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Electrical Engineering

Questions tagged [switching-losses]

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73 questions
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2 votes
2 answers
161 views

I am designing a buck converter for a lead acid battery with an output current of 135 A and voltage from 108 V to 142 V in different CC and CV stages. The input voltage is 165 V from a Vienna ...
miha medved's user avatar
  • 123
2 votes
1 answer
124 views

I calculate losses for IGBT = 16 W. Which thermal resistance should I multiply it by in order to know the temperature Tjc = 0.34 C/W Tja = 40 C/W Why this big difference? If I don't use a heat sink ...
Shahd Salem's user avatar
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4 votes
2 answers
492 views

Saturation: For anyone who doesn't know and is reading this in the future, transistors have an "active region" (its normal hFE rating) where it will ...
Mitch McMabers's user avatar
  • 553
1 vote
1 answer
99 views

I am doing rough power calculations for a 3-phase motor driver I am designing for a 10 kW motor. This is just a hobby project, so I realize that there are better solutions out there, but I want to ...
theph's user avatar
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0 votes
3 answers
234 views

I'm trying to figure out how to estimate the losses in a transistor and compare "Power Stage Designer Tool" with my calculations. For example, take a transistor NVBG020N090SC1 Frequency 25 ...
Владимир's user avatar
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0 votes
1 answer
287 views

I want to calculate the losses of a ferrite core. I don't want to rely on TDK limited charts and numbers. Here Magnetics INC has a calculation with constant numbers which is very useful I am looking ...
Mohamad Ghobadi madah's user avatar
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0 votes
1 answer
194 views

I aim to model the switching losses in a three-phase IGBT inverter controlled using Space Vector Modulation (SVM). I intend to use the approximated formula found in this paper, equal to: $$P_{sw}={1\...
Simone's user avatar
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1 vote
1 answer
152 views

I just saw an example of calculating the switching loss of a MOS transistor with an inductive load from this (page 20). Can anyone explain why they said this is ...
internet's user avatar
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0 votes
0 answers
63 views

From this document, it's straightforward to see why Cds is included there because it's in parallel with the high-side switch, and its energy will be dissipated via the Ron of the switch when it's ...
hana's user avatar
  • 270
4 votes
1 answer
424 views

I'm building 48v to 200v Push-Pull DC converter. And now I'm close to finishing the project, but when I checked the waveform on the transformer I discovered that it looks like this: (on this picture ...
darth taco tmp's user avatar
  • 43
0 votes
1 answer
447 views

For the first question I understand that operating in the ZCS region can result in shoot through but why does that happen? I understand that an LLC converter uses the leakage inductance of the ...
Sudhanva Gokhale's user avatar
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0 votes
1 answer
1k views

For designing a low side non-sync buck regulator I am looking for MOSFET(s) that can provide low overall power loss. Conditions would be 60V to 48V, 10A, 600 kHz (worst case), 1 Ohm source and 0.35 ...
EarthLord's user avatar
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0 votes
1 answer
150 views

I'm designing a 48V to 12V, 300W buck converter. I am considering using the LM5148 controller and NTMFSC004N08MC switches. I'm confused about how synchronous DC-DC controllers can list efficiency ...
w00t's user avatar
  • 298
0 votes
2 answers
321 views

How can I calculate the power loss of a dpak Mosfet after adding thermal vias around it? I added a 14x7 matrix of 0.5mm THT vias with in between distance of 1.3mm to relieve the thermal stress around ...
Bananabread's user avatar
  • 99
3 votes
2 answers
269 views

I am doing a measurement with this a 100 MHz high voltage differential probe with voltage derating. As per datasheet of TT-SI 9110 probe, the derating curve looks like below. What impact this voltage ...
Alison's user avatar
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