TPS25940-Q1: surrounding component value

kura

Genius 4680 points

Part Number: TPS25940-Q1
Other Parts Discussed in Thread: TPS25940

Could you please advise surrounding component value.

CIN,R2,R3,CdVdT,R6,R7,RILIM,RIMON,Cout

They conider to use TPS25940-Q1 at below condition.

Vin,Vout typ6.5V

V(OVP):8V

ILIMT:1.0A

They will use PGOOD as over current FLAG(1A).

When they detect over current FLAG,they will shutdown this part using with EN.

Please see attached.

TPS25940-Q1_20170616.pdf

Regards,

over 6 years ago

0 Rakesh over 6 years ago

TI__Guru* 95891 points

Hi Kura,

What is the application use case here?
Please make use of design calculator available at www.ti.com/.../toolssoftware

Here are the values.
Cin= 0.1uF
R2 = 700k
R3= 100k
cdVdT : what is the Cout and load at startup?
R6 = R7 = 10kohm
Rilim = 89kohm
Rimon = 19.2 kohm

Regards
Rakesh

0 kura over 6 years ago in reply to Rakesh

Genius 4680 points

Rakesh-san

Thank you your sending TPS2594x Design Calculation Tool to us.

Please let us know about this tool

If they don't use UVLO function,what value they hould enter to UVset cell.

regards,

0 Rakesh over 6 years ago in reply to kura

TI__Guru* 95891 points

Hi Kura-san,

You can set any value greater than 0.92V (given in UVref, cell 103) for UVset. Now the device will operate till 2.7V Vin

Regards
Rakesh

0 Rakesh over 6 years ago in reply to Rakesh

TI__Guru* 95891 points

Hi Kura-san,

Please use 2.7V for UVset cell as it is the recommended minimum input operating voltage for the device.

Regards
Rakesh

Power management

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TPS25940-Q1: surrounding component value