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Adding Intelligence to Lighting Applications
Driving LEDs with a Smart Buck Regulator
A simple Buck topology switching power supply can be implemented using the on-chip comparator peripheral within the PIC12HV615 microcontroller.
The switching power supply design ensures efficient power transfer between the system battery and the output LED. Using the attached Flash microcontroller as a control for the driver circuit expands the capability of the circuit to include intensity control, automated intensity compensation for low battery conditions, and the ability to playback preprogrammed Flash sequences. The combination of the switching power supply design and the microcontroller results in an efficient circuit with advanced automated features while keeping the circuit simple and inexpensive.
Mixed Signal Controllers in 8/14/16-pin package
Smart Buck LED Driver Using a Microcontroller with Integrated Comparator
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