PSPICE-FOR-TI: Pspice model of TPS43060 not switching

Tarun Bajaj1

Part Number: PSPICE-FOR-TI
Other Parts Discussed in Thread: TPS43060

Hi,

I am trying to simulate the TPS43060 in Pspice. But, the PGOOD of the TPS43060 does not go high. From the datasheet, I do not see a reason why this would be so. Vin = 20V, Vout required = 40V, Can someone let me know what I am missing?

I am attaching the schematic of the Pspice design and the corresponding graphs. I have used the TINA reference design for the TPS43060 which works fine and attached those graphs for reference as well.

4532.Schematic.pdf BoostPspice.pdf BoostTINA.pdf

over 2 years ago

0 Yinsong Cai1 over 2 years ago

TI__Expert 7450 points

Hi Tarun,

Thank you for your interest in TPS43060.

Have you checked the EN voltage in the PSpice simulation?

Thanks,

Yinsong

0 Tarun Bajaj1 over 2 years ago in reply to Yinsong Cai1

Prodigy 70 points

Yes, En is pulled up to VCC (+7.5 V). I can see this voltage at the EN pin

0 Yinsong Cai1 over 2 years ago in reply to Tarun Bajaj1

TI__Expert 7450 points

Hi Tarun,

Thank you for the confirmation. This is weird because TINA model is usually translated from Pspice model. Are the Pspice schematic the same as TINA? And have you tried running the original schematic in PSpice?

Thanks,

Yinsong

0 Tarun Bajaj1 over 2 years ago in reply to Yinsong Cai1

Prodigy 70 points

Yes, both the schematics are the same.

No, I did not try running this in Pspice. I will try that.

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PSPICE-FOR-TI: Pspice model of TPS43060 not switching