May b u cn think of extending it to inner layers; having a wire connecting both ends with turrets, would be easy solution if you don't require PCB being rugged. If the problem u r saying is in the design of any switching regulator then I think extending to inner layers will help. Regards Srilakshmi -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Bellack, Sandra Sent: Tuesday, June 08, 2010 6:49 PM To: abin.cv; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: PCB trace width calculation for pulsed current Would be interesting to know -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of abin.cv Sent: Tuesday, June 08, 2010 4:27 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] PCB trace width calculation for pulsed current Hi, I am designing PCB for a power supply rated 33V,18A 20% duty cycle. Due to less space availablity ,i could only provide a max of 200 mill trace width of 1.5 oz copper which would carry a constant peak current of 9.87A at 10deg raise. Please give any suggestion for improvement. Thanks in Advance, Abin **************** CAUTION - Disclaimer *****************This email may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, retention, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message. Also, email is susceptible to data corruption, interception, tampering, unauthorized amendment and viruses. We only send and receive emails on the basis that we are not liable for any such corruption, interception, tampering, amendment or viruses or any consequence thereof. *********** End of Disclaimer ***********DataPatterns ITS Group********** ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu Click the following link to report this email as spam: https://www.mailcontrol.com/sr/TxPblynaVUbTndxI!oX7UgDvTB1!8f1hO3iobxYRBuJiOEE3wRbpM!rkPrN!qUOHYYeSGHyv6lBICd5VsZuQpQ== ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu