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Level 1
Level 1

In the datasheet, the minum value of Dead time is 1.5uS. Is it enough to set 1.8uS with 20% margin or longer? Is there any formula to calculate the IGBT and diode loss with different dead-time setting? Thanks!

1 Solution

## Re: Deadtime setting for IKCM15L60GA

Moderator
Moderator

Hi Felix, there are two deadtimes in datasheet:

380ns DTIC is  provided by driver IC when deadtime between HIN and LIN is less than 380ns, meaning cross conduction is avoided even a short deadtime is set by users.

1.5ns is the recommended minimum deadtime between HIN and LIN.

1.5us /(1-20%)=1.875ns , I would suggest you can increase deadtime to 1.9ns if the margin is +/-20%. deadtime setting has nothing with power losses.

Regards,

YF

2 Replies

## Re: Deadtime setting for IKCM15L60GA

Level 1
Level 1
Distributor - Weikeng(GC)

The dead time should be longer than 1.5 us, which can be found in datesheet.  2us  should be the right choice. The deadtime will influence the bus voltage using rate.

## Re: Deadtime setting for IKCM15L60GA

Moderator
Moderator

Hi Felix, there are two deadtimes in datasheet:

380ns DTIC is  provided by driver IC when deadtime between HIN and LIN is less than 380ns, meaning cross conduction is avoided even a short deadtime is set by users.

1.5ns is the recommended minimum deadtime between HIN and LIN.

1.5us /(1-20%)=1.875ns , I would suggest you can increase deadtime to 1.9ns if the margin is +/-20%. deadtime setting has nothing with power losses.

Regards,

YF