MCT8316Z: effect of Delay compensation and Slew rate on high Duty cycle values

liran vigdor

Part Number: MCT8316Z

Tool/software:

My drivers is configured to 35Khz, slew rate 200V/usec.

with PWM setting of 95% the output current is not reaching the Ilim value, and I see output of ~50% of the Ilim.

is it possible that the drivers Delay compensation prevent me to reaching High DC (Duty cycle).

i.e - if the driver is set to 35Khz, and delay compensation is 1.2usec--> it's about 10% of the 28uSec cycle time.

in previous setting of 0 delay compensation and 25V/usec - I didn't have such a problem.

0 Eric Chen over 1 year ago

Hi liran,

Please let me look into this and I'll get back to you in the next day.

Regards,
Eric C.

0 Venkatadri Shantaram84961 over 1 year ago in reply to Eric Chen

Hi Liran,

Eric is out of office, our team will respond to your question by end of this week.

We need to read this thread and understand the problem and status, kindly provide a daytime.

Thanks and Best Regards,

Venkatadri S

0 Venkatadri Shantaram84961 over 1 year ago in reply to Venkatadri Shantaram84961

Hi Liran,

Are you using the Hardware variant or SPI Variant? If SPI variant we have option to reduce the DLY_TARGET.

Even otherwise we have 1.4us window during turn OFF.

Did you check Pin level ILIM?

Thanks and Best Regards,

Venkatadri S

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