All Questions
26
questions
1
vote
1
answer
73
views
Power dissipation formula
Is the below formula, present on page 26 of this buck converter correct to use?
Or should I use the formula mentioned in the 3 paragraph of this accepted answer?
- 1
0
votes
2
answers
86
views
OVP threshold for this converter
Here, this Boost converter, says that it can boost the input voltage from 2.5 V to 10 V.
My input is from a 7.4 V, 7.5 Ah battery. Output is 9 V. The maximum load current is 3 A.
Ideally, for my OVP ...
user220456
1
vote
1
answer
238
views
What happens if the Input voltage and the output voltage are same in a boost converter?
I'd just like to know what would happen if the Input voltage and the output voltage are same in a boost converter. I have a feel that it might not work.
But would like to understand the effects that ...
user220456
1
vote
0
answers
55
views
Boost converter output voltage drops
I'm using an MIC2251 (MIC2251-1YD5-TR) in a design to boost a lithium battery (3.6V-4.1V) to 5.4V for powering a small camera peripheral that requires a typical draw of 80mA. I expect that the worse ...
user220456
0
votes
0
answers
30
views
How to change from HyperLight Load mode to forced PWM mode
In the MIC33M650 step-down module, is there a possibility/workaround to deactivate the HyperLight Load mode? Or decrease the threshold of the current needed to activate forced-PWM mode?
user220456
1
vote
2
answers
68
views
Output load current less - DCDC Converter [closed]
I'm using this Boost converter. 3.6V to 12V with a load current 300mA. 10uH is the inductor used.
But I am only able to get a maximum load current of 120mA. What might be the reason?
user220456
4
votes
1
answer
216
views
Switching frequency data not available
Why do some dc-dc buck or boost converters do not have the switching frequency value in their datasheet?
For example: Link does not have switching frequency ?
Is it possible to get power dissipation ...
user220456
16
votes
4
answers
5k
views
What is the difference between a linear regulator and an LDO
Can someone tell me what the difference between linear regulators and LDOs is?
From what I have read and understood, it is that linear regulators and LDOs don't use switching elements, but I think ...
user220456
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
0
votes
1
answer
80
views
Why is my switching frequency so abnormal?
I am using this Buck Converter 2A part.
I am giving an input voltage of 3.3V to get an output of 1.2V for a switching frequency of 2.25MHz.
I am giving different load currents of 0A, 0.2A, 0.5A & ...
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
1
answer
588
views
How to find the minimum and maximum voltage of this buck converter
I am using buck converter. 3.3V output & 2.5A part with 2.1MHz switching frequency.
I am powering my microcontroller with this 3.3V output. So, I'd like to find the output voltage tolerance of the ...
user220456
0
votes
1
answer
1k
views
LC filter of buck converter
Can someone explain me intuitively on why the LC filter cut off frequency should be very less than the switching frequency of the buck converter?
What is the reason and why can't it be higher than the ...
user220456
0
votes
1
answer
517
views
Buck converter output LC filter phase difference
I was going through a few buck converter questions in this forum to understand deeply about the circuit and I found this question. However, I am not focused too much on the ripple right now. But when ...
user220456
1
vote
2
answers
1k
views
What causes harmonics in DC-DC Switching converters like Buck and Boost Converter
Can someone tell me what and how the harmonics are caused in the DC-DC Switching converters?
I tried to read this, but I am not understanding. Can someone please explain in simple terms
user220456