TCPP03-M20 using Mosfet driver outputs for logic control

[mikeho]

Hello,

I'm using TCPP03 for a DRP solution. For my design it would be good to use the Mosfet drivers for controlling a logic input for further power control instead of using Mosfets. Is it possible to use the gatedrivers with the SRC-pins connected to Ground and feed the GATE-Pins to an input of a logic device? I'm aware that I have to take care for the logic level translation.

I did already tests and it worked so far. Just to get safe that there will be nor furhter impacts, I want to know your suggestion for this.

Regards

Michael Houzer

[MROUV.1 · Accepted solution]

Hello Michael,

Your case is clear and TCPP03-M20 match to your needs.

To rephrase, TCPP03-M20 SOURCE and SINK gate drivers must drive logical levels.

SOURCES are connected to the GND.

GATES (5.0V output voltage) can be connected to :

• 5V HZ input
• 3.3V HZ input with rail-to-rail structure that let the gate driver current flows (<50µA)
• 3.3V HZ input FT
• 3.3V HZ input with 3.3V Zener to limit voltage that let the gate driver current flows (<50µA)

There is no TCPP03-M20 restriction for this case.

Best regards,

Mathieu