led driver design - griffith university · led driver design refer to an874 from microchip buck...

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LED Driver DesignRefer to AN874 from Microchip

Buck Configuration High-Power LED Driver

To suit 1W and 3W LED

MOSFETCurrent rating

On resistance

Total gate charge

Cost

DiodeSpeed

Dissipation

Cost

Inductor for 1W

Inductor for 3W

Current sense

Time delay

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