Voltage drop on half load using TOP267EG
Hello there,
We have been working on TOP267 and designed a 24V/5A SMPS using ETD Core, at load it is tuned to 24VDC at half load it goes down to 22V, and at full load further decreases to 21V. Is there any way we can reduce this difference a drop of 1 volt works best for us
Please suggest ways to overcome this issue
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Hey thanks for the reply
need to know how can I decide on the cross-frequency ??
Hi oki,
Thank you for your prompt reply.
You may consider a frequency within 100Hz to 7KHz as suggested on figure 17 on page 15 of the design guide.
A voltage drop that appears only at half load can sometimes point to a feedback loop or regulation issue rather than a problem with the transformer itself. Checking component tolerances and load conditions may help narrow it down. Technical troubleshooting like this often requires patience, much like discussions surrounding Pragmatic GB casino where small details can make a noticeable difference.
Hi Oki,
We may reconfigure the value of R13 and consider introducing an RC across R13 with values as suggested from the device design guide on page 17 as RB and CB.
Also, we can consider adding pre-load in the output.
I hope this works for you. Please let us know if you need further support.