MPM3683-10 vs MPM3683-7

DC-DC Power Converters
1

Hi MPS team,

At he moment we are using the MPM3682-7 to convert 5v to 0.9V. This part is NRND and to mitigate the risk we are looking at the MPM3683-10.

I have already found that the footprint is different and the output current is higher. Are there any other specification differences between these parts that I should consider?

Best regards,

Michel Wouters

2

Hello Michel,

Other than the footprint and the higher output current at 10A, here are some other differences between the MPM3683-10 and MPM3682-7:

  • For the MPM3683-10, the max recommended input voltage here goes up to 16V whereas the MPM3682-7 goes up to 18V.
  • For the MPM3683-10, the thermal junction resistance is 5.1 degrees Celsius per Watt whereas the MPM3682-7 has 6.3 degrees Celsius per Watt.
  • Quiescent current is 650uA for the MPM3683-10, 860uA for the MPM3682-7.
  • Shutdown current is 10uA for the MPM3683-10, this figure is not specified for the MPM3682-7.
  • MPM3683-10 has selectable switching frequencies at 600kHz, 800kHz, and 1MHz where MPM3682-7 is programmable switching frequency from 200kHz - 1MHz.
  • See the efficiency graphs between these two modules. The MPM3683-10 is marginally higher in all cases.
  • There are many small differences as well, but these would be the more notable ones that can factor into your design.

Hope this provides some insight.

Best,

Krishan