This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi Team
Currently using 24612 on the new board, there is a problem: Gate cannot be opened normally as shown in the figure below (load0.5A-5A cannot be used)
Using UCC24612-1EVM on customer board can be opened normally, but after replacing the MOS of UCC24612-1EVM, it cannot be opened normally
Does this IC have special requirements for MOS? Is it possible to adjust the peripheral parameters to improve this phenomenon?
*REG measurement is normal
*VCC measurement is normal
Hi user,
which Mos part number you changed?
for UCC24612 application, the mosfet Rdson should be higher than 4.5mohm for correct detecting.
Hi Cheng,
the EVM uses 19mohm mosfet with SMD package, and customer uses 5.8mohm with TO-220 package.
because of pin inductance, the controller may not be able to preciously detect the VDS, please try to change to 5*6mm or 8*8mm
package and increase a little Rdson to see whether it improves.