TPS551892-Q1: Phase and Gain Margin Equations Used in Calculation Tool

Nick Koeller

Part Number: TPS551892-Q1
Other Parts Discussed in Thread: TPS552892

Tool/software:

Hi. Would you be able to provide the equations used in the TPS552892 Calculation Tool V1.0 to get the phase and gain margins when operating in Buck Mode. I see that the TPS551892-Q1 has equations for Boost mode, but I don't see anything stated for buck mode.

Thank You,

Nick

4 months ago

0 Mulin Yuan 4 months ago

TI__Genius 14950 points

Hi Nick,

If you set Vout<Vin, the excel tool will automatically change to buck mode.

Regards,

Mulin.

0 Nick Koeller 4 months ago in reply to Mulin Yuan

Prodigy 20 points

Hi Mulin,

I actually need to run ~714 permutations of the calculation for my customers requirements so I need to do these calculations outside of excel which is why I am looking for the functions that were used to generate these plots when Vout<vin.

Thank you,

Nick

0 Mulin Yuan 4 months ago in reply to Nick Koeller

TI__Genius 14950 points

Hi Nick,

I am sorry, due to TI confidential limitation, I cannot share the unencrypted excel tool. You can use common equation for buck converter from a buck datasheet. Thanks.

Regards,

Mulin

Power management

Power management forum

TPS551892-Q1: Phase and Gain Margin Equations Used in Calculation Tool