# Fifth Lichuang Electronic Design Competition # Low-cost buck-boost adjustable power supply

#define 0x00 Idea!     The journey of electronics begins with power supply. No matter what development work you are doing, a suitable power supply is essential. Who can use electricity except Iron O-Man? So the design goal this time is to make a power supply suitable for debugging by electronic engineers. First of all, the power must be sufficient. After all, only strong power can produce miracles. Secondly, during the development process, it is always inevitable to explode pipes and set off firecrackers due to short circuit, so flexible and rapid output protection is needed. Third, you can’t choose a preamp, as all common power adapters from 12v to 24v can be accommodated. Fourth, it needs to be small, and it needs a small steel cannon. Say no to the unbearable weight in your backpack. Fifth, the potentiometer will wear out, no! The encoder feels great in the hand. OK! Our CNC is really awesome! Sixth, it’s cheap! One hundred free shipping! No more! Economical and practical power supply! In several years of use, I have found no adjustable power supply that meets these conditions. In line with the principle of doing it yourself and having enough food and clothing, I do my best and hope to make the products I want. a #define 0x01 Preview!     From the above customer (zi) needs (ji), summarized and summarized in professional terms, this is the product: 1.IO: input 12-24v, output 0-30v, maximum current 5a, maximum power 120w. The output needs to be stable enough. 2. The BOM cost is controlled within 100 yuan, and the components are replaceable. Try to use patch components to facilitate SMT processing. 3. CNC digital display supports external program control and has good expansibility. 4. The volume should not be too large, and the mold shell should be used.

#define 0x02 Producer!       hbozyq: an unknown engineer outside the industry, an honorary professor at his own university, and the individual marketing director of Xianyu. Currently in my third year of undergraduate studies.