LM5148: Design to generate 36VDC@5A

Alpesh Borad

Intellectual 990 points

Part Number: LM5148
Other Parts Discussed in Thread: LM5145, LM70860

Tool/software:

Hello,

I am going to Design the DCDC power supply and below are the requirements

Input voltage : 48VDC (41 VDC to 57VDC)
Input current : 4.1A
Output Voltage : 36VDC
Output current : 5A

Kindly provide the sugestion whether LM5148 is the right selection OR any other IC is suitable for thgis application.

Regards,

Alpesh

over 1 year ago

0 Timothy Hegarty over 1 year ago

TI__Guru 72632 points

Hi Alpesh,

The LM5148 80V current-mode controller is one option here. You can also consider the LM5145 75V voltage-mode controller, particularly as this has a 7.5V gate drive that provides faster switching and enables the use of standard-logic FETs (not 5V logic-level gate drive).

Another option may be the LM70860 80V, 6A converter (with integrated FETs) https://www.ti.com/product/LM70860-Q1.

Regards,

Tim

+1 Alpesh Borad over 1 year ago in reply to Timothy Hegarty

Intellectual 990 points

Hello Tim,

Thank you very much for your input.

Regards,

Alpesh

0 Timothy Hegarty over 1 year ago in reply to Alpesh Borad

TI__Guru 72632 points

No problem, Alpesh. Thanks for the question.

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LM5148: Design to generate 36VDC@5A