All Questions
Tagged with buck voltage-regulator
141
questions
0
votes
0
answers
36
views
LM5013 buck regulator won't have high duty cycles
I have made a PCB with the LM5013 buck regulator, but can't seem to get the output voltage high enough. The goal is to be able to adjust the output voltage using the LOAD_REGULATE pin, for a variable ...
- 21
15
votes
3
answers
2k
views
Why did my DC/DC Buck Circuit fail?
I'm in the process of debugging a PCB I made. On this board, a 24V input feeds through a DC/DC buck circuit (based around the TI TPS54202DDC) to output 11V, then an LDO to output 9V (to ensure a very ...
- 671
1
vote
1
answer
65
views
AOZ2261 buck switching regulator doesn't give reasonable output
I am designing a brushed motor driver unit that controlled with a ln STM32F410 microcontroller and a DRV8243S H-bridge driver. I am using an AOZ2261NQI-12 to supply the H-bridge driver.
The IC is ...
1
vote
1
answer
125
views
Burning sound from the PSU
I am trying to make a bench power supply from an old 350W PC PSU
that provides 4 lines
3.3V 8A
5V 9A
12V 11A
-12V 1.5A
Here is the connections diagram:
I used this step down module to be able the ...
1
vote
1
answer
85
views
Is it possible to use BQ25629 as both a lipo battery charger and a stable output regulator?
I am a bit confused looking at the datasheet for the TI BQ25629 with regards to the SYS output voltage. Essentially, I have a 3.7 nominal voltage 290 mAh lipo battery that needs to provide around 100 ...
- 217
0
votes
0
answers
173
views
DC/DC split rail converter like TI's Fly-Buck™ coupled inductor topology but with a non-inverting buck converter
Introduction
First of all, I hope you can read this through. It's rather long!
I was trying to design a DC/DC converter for a Class-D amplifier that requires a 48V input and also an auxiliary 12V ...
- 33
0
votes
0
answers
20
views
Why is there an output ripple on my LM2576? [duplicate]
I built a buck converter using the LM2576HVT-15/NOPB. I built it exactly like the recommended schematic:
The diode I am using is a 1N5822 and the inductor is a 470uH inductor with a 100uF ...
- 1,062
2
votes
1
answer
113
views
How to choose the right inductor for buck converter with LM5143A-Q1? (from TI)
While working on my first voltage regulator circuit I got stuck at calculating the inductor value... The IC is LM5143A-Q1 from Texas Instruments, and according to the datasheet, the formulas for ...
- 411
0
votes
2
answers
245
views
DC to DC voltage step down converter on PCB
I'm a beginner and I'm designing a PCB where I want to power my PCB from a 12-24 V DC car charger.
On PCB itself, I want to use 5 V and 3.3 V for different components, so for this purpose I'm trying ...
- 99
1
vote
0
answers
43
views
Switching Voltage Regulator not Outputting Correct Voltage
I am working with a LM2576T-ADJ that is taking as an input voltage a 2 cell Li-Po battery that in my application won't decrease below 8V and should output a voltage of approximately 6V to power a pair ...
- 11
5
votes
1
answer
544
views
Voltage regulator LMR33630 doesn't work, asking for circuit review
I've put LMR33630ADDAR voltage regulator into a PCB with this circuit:
It's slightly different from the example from datasheet:
PG isn't connected, CFF capacitor absent and feedback resistors are ...
- 271
0
votes
1
answer
44
views
Full form of LEB in VIPer01 block diagram
How does LEB function and how does it operate in this block diagram?
0
votes
1
answer
93
views
Buck converter (MAX5035D) regulation problem
I didn´t expect to be having issues with a buck converter, but here I am.
My design goal is a simple 15-60 V to 10 V buck converter. I settled with the following schmematic:
I designed a 2-layer ...
- 1
1
vote
0
answers
37
views
Control scheme to regulate Vin using a Buck regulator
I am trying to create a control scheme that allows a buck regulator to regulate its input voltage instead of its output voltage. I'm trying to make an efficient shunting regulator. My current approach ...
- 11
4
votes
2
answers
509
views
Buck converter based regulator
Buck converters are extensively used in switching voltage regulator.
I think it's essential for a buck converter to be closed loop to behave as a voltage regulator, otherwise for open loop it's just a ...
- 339