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teamtekin · 08:21 PM

That would make it huge and inefficient. The pcb has more resistance than the fets. We have truly reached the point of diminishing returns of fet Rds on. Part of the of the magic is that we use 2 boards, half the current in each one. Shhhh Super heavy copper, multi layer, designed to reduce all trace lengths.

R1 has 24 fets, R1 rpo has 48 fets. We thought the Mt would need even more, but these fets are proving to be pretty amazing. It also helps to have the high voltages. Voltage is our friend and current is a beotch. Power =VI and more V reduces the I for a given power level.

Also our solder post make really good heatsinks because they are soldered to the power planes. It is basically a copper block and we can pull the heat from anywhere. We will likely flip it over and heatsink it on top just to make sure we have lots of head room. It really is a big block of copper and we can pull heat from the entire mass.

If we could keep the fets at the 25C ,where the spec numbers are rated at, it would push a real car. Spec sheets can be very deceiving unless you read between the lines and account for actual conditions. Truth is the fets are over 300F when the units are close to thermal and perform no where near their ratings.

If we impress Mike we are certainly hoping he will carry our products. We like to earn it.

Tekin Prez

	(#29)
teamtekin RC-Monster Stock Offline Posts: 49 Join Date: Apr 2007	04.10.2007, 01:12 PM That would make it huge and inefficient. The pcb has more resistance than the fets. We have truly reached the point of diminishing returns of fet Rds on. Part of the of the magic is that we use 2 boards, half the current in each one. Shhhh Super heavy copper, multi layer, designed to reduce all trace lengths. R1 has 24 fets, R1 rpo has 48 fets. We thought the Mt would need even more, but these fets are proving to be pretty amazing. It also helps to have the high voltages. Voltage is our friend and current is a beotch. Power =VI and more V reduces the I for a given power level. Also our solder post make really good heatsinks because they are soldered to the power planes. It is basically a copper block and we can pull the heat from anywhere. We will likely flip it over and heatsink it on top just to make sure we have lots of head room. It really is a big block of copper and we can pull heat from the entire mass. If we could keep the fets at the 25C ,where the spec numbers are rated at, it would push a real car. Spec sheets can be very deceiving unless you read between the lines and account for actual conditions. Truth is the fets are over 300F when the units are close to thermal and perform no where near their ratings. If we impress Mike we are certainly hoping he will carry our products. We like to earn it. Tekin Prez Last edited by teamtekin; 04.10.2007 at 08:21 PM.