FDP61N20 mosfet amp idea

highpow3rpc · 15th December 2009, 10:12 AM

what amplifier schematic would i be able to substitute this mosfet into to make a high power low component count amp

Circlomanen · 15th December 2009, 10:57 AM

The FDP61N20 is a TO220 device???
Its very hard to cool these small devices in a high power amp. You will have parallell a lot of them to get say 200 watts into 8 ohms reliable.

highpow3rpc · 15th December 2009, 11:45 AM

Quote:

Originally Posted by Circlomanen

The FDP61N20 is a TO220 device???
Its very hard to cool these small devices in a high power amp. You will have parallell a lot of them to get say 200 watts into 8 ohms reliable.

hey circlomanen to combat this i am going to set up a active cpu heatsink which will be much better than a passive heatsink any other input is much appreciated thank you for the reply

sakis · 15th December 2009, 12:55 PM

passive heatsink ( ????? ) that was a nice one !!!!

nigelwright7557 · 15th December 2009, 11:25 PM

A good quasi complimentary design would suit this MOSFET.

I was gobsmacked at its power 417W !!!! and in a TO220 package.
It would need a good heatsink with possibly a fan too.

highpow3rpc · 15th December 2009, 11:29 PM

yeah the active heatsink (heatsink with fan) will be set up on these devices if used but i have been looking at the driver ic's some of the class d drivers are perfect one in particular the 16-dip IRS2092PBF is perfect for diy if i set it up with that mosfet it would create some decent power (by the way i cant find any quasi schematics its all just threads with no schematics)

nigelwright7557 · 15th December 2009, 11:33 PM

Quote:

Originally Posted by highpow3rpc

yeah the active heatsink (heatsink with fan) will be set up on these devices if used but i have been looking at the driver ic's some of the class d drivers are perfect one in particular the 16-dip IRS2092PBF is perfect for diy if i set it up with that mosfet it would create some decent power (by the way i cant find any quasi schematics its all just threads with no schematics)

You will need to do an internet search for a quasi amp.
There are a few out there both biploar and MOSFET.

highpow3rpc · 15th December 2009, 11:34 PM

Thank you nigel i was thinking of making this project a bit simpler and using a gate driver with integrated pwm generator

15th December 2009, 10:12 AM	#1
highpow3rpc diyAudio Member Join Date: Dec 2009	FDP61N20 mosfet amp idea what amplifier schematic would i be able to substitute this mosfet into to make a high power low component count amp

15th December 2009, 10:57 AM	#2
Circlomanen diyAudio Member Join Date: Sep 2004 Location: Göteborg	The FDP61N20 is a TO220 device??? Its very hard to cool these small devices in a high power amp. You will have parallell a lot of them to get say 200 watts into 8 ohms reliable. __________________ We live in a horizontal world, why use vertical topologies???

15th December 2009, 12:55 PM	#4
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	passive heatsink ( ????? ) that was a nice one !!!! __________________ SERVICE ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

15th December 2009, 11:25 PM	#5
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	A good quasi complimentary design would suit this MOSFET. I was gobsmacked at its power 417W !!!! and in a TO220 package. It would need a good heatsink with possibly a fan too. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

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15th December 2009, 11:29 PM	#6
highpow3rpc diyAudio Member Join Date: Dec 2009	yeah the active heatsink (heatsink with fan) will be set up on these devices if used but i have been looking at the driver ic's some of the class d drivers are perfect one in particular the 16-dip IRS2092PBF is perfect for diy if i set it up with that mosfet it would create some decent power (by the way i cant find any quasi schematics its all just threads with no schematics)

15th December 2009, 11:34 PM	#8
highpow3rpc diyAudio Member Join Date: Dec 2009	Thank you nigel i was thinking of making this project a bit simpler and using a gate driver with integrated pwm generator

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