LMZ10504: Compensation Network changes in data sheet revisions

Eric Mac

Intellectual 415 points

Part Number: LMZ10504

The more recent datasheet (2017) have the following values:

The data sheet from 2013 - SNVS610L –DECEMBER 2009–REVISED APRIL 2013 has the following compensation values:

For the 5th and 7th lines there are changes in the Rcomp and Ccomp values.

Were there stability issues with the old values? Can you provide some history with stability and the effects?

over 5 years ago

0 Jimmy Hua over 5 years ago

TI__Guru 50120 points

Hi Eric,

Let me take a look at this for you and get back to you after getting more information from the systems and apps engineer previously supporting this device.

Regards,

Jimmy

0 Eric Mac over 5 years ago in reply to Jimmy Hua

Intellectual 415 points

Jim,

That would be helpful - thanks.

0 Jimmy Hua over 5 years ago in reply to Eric Mac

TI__Guru 50120 points

Hi Eric,

It seems like the compensation table was changed because the values were not always stable over the entire operation range and with part to part variations. To better provide a stable and recommended circuit the system engineer redid the table with the new component values such that the crossover frequency is roughly one-tenth of the switching frequency over the device's operating ranges.

Regards,
Jimmy

Power management

Power management forum

LMZ10504: Compensation Network changes in data sheet revisions