The benefits of a shift from 48V to 12V.
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| Title: | The benefits of a shift from 48V to 12V. |
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| Authors: | Modi, HR1 |
| Source: | Electronics Weekly. 11/23/2005, Issue 2219, p22-24. 2p. 2 Diagrams, 3 Charts, 1 Graph. |
| Subjects: | DC-to-DC converters, Integrated circuits, Voltage regulators, Power transmission, Cost effectiveness, Reduced instruction set computers, Electronics, Microelectronics |
| Abstract: | The article focuses on the benefits of migrating from a 48V to a 12V distribution bus that eliminates need for isolated DC-DC converters. Powering the integrated circuits scattered on and across the multiple PCBs in a system has always presented challenges to power-supply designers. As long as the required voltages were relatively high, it was possible to locate the power conversion in a remote area of the system, where thermal and noise management was easier. The next emerging trend, driven by technology-conversion advances and cost considerations, is the shift from a 48V to a 12V distribution bus and the resulting elimination of the onboard isolated DC-DC converter. The distribution of a higher 48V-bus voltage at lower currents allows for smaller traces and connectors. Mainframe computers have for many years used such power-distribution methods. |
| Database: | Engineering Source |
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| Abstract: | The article focuses on the benefits of migrating from a 48V to a 12V distribution bus that eliminates need for isolated DC-DC converters. Powering the integrated circuits scattered on and across the multiple PCBs in a system has always presented challenges to power-supply designers. As long as the required voltages were relatively high, it was possible to locate the power conversion in a remote area of the system, where thermal and noise management was easier. The next emerging trend, driven by technology-conversion advances and cost considerations, is the shift from a 48V to a 12V distribution bus and the resulting elimination of the onboard isolated DC-DC converter. The distribution of a higher 48V-bus voltage at lower currents allows for smaller traces and connectors. Mainframe computers have for many years used such power-distribution methods. |
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| ISSN: | 00135224 |
