TPS82085/about PSM mode ripple data

Tsukui Yusuke

Guru 21930 points

Other Parts Discussed in Thread: TINA-TI

Hi,

Could you tell me about Figure 14. Input and Output Ripple in PSM Mode in data sheet page 13?
Please tell me the measurement conditions of this graph.
Customers want this ripple voltage level.
However,
It could not be realized under the conditions of the evaluation board.
Could you give me your advice?

Best regards,

Yusuke/Japan Disty

over 8 years ago

0 Chris Glaser over 8 years ago

TI__Guru**** 150820 points

The test conditions are listed at the top of page 12. What result did you get?

0 Tsukui Yusuke over 8 years ago in reply to Chris Glaser

Guru 21930 points

Chris-san,

Thank you for your response.
Customer is trying to TINA-TI simulation.
However, Simulation has a large ripple voltage than the data sheet.
Therefore, customers want to know the feasibility of the ripple voltage in data sheet.
5483.TPS82085 sim.pdf

Best regards,
Yusuke/Japan Disty

0 Chris Glaser over 8 years ago in reply to Tsukui Yusuke

TI__Guru**** 150820 points

The graphs in the D/S are measured. TINA is a model. So, your question is: why does the model not match the measurement?

Let me move this to the models forum for them to answer.