TPS1663: EFUSE clarification

Sathya Priya

Intellectual 270 points

Part Number: TPS1663
Other Parts Discussed in Thread: TPS2663

Tool/software:

Hi Team,

We would like to know is there any way to simulate this efuse circuit?

whether through webench it is possible?

Regards,
Sathya Priya N.

3 months ago

0 Amrit Jit 3 months ago

TI__Mastermind 37001 points

Hello Sathy,

TPS1663 PSPICE model is available on ti.com

You can use PSPICE for TI free version.

Thanks

Amrit

0 Sathya Priya 3 months ago in reply to Amrit Jit

Intellectual 270 points

Thanks Amrit for your response.

1) We would like to know how the IMON resistor value is calculated, need clarification on this.

2) Also, I will share our schematic for your review. Could you please provide your review feedback on this?

requirement:

UVLO: 10V
OVLO: 30V

ILIM:2.6A (upto 2.5A it should allow).

3) Also, about the gate voltage resistor divider.

4) Can the pgood pin and fault can be tied together ?

Regards,
Sathya Priya N.

0 Amrit Jit 3 months ago in reply to Sathya Priya

TI__Mastermind 37001 points

Hello Sathya,

You can use below design calculator to get RIMON and UVLO,OVLO values.

https://dr-download.ti.com/design-tools-simulation/calculation-tool/MD-QV4CzjZsl1/01.00.00.0B/slvc765b.zip

The external PFET is for reverse plority?

You can use TPS2663 in that instance. It drives external NFET for RPP and RCB.

Thanks

Amrit

+1 Sathya Priya 3 months ago in reply to Amrit Jit

Intellectual 270 points

HiAmrit,

Yes PFET is for reverse polarity.

Ok, i checked the calculator. It difficult to find the formulas and calculation done in that excel.

It would be great if you Could you clarify for these two below questions?

1) For IMON resistor, our requirement is output current max is 2.5A? How to calculate it resistor value? please provide more clarity.

2) ILIM resistor value, 18A (as per datasheet) divide by 2.5 A = 7.2K could you confirm this?

Thanks in advance

0 Amrit Jit 3 months ago in reply to Sathya Priya

TI__Mastermind 37001 points

Hello Sathya,

These equations are available in datasheet with more clarity and explanation. Please refer to datasheet for more details.

1. for 2.5A , you can put 51.10Kohms RILIM which will give max value of 3.65V.

2. Yes, 7.2K RILIM.

Thanks
Amrit

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TPS1663: EFUSE clarification