| 摘要 |
A power supply has a digital input to receive Voltage Identification codes (VID codes). A microprocessor within the power supply reads the VID codes and outputs, in response to the VID codes, a digital to analog converter code (DAC code). A digital to analog converter receives the DAC codes, and outputs a reference voltage. A DC to DC unit receives the reference voltage and also receives power from a standard power supply, and the DC to DC unit generates output power at a selected output voltage in response to the reference voltage. A test stand measures the output voltage, and the test stand adjusts the DAC code generated by the microprocessor in response to the VID code in order to supply power at the desired output voltage by the power supply, in response to a desired input VID code. The test stand adjusts the DAC code generated by the microprocessor in response to the VID code so that a particular VID code causes the DC to DC unit to generate output power at the voltage specified by the VID code.
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