UCD9090-Q1: Active trim support for other DC/DC regulators

Al Franquiz

Prodigy 30 points

Part Number: UCD9090-Q1

Tool/software:

Does the UCD9090-Q1 active trimming function support dc/dc regulators other than TI's regulators?

1 month ago

0 Troy Johnson 1 month ago

TI__Intellectual 1855 points

Hi,

The UCD9090-Q1 active trimming function can work with non-TI regulators.

Regards,

Troy

0 Al Franquiz 1 month ago in reply to Troy Johnson

Prodigy 30 points

In the information I have found regarding the Trim circuit configuration, including the UCD90xxx Voltage Margining Circuit Design Tool, the diagram shows an R1 resistor which is also part of the Margining Circuit Design Tool input. The supplies I am using do not have this resistor as part of the VFB. Can R1 be ignored in the Margining Circuit Design Tool input?

0 Troy Johnson 1 month ago in reply to Al Franquiz

TI__Intellectual 1855 points

Hi,

The value of resistor R1 is part of the circuit which sets the nominal, minimum and maximum vout voltages for margining. As such it is necessary.

Also to clarify my previous response, there is nothing in the UCD9090-Q1 that prevents it from working with a non-TI regulator. If that regulator calls for a different setup than the UCD9090-Q1, however, I cannot say whether it will work or not as it depends on whether that regulator can work with the UCD9090-Q1 setup.

Regards,

Troy

0 Al Franquiz 1 month ago in reply to Troy Johnson

Prodigy 30 points

Hi Troy, I need to get off the the public forum. Could you send me your contact information so I can send you some detailed questions and circuits?

0 Troy Johnson 1 month ago in reply to Al Franquiz

TI__Intellectual 1855 points

Hi,

I will send you an email to discuss this.

Regards,

Troy

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UCD9090-Q1: Active trim support for other DC/DC regulators