LM5145-Q1: DC- DC buck regulation 24V to 12V converter, Load 25A

jayanthi budati

Prodigy 90 points

Part Number: LM5145-Q1
Other Parts Discussed in Thread: LM5145, LM5146,

Tool/software:

Hi team,

I am looking for a design solution for DC- DC buck regulation 24V to 12V converter in one of our Automotive projects.

The input voltage range: 5V to 48V.

The nominal input voltage :24V.

The output voltage: 12V

The Continuous load current: 20A.

The peak load current: 25A

could you kindly suggest design solution for DC DC Buck converter.

Thanks,

jayanthi.

4 months ago

0 Timothy Hegarty 4 months ago

TI__Guru 63577 points

Hi Jayanthi,

Please use the LM5145 quickstart calculator to assist with component selection https://www.ti.com/tool/LM5145DESIGN-CALC.

Note the LM5145 EVM is 5V/20A/225kHz using 80V FETs. However, you can likely use 60V FETs here given Vin-max = 48V. Also, take a look at the apps examples in the LM5145 and LM5146 data sheets.

Regards,

Tim

0 Timothy Hegarty 4 months ago in reply to Timothy Hegarty

TI__Guru 63577 points

Here is a quickstart file as a starting point for this design (using 60V NexFETs).

LM5145_quickstart_calculator_A5.xlsm

0 jayanthi budati 3 months ago in reply to Timothy Hegarty

Prodigy 90 points

Hi team,

Thank you for reply, Please let me know if you can review our schematic for LM5145-Q1. I will provide schematic mail.

0 Timothy Hegarty 3 months ago in reply to jayanthi budati

TI__Guru 63577 points

I just send you a friend invite where we can share ours emails for offline correspondence.

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LM5145-Q1: DC- DC buck regulation 24V to 12V converter, Load 25A