LM5155: How much current is it output at 200Vdc?

Kengo.Y

Guru 10635 points

Part Number: LM5155
Other Parts Discussed in Thread: TIDA-020013

Hi team.

I'd like to use LM5155 to drive the piezo element.

Piezo will be driven at 200Vdc.

How much current is LM5155 output in our usecase?

And then I think that 200V booster circuit can not be configured at 24V input.

So, I'm planning of a configuration like a fig44 in data sheet p.31 .

How much current does this configuration assume(fig.44)?

Could you give me some advice.

Sincerely.

Kengo

over 5 years ago

0 Garrett Roecker over 5 years ago

TI__Mastermind 21720 points

Hi Kengo,

Thanks for reaching out with your questions. Can you please let me know what the maximum current required for the 200V output is in your system? This will allow me to help with the proper circuit selection for your application.

Thanks,

Garrett

0 Kengo.Y over 5 years ago in reply to Garrett Roecker

Guru 10635 points

Hi Garrett.

Thanks for the reply.
The out put will be up to 50mA .
I'm waiting for your good advice.

Sincerely.
Kengo.

0 Garrett Roecker over 5 years ago in reply to Kengo.Y

TI__Mastermind 21720 points

Hi Kengo,

Please take a look at TIDA-020013. The LM5155 portion of this design should meet the application requirements. This implements the charge pump on the output rail.

Thanks,

Garrett

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LM5155: How much current is it output at 200Vdc?