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Class D Switching Power Amplifiers and Power D/A conversion

Class D with GaN FETs & IC  PE29102  (GaN FET) driver
Class D with GaN FETs & IC  PE29102  (GaN FET) driver
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Old Today, 12:56 PM   #11
MorbidFractal is offline MorbidFractal
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Join Date: Nov 2017
Quote:
I never have test it, but I think its time to try.

Good idea. Looking forward to your result. Please supply Gerber File and Circuit. My inductor is ATX. How to design 1mH?
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Old Today, 02:45 PM   #12
Mark Tillotson is offline Mark Tillotson
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Join Date: May 2018
Quote:
Originally Posted by atmasphere View Post
The trick with GaNs is that they are a lot harder to place on a circuit board. You can put together surface mount stuff pretty easily with a normal soldering station but all the GaN transistors I've seen require that you flow the solder to make connections to them.

They are about the hardest devices to surface mount, perhaps worse than BGAs.


I bought a couple of EPC2903 modules for this reason as they have done the hard work and mounted a half-bridge and driver onto a 12mm x 12mm module for you (its still SMT though, just much easier to handle).


Here's my attempt to mount onto a test board: Click the image to open in full size.
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Old Today, 03:21 PM   #13
NMOS is online now NMOS  Germany
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Join Date: Dec 2010
Location: Frankfurt
Quote:
Originally Posted by Mark Tillotson View Post
They are about the hardest devices to surface mount, perhaps worse than BGAs.


I bought a couple of EPC2903 modules for this reason as they have done the hard work and mounted a half-bridge and driver onto a 12mm x 12mm module for you (its still SMT though, just much easier to handle).


Here's my attempt to mount onto a test board: Click the image to open in full size.

EPC2903_GaNFET is toys, No ! better relax and use TPA3255 for Class D !



We talk about big power Class D, you get 99 % efficiency and 5 ns deadtime

TO-247 TP65H035WSQA 650V GanFET

Key Specifications
VDS (V) min 650
V(TR)DSS (V) max 800
RDS(on) (mΩ) max* 41
QRR (nC) typ 178
QG (nC) typ 24


I think we can upgrade existing big power DIY Class D circuits with GanFET

Fullbridge / Halfbridge, ....improve performance and decrease heat - 30 %


"ucd 25 watts to 1200 watts using 2 mosfets - diyAudio"
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