2. Module 2: DC-DC Converters
lecture 1: Non-Isolated DC-DC converters
lecture 2:  Isolated DC-DC converters-I
lecture 3: Isolated DC-DC converters-II
lecture 4: Isolated DC-DC converters-III
3. Module 3: Voltage Source Converters and their modulation techniques
lecture 1: Non-Isolated DC-DC converters  
Further Reading:
 Modulation Techniques for VSIs:
1. Square Wave Modulation
2. Pulse Width Modulation (Unipolar/Bipolar)
3. Hysteresis Current Control Technique
4. Space Vector Modulation
5. Selected Harmonic Elimination