Overview: Bob Pease, famous for his
opinions on analog vs digital design, and also for throwing computers off
the top story of the parking structure to protest "digitalism",
will present an on line seminar for your viewing pleasure on December 6,
2001. Bob and Chance Dunlap will discuss the use of switching controllers
in DC to DC power supplies. You will not only hear how to design power supplies,
but you will also hear Bob's often humorous views on how they fit into our
analog world.
Switching controllers have the advantage of allowing a high degree of
optimization and customization in a power supply, however, implementation
can be complex. In this presentation, you will be guided through the entire
design procedure including selection of the controller and associated
components, optimization of the power supply and common pitfalls and how
to avoid them. You will learn how to reach a solution in a minimum amount
of time while also achieving the desired results. Previous knowledge of
switching controllers and power supply design is not required.
The talk features the LM3478 and LM3488 parts, which are current mode,
low side N channel FET controllers. They can be used in numerous configurations
including Boost and SEPIC (Single Ended Primary Inductor Converter) topologies.
This presentation will show methods to modify the design and optimize
the circuit for a different load current, efficiency, switching frequency
or cost/performance operating point.
Length: 60 minutes
Published Date: December 2001
Topics covered in this online seminar include:
- Controllers vs Simple Switchers
- Controller selection
- Passive component selection
- Inductor
- Output capacitor
- FET
- Switching frequency tradeoffs
- Current limit protection
- Stability issues and the Bode Plot
- Current mode control scheme - prevention of sub harmonic oscillation
- Common problems and solutions
Presenters: Bob Pease obtained
a BSEE from MIT in 1961 and is Staff Scientist at National Semiconductor
Corp., Santa Clara, California.
Chance Dunlap got his BSEE degree from Purdue University. He is
an applications engineer working in National Semiconductor's Power Management
Group. Chance specializes in references, supervisors and switching regulators
and controllers.
|
| Click on
Icon to Register or View Event |
|
Download:
Presentation
(pdf 122KB)
|
|
