DESCRIPTION. The LD is a step down monolithic power switch- ing regulator with a minimum switch current limit of. A so it is able to deliver more than. L datasheet, L circuit, L data sheet: STMICROELECTRONICS – A SWITCH STEP DOWN SWITCHING REGULATOR,alldatasheet, datasheet, . L Datasheet, L PDF, L Data sheet, L manual, L pdf, L, datenblatt, Electronics L, alldatasheet, free, datasheet, Datasheets.
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I have not bothered to check the pin-out of all the parts. What is the point of D7, D8, D9, D10? Was it a “golden board” test or a real netlist based test? Thanks again for your invaluable dattasheet. Could it be over-shooting beyond the DC-DC’s maximum voltage? Anything less than netlist based electrical testing of the PCB and you are gambling. Sign up for a new account in our community. While the schematic looks reasonable, your real problem may be in the layout.
Have you cut a PCB or are you doing this on a breadboard?
L STMicroelectronics|PMIC – Voltage Regulators – DCDC Switching Regulators | WIN SOURCE
How good is your 12V? They are definitely NMASC, but that wasn’t a dumb thing to say it wouldn’t be the first time I’d done something like datashdet Same for diodes on the other 4 channels? Good point about the Apr 1, 3. Looking through the schematic, here are the observations: How are you preventing cross conduction on the bridge?
Up To 2.5A Step Down Switching Regulator
I am wondering why Here are some datasyeet of LD: Feel free to suggest some to leave out if you think they are redundant. The 12V input actually 12V? You have way too many unnecessary diodes in there.
But if the DC-DC fails to start up, what happens to the downstream circuits? Apr 5, 7. Posted April 24, Hey 55, Thanks for the advice, some great points in there as usual.
Testing out of circuit against a reference device shows they truly are dead. I used to use LD to produce voltage of 3. I am assuming that they are correct. I can change the distances hence, this ringing would have to be fixed by adding other components.
For all I know the problem is that you are using a 5V zener, but I have no way of knowing because all I see is “zener” p. I suspect you datasheeg either mistyped the part number or put down a distributor’s part number. The modules seem appropriate for your application. Apr 1, 2. Similar Threads opto isolated h bridge PCB design. After that, you can post your question and our members will help you out. The figures are same while the feedback resistance are different.
That would be the first place I would look.
datasneet The input is 24V DC. I have gotten REALLY busy due to some issues coming up out of nowhere at work and have not had a chance to post here or eat or sleep or Since you are driving this with another DC-DC, you are may be violating them. My philosophy has always been to go overboard with the protection in the PCB design then datasheeg later whether I want to populate those parts.
Saying all that, it is a fairly simple design and so far my manual inspection has found no reasons to be concerned. Apr 1, 5. If not, all bets are off. Apr 1, 1.
L59730 DATASHEET
My only other thought is that I’m over-loading the output of the Muratas which are only rated to 1W. How do you know that the PCB is manufactured correctly? I suppose I must be damaging the Murata’s though inadequate protection, although so far I haven’t been able to catch any suspicious spikes on the oscilloscope. By JessicaleApril 24, in Power Electronics. Ideally, the correct part number should be showing up on the schematic.