JAJSKM1C october 2019 – september 2021 UCC5870-Q1
PRODUCTION DATA
The OUTH and OUTL outputs provide split gate drive to customize the turn-on and turn-off rates to customize applications for limiting noise and ringing. A resistor from OUTH and from OUTL to the gate of the power transistor set the rise/fall time of the gate drive to the power transistor. To set the rise time, select the resistor (RG) for OUTH and OUTL to the gate according to the following equation:
Where LS is the inductance of the gate and Q is the quality factor between 0.5 (critically damped) and 1 (under damped). See SLLA385 (https://www.ti.com/lit/pdf/slla385) for additional information on gate resistor design. It is required that the value or RG must be greater than 1.5Ω for both OUTH and OUTL.