Part Number: LM3478 Hi Team,
The POS boost uses the LM3478 in conjunction with the customer-supplied I/O board (24V). An abnormal sound is produced at 0A, which is currently believed to be caused by not entering CCM.
During customer recent experiments…
Part Number: LM3478 Other Parts Discussed in Thread: LM3488 , LM5155 , LM5156 Hello,
Can I please get the difference between LM3478 and LM3488?
Also I am planning to use such controller as low side buck as shown in below pic. Are there any newer ones apart…
Part Number: LM3478 Hi expert,
When the customer uses the LM3478, the FA pin is pulled up to 12V through a resistor, but the LM3478 can still work normally. Is this application feasible? What risks will exist? thanks.
Part Number: LM3478 In the datasheet of the LM3478 I have read that the gate of the mosfet must be connected to the DR pin. But my question is if an external driver could be added, which would receive the PWM signal from the DR pin, in order to have a…
Part Number: LM3478
Hi e2e:
We have tested the voltage of FB pin. The peak value is -0.57V, less than -0.4V limited in the datsheet. And the over voltage time lasted for 3ms.
Could you please help to judge the risk? Which part of the device might be damaged…
Part Number: LM3478 I have designed a boost DC-DC convertor circuit using LM3478. The input voltage is 12V,13A (via AC-DC Power Supply) and the output voltage 24V,5A. Circuit has been worked fine for few days and suddenly the convertor is not working…
Part Number: LM3478 Other Parts Discussed in Thread: LM5022 , , POWERSTAGE-DESIGNER I asked Webbench for a SEPIC converter using the LM5022 or LM3478 20V-60V input 48V @ 1A output, and it says it can't, but it doesn't say WHY it can't.
I would…
Hello Daniel,
I have not seen an update from you for the last 25 days, so I assume the questions are answered and the issue is solved. I close this thread now. If there is still something open, please reply and the thread will get opened again. If you have…
Part Number: LM3478 Other Parts Discussed in Thread: LM5155 , LM5158
There are few points I couldn't understand about current sense functionality in LM3478.
The option to set current limit by choosing Rsn works like if voltage across Rsn (which is…