ZHCSIU6F September 2018 – June 2021 TPS2663
PRODUCTION DATA
Set the VPGTHF threshold at the down-stream DC-DC converter UVLO falling threshold. VIN minimum operating voltage of the DC-DC converter is at 15 V. Assuming UVLO to be at 20% lower level, VUVLO_DC-DC = 12 V. Use Equation 12 to calculate R4 and R5.
V(PGTHF) = 1.14 V. Assuming R5 = 56 kΩ, R4 comes out to be approximately 499 kΩ.