rbz_shell

Student Project of a #Microelectronic and #Powerelectronic System at #rbzentrum @HS_Reutlingen. Objective: Stereo Amplifier using #GaN Transistors. #Master #MSc

[rbz_shell @rbz_shell]

Today we participated in #CadenceLIVE conference and presented our work on a #GaN-FET Class-D audio amplifier to an #academic and #industrial audience.
Rewatch our contribution on YouTube:
https://t.co/mTEpHaGAAe

#powerelectronics #microelectronics @HS_Reutlingen

[rbz_shell @rbz_shell]

See the components working in our amplifier: power inductors by @Coilcraft_Inc, gate-driver Si8275 by @siliconlabs and GaN-FET halfbridge transistors EPC2103 by @EPC_Corp. They're really working well together!
The modulator is integrated in an #ASIC designed by us.
@HS_Reutlingen

[rbz_shell @rbz_shell]

It works 🎉🎉🎉

Our self-developed #GaN-FET class-D stereo #amplifier with own designed #ASIC works. After development of one year, we finally can listen to our favorite songs.

@ProfSoenmez @ProfHennig @HS_Reutlingen @EPC_Corp @siliconlabs @Coilcraft_Inc

[rbz_shell @rbz_shell]

It's going to be serious.
#fingerscrossed 🤞

[rbz_shell @rbz_shell]

Very good news before the weekend: our amplifier behaves like in the simulations.
The additional fan is not really needed. It is just for safety reasons.
#soundcheck is going to be done soon.

It is even more a pure sine compared to @ProfHennig tweet 😜

[rbz_shell @rbz_shell]

First validation of our #amplifier #PCB design. The on-board voltage regulators are operating as expected and no short-circuits are forcing the power supply into current limitation.
Just the #ASIC is missing. It is still going to be bonded...

#microelectronics #powerelectronics

[rbz_shell @rbz_shell]

@ProfSoenmez Still have to find some topics for the thesis 😄

[rbz_shell @rbz_shell]

First #PCB is in the (reflow-)oven.

Now all that's missing is the chip.

If successful, first results will follow next week :)

#rbzentrum #finalsteps

[rbz_shell @rbz_shell]

post-exam-soldering:
After our "design of #integrated #circuits" exam today, we have some time to work on our project.
#SMD placement and #filter soldering in progres.
#microelectronics #powerelectronics #rbcenter

[rbz_shell @rbz_shell]

Close to the final #exams #weekend is a meaningless word.

@HS_Reutlingen

[rbz_shell @rbz_shell]

#OrdnungistdashalbeLeben
Preparatory work for our final PCB is in progress. Now only the PCBs are missing :D

#rbzentrum #cleanup

[rbz_shell @rbz_shell]

Here are some #sneekpeaks of our self-designed #ASIC laying on a #wafer-prober.
It was delivered last week. So that we can assemble the chip to the class D amplifier PCB, it has to be bonded and packaged.

Crazy to see work results of half a year on 3mm x 3mm size.

[rbz_shell @rbz_shell]

@haiikun @HS_Reutlingen Cool, danke! Immer wieder gut zu erfahren, was wir alles an den Fakultäten zur Verfügung haben!

[rbz_shell @rbz_shell]

Giving the power-supply-unit an unique "SHELL touch".

#powerelectronics #micoelectronis #rbzentrum #laser @HS_Reutlingen

[rbz_shell @rbz_shell]

@haiikun @HS_Reutlingen Nein, haben das in einem befreundeten Unternehmen gemacht.

[rbz_shell @rbz_shell]

Close to the final exams we finalized the class D amplifier PCB today. The #ASIC, located in the center left part, was delivered last week and is now on its way to be bonded and packaged.

#microelectronics #powerelectronics #rbcenter @HS_Reutlingen

[rbz_shell @rbz_shell]

While we wait for our #ASIC we carry out some #validation’s and #verification’s of our pre-designed #PCB’s.
Quite a lot of components from @digikey 😎.

#rbzentrum #powerelectronics #microelectronics @HS_Reutlingen

[rbz_shell @rbz_shell]

Many thanks also to @siliconlabs for the free samples of the gate drivers #SI8284 and #SI8285. We can now easily analyze the switching behavior in combination with our #eGaN #transistors.
Also it’s important for us to see the impact of the IC’s packaging on #parasitics.

[rbz_shell @rbz_shell]

Big thanks to @Coilcraft_Inc for providing us free samples. This gives us the opportunity to find exactly the right chokes for our filter configuration. In the next step the coils are tested for their frequency behavior.

#rbzentrum #powermagnetics #classd #audio

[rbz_shell @rbz_shell]

Today #soldering course with fellow students. Subject: How to handle #assembly process of the #GaN half-bridge module #EPC2103 from ⁦@EPC_Corp⁩.
GaN Transistors are going to be used in many projects of ⁦@HS_Reutlingen⁩.

#powerelectronics #microelectronics #rbzentrum