BUCK circuit topology
T is a fully controlled element (GTR, GTO, MOSFET, IGBT). When T is turned on,
D is a freewheeling diode.
L and C form an LPF.
2. Working Principle
IV. Assumptions and parameter calculations
1. T and D are both ideal devices
2. L is large, so that the current is continuous and has no internal resistance in one cycle
3. The DC output voltage U0 is constant
4. The entire circuit has no power consumption
5. The circuit has reached steady state
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