I have a regulated power supply with rating 17V@900mA. The LED display is attached to it and consumes maximum current of 600mA @17v. I have to attach ESP12F WiFi module to it which requires 3.3V @ 500mA.
The DC DC converter in the market can solve the purpose, but how reliable they are and can ESP12F sufficiently draw current from it? Is remaining 400mA sufficient to drive DC DC converter?
I am considering this cheap inexpenisve module based on Monolithic Power System's IC MP1584