TLE9853QX Brake Mode

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RLGeorge
Level 3
Level 3
10 likes given 10 questions asked 25 sign-ins
Can you share how to properly configurate and execute the brake mode? I do not understand either at this point. Our design is basically the same as the TLE9855 EVAL KIT board.
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1 Solution
Raj_C
Moderator
Moderator
Moderator
250 solutions authored 500 replies posted 50 likes received

Hi @RLGeorge,

Brake mode: 

In Brake Mode either both external high-side MOSFETs or both external low-side MOSFETs are statically switched on to short circuit the motor coil to brake the motor or keep it actively blocked during standstill. Since in brake mode no PWM capability is needed the charge pump is set into low-power mode to reduce the current consumption IVSD_BK from the VSD pin.

The following image gives simple representation of both LS side switches are ON. Similarly, it can be done for Both High-side switches.

Raj_C_0-1704868191669.png

 

The source of the gate driver control signals are configured by the register BDRV_CTRL1. As mentioned above for brake mode we need to control the switches statically. In static mode the gate drivers are controlled by the bits LSx_ON or HSx_ON. 

 

Please let us know if you have further questions.

 

Thank you

Best Regards

Raj Chaudhari

View solution in original post

2 Replies
Raj_C
Moderator
Moderator
Moderator
250 solutions authored 500 replies posted 50 likes received

Hi @RLGeorge,

Brake mode: 

In Brake Mode either both external high-side MOSFETs or both external low-side MOSFETs are statically switched on to short circuit the motor coil to brake the motor or keep it actively blocked during standstill. Since in brake mode no PWM capability is needed the charge pump is set into low-power mode to reduce the current consumption IVSD_BK from the VSD pin.

The following image gives simple representation of both LS side switches are ON. Similarly, it can be done for Both High-side switches.

Raj_C_0-1704868191669.png

 

The source of the gate driver control signals are configured by the register BDRV_CTRL1. As mentioned above for brake mode we need to control the switches statically. In static mode the gate drivers are controlled by the bits LSx_ON or HSx_ON. 

 

Please let us know if you have further questions.

 

Thank you

Best Regards

Raj Chaudhari

RLGeorge
Level 3
Level 3
10 likes given 10 questions asked 25 sign-ins

Thank you!

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