Scope of application of¶≤® switching power supply

Applicable to the full voltage rangeα"±♠, no voltage drop is requ✘₽♦ired, and different circα ↔♥uit topologies can be £×used to achieve differeπ"&nt output requirements. Regulation and out<'≈♦put ripple are not as good as linear power‌→ supplies, with high effi‍£✔ciency. Many peripheral componentσσs are required, and the cost₩‍ is high. The circuit is relative'≤γly complex. The main circuit types of switching‍✘& DC regulated power supply are s€÷ingle-ended flyback, single-ended forward, h♦₽≥₩alf-bridge, push-pull and full-bridge.₹λ↑ The fundamental difference betwee✘σ♦εn it and the linear regulated power supply is∏∏↔ that the transformer in the cir♦​✔cuit does not work at the powe∏Ωr frequency but works at ♥±★tens of kilohertz to several megahertz. The ←&↓♣power tube does not w✔​ork in the linear region, but in the saturation ×✘ and cut-off region, that is, it worksδ✘§≈ in the switching state; the switch‍≥‍ing DC regulated power su☆÷♠<pply is also named for this.

Scope of application of linear power supply

Linear regulated power su​¥♠↑pplies are often used in low-voltage a→γpplications, such as LDOs tha✘₩t need to meet a certain volta€πge difference. The out₽$put voltage regulation rate and r÷£ipple are relatively good, the efficiency £₽is relatively low, the requir©≥β¥ed peripheral components are π​≤relatively small, and the cost ↕♠ ₩is low. The circuit is relatively simple.