ZHCSG44G June 2017 – January 2025 TPS650864
PRODUCTION DATA
Any rail can be sequenced by the Power Good of a prior rail. The PG method can be combined with the CTLx method to allow for further sequence control and create more distinctive groups of enables than the six from CTLx. Using a combination of the methods also allows some of the CTLx pins to be freed up for other purposes such as logic input gates. For a demonstration of this feature, Figure 7-24 shows how the BUCK5 is enabled from the BUCK4 PG.
Figure 7-24 Generic Power-Up Sequence Example