TPS5433

Bharati Aravatagi

Other Parts Discussed in Thread: TPS54332

Hi,

I am using TPS5433 to convert power to 4 volts, 2Amp. As per my understanding no matter what is inpt voltage between 3.5V to 28V my output voltage will be 4V when I configure output voltage to be 4V...Am I right??

But while testing I noticed output is going low to 2.7V when I connect input to 5.5V.

Output is 4V anything above 5.5V and goes low to 2.7V as soon as I decreas input to 5.4V.

Please suggest me how can I make input range of 3.5V to 28V to be valid.

Regards

Bharati

over 9 years ago

0 Kevin LaRosa over 9 years ago

TI__Genius 17380 points

Hi Bharati,

I've moved this post to the non-Isolated DC/DC forum for additional help.

0 JohnTucker over 9 years ago in reply to Kevin LaRosa

TI__Guru**** 191445 points

Can you provide the correct part number?

0 Bharati Aravatagi over 9 years ago in reply to JohnTucker

Prodigy 145 points

Its "TPS54332DDAR"

0 JohnTucker over 9 years ago in reply to Bharati Aravatagi

TI__Guru**** 191445 points

No you are mistaken. TPS54332 is a buck converter only. It cannot boost the input voltage to a higher output. To get 4 V output,the input voltage must be higher. Usually we recommend at least 2.1 V of headroom for all load conditions.

0 Bharati Aravatagi over 9 years ago

Prodigy 145 points

Okay. I thought the input can be anything in the range 3.5V to 28V.

Thank you for the support.

Regards

Bharati

Power management

Power management forum

TPS5433