Part Number: LM27402 Other Parts Discussed in Thread: CSD86350Q5D , LM27403EVM-POL600 , TPS53632 , LM27403 Tool/software: I am working on a POL module that can do 12V-1V (and other standard POL output voltages). I like the design in LM27403EVM-POL600 and…
Part Number: LM27403EVM Other Parts Discussed in Thread: LM27403 , Hello I have a question about the LM27403. Verification is performed using LM27403EVM. Specifications: Vin = 3V-20V Vout = 1.2V (no EVM setting change) For EVM input: 7-20V, I am thinking to…
The 1us/div oscilloscope plot does not have the periodicity I am expecting.
Do you have an oscilloscope plot with the SW and Vout on the same plot?
The above measured bode plot implies stability with 70 degrees phase margin.
I measured the LM27403EVM…
Part Number: LM27403 Hello,
I am experiencing some on-time jitter on the switching-node output of my LM27403 circuit. I can provide all component values if needed, however I have observed the same node on the LM27403EVM and the percentage of jitter measured…
Here is a photo. The board I have is the LM27403EVM-POL600. Since this is a mature device, why does TI provide tools that don't work? And, why doesn't TI clean up conflicting design information?
Thanks,
Dear John,
The Cvdd is closed to IC ,As shown below. C6 is the Cvdd.
And, my schematic is the same as the LM27403EVM .
The waveform show as below
CH1: Vsw CH2:Vdd
CH3: Vin CH4:Vo
Is there any problem with the waveform.
Because it's working norm…
Other Parts Discussed in Thread: LM27403 , LM27403EVM-POL600 Hi guys,
I design LM27403 Module according to LM27403EVM-POL600 User's Guide but my board consume 100mA current while no load connected to the output and it causes switching Inductor become warm…
Other Parts Discussed in Thread: LM27403 , LM27403EVM-POL600 Hi guys,
I design a board With LM27403 Switching according to its user's guide. my Design is completely match with LM27403EVM-POL600 but my pcb specially inductor become very hot and my output…
Other Parts Discussed in Thread: LM27403 I've got a power supply design, designed almost entirely using Webbench. The DC input voltage is between 15 and 20V, and I need to generate a variety of voltages for my circuit. Webbench proposed stepping the…
I was having the same problem This is what I assembled
It only got up to 100mv under no load but it was stable. When I added a 0.1ohm load it didn't regulate at all.
here is the Design tool exel file 12-01-2015assembly.xlsx
