![buck - Why is the efficiency of this LED driver circuit so low? - Electrical Engineering Stack Exchange buck - Why is the efficiency of this LED driver circuit so low? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/5598h.jpg)
buck - Why is the efficiency of this LED driver circuit so low? - Electrical Engineering Stack Exchange
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High efficiency 300mA 8 25*1W DC 36V ~ 80V Led Driver 8W/10W/12W/14W/16W/18W/20W/24W/25W Power Supply AC 220V for ceiling lamp|led scan|led lighting for stageled bulb with remote control - AliExpress
![MAX6948B High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports | Maxim Integrated MAX6948B High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports | Maxim Integrated](https://www.maximintegrated.com/images/qv/6288.gif)