DRV10983: BLDC Ceiling Fan Controller with Sensor-less Sinusoidal Current Control, TIDA-00386 (Flyback Transformer Datasheet Discrepancy)

Ajay Nagarkar

Part Number: DRV10983

Flyback Transformer Datasheet Discrepancy

Hello,

I am working on a BLDC motor driver using the DRV10983. In the application note it refers to a transformer that is used in the AC-DC to generate 24VDC from AC mains input. Here is the datasheet of the transformer.

http://www.ti.com/lit/ug/tidu354/tidu354.pdf

We are building that transformer right now but we have noticed a discrepancy between the bobbin datasheet and the photograph of the assembled transformer.

Please compare Page 2 and Page 3 in the datasheet.

Can someone please throw light on this or if there is a corrected datasheet that will help too.

Thanks and Regards

Ajay

over 5 years ago

0 Ajay Nagarkar over 5 years ago

Prodigy 70 points

Also some pictures of this transformer from both sides will also help
-Ajay

0 Brian Schmidt over 5 years ago in reply to Ajay Nagarkar

TI__Intellectual 2600 points

Ajay,

Our experts have been notified and we should have a response soon.

Thanks,

Brian

0 Ajay Nagarkar over 5 years ago in reply to Brian Schmidt

Prodigy 70 points

Hello Brian,

Any inputs on this. We are stuck on the transformer manufacturing side of things.

Any help will be appreciated.

Ajay

0 Brian Schmidt over 5 years ago in reply to Ajay Nagarkar

TI__Intellectual 2600 points

Ajay,

Sorry for the delay. The originators of this design are no longer at TI so I haven't been able to find the best information.

It looks like the TI design was done with a different assembly of the transformer. I have found one here that is already assembled onto the board. I've included pictures of a board without the transformer as well as multiple shots of the board with the transformer.

Let me know if this is sufficient or if I need to try to disassemble the board to get the transformer standalone.

Thanks,

Brian

0 Ajay Nagarkar over 5 years ago in reply to Brian Schmidt

Prodigy 70 points

Hello Brian,
Thanks for your email and the photos. This seems to be a good start. Let me see what I can do with this and if needed I might have to trouble you with the transformer photograph.
Not yet though
Appreciate your help.
Ajay

Motor drivers

Motor drivers forum

DRV10983: BLDC Ceiling Fan Controller with Sensor-less Sinusoidal Current Control, TIDA-00386 (Flyback Transformer Datasheet Discrepancy)