Drive low power efficiency will improve the efficiency of built-in led drive power supply, the most common is to optimize the design of the electronic transformer parameters, reduce the eddy current loss on ringing. But apart from this there is no relevant skills? Now NiuBao power share LED drive power supply efficiency of eight skills wish I could help you.
1. The main current circuit PCB short as far as possible.
2. To optimize the design of the transformer parameters, reduce the eddy current loss on ringing. This is difficult, to grasp the basic knowledge of electromagnetic first, rational design of transformer, patience is the most important thing, even if it is thought that can improve the efficiency of 0.5%, also want to try.
3. Select appropriate switching devices. This is the balance of cost and performance, what kind of customer requirements, with what kind of device, but reasonable.
4. If the safety input EMI part optimization design.
5. Choose the high efficiency of the topology structure is the beginning of the scheme selection, when there is a request for the efficiency of customer premise, to assess what kind of topology.
6. Choose good electrolytic capacitor has a lot of people ignored the electrolysis is a big loss.
7. Start the part design under the premise of efficient power consumption, consider, at present a lot of chips have HV to start the feet, also more does more low startup current, it is to find out more about the new components, of course, there are plus start circuit condition, etc.
8. Chip auxiliary power supply optimization, 15 v is the best, but the LED and the output voltage for the wide, so the choice is one linear regulator, make the chip work in 15 v to reduce wear and tear.