UCC27519A-Q1: Please review the schematic

Hey Chase,

Thank you for reaching out to TI with your questions regarding the UCC27519A-Q1.

Please see the attached Schematic Review Template for reference.

3364.UCC27518_9 Schematic Review Template.xlsx

Here are a few notes:

1. The EN pin can be left floating as it will internally pull high, or you could connect it to VDD to always enable the driver. If you want to be able to disable the driver, it will need to be connected to a controller pin.

2. The IN+ pin is advised to have an RC filter on it with a 0-100 Ohm resistor and a 10-100pF capacitor placed close to the driver to ensure a clean square wave input to the driver.

3. The gate resistor value of 1kOmh is much larger than typical and will greatly slow down the switching transitions of the transistor. This is okay if the slow transitions are acceptable but this is typically of value <100 Ohms.

4. The gate-source capacitor (C31) is 100nF which is a very large parallel load to the transistor. This will greatly slow down the transition times as well. This part is typically <10nF if it is included and is often not needed but it is good to have provisions for it.

5. Your component sizes are larger than typical for these circuits. Often the resistors that you have populated are 0603 which will help optimize layout and the VDD bypass capacitors are 0603 for the 100nF and 0805 for the 1uF.

Let me know if there are any questions.

Thank you,

William Moore