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LM257 Boost Converter to 12V

Freelancer

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placeKE home_work远程 assignment合同制 public聚合职位 · KE

event发布于 2026年8月24日 · verified我们于 2026年8月31日 确认该职位仍然有效

US$ 250 – US$ 750 (每个项目)

职位介绍

I need a compact boost-converter design built around the LM257 that will take an input anywhere between 3 V and 5 V and reliably produce 12 V. The main objective is simply to raise the voltage—efficiency tweaks are welcome, but only if they keep the 12 V output rock-solid. Please size and choose every supporting component, show the calculations that justify your values, and package everything so I can reproduce or tweak the design later. A quick simulation (LTspice, Proteus, or similar) or bench data that proves the circuit holds 12 V ±5 % across the full input range will close the loop. Deliverables • Annotated schematic (PDF + native CAD) • Bill of materials with readily available parts • Short design note covering formulas, expected efficiency, and a simple test plan Once the documentation demonstrates a stable 12 V from any 3–5 V input, the job is complete.

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