Question about TPS5430 inverting buck-boost pspice simulation

user1341534

Other Parts Discussed in Thread: TPS5430, TPS5430EVM-342

I want to apply the TPS5430 in my application which converted +12V to -5V. then TPS5430 PSpice Transient Model had been downloaded from TI website(http://www.ti.com.cn/product/cn/TPS5430/toolssoftware), and modified the schematic as shown below. It is same as TPS5430EVM-342 2.25A Inverting Buck Boost Regulator Evaluation Module. But it is doesn’t work, could you please help me about this problem. Thanks in advance.

The simulation result as shown below

over 9 years ago

0 Aleksandras_Kaknevicius over 9 years ago

TI__Genius 15740 points

Hi,

This device falls under the DC/DC forum. I will go ahead and move this post there.

Thanks,

Alek Kaknevicius

0 JohnTucker over 9 years ago in reply to Aleksandras_Kaknevicius

TI__Guru**** 191445 points

This is an easy one. The pspice model has the GND pin hard connected to 0V. You cannot connect it to other than "GND". You cannot directly model the inverting buck boost circuit with that model.

0 user1341534 over 9 years ago in reply to JohnTucker

Prodigy 20 points

Is there any solution with the model, which chips' Pspice model can implement inverting buck boost circuit?

0 JohnTucker over 9 years ago in reply to user1341534

TI__Guru**** 191445 points

Not that I know of. You might try posting in the modeling forum.

0 JohnTucker over 9 years ago in reply to JohnTucker

TI__Guru**** 191445 points

You might also try ordering the EVM. You can modify it to suit your needs.

Power management

Power management forum

Question about TPS5430 inverting buck-boost pspice simulation