The_bad_Frag
Enlightened
Hi there! :wave:
My shiningbeam 2.8A driver gets hot. REALLY fricking hot!
I soldered a setup for testing together with a cree XM-L on a cpu cooler, a shiningbeam 2.8A driver hanging in the air connected to 8xAA Ni-MH(4x2). The current from the batteries is exactly 2.80A and the voltage at the driver-in is 3.78V under 2.8A load.
The datasheet of the XM-L says 3.3V at 2.8A. This would mean 0.48V need to be droped at the driver which makes 1.34 watts of heat.
After 1 minute runtime I can easily burn my finger on it. I mean its a linear driver but is this normal? :duh2: Or do I make anything wrong? I never had any driver getting that hot.
My shiningbeam 2.8A driver gets hot. REALLY fricking hot!
I soldered a setup for testing together with a cree XM-L on a cpu cooler, a shiningbeam 2.8A driver hanging in the air connected to 8xAA Ni-MH(4x2). The current from the batteries is exactly 2.80A and the voltage at the driver-in is 3.78V under 2.8A load.
The datasheet of the XM-L says 3.3V at 2.8A. This would mean 0.48V need to be droped at the driver which makes 1.34 watts of heat.
After 1 minute runtime I can easily burn my finger on it. I mean its a linear driver but is this normal? :duh2: Or do I make anything wrong? I never had any driver getting that hot.