Joe, Generally, load sharing is accomplished by either a droop method where the outputs will share current based on the common output voltage; or by active control (typically using the remote sense leads); or through active load share controllers like the Linear Tech LT4350 which use series MOSFETs to regulate the individual currents. Multiple regulators are isolated to a common bus by diodes or active diode controllers. Short circuit protection is regulator specific. Some will release smoke and better regulators will have fast (cycle-by-cycle) current limiting and perhaps fold-back. Mike -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of joe jose Sent: Tuesday, September 04, 2012 1:06 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] load sharing in DC DC Controllers Hi All, I would like to know the fundamentals of load sharing happens with DC DC controllers. My question is like I have 2 DC DC controller of same O/P and I/P condition. 1. Is it possible for me to short the O/P of all the two regulators? 2. How the current sharing is happening between the devices 3. As per my assumption, it is not recommend to parallel the device. 4. Can anybody give me the details of the current flow between all these regulators. Thanks, Joe ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list 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 _______________________________________________________________________ This e-mail and any files transmitted with it are proprietary and intended solely for the use of the individual or entity to whom they are addressed. If you have reason to believe that you have received this e-mail in error, please notify the sender and destroy this email and any attached files. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of the Curtiss-Wright Corporation or any of its subsidiaries. Documents attached hereto may contain technology subject to government export regulations. Recipient is solely responsible for ensuring that any re-export, transfer or disclosure of this information is in accordance with applicable government export regulations. The recipient should check this e-mail and any attachments for the presence of viruses. Curtiss-Wright Corporation and its subsidiaries accept no liability for any damage caused by any virus transmitted by this e-mail. ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list 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