Part Number: LM3481SEPICEVAL Other Parts Discussed in Thread: LM3481 , LM5155 , LM5156 Hi,
I am using the AN-2094 SEPIC evaluation as a reference , But i need different soft start requirement. I am attaching the output voltage soft start waveforms from…
Part Number: LM3481SEPICEVAL Hi,
My customer try to evaluate the LM3481SEPICEVAL on Vout=12V.
According to the user's guide, Input voltage is restricted 18V on Vout=12V condition as below;
Why is input voltage restricted to 18V?
I think that…
Part Number: LM3481SEPICEVAL Other Parts Discussed in Thread: LM3481-Q1 , LMP8646 Hello everyone,
We are using the LM3481-Q1 in SEPIC topology in our designs.
Vin=7-24V Vout = 12V Iout=0.75A - set by Rsen to 0.063 OHM f=1Mhz
I want to ask about…
Part Number: LM3481SEPICEVAL
Hello,
We have a copy of the LM3481SEPICEVAL board and noticed a few discrepancies between the component values in the user guide and what is actually populated on the board.
Inductor:
Schematic: Cooper
BOM: Cooper…
Part Number: LM3481SEPICEVAL Howdy,
Is there any reason you could think of where putting a Cff would cause problems on this EVM? I have an engineer trying to improve the transient response of the EVM by adding a Cff and, in their own words, it is causing…
Hi Jass,
The SEPIC topology is not specifically listed in the control scheme, but I would assume a CMC Flyback would be the most accurate replacement. (I will need to check this with a compensation expert) For alternative calculation guides, we have…
Part Number: LM3481 Hi
1.
Is it possible to satisfy following requirement using LM34381 SEPIC operation?
Input:3V-4.2V
Output:3V-8.5V
Output current:1.3A
2.
Is it possible to modify LM3481SEPICEVAL to satisfy our requirement? …
Hello,
I do not have figures for this design at the moment but it should have similar load regulation to the LM3481 SEPIC evaluation module (LM3481SEPICEVAL) which would make the Vout regulation comply with the 0.5V requirement.
Best Regards,
…
Other Parts Discussed in Thread: LM3481SEPICEVAL I bought an evaluation board "SV600184-001 LM3481SEPICEVAL/NOPB", and I did tests with the cispr22 and the result was bad, 80MHZ, I did a PCB with the same mode and did the same problem with EMI, what can…
Other Parts Discussed in Thread: LM3481SEPICEVAL Hello,
Vcc and DR pin absolute maximum ratings are 6V. However, Vcc and DR pins will be 6.2~6.3V at the condition of the following.
This voltage is larger than absolute maximum ratings. Are there…
