Chopper (DC–DC converter) efficiency Is a DC chopper generally considered a high-efficiency power conversion circuit compared to linear regulation?

Introduction / Context:
Choppers (switch-mode DC–DC converters) use high-frequency switching to adjust average voltage and current with low dissipation, unlike linear regulators which burn off the voltage difference as heat.

Given Data / Assumptions:

• Idealized high-efficiency switches (MOSFETs/IGBTs) with low conduction and switching losses.
• Properly designed magnetics and filters.
• Continuous conduction typical but not mandatory to assert general efficiency.

Concept / Approach:

Switching devices operate either fully on (low voltage drop) or fully off (very low current), minimizing instantaneous power dissipation. Energy transfer via inductors/capacitors allows power processing with small losses, resulting in typical efficiencies often above 90% in practical designs.

Step-by-Step Solution:

Verification / Alternative check:

Industry benchmarks for buck/boost converters routinely show 88–97% efficiency ranges under optimal conditions.

Why Other Options Are Wrong:

Limiting high efficiency to only low current or only high input voltage is incorrect; efficiency depends on design, not solely on these variables.

Common Pitfalls:

Ignoring switching and gate-drive losses at extreme frequencies or neglecting inductor core losses which can reduce efficiency if poorly selected.

Final Answer:

True