Power backplane with distributed hotspot detection grid

A method, comprising:

• distributing a plurality of passive temperature sensors and a detection circuit on a printed circuit board, the detection circuit connected to an output of each of the plurality of passive temperature sensors;
• sensing, by at least one passive temperature sensor of the plurality of passive temperature sensors, an increase in temperature on the printed circuit board;
• receiving, by a detection circuit, a voltage level on an output of the at least one passive temperature sensor;
• detecting, by the detection circuit, the increase in temperature on the printed circuit board;
• and
• sending, by the detection circuit, a shut down signal to a kill switch device on the printed circuit board, the kill switch device configured to turn off the one or more power supplies when triggered.

A method, comprising:

• distributing a plurality of passive temperature sensors and a detection circuit on a printed circuit board, the detection circuit connected to an output of each of the plurality of passive temperature sensors;
• sensing, by at least one passive temperature sensor of the plurality of passive temperature sensors, an increase in temperature on the printed circuit board;
• receiving, by a detection circuit, a voltage level on an output of the at least one passive temperature sensor;
• detecting, by the detection circuit, the increase in temperature on the printed circuit board;
• and
• sending, by the detection circuit, a shut down signal comprising sending the shut down signal to a kill switch device in each of the one or more power supplies, the kill switch device configured to turn off the respective one of the one or more power supplies.