Fix circuit power problem

Closed Posted 4 years ago Paid on delivery
Closed Paid on delivery

I have designed a circuit to keep the heating element at a constant temperature. The digital part of the circuit is being feed from a 5V LDO which is powered by two 18650 batteries in series and the heating element is directly connected to the output batteries. Also heating element wire(approximately 2ohm) is controlled with an N channel low side mosfet by the microcontroller.

When controller toggles the mosfet because of the voltage drop on the supply.

The highest supply voltage for the system is between 6V-8.4V and load uses 2A. The problem is becomes more significant when the supply voltage gets lower. I don't think that any inrush current situation occurs because voltage continues to stay below 5V at the output of LDO as long as the load is active. Also i tried with both batteries(which can supply 20A) and a lab bench power supply but same problem occurs.

Circuit Design Electrical Engineering Electronics Microcontroller PCB Layout

Project ID: #21798014

About the project

14 proposals Remote project Active 4 years ago

14 freelancers are bidding on average $193 for this job

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