attached SMPS circuit is showing an oscillation in the output current. That is, the output current as seen at the output of an ACS722 current sensor, as in the attached.
Vin = 30v, vout=48v, iout = 3.2A (Av)
I got kicked out of the lab by the cleaner before I could get my teeth into it (going back in tomorrow).
However, I suspect the problem is with the ACS722 current monitor itself, and that the VIOUT pin is not seeing a min load of 4k7, would you agree?
The ACS722 is setup for 20kHz bandwidth.
I see no oscillation on Vout.
I got kicked out too soon, but the oscillation was around 60kHz……and was about 0.8Apkpk.
ACS722 current monitor (10A, unidirectional)
https://www.google.com/url?sa=t&rct...tasheet.ashx&usg=AOvVaw3JPQuBETUeMAFE0wXfP4gr
The attached SMPS circuit is showing an oscillation in the output current. That is, the output current as seen at the output of an ACS722 current sensor, as in the attached.
Vin = 30v, vout=48v, iout = 3.2A (Av)
I got kicked out of the lab by the cleaner before I could get my teeth into it (going back in tomorrow).
However, I suspect the problem is with the ACS722 current monitor itself, and that the VIOUT pin is not seeing a min load of 4k7, would you agree?
The ACS722 is setup for 20kHz bandwidth.
I see no oscillation on Vout.
I got kicked out too soon, but the oscillation was around 60kHz……and was about 0.8Apkpk.
ACS722 current monitor (10A, unidirectional)
https://www.google.com/url?sa=t&rct...tasheet.ashx&usg=AOvVaw3JPQuBETUeMAFE0wXfP4gr
Attachments
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