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PMBus Trends

By Sam Davis, Sam Davis

January 12, 2006

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  • Increasingly, computer-based systems employ digital control of power supplies to improve power-management flexibility, maintainability, and reliability.
  • Standardized PMBus commands encourage semiconductor and powersupply manufacturers to develop the appropriate technology to control a power supply's operating parameters, monitor its operation, and perform corrective measures in response to faults or operational warnings.
  • Starting with 45 executable commands, the PMBus specification will expand as new technologies and circuit configurations evolve.
  • Semiconductor and power-supply manufacturers use Windows-based
  • GUIs to support PMBus designs.
  • Evaluation boards help designers understand PMBus operations.
  • The greater use of online design and simulation tools helps to optimize power-supply operation and verify its performance.
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