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Power supply module and power supply system with sequential smart activation/deactivation based on load

  • US 9,703,363 B2
  • Filed: 07/26/2011
  • Issued: 07/11/2017
  • Est. Priority Date: 08/03/2010
  • Status: Active Grant
First Claim
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1. A power supply module used as a first power supply module in a computing system which further comprises a second power supply module, the first power supply module being in a power supplying state and the second power supply module being in an off state, the first power supply module comprising:

  • a load detection unit configured to detect load of the computing system to generate a load detection value;

    a determination unit connected to the load detection unit and configured to generate determination information based on the load detection value for determining whether to turn on the second power supply module or not; and

    a turn-on/off unit configured to send a power supply on (PSON) signal to the second power supply module when the determination information indicates that the second power supply module is to be turned on,wherein the second power supply module is turned on in response to the PSON signal, such that the turned on second power supply module and the first power supply module supply power to the computing system in parallel,wherein the load detection unit comprises a current detection unit configured to detect an output current from the first power supply module itself and generate a current detection value as the load detection value,wherein the determination unit is configured to determine to turn on the second power supply module when the current detection value is larger than a first current threshold, andwherein the second power supply module in turn selectively determines whether to turn on a third power supply module so as to supply power to the computing system in parallel with the first and second power supply modules.

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