Other Parts Discussed in Thread: TPS55165-Q1, TPS55288
Hi,
Why the adjustable output voltage range is limited from 5.7V to 9V? While its fixed output variation, TPS55165-Q1 is set at 5V/12V output?
Thank you,
John
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Hi,
Why the adjustable output voltage range is limited from 5.7V to 9V? While its fixed output variation, TPS55165-Q1 is set at 5V/12V output?
Thank you,
John
Dear Sir,
it may has stability problem when Vo>9V. To ensure performance, the datasheet only writes 9V maximum.
Hi Helen,
Thank you for reply. But why TPS55165-Q1 can be set to 5V or 12V output? I think the only difference is the feedback resistive divider is integrated on chip.
Regards,
John
Hi John,
Very good question. Actually this part is transferred to our product line years ago. We also not know the exact root cause.
If possible, I suggest you use our new part TPS55288, but it need two extra Buck FET in the design. You can accept my friendship request if wanted.
Hi Helen,
I have accepted your request.
The two external FETs make the ckt very complicated, i am afraid customer will go to competitor's device which is much more simplier. (strangely i cannot find the datasheet on web but EVM datasheet) Could you please help me check if it is possible to use TPS55160 for 10V output?
Thank you!
John
Hi John,
Since the datasheet only guarantee 9V output, so we must keep this limit though it looks OK by test.
Could u please share the detailed application with us? Like Vin, Vo, Io so that we can recommend a better one to you.
Hi Helen,
I am actually do not think it make sense.
The application is power supply for DC E-meter (for DC charging pile), Vin=5V to 36V, Vo=10V, Io=0.5A.
Thank you!
John
Hi John,
The only fit part now is TPS55288. Let's discuss it through email.