Sep 26, 2020
11:51 AM
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Sep 26, 2020
11:51 AM
about the IR2153D.
On the datasheet there's a chart called "IR2153 RT vs Frequency". It shows frequency as high as 1 MHz.
But the table called "Electrical Characteristics" says "Oscillator frequency: Max: 106 kHz".
So what's the max frequency?
Thanks
On the datasheet there's a chart called "IR2153 RT vs Frequency". It shows frequency as high as 1 MHz.
But the table called "Electrical Characteristics" says "Oscillator frequency: Max: 106 kHz".
So what's the max frequency?
Thanks
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1 Solution
Sep 29, 2020
05:22 AM
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Sep 29, 2020
05:22 AM
They are arbitrary examples used to test at close to 100 kHz switching frequency.
Isolated gate drivers can go to 1 MHz, level-shift gate drivers are limited to around 300 kHz to 500 kHz as level shift losses dominate at higher frequencies leading to higher thermal / power dissipation.
See the below application note which describes the different loss mechanisms inside a gate driver:
http://www.infineon.com/dgdl/Infineon-Advantages_of_high-voltage_GD_ICs-ApplicationNotes-v02_00-EN.p...
Isolated gate drivers can go to 1 MHz, level-shift gate drivers are limited to around 300 kHz to 500 kHz as level shift losses dominate at higher frequencies leading to higher thermal / power dissipation.
See the below application note which describes the different loss mechanisms inside a gate driver:
http://www.infineon.com/dgdl/Infineon-Advantages_of_high-voltage_GD_ICs-ApplicationNotes-v02_00-EN.p...
4 Replies
Sep 28, 2020
01:02 AM
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Sep 28, 2020
01:02 AM
The Electrical Characteristics table provides the test condition for the Max. Oscillator Frequency as Ct = 1 nF and Rt = 7.43 kΩ giving 106 kHz. For the minimum recommended values of Ct = 330 pF and Rt = 10 kΩ , the maximum oscillator frequency can be 1 MHz.
You can look at the below application notes on the working of IR2153D.
1. http://www.infineon.com/dgdl/dt98-4.pdf?fileId=5546d46254e133b401554de8f0885e14
2.http://www.infineon.com/dgdl/dt98-1.pdf?fileId=5546d46254e133b401554de8ed5d5e0f
You can look at the below application notes on the working of IR2153D.
1. http://www.infineon.com/dgdl/dt98-4.pdf?fileId=5546d46254e133b401554de8f0885e14
2.http://www.infineon.com/dgdl/dt98-1.pdf?fileId=5546d46254e133b401554de8ed5d5e0f
Sep 28, 2020
09:16 AM
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Sep 28, 2020
09:16 AM
Sep 28, 2020
07:20 PM
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Sep 28, 2020
07:20 PM
is there a special importance for Ct = 1 nF and Rt = 7.43 kΩ ? Is this a recommended values? Or just arbitrary example?
i don't see Max Frequency in Infineon Gate Drivers parametric search. Does that mean all devices have same Max Frequency of 1 MHz?
thx
i don't see Max Frequency in Infineon Gate Drivers parametric search. Does that mean all devices have same Max Frequency of 1 MHz?
thx
Sep 29, 2020
05:22 AM
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Sep 29, 2020
05:22 AM
They are arbitrary examples used to test at close to 100 kHz switching frequency.
Isolated gate drivers can go to 1 MHz, level-shift gate drivers are limited to around 300 kHz to 500 kHz as level shift losses dominate at higher frequencies leading to higher thermal / power dissipation.
See the below application note which describes the different loss mechanisms inside a gate driver:
http://www.infineon.com/dgdl/Infineon-Advantages_of_high-voltage_GD_ICs-ApplicationNotes-v02_00-EN.p...
Isolated gate drivers can go to 1 MHz, level-shift gate drivers are limited to around 300 kHz to 500 kHz as level shift losses dominate at higher frequencies leading to higher thermal / power dissipation.
See the below application note which describes the different loss mechanisms inside a gate driver:
http://www.infineon.com/dgdl/Infineon-Advantages_of_high-voltage_GD_ICs-ApplicationNotes-v02_00-EN.p...