I decided to remove some of the PCB lanes and replace them with high current wires to support 50A currents. I had to extend the board ca 1.5mm at right, but to compensate I also remove the connectors because I need high current support all the way. I like having connectors for <10A solutions and…
Always funny to share 3D models. This shows the right side of the new 60V Universal Motor Controller. I have spaced out the MOSFET channels and moved all components top-side as well as added 2 temperature sensors, a new 60V DC/DC, capacitors on board and enabled JST channel connectors. I have routed 1 channel, but…
This show the new current sensor with INA194. The main reasons for changing to INA194 is that this supports -16 to +80V sensor range on high side + the chip is SO23-5 package that is a bit easier to mount than INA210 was. C15 is a filter capacitor mounted as close to the shunt as…
One of the changes on the new MC4X design is that I space out MOSFET a little and add 2 temperature sensors on the PCB located between 4 MOSFET’s. I use MCP9700 in SO23-3 package that is just the right size. Adding to of this monitoring 4 MOSFET’s each should be work out better than…
Using 100x40mm as format I actually seem to be able to move all components top-side and still add caps on board. I am not sure about density around MCU yet, but this is one driver. The weak links are as always the current paths, but I think this will be ok for 15-25A. This is…
This is just a simple block diagram over MC4X design to illustrate it’s components and summarize the planned changes. More communication ports CAN and RS485. I hope to save some space and add more communication ports to support redundancy etc. New PSU based on TPS54x60 providing 14-60VIN or 10-16V in. Support 10-12V for Gate driver,…
The 40V or 30V or 26V – ouch limits have always annoyed me, so with new MOSFET’s, current sensors and PSU I change to 60V design. Making Space for SOP Advance I can always use SOP and 30V MOSFET’s anyway. I finally found several temperature sensors in SOT23 package, so I ordered 2 different ones…
This shows my new driver circuit. I added R43 and R44 as weal pulldown’s to avoid that the MOSFET start leading by accident at power up. If I get space limitations I will rather remove R1 and R2. This will make it safer to put power on a Motor Controller in case the Gate Driver…
I still want to test more with rev 1.0 of MC4X24V15A, but I am also planning an upgrade. I initially drew a rev 1.1 using 78M12, but I will replace LMR14206 with TPS54x60 and AMS1117 with SPX3819. That will increase range to 60V which basically means 48V. I do have the challenge that I also…
Searching on Arrow’s pages I found 3 MOSFET’s in SOP Advance package that have insane ratings. 2. 40V 246A Rds=1mOhm 1.2 USD 3 45V 280A Rds=0.8mOhm 1.4 USD 3. 30V 280A Rds=0.65mOhm 1.3 USD Actual limit is more like 150A with a pulse drain of 500A in accordance to datasheet. But, look at the RDS…