Part Number: LMR33640 I downloaded LMR33640D reference design and tried IBB simulation. But the result was different from the attached image. (VOUT was ramped up, not ramped down)
Do you know why?
Hi Ben,
I tested the LMR33640 +3.3V and -3.3V outputs circuits using the TI evaluation board (LMR33640ADDAEVM) and everything worked.
The conclusion is that our tests, using a bread board instead of a PCB, created problems when a load was connected.
…
Part Number: LMR33640 Other Parts Discussed in Thread: LMZ14203 Hello,
I am using LMR33640 to generate a few positive voltages and LMZ14203 to generate a negative voltage, recommended by WEBENCH.
I'd like to know if is possible to use LMR33640 to generate…
Part Number: LMR33640 Hello,
we use the LMR33640ADDAR to generate from 24V DC our used voltage of 3.3V DC.
We use this chip with the layout of the data sheet but now we have two times that all our chips which where connected to this power-chip are damaged…
Part Number: LMR33640 Other Parts Discussed in Thread: LMR33630
Hi Ti,
Pleaase help review below schematics, one LMR33640ADDAR output +5V/4A(3A is OK) and the other LMR33640ADDAR is as inverting buck-boot to generate -5A/2A from 12V/2A
Please you recommend…
Part Number: LMR33640
Hi,
I would like my math to be reviewed as a mistake is easily made.
My goal is to have a voltage DAC control the LMR33640 between +8V and +24V with an input voltage of 24.3V. The DAC can output between 0 and 2.048V and can sink…
Part Number: LMR33640
Hello.
About LMR33640, at page 21/44 of the datasheet is shown this equation.
My question is about the value of Cout. For example, if I am going to use 3x 22uF (22uF nominal) ceramic capacitors at output. Then at the equation should…
Part Number: LMR33640 Hi expert
could you please help review the schematic of LMR33640, it's used on the STB, the actually output is 12V 2A
the inductor parameter: I sat =10A,I_TEMP=6A, DCR=44mohm.
Part Number: LMR33610 Other Parts Discussed in Thread: LMR33620 , LMR33630 , LMR33640 , , LMR33630-Q1 HI~
EMI is mentioned in LMR33620/LMR33630 DATASHEET 1PAGE.
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Low EMI and low switching noise
Low…
Hi,
I have the question regarding PSpice simulation of 24V to 15V power supply design. Based on the project on WEBENCH:
I created the project in Pspice:
but with the simulation I am not able to achieve 15V output voltage. Can you recommend changes in…