Part Number: LM25148 Hi, I designed a 2nd version of a board based on LM25148. In the 1st version, there was some issues that it wasn't supporting current more than 10A. Although, i got layout review at that time as well. Now, i need PCB layout review…
Part Number: LM25148 Hi, I have some questions regarding designing of LM25148
Is it necessary to have RC network across inductor and current sense resistor? The datasheet says that if need to measure current using inductor DCR current sensing then need…
Part Number: LM25148 Other Parts Discussed in Thread: LM5148
Hi, I design a board based on LM25148. I also got PCB review for it. Now i am testing the board. I noticed that as i increase the load current, the input voltage at converter start dropping drastically…
Part Number: LM25148
Hi Sir,
For the design condition: 12V-in, 12-Vout, 15A-Iout.
Does the LM25148 can support the duty cycle up to 99~100%?
If it can not, please advise the correct solution. Thanks!
Part Number: LM25148-Q1 Other Parts Discussed in Thread: LM25148 Hi team,
My customer wants to know if our device can support the application below.
Application:
12V to 3.3V
maximum output current 30A(1us) 20A(100us)
typical current 15A
Fs 400kHz
The load…
Part Number: LM25148-Q1 Hi Team,
I'd like to know how to calculate the minimum inductance value of a buck inductor.
I understand that Equation 9 in the data sheet is a recommended inductance value, and not the minimum value that will not cause subharmonic…
Hi Taki,
You are welcome.
Yes I would say Vin is very close to Vcc.
I don't have any data with an external load on Vcc.
I would just use this value as it should be very close to the actual and good for your calculation.
Part Number: LM25148-Q1 Hi,
Does RT of this device have a limitation in the minimum value?
If RT = 8k ohm, What is the switching frequency?
Best Regards, Taki
Part Number: LM25148 Other Parts Discussed in Thread: LM5148 I am developing a power converter based on the LM25148. I made a post here two weeks ago about stubborn instability. That thread found I had not followed all layout guidelines for the chip, so…