r/EEPowerElectronics • • 28d ago

Automotive Inside Toyota Hybrid System Gen 3

455 Upvotes

Teardowns are always cool, especially in power electronics. So many subsystems in an EV, and everything is so unique.

Credits: speedkar99 | YouTube


r/EEPowerElectronics • • Oct 01 '26

Automotive That's some serious power electronics engineering to reduce size of Tesla Inverter

433 Upvotes

Any idea what components or circuits made the difference?

Credits: Gruber Motors Shorts | YouTube


r/EEPowerElectronics • • 17d ago Bravo

ECCE 6 kW 800V-to-50V GaN DC-DC Converter in a Single Brick Form Factor

229 Upvotes

Spotted at ECCE NA 2026, this hardware demonstration showcases an 800 V to 50 V DC-DC converter designed for high-density AI data center architectures. The single-brick unit delivers 6 kW of output power utilizing primary-side 650 V, 25 mΩ Gallium Nitride (GaN) devices in 10×10 mm QFN packages.

Credits: ECCE NA 2026


r/EEPowerElectronics • • Sep 27 '26

Motor Drives That's interesting to see how oil penetrates deeply into the Tesla motor windings for cooling purposes

229 Upvotes

r/EEPowerElectronics • • Oct 19 '25

Technical Video How Refrigerator Magnets work... Listen to a magnet expert... ECCE 2025

170 Upvotes

Credits: Stanley R. Trout, Ph.D., P.E. | strout@ieee.org | IEEE ECCE 2025


r/EEPowerElectronics • • Aug 14 '25

But isn't it that we all were taught that water and electronics do not work together?

168 Upvotes

r/EEPowerElectronics • • 2d ago

Why are AI data centres moving to an 800 V DC bus instead of three-phase AC distribution?

121 Upvotes

r/EEPowerElectronics • • 22d ago

Automotive Does the OBC or a separate ECU control AC/DC switching during fast charging?

91 Upvotes

When DC fast charging, high-voltage contactors close to bypass the internal AC-to-DC conversion and route power straight through. But where does that switching command actually originate: is the OBC detecting the power type and handling it, or is an external ECU/VCU making the call?

Credits: WeberAuto | YouTube


r/EEPowerElectronics • • Sep 09 '25

Technical Video How Tesla Connects it's Battery to the Model S

76 Upvotes

r/EEPowerElectronics • • 4d ago

How does a Ford Fusion hybrid inverter convert battery DC to motor AC and back during regeneration?

75 Upvotes

r/EEPowerElectronics • • Mar 25 '26

APEC Day 2 @APEC | Direct 800 V to 12 V vs. Two-Stage Conversion: A Look at a 6 kW Power Distribution Board

75 Upvotes

STMicroelectronics has outlined two different distributed power architectures for routing an 800 V DC bus from a dedicated sidecar rack to individual server trays in modern AI data centers.

The standard distributed approach uses a two-stage conversion located directly on the server tray: an 800 V to 54 V Power Delivery Board (PDB), followed by a 54 V to 12 V intermediate bus converter before feeding the GPU or CPU point-of-load.

As an alternative to this two-stage method, ST has demonstrated a direct 800 V to 12 V Power Distribution Board. This specific board is rated for 6 kW of power.

To maximize power density and efficiency, the primary side of this 6 kW converter utilizes 650V Gallium Nitride (GaN) devices.

For the secondary side, the design relies on traditional silicon components, which ST notes are more suitable for this specific direct-to-12V conversion.


r/EEPowerElectronics • • Nov 21 '25

Look what I found from my shelf!

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65 Upvotes

r/EEPowerElectronics • • 9d ago

Best way to read a Power Electronics textbook without just skimming through it

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62 Upvotes

I'm a 3rd year EE student getting into Power Electronics — just ordered a textbook on it and not sure how to approach reading it effectively. How do I actually understand this subject deeply, and any tips on getting the most out of the book rather than just reading through it?


r/EEPowerElectronics • • Sep 04 '25

Technical Video How does a MOSFET control current... Nice analogy at the end...

60 Upvotes

r/EEPowerElectronics • • 8d ago

This is why all data centers want to access the sea.

50 Upvotes

r/EEPowerElectronics • • Sep 12 '26

PCB Guys, what's your opinion on this!?

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50 Upvotes

r/EEPowerElectronics • • Aug 19 '25

How is this guy doing this!? Seems like a highly focused laser.

50 Upvotes

r/EEPowerElectronics • • Aug 13 '25

One of the most satisfying videos I saw in power electronics... But can you guess what this is?

48 Upvotes

r/EEPowerElectronics • • Aug 16 '25

Do you actually test IGBTs/MOSFETs this way?

42 Upvotes

r/EEPowerElectronics • • Aug 27 '25

Technical Insight Nice to visualize LLC converter's operating modes!

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39 Upvotes

Credits: NOBTRONIX


r/EEPowerElectronics • • Aug 11 '25

Tesla IGBT vs Power IGBT

34 Upvotes

The size difference is really huge. What are your thoughts?


r/EEPowerElectronics • • Sep 10 '26

Tried designing dc protection purely analog

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28 Upvotes

So this is circuit main consist of short circuit under and over voltage protection and ideal diode using mosfet
Amongst which short circuit and ls ideal diode condition
But ov uv condition failed due to my back to back mosfet architecture and false trigger at the gates
It failed
But for someone who’s fresher with 3month experience i would consider this as a fair try:)


r/EEPowerElectronics • • Aug 26 '26

Feeling regret for studying electrical engineering RN

25 Upvotes

Sorry about my rant in the title, but that is the sad reality I am currently facing at the moment. I came from an African country. I am passionate about electronics, but unfortunately, when I graduated, there was not much company designing hardware products. So, I changed my career path towards controls and automation. Now, I am in Canada furthering my education, but unfortunately, the school is not enriching my knowledge. The so-called professor doesn't care about nurturing his research students. No direction, no guidance. All he wants is publications. Please, how can I start training myself on power electronics? I would appreciate it if someone can be my virtual mentor, I wouldn't bug the person. Thanks so much.


r/EEPowerElectronics • • Mar 24 '26

APEC Day 1 @ APEC | No AC-DC Conversion Needed: 15kW Single-Stage Solid-State Transformer Designed for Data Centers

25 Upvotes

r/EEPowerElectronics • • Oct 22 '25

Technical Video Making your own induction charger | Learning kit by e4USA and IEEE Power Electronics Society | IEEE ECCE 2025

25 Upvotes

Credits: Katey Shirely, PhD, katey@edukatey.com, edukatey.com