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Smart Power Switches Forum Discussions

User21739
Level 1
First question asked
Level 1
Hi,
I want to create a DC "switch" for a upcoming RC car product. Can i use 2 BTS50010-1TAE in parallel to increase
the current?
Form my 1rst prototype consumes ~20A in normal operation and up to 35A for 1-3 sec.

Thanks in advance
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1 Solution
J-Ph_Audic
Employee
First solution authored
Employee
Hello,

PROFETs are more than a stand alone MOSFET: they come with an internal gate driver taking care of control, diagnosis and protection of the internal MOSFET.
Paralleling PROFETs may lead to reduced robustness against short-circuits.

Considering the use case: BTS50010-1TAE is able to drive 35A for 1-3 seconds, since the ambient temperature in a RC car is hardly aboe 40/50°C.
one single device should be sufficient. The component has to be soldered on a PCB with reasonable cooling capability (power planes to dissipate the power bigger than the footprint itself).

Best regards,

J-Ph Audic

View solution in original post

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2 Replies
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator

Hi,

PROFETs may be paralleled but in a very limited application conditions. The devices have integrated protection features. Hence while operating PROFET's in parallel, there can be a risk of asymmetric turn off  of the switches during short circuit or overtemperature faults  which can result in stress on only one device. Hence it is not a recommended configuration for all applications.

Additionally , you can refer the following links to know about other factors which affects the operation of MOSFET's when they are in parallel.

https://www.infineon.com/dgdl/Parallel_Operation_of_Power_MOSFET_.pdf?fileId=db3a30431ed1d7b2011eee7...


Regards,
Abhilash P

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J-Ph_Audic
Employee
First solution authored
Employee
Hello,

PROFETs are more than a stand alone MOSFET: they come with an internal gate driver taking care of control, diagnosis and protection of the internal MOSFET.
Paralleling PROFETs may lead to reduced robustness against short-circuits.

Considering the use case: BTS50010-1TAE is able to drive 35A for 1-3 seconds, since the ambient temperature in a RC car is hardly aboe 40/50°C.
one single device should be sufficient. The component has to be soldered on a PCB with reasonable cooling capability (power planes to dissipate the power bigger than the footprint itself).

Best regards,

J-Ph Audic
0 Likes