JAJSE93B March 2016 – November 2017 LM5161
PRODUCTION DATA.
The secondary side rectifier diode must block the maximum input voltage reflected at secondary side switch node. The minimum diode reverse voltage V(RD1) rating is given in Equation 20:
A diode of 100-V or higher reverse voltage rating must be selected in this application. If the input voltage (VIN) has transients above the normal operating maximum input voltage of 72 V, then the worst-case transient input voltage must be used in the Equation 20 while selecting the secondary side rectifier diode.