Part Number: LM5143 Hi,
We are doing a single output dual buck with lm5143
Its 17-32vin, 13v5 out 30A out and 450kHz
https://www.ti.com/tool/LM5143DESIGN-CALC
...The calculator is calling for a 7.1mR sense resistor...this is too high resistance and will…
Hello Takashi,
please use the LM5143 Design calculator and input your spec requirements. the design calculator will make component value suggestions based off of your inputs.
LM5143DESIGN-CALC Calculation tool | TI.com
Hope this helps,
David.
Hello Yx,
please use the design calculator and it will recommend the inductor value for you. Yes, when choosing an inductor for a buck, make sure ripple is 30-50% of IOUT.
LM5143DESIGN-CALC Calculation tool | TI.com
Hope this helps,
David.
Hello Yuxi,
The details for selecting the inductor value are given in the datasheet, and this must be followed. not sure how the customer calculated 2.2uH, but its not based on an arbitrary 20% of IOUT. They can also cross check recommendation in the…
Part Number: LM5143DESIGN-CALC Other Parts Discussed in Thread: LM5143 Hello Team,
Can i get the password to unlock the LM5143 Design Calculator. We would like to access each individual cell so that a macro can be written to manipulate the cells from…
Hello Shwetha,
You did not mention switch frequency. would be very helpful to fill out the calculator spreadsheet to understand your design in more detail.
please find link to calculator below.
LM5143DESIGN-CALC Calculation tool | TI.com
Thanks
David…
Hello Tejendra,
Please can you post a clearer picture of your schematic and the BOM also please can you fill out the calculator spreadsheet of the specification your power converter is designed to, will help us narrow down potential cause.
Thanks.
…
Hello Harish,
The 22A high, will need to estimate the losses. please use the design calculator spreadsheet and enter in the parameter for your requirements populating the MOSFET section. The MOSFETs will be the hottest devices. There in the calculator…
Tejandra,
OK. Did you change the switching frequency, inductor and other capacitors?
Did you check your design with the quickstart calculator to estimate stability? (Phase margin > 45 degrees)
https://www.ti.com/tool/LM5143DESIGN-CALC
Please be sure…
Hi Figo,
Please attach a quickstart calculator for this design:
https://www.ti.com/tool/LM5143DESIGN-CALC
This is important for us to understand your required specifications.
-Orlando
