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cross mob
Yong
Level 2
Level 2
First like received 5 replies posted 10 sign-ins

Hi Expert,

I have a question about TLE92108. As we know, 92108 can set dead time between HS and LS on the same leg. For example, PWM is mapped to drive LS and HS is set as active freewheeling. On the  PWM rising edge, LS turn on after dead time expires. On the PWM falling edge, the LS turns off immediately. So LS will have less ON time comparing to PWM ON time. Is there any way to compensate this time loss? Thanks.

BR,

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1 Solution
Vinay
Moderator
Moderator
Moderator
50 solutions authored 100 replies posted 250 sign-ins

Hello @Yong,

Good Day!

Thanks for posting your question in Infineon community.

 

In TLE9210x devices, dead time between HS and LS is set using the parameter Cross current protection time.

 

When turn-on the PWM MOSFET, the MOSFET has a delay of (cross current protection time FW) tCCP_FW, but when turn off the MOSFET, the tCCP_FW is again applied to compensate the delay at turn-on.

PWM turn On time and LS turn ON time shall be same. There is a delay of tCCP_FW during turn ON, and the same delay time is applied during turn OFF to compensate the delay at turn-on as shown below.

Vinay_1-1687251786787.png

 

Thank you!

 

 

Best Regards,
Vinay

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1 Reply
Vinay
Moderator
Moderator
Moderator
50 solutions authored 100 replies posted 250 sign-ins

Hello @Yong,

Good Day!

Thanks for posting your question in Infineon community.

 

In TLE9210x devices, dead time between HS and LS is set using the parameter Cross current protection time.

 

When turn-on the PWM MOSFET, the MOSFET has a delay of (cross current protection time FW) tCCP_FW, but when turn off the MOSFET, the tCCP_FW is again applied to compensate the delay at turn-on.

PWM turn On time and LS turn ON time shall be same. There is a delay of tCCP_FW during turn ON, and the same delay time is applied during turn OFF to compensate the delay at turn-on as shown below.

Vinay_1-1687251786787.png

 

Thank you!

 

 

Best Regards,
Vinay
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