Iomax is still confused. 13page Ioutmax=(Ilimt+Isc)/2, figure 9-4. Maximum Output Current vs Ambient Temperature says 1A. Is it different from the Iomax in the above and the L formula Iomax?
And where is the current limit ~3A data sheet? I can't find it…
Part Number: LM5146 Other Parts Discussed in Thread: LM5164 , LM5012 , LMR38010 , LM5013 Copy of LM5146-Q1 Quickstart Tool r2 - 48Vin 12Vout 8A 400kHz.xlsm
Please ask if there is any problem with the parameters of this peripheral circuit. Thanks.
Hi David,
From your previous part, it looks like you were working with an automotive application, so in this case I recommend using only the parts with the -Q1 suffix. In either case, I would more likely recommend things like the LMR36015-Q1 and LMR38010…
Hi Andras,
Basically as load decreases, inductor current begins to exhibit DCM behavior. This means that as the load decreases, the duty cycle also decreases accordingly. Eventually, the peak current of the inductor will be below minimum peak current…
Hi Archie,
There are two main struggles. The first would be that the LMR51450 does not have an sync pin. I would recommend something like the LMR38010 , which does have an external sync function. That way, you can generate some kind of clock that allows…
Hi Richard,
Thank you for your reply.
Actually, the customer is evaluating the circuit by mounting it on a prototype board, and it may lead to unstable operation.
As you mentioned, Absolute Maximum Rating of Vsw is Vin, it is a risk.
So, I introduced…
Hi Sivamani,
We have a dual-output controller - the LM5143 - but it's rated to 65V operating, 70V abs max.
12V/1A is ideal with a converter (integrated FETs). Consider the LMR38010 80V/1A converter (also available in 2A).
24V/6A requires a controller…
Hello,
Thank you for your answer. What about longevities for LMR38010 and LMR36006-Q1? Which one should be preferred?
Thank you in advance.
Best Regards.
Hi Farhan
I checked the Vin waveform and it is lower than 6V during the dip, which is UVLO threshold of LM5163. Can you check what the Vinmin is?
Would you considering replacing LM5163 as LMR38010? Which is 4.2V to 80V,1A device, and is pin to pin with…
