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Anonymous Poster #1

IGBT Gate Drive Selection

01/19/2021 4:32 PM

Hello,

I'm designing a resistive load bank. Currently, I am designing the switch that will be controlled by a control signal via Arduino uno rev 3. The bidirectional switch is composed of two back-to-back igbts connected by their emitters with anti-parallel diodes. (Due to cost, there are two igbts instead of a single igbt module).

My question is:

How do I select the appropriate gate driver for a back-to-back igbt switch? As shown, The gates are connected together.

Based on my research, the following parameters are needed: gate charge, Iout, Iout pk., Vce, and number of channels? But to calculate Iout, we need switching frequency. This load bank does not requires PWM. Additonally, since the gate is shared between two IGBTs, will I have to account for current division?

Any help will be greatly appreciated!

IGBT datasheet: https://www.microsemi.com/document-portal/doc_download/6730-apt20gt60brdq1g-datasheet
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SolarEagle
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#1

Re: IGBT gate drive selection

01/19/2021 5:13 PM

https://www.ti.com/lit/ml/slua618a/slua618a.pdf?ts=1611071739256&ref_url=https%253A%252F%252Fwww.google.com%252F

https://toshiba.semicon-storage.com/us/semiconductor/knowledge/faq/liner_load-switch-ics/load-switch-ics12.html

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Brave Sir Robin
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#2
In reply to #1

Re: IGBT gate drive selection

01/19/2021 9:40 PM

Linear Tech has a lot of convenient products as well.

https://www.analog.com/en/products/monitor-control-protection/high-side-switches-mosfet-drivers.html
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Anonymous Poster #1
#3
In reply to #2

Re: IGBT gate drive selection

01/20/2021 10:58 AM

In the web site I saw "High-Side Gate Driver IC Non-Inverting 16-MSOP-EP".

what is Non-Inverting? Is it DC to DC and AC to AC output?

thank you,
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Anonymous Poster #1
#4
In reply to #3

Re: IGBT gate drive selection

01/20/2021 11:16 AM

here is a good information on this topic

https://forum.arduino.cc/index.php?topic=480306.0
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Brave Sir Robin
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#5
In reply to #3

Re: IGBT gate drive selection

01/20/2021 1:49 PM

Non-inverting refers to the gate logic.

For instance, applying a logic high signal to the input produces a high output (device turned on). That's non-inverting.

Inverting simply means that a logic low input signal produces a high output and vice versa.
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