Part Number: LM25088 Dear Sir,
My customer has some issue for LM25088.
They changed PCB layout but output voltage is drop when it has output load. good working before layout.
could you please review schematic and layout.
condition
VIn: 15V…
Part Number: LM25088 Hi
We design a negative circuit using LM25088. The spec is Vin=24V, Vout= -10 to -18V @1.5A.
When the output is below -11V(-11V, -12V, -15V, -18V) with no load, the MOSFET AO4354 is very hot. the temperature is above 80℃. when…
Hello David,
I suspect you are hitting current limit due to noise. Suggest following the layout guidelines herein to remedy if you have not done so?
LM5085 Floor plan.tif
Hope this helps?
David.
Part Number: LM25088 Tool/software: WEBENCH® Design Tools I used WEBENCH on 08 March 2018 for a non-isolated dc-dc converter with the following specs:
VinMin = 21.6V
VinMax = 26.4V
Vout = 19V
Iout = 6.316A
Temp = 60 degC
The solution I…
Hi Roger,
I forwarded your enquiry to the product expert. We will need to check if the LM25088 is fully enabled for inverting buck-boost operation in WEBENCH. Should be no problem for the IC.
Regards,
Tim
The maximum frequency of operation is specified as 1MHz on the datasheet. WEBENCH limits the maximum frequency of operation to 525kHz. Why is this limit lower than the datasheet specification?
Other Parts Discussed in Thread: LM25088-Q1 Hi Folks,
We are designing a product where it requires crank support feature. Basically this product will be use in automotive. We selected LM25088-Q1 IC DC-DC converter IC automotive part. While going through…
Hi Xinming,
LM25088 is Buck controller. So I would suggest you to repost it in the non-isolated DC/DC forum. There are more experts on the part.
e2e.ti.com/.../non-isolated_dcdc
Br
