TPS24751: tps24751

maheswari V

Prodigy 75 points

Part Number: TPS24751

Tool/software:

Hi team
we are using the TPS24751 for E fuse monitoring

Our thershold limits are given Below

OV:5.25V

UV:4.75V

Current limit:6.6A

I have calculated by using the formula present in data sheet I am getting the OV exact value but lower threshold i was not able to get

Condidered resistor values

1.R1-33k

2.R2-10k

3.r3-15k

can you please correct me if I have done wrong and also how to calculate the current sense value

6 months ago

0 Arush Gupta 6 months ago

TI__Mastermind 38135 points

Hi Maheswari,

Can you check and tell me if following works for your application.

R1 --> 53.8k

R2 --> 10k

R3 --> 95k

We have a design calculator in the product folder. Kindly use that.

Best Regards,
Arush

0 maheswari V 6 months ago in reply to Arush Gupta

Prodigy 75 points

By using these values I am not getting the threshold values I am using this formula for calculating the threshold

0 Arush Gupta 6 months ago in reply to maheswari V

TI__Mastermind 38135 points

Hi Maheswari,

I am assuming R1 as 33k, on solving 2 linear equation with two variable, we get R2 = 1.25k, R3 = 11.85k.

Kindly verify this.

Best Regards,
Arush

0 maheswari V 6 months ago in reply to Arush Gupta

Prodigy 75 points

Thanks for the reply

can you please tell me how to calculate the RIMON and Rset values considering the 10A current limit.

We need to consider the 2mE as the Rsense value

0 Arush Gupta 6 months ago in reply to maheswari V

TI__Mastermind 38135 points

Please read the datasheet (section 9.3 and 10.2)

0 maheswari V 6 months ago in reply to Arush Gupta

Prodigy 75 points

I have drafted the schematics like this. By considering the UV and 0V as the 5.25V and 4.65V

Tell me any if I need to change anything in the schematics.

In the data sheet OUT pin they have mentioned like it will connected with the source of internal MOSFET.

0 Arush Gupta 6 months ago in reply to maheswari V

TI__Mastermind 38135 points

Hi Maheswari,

Can you recheck ILIM value for the selected BOM values.

Best regards,
Arush

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TPS24751: tps24751