PFC single phase dual boost bridgeless?

Antonio Faggio

Other Parts Discussed in Thread: UCC28070, UCC28180, PMP9640, UCC28051, UCC28951

Hi,

Do we have PFC single phase dual boost bridgeless to propose to customer for new designs? Write also me in private for any roadmap we might have.

Many Thanks,

Antonio

over 6 years ago

0 John Griffin1 over 6 years ago

TI__Mastermind 34465 points

Hello Antonio,

Im not sure what you mean by single phase dual boost.

Are you looking at a requirement for a single phase input AC with an interleaved pfc application ?
Do you know what the power requirement is and why is bridgeless being considered ?

If you wish you may email me directly to review your application.

Regards

John

0 Antonio Faggio over 6 years ago in reply to John Griffin1

TI__Expert 8240 points

Hi John,

Unfortunately customer has no clear ideas about it. It is only a generic request for now.

Targets are to hit better efficiency and do not adopt a digital solution with DSP but only analog solutions.

PFC power should be 2KW since it should be coupled with a controller/converter.

Many Thanks,

Antonio

0 John Griffin1 over 6 years ago in reply to Antonio Faggio

TI__Mastermind 34465 points

Hi Antonio,

There are 3 reference designs that use a bridgeless configuration.
PMP40261 uses the UCC28070 in an 800W application

TIDA-010028 uses the UCC28180 in a 300W design

PMP9640 is a 300W design using the UCC28051 controller.

The first two of these designs use a CCM type controller and they can be scaled up for a 2kW application.

Many users of the UCC28070 use this semi- bridgeless type of topology and it can achieve good efficiency especially at low input voltages.

This application report explains the theory behind it all.

http://www.ti.com/lit/an/slua517/slua517.pdf?keyMatch=UCC28070&tisearch=Search-EN-technicaldocument

Hope this helps.

Regards

John

0 Antonio Faggio over 6 years ago in reply to John Griffin1

TI__Expert 8240 points

Hi John,

Customer is ok with UCC28951 but asking whether we have some controller similar with UCC28951 but simpler so without SR control for instance?

Many Thanks,

Antonio

0 John Griffin1 over 6 years ago in reply to Antonio Faggio

TI__Mastermind 34465 points

Antonio,

The UCC28951 is a phase shift full bridge controller, not a pfc controller.

But if you do not wish to use synchronous rectification then all you need do not use OUTE and OUTF pins.

Replace the synchronous rectifiers with rectifier diodes.

Your application is for a 2kW power supply and you will find that the flexibility offered by the UCC28951 in controlling this high power has the benefits of multi level fault protection as well as overall overall system efficiency.
A "simpler" type of PWM controller will not have these benefits

This UCC28951 is a 24 pin PWM controller and it is not as difficult as it may seem to work with.

Regards

John

0 John Griffin1 over 6 years ago in reply to John Griffin1

TI__Mastermind 34465 points

Hi Antonio,

It looks like your question now is a repeat of the post on

https://e2e.ti.com/support/power-management/f/196/t/851648

I am therefore closing this post.

Please open a new post if you have any new questions.

Regards

John

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PFC single phase dual boost bridgeless?