LED brightness adjustment: high-frequency PWM dimming – Power House – Blogs – TI E2E Community

In one of my previous blog posts, I introduced different dimming methods for light-emitting diode (LED) drivers: analog and pulse-width modulation (PWM) dimming. In this post, I will elaborate more on PWM dimming and how to get its frequency fast enough in order to reduce its effect on humans or other living creatures. Let’s review why PWM dimming is preferable to analog dimming in some applications, such as rear lamp. The brightness and color of an LED depends on the current flowing through. Once the curr

Source: LED brightness adjustment: high-frequency PWM dimming – Power House – Blogs – TI E2E Community