Easy LED lighting design with thermal management is shown using National's LM3424 Constant Current N-Channel Controller featuring Thermal Foldback. Thermal foldback reduces regulated current through the LEDs as the temperature increases.
The presenter demonstrates National’s WEBENCH® LED Designer tool, where designers may select their desired LED temperature breakpoints and slope and visualize the systems’ behavior at different temperatures for easy and quick development.
Thermal design is important and can be a more significant determinant of total light output in high-brightness LED designs than the electrical design. LED lifetimes can decrease as temperatures rise, and at high enough temperatures, LED efficacy decreases.
LED driver, LED lighting, thermal foldback, LED thermal sensing, LED thermal management, LED temperature, LED temp sensing, LED temp sensor, LED temperature sensing, LED temperature sensor, LED bulb replacement, LED fixture, outdoor lighting, residential lighting, automotive, indoor lighting,
Digg
Del.icio.us
