Interesting IGBT for class d...

fredos · 29th December 2007, 03:07 AM

http://ixdev.ixys.com/DataSheet/99169.pdf

Seem promissing...

Look how fast is it for an IGBT...

Eva · 29th December 2007, 10:52 AM

There is a trade between Vce-sat and fall time in IGBT. Check HGTG30N60A4D for example, it has 25% lower Vce-sat at 30A at the expense of 25% higher Eoff (ignore switching times, they have little meaning).

Workhorse · 29th December 2007, 12:59 PM

Looks Tempting, should be tried definately........
http://ixdev.ixys.com/DataSheet/99044.pdf

celsosc · 12th August 2010, 09:13 PM

Hello, I already posted in the Solid State section, but I think it's more appropriate to post in the Class D section.

Lets look again over the IGBT discussion, now with new Hi-Speed IGBT´s on the market, I was wondering if someone is using IGBT's in a H-Bridge configuration for high Power Sub-woofer amplification or even has use successful for Full-range amplification.

I'm thinking IGBT's specific in Class D operation. The new IRGP20B60PD or IRGP35B60PD WARP2 devices from IR can handle switching up to 150khz. Having this devices in a full bridge operation would give massive output power.

Pafi · 12th August 2010, 11:20 PM

It's simple, but quality is limited. I used IRGP50B60PD1 in full bridge (fsw=100 kHz, not for audio) some years ago, and I found its diode is not as fast as I needed.

But full bridge with more than 250 V power supply for audio? Why would you do it? That's more than 2500 W on 8 ohms! What would you use it for?

Workhorse · 13th August 2010, 06:21 AM

IXGX60N60C2D1 are best in class for 100khz hard switching

celsosc · 13th August 2010, 09:19 AM

Quote:

Originally Posted by Pafi

But full bridge with more than 250 V power supply for audio? Why would you do it? That's more than 2500 W on 8 ohms! What would you use it for?

Hello Pafi,
Pick up any modern PA Low-Driver and you see that they are power hungry.
And as the most expensive part of any PA-Amplifications is providing Power for the low end, I think it would be interesting to develop a cheap dedicated high Power Amp.

DjLeco · 13th August 2010, 11:02 AM

Quote:

Originally Posted by Workhorse

IXGX60N60C2D1 are best in class for 100khz hard switching

And HGTG30N60A4D, too!

Pafi · 13th August 2010, 01:10 PM

Celsosc!

Quote:

Pick up any modern PA Low-Driver and you see that they are power hungry.

Is Eminence or JBL out of date? Please name one product you think about! Wherever I search I don't find a resonable speaker which needs this high voltage.

Workhorse · 13th August 2010, 01:32 PM

2500W at 8 ohms is surely not needed for any single LF driver, max power handled by known PA LF transducer is 1000-1200W range and 1500W is max permissible for short brusts.

whereas 5000W @ 2ohms is very desirable from an amplifier and that needs rails less than 200V indeed.

Precision Devices International Limited

29th December 2007, 03:07 AM	#1
fredos diyAudio Member Join Date: Mar 2005 Location: Quebec	Interesting IGBT for class d... http://ixdev.ixys.com/DataSheet/99169.pdf Seem promissing... Look how fast is it for an IGBT...

29th December 2007, 10:52 AM	#2
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	There is a trade between Vce-sat and fall time in IGBT. Check HGTG30N60A4D for example, it has 25% lower Vce-sat at 30A at the expense of 25% higher Eoff (ignore switching times, they have little meaning). __________________ I use to feel like the small child in The Emperor's New Clothes tale

29th December 2007, 12:59 PM	#3
Workhorse diyAudio Member Join Date: Dec 2004	Looks Tempting, should be tried definately........ http://ixdev.ixys.com/DataSheet/99044.pdf __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

13th August 2010, 06:21 AM	#6
Workhorse diyAudio Member Join Date: Dec 2004	IXGX60N60C2D1 are best in class for 100khz hard switching __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

13th August 2010, 01:32 PM	#10
Workhorse diyAudio Member Join Date: Dec 2004	2500W at 8 ohms is surely not needed for any single LF driver, max power handled by known PA LF transducer is 1000-1200W range and 1500W is max permissible for short brusts. whereas 5000W @ 2ohms is very desirable from an amplifier and that needs rails less than 200V indeed. Precision Devices International Limited __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance


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12th August 2010, 09:13 PM	#4
celsosc diyAudio Member Join Date: May 2006 Location: Viana do Castelo	Hello, I already posted in the Solid State section, but I think it's more appropriate to post in the Class D section. Lets look again over the IGBT discussion, now with new Hi-Speed IGBT´s on the market, I was wondering if someone is using IGBT's in a H-Bridge configuration for high Power Sub-woofer amplification or even has use successful for Full-range amplification. I'm thinking IGBT's specific in Class D operation. The new IRGP20B60PD or IRGP35B60PD WARP2 devices from IR can handle switching up to 150khz. Having this devices in a full bridge operation would give massive output power.

12th August 2010, 11:20 PM	#5
Pafi diyAudio Member Join Date: May 2004 Location: Budapest	It's simple, but quality is limited. I used IRGP50B60PD1 in full bridge (fsw=100 kHz, not for audio) some years ago, and I found its diode is not as fast as I needed. But full bridge with more than 250 V power supply for audio? Why would you do it? That's more than 2500 W on 8 ohms! What would you use it for?

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