Scott:
First, can we assume that the converter itself has already been successfully tested to RE102? If you are trying to use a commercial converter in a MIL environment, you may be starting at a big disadvantage. Some converter vendors offer an auxiliary active filter module, so get the vendor involved in your problem. The RE problem is probably not originating from radiation directly from the converter case, but from radiation from cabling connected to the converter. You may be able to decrease common mode currents with external ferrites or inductance, twisted pair power feeds may help and you should carefully review the mounting of the converter to the platform frame. Ed Price WB6WSN Chula Vista, CA USA From: S Drysdale [mailto:[email protected]] Sent: Wednesday, February 24, 2016 11:41 AM To: [email protected] Subject: [PSES] Recommendations for DC-DC converter All, My client has a very tight imposed limit for radiated emissions. Let's assume MIL-STD RE102 army ground. We are exceeding emissions caused by the DC-DC converter. Shielding is difficult in this application, and something we would like to avoid. Space requirements are an issue, and we think it may be easier to switch the module altogether. Input 48Vdc, Output is 12Vdc, 1.7A (or ~20W). Size is somewhat important, where smaller is better, but meeting this radiated emission limit is essential. Any recommendations? Best Regards, Scott Drysdale https://www.linkedin.com/in/scottdrysdale OOO - Own Opinions Only - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
