Constant current PFM/PWM Boost Converter

umamaheswar peta

Expert 1370 points

Other Parts Discussed in Thread: TPS63000

Hi,

Can any one help to suggest Constant Current PFM/PWM boost converter for below Specs:

Vin : 1.5-5V

Vout : 1.8-5.5V

I Out : 200mA.

Kindly suggest part ASAP.

Rgds,

Uma Mahesh

over 10 years ago

0 Chris Glaser over 10 years ago

TI__Guru**** 150830 points

What do you mean by constant current? Are you driving LEDs?

What is making your Vin and Vout range be so wide? You will need to buck and boost, so a device like TPS63000 would be required.

0 umamaheswar peta over 10 years ago in reply to Chris Glaser

Expert 1370 points

Hi Chris,

Thanks for your mail.

Yes we are planning to drive the LED's.

TPS63000 suits our req but any cost eff solution.

Rgds,

uma Mahesh

0 Chris Glaser over 10 years ago in reply to umamaheswar peta

TI__Guru**** 150830 points

Your very wide Vin and Vout range does not support a low cost solution. Can you explain why they are so wide? Especially, the Vout range should just be based on the forward voltage of the LED and should not vary as much.

What type of application is this for?

Power management

Power management forum

Constant current PFM/PWM Boost Converter