Method and system to prevent voltage sagging in a redundant power supply configuration
First Claim
1. A method for preventing voltage sagging in a redundant power supply system, the method comprising:
- receiving, by a voltage comparator, an input voltage of an Oring-FET and an output voltage of the Oring-FET with the Oring-FET being in a redundant power supply configuration;
comparing the input voltage and the output voltage to determine whether the Oring-FET is faulty during power up;
in the event the input voltage is less than the output voltage during power up, providing, via the Oring-FET, output to a communicatively coupled system bus; and
driving a Vgate of a communicatively coupled overcurrent Oring-FET low or high based on the comparison of the input voltage and the output voltage.
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Abstract
Aspects of the subject technology relate to a system and method for preventing voltage sagging using an Oring-FET in a redundant power supply configuration. Each redundant power supply includes an Oring-FET and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the Oring-FET during power up. In the event input voltage is less than the output voltage, the Oring-FET is deemed to be operating properly and provides output to a communicatively coupled system bus in response to the input voltage reaching a predetermined voltage threshold level. In the event the input voltage is approximately equal to the output voltage, the voltage comparator assists in preventing inrush current from flowing from the communicatively coupled system bus and prevents voltage sagging on the communicatively coupled system bus when another redundant power supply configuration is providing power to the communicatively coupled system bus.
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Citations
20 Claims
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1. A method for preventing voltage sagging in a redundant power supply system, the method comprising:
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receiving, by a voltage comparator, an input voltage of an Oring-FET and an output voltage of the Oring-FET with the Oring-FET being in a redundant power supply configuration; comparing the input voltage and the output voltage to determine whether the Oring-FET is faulty during power up; in the event the input voltage is less than the output voltage during power up, providing, via the Oring-FET, output to a communicatively coupled system bus; and driving a Vgate of a communicatively coupled overcurrent Oring-FET low or high based on the comparison of the input voltage and the output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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a voltage comparator configured to; receive an input voltage of an Oring-FET and output voltage of the Oring-FET with the Oring-FET being in the redundant power supply configuration; compare the input voltage and the output voltage to determine whether the Oring-FET is faulty during power up; and an overcurrent Oring-FET with a Vgate of the overcurrent Oring-FET communicatively coupled to the voltage comparator with the overcurrent Oring-FET configured to; cause the Oring-FET to provide output to a communicatively coupled system bus in the event the input voltage is less than the output voltage during power up. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification