All Questions
16
questions
1
vote
1
answer
38
views
How to choose the right type and values of capacitors for LM5143A-Q1 output?
While learning and trying to make my first buck converter using the LM5143A-Q1 (datasheet link) from TI, I calculated the required capacitance at the output for the IC to be able to output 31A, which ...
- 411
2
votes
1
answer
132
views
Output Capacitor Design for a Multiphase Buck Converter
According to this application note from Texas Instruments, in the design of the output filter for a multiphase buck converter there are basically two ways of choosing the output capacitor. The first ...
4
votes
1
answer
192
views
Questions regarding this power module
I'm looking at this power IC module.
I assume it's a buck converter. In that case, on page 16 of the datasheet, Equation 4.1, there's this formula: Rvout = 8.2 kΩ * TRIM. If TRIM is 5, then what would ...
user220456
1
vote
2
answers
190
views
Selecting capacitor and inductor for adjustable buck converter
I'm trying to understand how to choose the right inductor for a buck converter that can produce different output voltages.
When using an LM2596 I can add a potentiometer into feedback loop to produce ...
0
votes
1
answer
486
views
Buck Converter Voltage Ripple at Output
I just made a 32V to 16V 2 Amps buck converter with a 10mH inductor, I'm having an issue with the voltage ripple output. Too many spikes, and it's generally not consistent. Electrolytic and Film ...
0
votes
2
answers
236
views
What is the formula or any method to calculate the value of the output capacitor and inductor in a buck converter
I have using a buck converter whose output is 5V and 1A.
Can someone tell me whether these is any formula to calculate the value of the output capacitor? Like, without involving the switching ...
user220456
3
votes
4
answers
3k
views
Output capacitors of DC-DC converters
I am trying to understand what type of output capacitor is a better option.
Suppose I require a 10uF output capacitor at the output of the buck converter, which one should I pick - aluminum ...
user220456
0
votes
3
answers
873
views
Role of the output capacitor in buck converter in terms of frequency
I am using this DC-DC buck converter - buck converter.
Schematics :
Buck Converter Specifications :
Input Voltage - 18V to 32V
Switching Frequency - 300kHz
Output Voltage 9V
Load Current - 0mA to ...
user220456
1
vote
1
answer
664
views
input capacitor for buck converter
To calculate the input capacitor for buck converter, I follow TI Application Report SLTA055–FEBRUARY 2006 "Input and Output Capacitor Selection".
It says to determine the input capacitor &...
- 113
0
votes
1
answer
85
views
DC current at input and ouput capacitance of buck
I'm working on this website
http://www.onmyphd.com/?p=voltage.regulators.buck.step.down.converter
Could someone help me to understand those two statements:
1) "since the DC current of the inductor ...
- 11
1
vote
1
answer
438
views
Input and output oapacitor for PoE + DCDC controller
I am trying to design a PoE solution using MP8007. It has an integrated PD interface and isolated/non-isolated DC-DC Converter.
The DC-DC converter uses fixed peak current and variable frequency ...
- 962
2
votes
3
answers
3k
views
Why is my buck converter emitting smoke and fire?
I am powering my router from a 24 V battery, but the power requirement of router is 12 V/1 A, so I am using an LM2596 buck converter.
The specification for this buck converter is as follows:
Input ...
- 123
1
vote
1
answer
1k
views
DC-DC converter in "parallel"
I'm designing a system that needs two converters. The Vin input voltage is approximately 14.5V. I need to lower the Vin voltage to 12V and also to 5V. I chose two LM2576-5 (5V) and LM2596-12 (12V) ...
- 583
1
vote
1
answer
248
views
Capacitor Selection for TPS56221 [closed]
I'm using the TPS56221 buck converter.
500 kHz switching frequency
12V in 5V out,
16A max, 14A load step
I've found out all the values I need, the problem I'm having is finding suitable capacitors....
- 1,197
1
vote
3
answers
2k
views
Buck converter based switching power supply?
simulate this circuit – Schematic created using CircuitLab
I have designed this circuit based on a buck converter. I'm just having trouble finding out which values to plug in. I.E. C1, L1, and ...
- 717