{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

472 Lecture 5 Boost converter

# 472 Lecture 5 Boost converter - Lecture 5 Steady state...

This preview shows pages 1–7. Sign up to view the full content.

Lecture 5 Steady state analysis of boost converter • Boost converter analysis • Design of power stage • Bi-directional converter EEE 498/591 – Raja Ayyanar

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
+ Boost (step-up) converter + i L + _ v L V in S 1 D 1 + _ v A i C I o + _ V o D q A A C R L q A 1 0 0 V o v A DT S ( 1-D ) T S ( 1-D ) V o ( ) ( ) since 0 1 A in L A o v V v v D V = = = - 1 1 o in V V D = - Input-output relationship for Boost converter EEE 498/591 – Raja Ayyanar
q A 1 0 V o v A t DT S ( 1-D ) T S 0 Boost converter – waveforms (CCM) + i L + _ v L V in S 1 D 1 + _ v A i C I o + _ V o D q A A C R L ON interval i D A q D = ( ) 1 A o v D V = - v L V in -V o V in 0 1 in V m L = 2 in o V V m L - = i L 0 ( ) 1 o L in I i I D = = - D o i I = i D 0 i C 0 ( )( ) ( ) ( ) 1 0 1 1 1 1 in s in o s in o o in V DT V V D T V D D V D V V D + - - = + - = - = - -I o EEE 498/591 – Raja Ayyanar

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Selection of L 0 v L V in -V o V in i L 0 L I D I in Consider the T ON interval ( ) 1 L in o S I L V V D DT D = = - ( ) 1 o S L V D D T L I - = D • L selected such that inductor current ripple is about 10-20% of max. I in • Design for worst case condition • CCM considerations Peak-peak ripple in inductor current DT S EEE 498/591 – Raja Ayyanar
i C 0 Selection of C -I o I in -I o • Choose C based on RMS current requirement ( capacitor RMS current can be larger than load current ) • Verify if specification is satisfied with the chosen C and ESR values

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern