BiMOS output stage

Leolabs · 29th August 2006, 02:36 AM

Have anyone ever build this kind of output stage,ie a MOSFET driving a BJT,similiar to an IGBT???

djk · 29th August 2006, 08:43 AM

A while back, Accuphase made a very large and expensive amplifier with lateral MOSFETs for drivers and bipolars for outputs.

Workhorse · 29th August 2006, 05:26 PM

Some Models of Inter-M amplifiers M-500, M-1000 used Lateral Fets as drivers and BJTs at outputs...

ilimzn · 29th August 2006, 05:31 PM

Also the rare Kyocera integrateds used this approach., They used the small (500mA) laterals from hitachi to drive two pairs of toshiba BJTs.

darkfenriz · 10th September 2006, 10:01 PM

ilimzn
Which particular parts do they use and which ones would you suggest? I would be looking for something like 150V/2A.

best regards
Adam

ilimzn · 10th September 2006, 10:33 PM

2SK214, 2SJ77 were used to drive two pairs of 2SC3281, 2SA1302.

Certianly other combinations are possible. I used some myself in some experiments, they worked quite well. You may want to look at IRF710 and 9610...

bikehorn · 10th September 2006, 10:51 PM

how about this one?

http://ampslab.com/bi70mk2.htm

29th August 2006, 02:36 AM	#1
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	BiMOS output stage Have anyone ever build this kind of output stage,ie a MOSFET driving a BJT,similiar to an IGBT???

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29th August 2006, 08:43 AM	#2
djk diyAudio Member Join Date: Feb 2001 Location: USA	A while back, Accuphase made a very large and expensive amplifier with lateral MOSFETs for drivers and bipolars for outputs.

29th August 2006, 05:26 PM	#3
Workhorse diyAudio Member Join Date: Dec 2004	Some Models of Inter-M amplifiers M-500, M-1000 used Lateral Fets as drivers and BJTs at outputs...

29th August 2006, 05:31 PM	#4
ilimzn diyAudio Member Join Date: Feb 2005 Location: Zagreb	Also the rare Kyocera integrateds used this approach., They used the small (500mA) laterals from hitachi to drive two pairs of toshiba BJTs.

10th September 2006, 10:01 PM	#5
darkfenriz diyAudio Member Join Date: Jun 2004 Location: Warsaw	ilimzn Which particular parts do they use and which ones would you suggest? I would be looking for something like 150V/2A. best regards Adam

10th September 2006, 10:33 PM	#6
ilimzn diyAudio Member Join Date: Feb 2005 Location: Zagreb	2SK214, 2SJ77 were used to drive two pairs of 2SC3281, 2SA1302. Certianly other combinations are possible. I used some myself in some experiments, they worked quite well. You may want to look at IRF710 and 9610...

10th September 2006, 10:51 PM	#7
bikehorn diyAudio Member Join Date: Aug 2004 Location: toronto	how about this one? http://ampslab.com/bi70mk2.htm

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