TPS62007: Can i connect 100uF at the output

Sajna K

Prodigy 190 points

Part Number: TPS62007

i have a requirement that Vin 5V, Vout 3.3V, Io 375mA

I have a load which is having 100uF at its input.

this Buck converter output is given to the load.

my Buck converter should have current limiting property to avoid inrush current.

Also it should not have output discharge function. Because input to the load should stay for min 500ms through the 100uF.

i have selected TPS62007.

can i connect 100uF at its output?

if you have any other solution let me know

over 4 years ago

0 Excel Regidor over 4 years ago

TI__Mastermind 30921 points

Hi Sajna,

If you intend to use 100uF output capacitor, please check the phase margin and it should be higher or equal to 40 deg. at minimum and max ambient temperature to ensure the control loop is stable.

Best regards,

Excel



0 Sajna K over 4 years ago in reply to Excel Regidor

Prodigy 190 points

Thank you for the reply :)

Do you have any application note to calculate the phase margin as you mentioned?

Also Do you have any suggestion on other TI parts ,which is suitable to my application?

0 Excel Regidor over 4 years ago in reply to Sajna K

TI__Mastermind 30921 points

Hi Sajna,

There is no calculation to determine the phase margin. It requires actual bode plot measurement (see attached file).

3326.bode plot measurement_snva364a.pdf

Are you looking for a P2P replacement or as long as it fits requirement? Please provide your key parameters/specs so I can provide a suitable alternate part.

Best regards,

Excel

0 Excel Regidor over 4 years ago in reply to Excel Regidor

TI__Mastermind 30921 points

Hi Sajna,

If you don't have further question, I will close this thread. You can re-open this thread by posting your queries.

Best regards,

Excel

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TPS62007: Can i connect 100uF at the output