To begin the design process, the following component values must be selected:
- Inductor
- Choose the appropriate value of the inductor based on application cost requirements, ripple requirements, and Section 7.3.11.
- BOOST capacitor
- Choose the appropriate BOOST capacitor value based on application cost requirements, ripple requirements, and Section 7.3.11.
- Diodes
- The D0 and D2 diodes are used to help meet the surge-protection requirement of the application. If the application does not require
surge protection, remove these diodes. For diode component selection, refer to Section 7.3.11.3.
- The D1 diode is used for the boost loop. A Schottky diode is recommended for D1. The application requirements, which include
input power range, output power range, and the current requirement, determine the current and voltage capability of the D1 diode.
- The D3
diode is to help with the output protection for the VLNB voltage. A Schottky diode is recommended for D3. The application requirements determine
the current and voltage capability of the D3 diode.