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Part Number: LM51551-Q1 Other Parts Discussed in Thread: LM51551 , LM3481 , LM5155 Tool/software: Hi team,
We have just selected a PWM controller, LM51551. Regarding the bias pin, since our bus DC voltage is 100V higher at most, it cannot be connected directly…
Part Number: LM51551-Q1 Other Parts Discussed in Thread: LM5155 Tool/software: Hi team,
Does the OCP monitor CS pin continuously in whole cycle, or just only during the on-time of the power MOSFET?
Thanks,
Wonder
Part Number: LM51551-Q1 Tool/software: Dears:
Customer found LM51551-Q1 SW drop after 6ms start up with no loading, it has two drop , around 160uS,
add some loading this abnormal drop is removed.
Could you please help check if this drop is normal behavior…
Part Number: LM51551-Q1 Other Parts Discussed in Thread: LM51551 Tool/software:
hello
i have one question about the LM51551,I applied this chip to perform sepic topology control
Is there any problem with me controlling the UVLO pin of the chip through…
Hi Sidharth,
Thanks for reaching out.
Sidharth Gupta said: Is LM5155/LM5156 suitable as a suitable PWM controller IC for for non-isolated, non-synchronous, single MOSFET DC/DC boost converter.
Yes, in general, LM5155 is made for applications like this. …
Part Number: LM51551-Q1 Tool/software: hello
i checked the LM51551-Q1 DATASHHET ,the following PICTURE
As we can see from the following figure, when VCC exceeds 4.5V, the voltage of SS pin starts to rise，but refer to the Red Arrow Position,
When SS rises…
Part Number: LM51551-Q1 Other Parts Discussed in Thread: LM51551
Tool/software:
We are using LM51551-Q1 chip, Topology: BOOST, output voltage: 46V;
The picture is the schematic diagram and the waveform of startup time. The first picture VOUT output…
Part Number: LM51551-Q1 Tool/software: Hello,
I have made a power supply using LM51551-Q1 with Flyback configuration. I am simulating the circuit in TINA TI. The issue is IC is not producing any output. Don't know whether its a TINA TI simulator issue…
Part Number: LM51551-Q1 Other Parts Discussed in Thread: LM5155 Tool/software: Hello Sir or Madam
We downloaded the below LM5155's Spice file.
When we run Spice with this file, we saw an error pop up. Pls see the below screenshot. We want to know…
