ZHCSG44F June 2017 – October 2024 TPS650864
PRODUCTION DATA
To design a 5-V input application, first provide a step-up voltage from the 5-V input to the VSYS. Design the step-up to output a voltage near 5.8 V. Next, route the 5-V input to the controller and converter VINs. Thus, all power paths (all high currents) are routed through the controllers or directly to the converters. None of the high currents are required from the step-up supply. After the input stage is complete, the rest of the system can be designed as normal following the typical application procedure, using 5 V as the input value to the controllers.