If equal or similar sync technology is used in LM5021 as in some other devices such as LM5088 then you should take into account the following notice: "The free-running frequency should be set nominally 15% below the external clock frequency and the pulse…
Part Number: LM5088MH-1EVAL Hello,
We are running the LM5088-1 EVM with a 36 to 44 input and a 26V output at 2A. From webench these parameters results in only a 177.44mW of power dissipation, but the part temperature is rising to 43.2 degrees C. The…
Hello Sergey,
The LM46002 design cannot be created under the specs of Vin=40 to 56V, Vout=3.3V, Iout=2A and fsw=1.5MHz because of the high junction temperature.
The maximum switching frequency is calculated based on the IC losses and some constrainsts…
Here is what I done so far if someone will need the same thing in the future:
Two scenarios was tested (in both case Vin=56VDC): with R3=4.7K when Vboot=15.8V (no load, measured between TP2 and TP3) and R3=3.3K when Vboot=12.3V. Another document that…
Part Number: LM5085-Q1 Other Parts Discussed in Thread: LM5088-Q1 , LM5085 Hi,
I'd like to know if the automotive rated LM5085-Q1 has built in-load dump protection and fulfills the requirements set for ISO7637-2:2004[1] load dump pulse.
Taking for…
I found that LM5118 could be a nice candidate for my design. There is a two other controllers: LM5116 and LM5088. Currently I have an real issue WEBENCH to possibly explore a little bit more LM5118. Also have problem with importing its PSPICE model in…
I finally had a chance to test sync signal isolation. Here is a schematic with synchronized LM5574 (master) and LM5088-2 on one PCB and LM5574 on another isolated PCB.
The following screenshot presents a case when PCBs are not in sync:
And below…
Other Parts Discussed in Thread: LM5088 , LM5116 Hi i am bulding solar regulator with lm5116 (previous version with lm5088 works well, but i dont want to cool diode) . First i've tested this lm5116 layout with 1 Ohm load at 6V, and converter oscillated…
