All Questions
12
questions
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 ...
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 ...
- 1,072
0
votes
2
answers
252
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
0
votes
0
answers
57
views
High ripple in the output
We have chosen the MCP16311 buck converter for 4 V @ 1 A output.
design specifications as below.
Input voltage range: 5 to 20 V (source - USB type C mobile, charging adapter)
Output Voltage : 4 V
...
user220456
-2
votes
2
answers
1k
views
Average voltage in PWM?
I have a doubt regarding average PWM voltage. Let's take a buck convertor with Vin=10V, Vout=5V. With this we can determine the duty cycle of PWM needs to be 50%. Thus means the MOSFET of the buck is ...
- 543
0
votes
1
answer
125
views
battery voltage supply too high for electronics
I am driving brushless DC motors with an STM32 blue pill. My application includes said STM32 blue pill, L6234 motor drivers, 2 MPU5060 gyros and 2 AS5048a encoders.
I am using a 14.8V battery to feed ...
- 1
1
vote
1
answer
3k
views
Buck converter input voltage lower than the designed output voltage
I have this buck converter which is designed to produce an output voltage of 9V for an input range of 18V-36V.
The datasheet of the buck converter mentions that the minimum required input voltage is 4....
user220456
3
votes
2
answers
467
views
LM22678 Unstable output
I am building a voltage regulator with the LM22678-5.
I used TI WE-Bench designer to get the component values needed for the regulator:
The regulator outputs 5V when there is no load however it ...
- 63
1
vote
0
answers
170
views
What will be the output ripple current per capacitor buck regulator?
I have a existing buck regulator design. Converter part number: TPS54340Q1.
Input voltage = 5 V.
Output voltage = 3.3 V
RMS ripple current is calculated as = 108 mA. (Don't worry too much about ...
- 897
1
vote
2
answers
953
views
Input inductor ripple current of the buck regulator?
This is a buck converter circuit I am analyzing:
Here the input voltage is 5 V and output 3.3 V.
I am interested to calculate following parameter,
Input Inductor peak current
I know the basic ...
- 897
1
vote
3
answers
1k
views
Going from 72V to 5V with multiple switching regulators
I have a 72V battery which I want to step down to a 5V controller with limited power loss. The problem is that looking on the TI website the biggest range I could find for power regulators is the ...
- 629
1
vote
2
answers
678
views
How to control output voltage on a Buck Converter
I'm fairly new to electronics and I have copied the Buck Converter (LM2678) in the picture attached to convert 24V to 5V. After trying it I have actually converted 24V to 9V and my question is if I ...
- 117