LM5143-Q1: LM5143-Q1

Kamaljit Kaur

Prodigy 20 points

Part Number: LM5143-Q1
Other Parts Discussed in Thread: LM5143, LM25143, LM25148

Hi,

Not able to customize design for Vout 3.3V and Iout 60A (Single output Dual Phase) in WEBENCH for LM5143-Q1.

Regards

Kamal

over 3 years ago

0 Timothy Hegarty over 3 years ago

TI__Guru 74302 points

Hi Kamal,

60A is probably above the WEBENCH limit. Take a look at the LM5143 (commercial version) datasheet online -- apps example #3 is 5V/50A. You can also use the LM5143 quickstart calculator.

Regards,

Tim

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

Thanks Tim.

I will be using LM5143-Q1 for 3.3V 60A . Do I need dual phase or from single phase i can achieve?

Regards

Kamal

0 Timothy Hegarty over 3 years ago in reply to Kamaljit Kaur

TI__Guru 74302 points

Kamal, 60A is too much for a single phase. Even 30A/phase is quite high (depending on the input voltage and max ambient temperature).

0 Timothy Hegarty over 3 years ago in reply to Timothy Hegarty

TI__Guru 74302 points

PS: We just released the LM5143 and LM25143 (commercial versions of the LM5143-Q1). See apps example #3, which is 5V/50A.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

I am looking AEC-Q100 qualified .Input voltage 12V and output voltage 3.3V,60A.

LM5143 and LM25143 is not AEC-Q100 certified.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

Hi Tim

Is LM5143-Q1 recommended for 3.3V ,60A(output) from 12V as input?

0 Timothy Hegarty over 3 years ago in reply to Kamaljit Kaur

TI__Guru 74302 points

Yes, the LM5143-Q1 is the best solution here, particularly if Q grade is required.

0 Timothy Hegarty over 3 years ago in reply to Timothy Hegarty

TI__Guru 74302 points

You can use the quickstart calculator (see product folder) to assist with circuit design and component selection.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

Thanks Tim. I will go forward with LM5143-Q1.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

Yeah started with quickstart calculator for component selection for Vout 3.3V@60A.

Thanks Tim for quick clarification.

0 Timothy Hegarty over 3 years ago in reply to Kamaljit Kaur

TI__Guru 74302 points

No problem. Send on the completed quickstart file if you'd like me to review it.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

I will definitely like to get it reviewed .Will send shortly.

0 Timothy Hegarty over 3 years ago in reply to Kamaljit Kaur

TI__Guru 74302 points

Thank, you, Kamal.

0 Kamaljit Kaur over 3 years ago in reply to Timothy Hegarty

Prodigy 20 points

LM5143-Q1 Quickstart Tool - revA9_60A.xlsm LM5143-Q1 Quickstart Tool - revA9_60A_BUK9M3R3.xlsm

Hi Tim,

Please find the quickstart files with different mosfet options.

Kindly review and suggest.

Regards

Kamal

0 Timothy Hegarty over 3 years ago in reply to Kamaljit Kaur

TI__Guru 74302 points

Hi Kamal,

2.1MHz is way too high for this current level. Try 250kHz.

Keep the loss in each FET under 1.5W if possible and use 5 x 6mm footprint, not 3 x 3mm. See recommended FETs in the LM25148 datasheet (Infineon 40V OptiMOS6 family).

Note we have the LM5143 and LM25143 released now - these are commercial versions of the LM5143-Q1 automotive controller.

Regards,

Tim

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LM5143-Q1: LM5143-Q1