Power Converter Design Principles (KPI course text, 2010)
A compact design-oriented account of converter specification, switch selection, control, protection, magnetics, cooling, and verification. Its value is the coupled design workflow rather than any historical component recommendation.
This eight-page KPI text treats converter design as an iteration across electrical, magnetic, thermal, mechanical, and control constraints. The useful sequence is to define operating and fault envelopes, choose a topology, quantify semiconductor and passive stress, design gate drive and protection, close the regulation loop, and verify the complete assembly under representative source and load conditions.
What survives #
A component rating is not an operating envelope. Voltage margin must include overshoot and transients; current margin must include ripple, startup, short-circuit response, and reverse recovery; thermal design must use the full junction-to-ambient path and transient impedance; magnetic design must check flux excursion and copper/core loss; and control must remain stable across line, load, mode changes, limits, and delays.
The text also correctly treats protection as a separate mechanism. Cycle-by-cycle current limiting, desaturation or overcurrent detection, undervoltage lockout, overtemperature response, DC-link protection, and safe discharge cannot be inferred from the normal feedback loop.
Visual audit #
Two source diagrams summarize the design workflow and converter structure. They are conceptual and contain period-specific notation, so they are redrawn where used. The scans do not contain a physical construction or field pattern that would justify preserving them as raster assets.
Limits #
Numerical design rules and technology comparisons are time-sensitive. GTK uses the source for the dependency graph between stresses, losses, cooling, control, and protection, while current datasheets, application notes, and standards supply actual values and qualification boundaries.