SLUSD49A September 2017 – January 2019 UCC256303
Refer to the PDF data sheet for device specific package drawings
RVCC capacitor needs to be at least 5 times of boot capacitor. In addition, sizing of the RVCC capacitor depends on the stability of RVCC LDO. If load is light on RVCC, smaller capacitors can be used. The larger the load, the larger the capacitor is needed. In a typical system, the RVCC LDO powers the PFC and LLC gate drivers. The plot below shows the worst case RVCC LDO phase margin versus RVCC capacitor for various load currents. RVCC capacitor should be sized based on the figure below.