Hello!
We are working with LM20333, and we are experimenting some problems with the input voltage range. Basically, our design is exactly the same suggested by the webench of national.com (VOUT=5V) and works fine between 9 to 17.5V of VIN, but the…
I just tried again from the product folder page ( www.ti.com/.../lm43602) and it came up with a 323KHz design from there. You cannot set sync Fsw from there though.
For the "Show why other parts not found" explanation, from the regular flow (ti.com…
I have the LM20343 that not have the Spice Model. You have advised me to use LM20333 to perform simulations but LM20333 always operates at 200 KHz although fits a square wave signal (0V Low - High 2V) with frequency of 1MHz on the SYNC pin.
How can…
Hi Ryuji-san, well, you can slightly reduce the peaks in the back-gate-time as you are plan to use schottky's.
On the other hand you add capacitance to the SW Nodes, which does not help you. The LM20333 has a switching frequency of 250kHz to 1.5MHz…
Hello Pavel,
The opportunity for noise induced operational errors is high due to the long cables.
If your goal is to have it operating, running code, you may see errors.
If your goal is to simply have the system powered while you dose the radiation…
Hi,
We have noted that those spurious are generated mainly by the UCD7242 device that generates 0.95V (CVDDT1 rail 3 and CVDD1 rail 4). Reducing the frequency switching (from 751KHz to 300KHz) we have improved the EMC, but in order to pass the test…
webench_esim_1043377_132_2_108293959.pdf
I use paper click to attach file here. I hope it's oK.
This design diagram it's the same for all my DCDC converter with LM20144: different inductance and some res values... other DCDC run , this doesn't run…
Hi Amy,
I ran the 1V, 3.4A, 85C design on webench for smallest footprint (attached, and design sent to you in an email from Webench). The XAL5030 series came up as the preferred, and if you click on the "Select Alternate Part" there are dozens of other…
