Here is the quickstart calculator file.
3531.LM(2)5145, LM5146 contorller design tool - revA1.xlsm
We already considered a derating of the output ceramic capacitors of -60%.
The CC loop is already very slow. If it gets too slow, the overcurrent…
Kygo,
You shouldn't need paralleled FETs for 10A. Take a look at the LM5145 and LM5146 EVM designs for example. These Vishay FETs are old - take a look at the latest from Onsemi at 80V.
Regards,
Tim
Part Number: LM5176 Other Parts Discussed in Thread: LM5146 , , LM5175
Hi team,
Since of LM5146 out of stock, I have several questions about LM5176:
Can LM5176 work as buck controllers? Just use two Mos?
Is LM5176 have any EMC improvement compared…
Hi Yu,
Take a look at the LM5146-Q1 EVM files here: https://www.ti.com/product/LM5146-Q1#design-development##design-tools-simulation . This is an 8A/400kHz design and has a better input capacitor placement at the FETs.
I'll go ahead and schedule…
Part Number: LM5148 Other Parts Discussed in Thread: LM5145 , , LM5149 Tool/software: Hi,
I have been digging around for some details about exactly how TIs family of synchronous buck controllers actually deal with the problem of start up when the output…
Part Number: LM5116 Other Parts Discussed in Thread: LM5576 , LM5005 , LM5146 , LM5145 Hello all,
We utilized WEBENCH to design the following power converter circuit for our design:
However, after attempting to model this circuit in PSpice for TI…
Hi Seiso,
It will be hard to predict efficiency accurately at such light load.
I recommend you test your specific case with an EVM.
LM5146-Q1-EVM12V or LM5145EVM-HD-20A
Note your WEBENCH designs have two different inductors.
Hope this helps…
HI Maynard,
I recommend using the LM25145 controller for this application. This is part of the LM5145 and LM5146-Q1 controller family.
The LM5145 EVM is 5V/20A/225kHz and the LM5146-Q1 EVM is 12V/8A/400kHz. More specifically, take a look at the…
Part Number: LM5088 Other Parts Discussed in Thread: LM5146-Q1 , LM5005 , LM5146 Tool/software: WEBENCH® Design Tools When I supply 53 volts to the board it works just fine. The LM5088 heats up to about 130 F nothing to crazy, but when I supply 75 V with…
