technical support required for LM25118

Amarender Reddy22

Intellectual 350 points

Other Parts Discussed in Thread: LM25118

Dear sir

We have selected Texas instrument IC LM25118MH ( buck -boost Converter )

In put Voltage: 9.0VDC to 16.0VDC

Out Put Voltage : 12.5V @ 6..0A

while during test its working above 16VDC to 22VDC,but required Voltage 9 to 16VDC,and send the related documents.

please give the solution for above problems and send the one evaluation board.

Awaiting for your valuable replay

With regards

B Venkat reddy

Ph:9705911177

over 9 years ago

0 Britt Brooks - Online Design Tools over 9 years ago

TI__Mastermind 41310 points

Amarender,

I have moved your post to the Non-Isolated DC-DC forum.

0 JohnTucker over 9 years ago in reply to Britt Brooks - Online Design Tools

TI__Guru**** 191445 points

Can you post your schematics ans some waveforms that depict your issue? Make sure to include the SW node. Show the working condition above 16 V input and the non working condition below 16 V.

0 Amarender Reddy22 over 9 years ago in reply to JohnTucker

Intellectual 350 points

Dear sir

We have worked on LM25118MH Device ,some technical issue raised ,please support me. or please provide with evaluation board ( 12.0V @3.0A or 12.0V @ 6.0A )

and give the technical team person name and contact number.

Awaiting for your replay.

With regards
B Venkat reddy
9705911177

0 Amarender Reddy22 over 9 years ago in reply to JohnTucker

Intellectual 350 points

DC TO DC CIRCUIT 10.05.2016.pdf

Awaiting for your replay.

With regards
B Venkat reddy
9705911177

0 JohnTucker over 9 years ago in reply to Amarender Reddy22

TI__Guru**** 191445 points

Thanks for posting your schematic. Do you have waveforms that demonstrate your issue? You can order the LM25118 EVM here:

www.ti.com/.../lm25118eval

The EVM is rated for 12 V out at 3 A.

0 Amarender Reddy22 over 9 years ago in reply to JohnTucker

Intellectual 350 points

Dear sir

We have worked LM25118MH,12.0V@6.0A its worked input Voltage above 16 to 22VDC but if required 10 to 15VDC.

Please give the solution immediately

awaiting fir your replay.

With regards

B Venkat reddy

0 Amarender Reddy22 over 9 years ago in reply to Amarender Reddy22

Intellectual 350 points

Dear sir

Please provide the Out pur diode VB40100C

With regards
B Venkat reddy

0 Amarender Reddy22 over 9 years ago in reply to Amarender Reddy22

Intellectual 350 points

Dear sir

please help to this design 12.0V@6.0A we have worked on LM25118MH ,but out put effiency come to 78% only at input Volt.16.0VDC but required the effiency more then 86% at input Voltage 12.0VDC, ( input Voltage oprating : 9 to 16.0VDC Only )

Pleaes give the solusations immediately.

Awaiting for your valuable replay.

lot of delay for this projuct please give the solusation immediately.

And give the local technical team person telephone or mail ID ( in hyderabad team only )

With regards
B Venkat reddy

0 JohnTucker over 9 years ago in reply to Amarender Reddy22

TI__Guru**** 191445 points

Webench indicates you should get greater than 91 % efficiency for any input voltage in your range for load currents between 2 and 6 A. Did you follow the webench schematic and bill of materials exactly?

0 Amarender Reddy22 over 9 years ago in reply to JohnTucker

Intellectual 350 points

With Wave forms 12.5V@6.0A.pdfDear sir

Please find attached webench schematic same as components

please give the calculated value.

With regards
B Venkat reddy

0 Amarender Reddy22 over 9 years ago in reply to Amarender Reddy22

Intellectual 350 points

Dear sir

Pleasegive the solusation for this model 12.0V@6.0A

Awaiting for your valuable replay

With regards

B Venkat reddy

Power management

Power management forum

technical support required for LM25118