TPS63070 Toggling VSEL Pin

Ryan May

Other Parts Discussed in Thread: TPS63070

Hello,

I wanted to know if there has been any testing to take the TPS63070 and toggle the the VSEL pin in a PWM fashion to roughly create an PWM controlled variable output voltage supply for buck-boost applications.

over 9 years ago

0 Sabrina over 9 years ago

TI__Expert 8420 points

As far as I know, there was no testing conducted in this direction, I would be surprised if this idea works.
Why do you need this feature? What is your end application?

0 Ryan May over 9 years ago in reply to Sabrina

TI__Genius 13700 points

Hello Sabrina,

What are your concerns with the viability of this idea?

Do you have test data that shows how the chip responds with the feedback network is switched just once in the middle of operation?

Why do I want this? I want to use a single chip to perform motor drive with a boosted voltage straight from a Li-Ion battery.

0 Chris Glaser over 9 years ago in reply to Ryan May

TI__Guru**** 150900 points

If you just want to create an adjustable output voltage from a PWM signal input, this calculator shows how to do this through the FB pin: www.ti.com/.../toolssoftware

0 Ryan May over 9 years ago in reply to Chris Glaser

TI__Genius 13700 points

Hello Chris,

I think with this information you have pointed me in a better direction than what I was even thinking so thank you for your support. This thread is closed.

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TPS63070 Toggling VSEL Pin