TPS568215: Acp ask

Aaron Hsu

Intellectual 565 points

Part Number: TPS568215
Other Parts Discussed in Thread: TPS56C215,

1. What is the Acp of TPS568215 and TPS56C215?
Can we know Acp from the Bode plot in datashett?

2.Is the Acp of TPS568215 and TPS56C215 constant?

over 4 years ago

+1 Andrew Xiong over 4 years ago

TI__Expert 5470 points

Hi,

1. Yes. You can refer to the below application note: "Acp of a device can be estimated by checking the gain before double poles, which equals to 20lg(Acp*Vref/Vo)dB in bode plot."

https://www.ti.com/lit/an/slvaf11/slvaf11.pdf?ts=1623391528947&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253DSLVAF11%2526nr%253D2

2. For those two devices, yes.

Thanks,

Andrew

0 Aaron Hsu over 4 years ago in reply to Andrew Xiong

Intellectual 565 points

HI Andrew

I think it should be 20log(Acp*Vref/Vo)dB instead of 20lg(Acp*Vref/Vo)dB

log ?

+1 Andrew Xiong over 4 years ago in reply to Aaron Hsu

TI__Expert 5470 points

Hi Aaron,

Here log₁₀b is denoted by lg b.

Thanks,

Andrew

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TPS568215: Acp ask