All Questions
13
questions
0
votes
1
answer
117
views
AP63203 Buck not working
Recently I have been experimenting with the AP63203, and I just have not been able to get it to output 3.3V successfully. Currently, the way I have been testing it is using an SMT to TH adapter, which ...
- 1
0
votes
1
answer
86
views
Buck converter: Additional circuitry working not clear
Saw the below schematic of a buck converter, but not able to figure out the working of the marked section. It is shown Node 1 is at 16 V.
Looks like sensing the differential voltage across inductor, ...
- 3,032
2
votes
0
answers
95
views
Is it true that power supply design is difficult when input voltage range is wider?
During power supply (buck converter) testing, I had seen the lowest efficiency values corresponding to highest input voltage. I thought if the design meets this worst case scenario, it should be ok no ...
- 3,032
2
votes
1
answer
752
views
Practical vs. theoretical buck converter
I am currently looking at open loop buck converters. I am running it with the following:
Switching frequency (f) = 62500
Inductance (L) = 100e-6
Input voltage (Vi) = 5
Output current (Io) = 0.06
...
- 451
1
vote
0
answers
76
views
Buck boost converter inductor rating
I am designing a buck boost converter with a 12v output, and 50A current output.
The input range is 8v-14v from a supercapacitor. However based on the Texas Instrument buck boost design sheet Basic ...
- 11
0
votes
1
answer
56
views
How to measure correctly efficiency at high load with LT8646
i'm trying to measure efficiency of a LT Part LT8646 at high load with the attached schematic.
i'm using a dynamic load and a power supply to give 12V. I'm using a digital multimeter to read the ...
- 11
1
vote
2
answers
347
views
(THEORY QUESTION) If a diode was not placed in a buck convertor, when the switch is off would the load still be powered on?
(For Theoretical Purposes and Understanding assume the diode is not in the circuit)
I just have a bit of confusion regarding the buck convertor when the switch is off. Since an inductor cannot change ...
- 495
-1
votes
1
answer
255
views
Bootstrap cap value and how it relates to fsw and duty cycle?
I am designing a synchronous buck converter with mppt. I have a question about the bootstrap capacitor value. Knowing that the duty cycle and fsw are dependent on this value. What is the best approach ...
0
votes
2
answers
412
views
Buck Converter won't switch properly
I'm trying to use TI's LMR16006 Simple Switcher Buck Converter to regulate 48V down to 5V on my circuit.
I used TI's WebBench tool to calculate component values for their reference design, and had a ...
0
votes
0
answers
86
views
Power source with buck converter, load and supercap
I have the following circuit created in MATLAB Simulink:
I have a power source (Vfc,Rfc) on the left. Its operating point is set by using a buck converter (mosfet,diode,L,C1), which controls the ...
- 391
0
votes
2
answers
2k
views
Buck converters in parallel
The above problem was asked in GATE 2018 Electrical paper. I got the answer as 50. But I am confused if my answer is correct. The funny part is all top 3 coaching institutes has given 3 different ...
- 545
0
votes
2
answers
698
views
How do I increase 3A fixed output current of a buck converter? [closed]
Basically I am making a solar inverter without any battery or charge controller that will directly convert the dc output coming from solar panels (6 connected in parallel) into 220V AC.I am using ...
0
votes
1
answer
346
views
What drawbacks to bucking, then boosting the same current?
Are there any real negative drawbacks - outside of the double drop of efficiency - of DC-DC boosting a power line that was already DC-DC bucked?
I'm building a modular system, serially linked through ...
- 115