Jan 23, 2020
02:54 AM
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Jan 23, 2020
02:54 AM
1 Solution
Feb 11, 2022
03:42 AM
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Feb 11, 2022
03:42 AM
Hello @User17675
Thanks for writing to Infineon community.
The Bootstrap capacitor is used to provide the isolation supply for the high switch.
The bootstrap capacitor can size based on the Switch gate capacitance and switching frequency. The relation between the bootstrap capacitor ,switch gate charge and frequency amylases in this link.
Thanks
Vaddemani
2 Replies
Feb 04, 2020
09:23 AM
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Feb 04, 2020
09:23 AM
Wen wrote:
What is purpose of bootstrap capacitor and how do I size it?
The bootstrap capacitor is required to supply voltage to the highside gate driver within the module. The internal bootstrap circuitry eliminates the need for any external high voltage diodes and resistors. To size the bootstrap capacitor, please check out the IPM's application note which is available on the IPM webpage
Feb 11, 2022
03:42 AM
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Feb 11, 2022
03:42 AM
Hello @User17675
Thanks for writing to Infineon community.
The Bootstrap capacitor is used to provide the isolation supply for the high switch.
The bootstrap capacitor can size based on the Switch gate capacitance and switching frequency. The relation between the bootstrap capacitor ,switch gate charge and frequency amylases in this link.
Thanks
Vaddemani