Note that I had to run the electronic load in “Constant Resistance” mode for this particular load point, as setting it to constant current @1.6A caused the MPM3650 to switch off its output permanently, and thus I couldn’t capture the behavior in an image easily.
In all other cases, the load was set to constant current mode.
It is very strange to me that it shuts off only at ~1.6-2.0A, but not at the higher currents… I will need to check with the PL. This will take a couple of days.
Thank you Vinh.
I can’t try SW node captures as this device has an integrated inductor, SW node is not available externally.
I’ll aim to try the altered R3 and R4 values in the coming week. Please keep me posted on your progress too.
Thank you Vinh, great to hear you’ve identified the source of the issue.
May I ask when the next MPM3650 revision is planned?
I intend to switch to the MPM3630 in our next PCB revision, as I have the EVM for it, and it appears to be working very well in our application. However, it would be great to know when a revised MPM3650 would be available, as it would allow us to use our current PCB’s. It’s a great device too in terms of high current output in a small package, and ease of use, so it’d be great to have the option to use it with variable loads in the future.
Our next revision for this device will be around 2-3 months. If you would like more business/technical support please reach out to MPS NOW Remote Support.
Hi Vinh,
I was just wondering if you had any updates regarding the next revision of this device?
Will the next revision have a new part number, suffix, or another way to identify newer Vs older revisions?
Hi Vinh, I’m considering using this device again in a different application - has the new revision been released, correcting this bug relating to the DCM and CCM transition?