The MR16 LED Lighting Module Reference Solution
Introduzione alla soluzione
The MR16 LED Lighting Module Reference Solution is a low-cost, microcontroller-based buck topology that drives a 3W high power LED as an easy replacement for standard MR16 halogen bulbs.
This solution enables dimming presets for specified light outputs with memory and overcurrent protection.
Freescale's low-cost MC68HC908QT2 8-bit MCU acts as an intelligent high-power LED driver with soft-start and overcurrent protection using a single 8-bit A/D converter.
The LED lighting module solution uses the Freescale MC68HC908QT2 as the MCU of the solution core.
It can be used as an intelligent high-power LED driver with a single-channel 8-bit analog-to-digital converter to provide soft-start and over-current protection.The core advantages
A low-cost alternative to the standard MR16 halogen bulb
Dimming preset for specified light output with memory and overcurrent protection
MR16 LED lighting module solution design block diagram
The overview of MC68HC908QT2
Freescale Semiconductor’s MC68HC908QT2 microcontroller (MCU) helps reduce system cost by eliminating the need for external low-voltage inhibit (LVI), external drivers with high-current input/output (I/O) and external data EEPROM and helps reduce programming cost with fast Flash programming. Other valuable features include an internal clock oscillator.
It helps maximize efficiency and speed time to market with the ability to change code in-application with Flash and free, professional-quality development tools including a C compiler,simulator, assembler, linker, Flash programmer and auto-code generator, all specifically geared to function with Freescale’s QT/QY line of MCUs.
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