I basically copied their schematic but added a differential input. I decided to do four pairs for possible sub amp use but would start with one pair and add them if power requirements warrant.
Alothough I have the IR FET's there I am considering the Toshiba's mentioned in the 4702 app note.
One thought I had was to drop back to two FET pairs and parallel two boards for the sub. I would just swap the differential pair of one to basically do a bridged design. That's what the BPA-300 design essectially does with seemingly excellent results.
Any suggestions for improvement?
Alothough I have the IR FET's there I am considering the Toshiba's mentioned in the 4702 app note.
One thought I had was to drop back to two FET pairs and parallel two boards for the sub. I would just swap the differential pair of one to basically do a bridged design. That's what the BPA-300 design essectially does with seemingly excellent results.
Any suggestions for improvement?
Attachments
Some of the final values will depend on the PCB layout. The compensation capacitor and gate resistors, for example. Be prepared to adjust them for full stability. The bias may also need to adjust depending on where you want to bias your design. Be sure the drain supply bypassing is close to the FET as possible.
-SL
-SL
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Solid State
- My differential input 49830