Bibliographic Details
| Title: |
Move to 12V bus eliminates need for isolated dc/dc converters. |
| Authors: |
Modi, H. R.1 |
| Source: |
EDN (0012-7515). 10/27/2005, Vol. 50 Issue 22, p83-84. 2p. 2 Diagrams, 3 Charts, 1 Graph. |
| Subjects: |
Power resources, Integrated circuits, Computer input-output equipment, Computer architecture, Microprocessors |
| Abstract: |
This article focuses on the benefits of the lower voltage 12-volt bus in powering the integrated circuits scattered on and across the multiple computer boards in a system. The next emerging trend, driven by technology-conversion advances and cost considerations, is the shift from a 48-volt to a 12-volt distribution bus and the resulting elimination of the onboard isolated direct current/direct current converter. The migration from multiple output-power supplies, driven by the lower voltage and higher current requirements of the latest microprocessors, has reached a point at which today's systems exclusively use a single 48-volt front-end power supply with final conversion to the lower voltages done on the computer board. The increasing converter-power densities and the resulting converter- size reductions are major reasons for the rapid adoption of a distributed-power architecture. |
| Database: |
Engineering Source |
