All Questions
Tagged with dc-dc-converter switching-regulator
82
questions
2
votes
0
answers
109
views
SiC461 regulators unpredictably dying under load
I am having problems with a design using SiC461 regulators.
I attached a snippet of the relevant schematic file. The problem I am facing is that under load (powering an LED strip with peak current of ...
2
votes
0
answers
95
views
Buck Converter Current Mode Control Simulation
I have downloaded LTspice PWM switch from christophe basso website http://powersimtof.com/Spice.htm file name PWM-CM2-MD2 by Mark Dimattina
I am doing 5.1V converter based on LTC3890 IC so I tried to ...
- 119
0
votes
2
answers
221
views
MT3608 is not switching for particular input voltage
I have PCB printed a board that feeds a 12V led strip from either a Li-ion battery or a 5V USB. With no load, the output is 12V, as it should. As soon as I connect the led strip (80mA at 12V), the ...
- 127
2
votes
1
answer
168
views
Switched capacitor DC-DC converter [duplicate]
Switched capacitor DC-DC converters are often used for low power applications (low output current) while inductor based DC-DC converters are preferred for high power applications.
I've come across ...
- 61
0
votes
0
answers
70
views
Design procedure for switched capacitor dc-dc converter
I am looking for some references to design a switched capacitor dc-dc converter, however I could hardly find any reference online.
I am aware that the design method depends on the actual topology of ...
- 61
6
votes
1
answer
913
views
Constant Voltage Spikes in a DC-DC Switching Regulator
I've been developing a low-voltage ripple dc-dc converter (36V to 5V) based on the LMR16030PDDAR to power a sensitive analog video transmitter. When a load is connected to the output, I get a really ...
0
votes
5
answers
397
views
Shielding Buck Converter
I have a simple question, and I want to ensure that nothing unexpected happens. I'm currently working on a Raspberry Pi-based robot project with a Pi camera, and I plan to power it with a battery, ...
- 53
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
0
votes
1
answer
39
views
Switching regulator Design
I am designing a switching buck converter from 7.5V to 5V using the AP62200TWU-7 converter.
This converter operates at fSW=750kHz Switching Frequency.
The required output current is around 0.5A.
using ...
- 41
0
votes
0
answers
40
views
Are there any problems to expect when you add a MOSFET to a DC/DC converter to add PWM modulation for LED brightness regulation?
I need to power LEDs from a solar powered setup with a 12V battery, around 25W of power.
I want to be able to dim the LEDs using a microcontroller.
I was not able to find a reasonably priced DC/DC ...
- 11
0
votes
0
answers
78
views
Can the MP9488 circuit be operated at 333mA output current?
I am looking to use the MP9488 as a buck Switching Regulator with a voltage output of 12V and output current of 333mA. In the application note it has an output current of 300mA.
As far as I understand ...
0
votes
3
answers
64
views
Current and voltage value before inductor pin in buck converter
In buck converter we know that pure DC current will be after inductor pin. But what will be the current/voltage value before it.
Let’s take an example, the buck converter circuit with 12 V input to 3....
- 543
1
vote
1
answer
43
views
MC34063 output voltage rises with current draw
In my current project I implemented two MC34063 switching converters to provide a 3.3V and a 4V rail. Testing the converter circuitry I found some odd behaviour.
Unloaded I get a solid 4.0V, but when ...
0
votes
4
answers
159
views
Why are switching DC/DC regulators so constrained on input voltage? How can I manage drops from higher voltages?
I'm looking to generate a stable 5 V and/or 12 V output from a DC input that could be up to 120 V. Inspecting the Farnell range at least, with no filters, the greatest DC input voltage is 75 V. How ...
- 585
0
votes
2
answers
88
views
Reduce DC voltage via simple passives BUT as input to DC-DC converter
I have a bunch of cheap buck (I think) converters that do 6-20V input and 5V output; and I want to use one powered by a 24V PSU (this is for a 3D printer).
The current draw of the 5V system should be ...
- 101