ZHCS901E May 2012 – September 2021 TPS55340
PRODUCTION DATA
The selected diode must have a minimum breakdown voltage (VBR) calculated with Equation 51 which is 30.5 V in this design. The average current rating is recommended to be greater than the maximum output current. With the maximum 18-V input, average current is calculated to be 2.6 A using Equation 17. The package must also be capable of handling the power dissipation. With an estimated 0.5-V forward voltage, power dissipation is calculated with Equation 26 to be 500 mW. Diodes Inc B340B is chosen with a 40-V, 3-A rating in an SMB package.