Method and apparatus for supplying power to 300 PIN MSA 40Gb transponder

摘要

A method and an apparatus for supplying power to a 300 PIN MSA 40 Gb TRANSPONDER (22), wherein the apparatus comprises a power supply control module (21), a first resistor (R2), a second resistor (R3) and a third resistor (R4). The power supply control module (21) supplies power to the TRANSPONDER (22) through the APS Digital pin (APS Digital) of the TRANSPONDER (22). A reference voltage terminal (Vfeedback) of the power supply control module (21) is connected to the APS Sense pin (APS Sense) of the TRANSPONDER (22) by the second resistor (R3), connected to the APS Set pin (APS Set) of the TRANSPONDER (22) by the first resistor (R2) and connected to the bias voltage terminal (Vbias) of the power supply control module (21) by the third resistor (R4). The method and the apparatus can increase selection of the power supply control module (21) without occupying excessive space of circuit board, while ensuring precision of supply voltage.

主权项

1. A method for supplying power to a 300 PIN MSA 40 Gb TRANSPONDER, comprising:
a power supply control module supplying power to the 300 PIN MSA 40 Gb TRANSPONDER through a APS Digital pin of the 300 PIN MSA 40 Gb TRANSPONDER; a reference voltage terminal of the power supply control module connecting to a APS Sense pin of the 300 PIN MSA 40 Gb TRANSPONDER by a resistor R3, connecting to a APS Set pin of the 300 PIN MSA 40 Gb TRANSPONDER by a resistor R2 and connecting to a bias voltage terminal of itself by a resistor R4, wherein the resistance values of the resistors R2, R3 and R4 are determined according to a preset grounding resistance of the APS Set pin and a specified input voltage of the APS Digital pin.