Why is the efficiency of linear power supply relatively low?
1. Explain the working method and principle of a switching power supply through examples
2. Provide examples of the differences between the working modes of switch mode power supplies and linear power supplies
3. Analyze and explain why linear power supplies have lower efficiency and switch mode power supplies have higher efficiency?
4. Explain how switching power supplies achieve energy transfer? And how to achieve stable voltage output? How to adjust it? Why do changes in input voltage and load affect regulation? Why is there ripple generated? Why is speed response an important indicator for measuring switching power supplies?
5. Detailed analysis of how switch losses are generated? How to control temperature rise? What are the hazards of temperature rise to the system?
What is the relationship between the volume and frequency of a switching power supply? And the efficiency issue of switch mode power supply.
How to choose switch devices? Detailed analysis of the strengths and weaknesses of MOSFET, IGBT, and transistor.
8. Detailed derivation of the BUCK circuit topology for switching power supplies.
9. Introduce important components in important analog circuits: inductors.
10. Explain in detail the formation and formula calculation of inductor voltage, and what parameters affect inductor voltage? How to change the voltage across the inductor?
11. Provide a detailed explanation of the relationship between the voltage of an inductor and the magnitude and rate of change of the current in the inductor. Why is it said that the magnitude of inductor current is continuous while the rate of current change is discontinuous?
12. Provide a detailed explanation of the three modes of current waveform in inductors.
Why is it said that the inductor current changes after being powered on and off? What is its underlying root cause?
How to achieve energy conservation of inductance? Why is it said that only when the inductor current reaches a stable state can it be used for us? How to achieve controllable changes in inductor current?
15. Explain specialized terms in BUCK circuits and understand the impact of key parameters on design.
16. Provide a detailed explanation of the derivation of the duty cycle formula.
17. Provide a detailed explanation of the derivation process of the inductance parameter calculation formula.
18. Several summaries of BUCK topology.
19. Provide practical examples to calculate inductance parameters on site.
20. Provide a detailed explanation of the various functional modules inside the power control chip.
21. Through practical demonstration, measure relevant waveforms on site using an oscilloscope and analyze and debug them.
