Open loop and Closed loop Model of Boost Converter

Design and implementation of Open loop and closed loop model of Boost converter using MATLAB

Design of Boost Converter:

• Step 1: Given: Vin=12V; Vout=18V; Fs= 25kHz; Pout=20W
• Step 2: To find the value of resistor R=?

= 16.2 Ohms

• Step 3: To find the Duty Ratio, D=?

D= 1 – (Vin/Vout) = 0.3333=33.33%

• Step 4: To Find the value of inductor, L=?

= 48 microH

For operating in a continuous conduction mode, the value of L should be more than the designed value by 25%. Therefore, 60 microH is chosen.

• Step 5: To Find the value of capacitor, C=?

= 16.45 microF

Note, , Which decides the rippling content at the output side.