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Gate Driver ICs Forum Discussions

XIERGNIO
Level 1
25 sign-ins 10 sign-ins 5 replies posted
Level 1

Hello there
I am building a 24S BMS.
I need to drive 120 amp 100v mosfets in BMS.
Can you suggest a gate deriver used in BMS systems for this job?

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1 Solution
Meghana
Moderator
Moderator 50 solutions authored 5 likes given 100 replies posted
Moderator

Hello @XIERGNIO ,

Apologies for the delay.  Please find the link for the application for the BMS application page below. 

https://www.infineon.com/cms/en/applications/solutions/battery-management-system/

Through this link, you may navigate to the exact category of the BMS. You can find the product recommendations on the respective page. 

For example : BMS Light electric vehicles - https://www.infineon.com/cms/en/applications/solutions/battery-management-system/industrial-and-cons...

Meghana_0-1665580559830.png

Alternate way is to use the gate driver finder tool 

https://www.infineon.com/cms/en/design-support/finder-selection-tools/product-finder/gate-driver/?re...

Source & Sink current ratings is one of the important parameter in selection of gate driver. It can be calculated as below. 

Ig_source_max/ Ig_sink_max = Vcc-Vee/(Rg_int+Rg_ext) , assuming Rg_ext is same for both turn on path & turn off path. 

Vcc - Turn on gate drive voltage

Vee - Turn off gate drive voltage

Rg_ext calculation may undergo several iterations based on different application requirements like switching loss, EMI limitations etc., So a wise decision has to be made while selecting the gate driver. Considerably high current rated gate driver can be chosen and later Rg_ext can be tuned to optimise the system performance. 

If even after tuning system parameters, there is scope to reduce the Rg further, and if gate driver has the current limitations, then you may also use external booster circuits additional to the driver to fulfil the current requirement. 

Kindly check through both the options provided above. Please feel free to contact us if you need further support. 

 

Regards

Meghana

 

 

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4 Replies
Meghana
Moderator
Moderator 50 solutions authored 5 likes given 100 replies posted
Moderator

Hello @XIERGNIO , 

Can you please share some specific requirements that you are looking for.  For example:

1. Isolation requirements

2. Source and sink current capabilities

3. Protection features needed.

4. Drive voltage level preferred

 

Also please let me know if you require a multi mosfet driver ( ex: Half bridge/ Dual low side/Dual High side) or single switch driver.

Regards

Meghana

XIERGNIO
Level 1
25 sign-ins 10 sign-ins 5 replies posted
Level 1

No ısolation reg firstly

Sink current capability is until 120 A

Not nesserary protection

Drive voltage is 100 V MAX

Thank you for your answer

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XIERGNIO
Level 1
25 sign-ins 10 sign-ins 5 replies posted
Level 1

No ısolation reg firstly

Sink current capability is until 120 A

Not nesserary protection

Drive voltage is 100 V MAX

Thank you for your answer

0 Likes
Meghana
Moderator
Moderator 50 solutions authored 5 likes given 100 replies posted
Moderator

Hello @XIERGNIO ,

Apologies for the delay.  Please find the link for the application for the BMS application page below. 

https://www.infineon.com/cms/en/applications/solutions/battery-management-system/

Through this link, you may navigate to the exact category of the BMS. You can find the product recommendations on the respective page. 

For example : BMS Light electric vehicles - https://www.infineon.com/cms/en/applications/solutions/battery-management-system/industrial-and-cons...

Meghana_0-1665580559830.png

Alternate way is to use the gate driver finder tool 

https://www.infineon.com/cms/en/design-support/finder-selection-tools/product-finder/gate-driver/?re...

Source & Sink current ratings is one of the important parameter in selection of gate driver. It can be calculated as below. 

Ig_source_max/ Ig_sink_max = Vcc-Vee/(Rg_int+Rg_ext) , assuming Rg_ext is same for both turn on path & turn off path. 

Vcc - Turn on gate drive voltage

Vee - Turn off gate drive voltage

Rg_ext calculation may undergo several iterations based on different application requirements like switching loss, EMI limitations etc., So a wise decision has to be made while selecting the gate driver. Considerably high current rated gate driver can be chosen and later Rg_ext can be tuned to optimise the system performance. 

If even after tuning system parameters, there is scope to reduce the Rg further, and if gate driver has the current limitations, then you may also use external booster circuits additional to the driver to fulfil the current requirement. 

Kindly check through both the options provided above. Please feel free to contact us if you need further support. 

 

Regards

Meghana

 

 

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