Hello,
Thanks for your message. Has this design already been check with the Excel Quick Start calculator ( https://www.ti.com/tool/LM5175QUICKSTART-CALC )? Could you please share the scope shots of the CS/CSG pin, SS pin and the two switch nodes? Do you…
Hello sakthi,
Did you follow the recommendation of external components based on the quickstart calculator? See here: https://www.ti.com/tool/LM5175QUICKSTART-CALC or here https://www.ti.com/lit/zip/snvc208
LM5176 is almost a drop in replacement of LM5175…
Part Number: LM5175-Q1 Other Parts Discussed in Thread: LM5175QUICKSTART-CALC Our customer consider to use LM5175-Q1.
Vin=6V to 18V
Vout=5V
Ioutmax=14A
Fsync=500kHz
Which tool you recommend they should use Webench or LM5175QUICKSTART-CALC to design…
Hi Max,
thank you for using the E2E forum.
Can you please fill out the Quick start calculation tool which can be found on the product page:
LM5175 data sheet, product information and support | TI.com
https://www.ti.com/tool/LM5175QUICKSTART-CALC
with…
Hi Sakthi,
Thanks for using the e2e forum. In general, the alternative parts suggested by webench can be used for the according application. However, I would always recommend to double check these parts with a look into the datasheet to see if all values…
Part Number: LM5175QUICKSTART-CALC Tool/software: WEBENCH® Design Tools Hi,
one of our customer has considered LM5175QPWPTQ1 for below DC-DC LED drivers:
1. 12V Project: I/P Voltage 9-16V, O/P Voltage 8.5V, O/P Current 1.2A - 1.8A
2. 24V Project: I/P …
Hi Max,
Thank you for your reply, here is what I have got so far:
- The Rs value seems too large as your current limit is too low and it might trigger during the normal operation, you can double check this using the quickstart calculator for this device…
Hi David,
thank you for using the E2E forum.
I also agree this jitter looks too high.
If your output voltage is stable, can you please check if you have used the right slope compensation.
A good tool for checking this is the
LM5175QUICKSTART-CALC — LM5175…
Hi Vasu,
Some comments to the schematic:
Rsense is really small - is there a reason for that?
Slope capacitance is too big
Phase Margin is also very low.
Please use the quickstart calculator (found on the product page) - to check the design and adjust…
Hi Brigitte,
I have been using LM5175QUICKSTART-CALC for the 18V/12A configuration and what do modify on the LVM5175EVMHP schematics and below are the results, if you could confirm those values
- Rsense=6.1mohms 1% 6W - Cin = 42uF 0V, Cout = 50uF 25V
…