If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
D-CAP(TM) Mode With All-Ceramic Output Capacitor Application
The TI D-CAP™ Mode controller is widely used in computing power management. D-CAP™ Mode requires an appropriate amount of equivalent series resistance (ESR) on output capacitors to ensure the loop stability. However, many customers prefer to use a low-ESR capacitor such as a ceramic output capacitor. Sufficient output ripple, however, may not be available in this case to ensure the system stability. This application report introduces an implementation of D-CAP™ Mode with all-ceramic capacitor application using a ripple injection approach. First, the basic D-CAP™ Mode operation is described. Then, the ripple injection approach is introduced to ensure system stability. Last, the step-by-step components selection procedure is provided. The performance of TPS53219EVM with all-ceramic output capacitor using ripple injection approach is demonstrated. This ripple injection approach can be applied to TPS51116, TPS51117, TPS51315, TPS51218, TPS53219, and other single D-CAP™ Mode controllers with low- output voltage application.
