Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: LM25085-Q1 Hi, I have a question about the switching frequency of LM25085-Q1,
LM25085-Q encounters the phenomenon that the frequency cannot be adjusted by changing Rt during use. The maximum input range is 11-16V, and the output range is…
Part Number: LM25085-Q1 Dear ,
i use LM25085-Q1 to build one DC-DC , 15V,18-25V input, and when output current larger than one current( 2A for example), the drv will keep low for hundred us, and FB pin thus abnormal cause of the ripple injected.
drv,…
Part Number: LM25085-Q1 Other Parts Discussed in Thread: LM25085 , LM25141-Q1 , LM5146-Q1 Dear sIR/Mam,
i used LM28085-Q1 to build one DC-DC from 18V-25V to 15V/3.5A, but find the output voltage will go rise with the rise of Vin, can not be stable.
i checked…
Part Number: LM25085-Q1 Other Parts Discussed in Thread: LM25085 I've implemented the suggestions for avoiding failures (i.e. a shottky diode from Vcc to GND.
nevertheless I've got failures again switching on and off and on again. The AC/DC converter…
Part Number: LM25085-Q1 Hello,
I'm seriously thinking of using LM25085-Q1 for a 14.5V, 1A CC/CV battery charger (current limiter). SNVA486 approach seems to be a plausible option. I'd like to know some guideline how the peak current limit threshold should…
Part Number: LM5085-Q1 Other Parts Discussed in Thread: LM25085 , LM5085 These two parts seem to be identical besides the VIN spec and the odd optional but also required D2 on LM5085. If my VIN is less than 42V is LM25085 the better option?
Part Number: LM25085-Q1 Other Parts Discussed in Thread: LM25085 , LM5085 Hi everyone
We develop a board with a DC/DC converter based on LM25085
This board is powered by a 24V
Sometimes (1/100), during power on or power off operation, the LM25085 become…
Hi Ignacio,
Can you fill out this excel spreadsheet with your design parameters? In the meantime I will continue to look at your schematic and scope shots.
Regards,
Henry 7750.LM(2)5085_Quick_Start.xls
Hi Junghyun,
Please fill out this excel spreadsheet with your design parameters. It will help me get a better idea on the issue.
Regards,
Henry
2451.LM(2)5085_Quick_Start.xls
Hi Jimmy.
Yes, initially I was only concerned about the switching frequency at CCM but then checking the DCM we saw that we have several pulses instead only one.
With the following Type 3 ripple injection in next image, we are having in CCM a VSW stable…
