All Questions
31
questions
5
votes
2
answers
285
views
Non inverting buck boost transfer function
When considering the compensation of a non inverting buck boost (single inductor), the datasheet considers to take into account the worst transfer function between the buck transfer function and the ...
- 2,478
0
votes
2
answers
108
views
Power Converter Average Modelling
This image is from Christophe Basso presentation. It has been mentioned in the slide that average model can predict the transient response but I have one question when we say average model then it ...
- 119
0
votes
2
answers
142
views
How does current flow in this circuit with multiple power regulators?
I have the following circuit:
simulate this circuit – Schematic created using CircuitLab
U1 contains two voltage regulators (Vo1=+10V, Vo2=-10V, input Vin=5V). (These could be buck, boost etc. ...
- 1,326
0
votes
1
answer
1k
views
Laptop adapter + DC buck/boost converter or buck convereter only?
I have an old laptop adapter, with 19 V - 4.74 A DC output ratings. Suppose I need to draw 3 A @ 11.1 V for one of my circuits. I have been doing some research about dc-dc converters and have some ...
- 2,106
6
votes
1
answer
3k
views
Slope compensation in current mode control
There is something a little bit confusing to me between papers dealing with the theory of external slope compensation in current mode control of SMPS and application notes dealing with implementation (...
- 1,020
12
votes
3
answers
1k
views
Why are boost/buck converters never fully integrated/all-in-one?
Moving from small arduino applications to higher-power applications for work, I've had to switch from using simple linear regulators to switching boost/buck converters any time a different voltage to ...
- 688
0
votes
1
answer
500
views
Ramp compensation for UC1843 and UCC38C44
When we pick up the datasheets of UC1843B-SP and UCC38C44, we notice that they have the same functional block diagram, specially the PWM generator circuit (Error amplifier, current sensing PIN and the ...
- 1,020
1
vote
1
answer
83
views
Current Sensing Design
while using MCP1630 in switch mode power supply design, in the datasheet they gave the input bias current of the "current sense pin"
what are the considerations the designer should take while ...
- 1,020
0
votes
2
answers
1k
views
DC/DC Converter Output Power Rating
Looking at chips such as
AP6502A
TPS5430
The output capability is rated in peak and continuous current. Why are they not rated in terms of power? What output voltage is this current rating for?
...
- 1,008
2
votes
1
answer
611
views
MC34063A Poor load regulation in case of boost and buck converters
I'm using following circuit for a boost converter using MC34063A IC.
The circuit is designed for 24 V, 250 mA output. The simulation works fine but the actual circuit on a PCB behaves weirdly. In ...
- 65
0
votes
3
answers
264
views
Current consumption of devices [duplicate]
I want to use boost converter to to supply higher voltage to LED .I have confusion about which smps power supply to use on input side.
From specs. I am unable to understand why input current ...
- 1
1
vote
1
answer
691
views
Is there a good topology for splitting a DC power supply from a few LM2576 and LM2577?
So, this isn't the most serious project, more of a toy/hack, but I have a some LM2576 and LM2577 and I wanted to see if I could somehow get an adjustable dual rail (bipolar) supply out of them, for ...
- 793
0
votes
0
answers
114
views
Buck Vs. Buck-Boost for Portable Variable SMPSU
I'm looking to design a variable output power supply that can do 0-30V and up to 10A. I am going to build a custom battery pack for it out of 18650 cells so I have control over the capacity and ...
- 231
2
votes
0
answers
899
views
Advanced ATX Power Supply Modifications
I know there are multiple tutorials and questions regarding converting an ATX power supply, new or old, to a benchtop power supply for projects. I'm fully aware of how to make the basic conversion to ...
- 231
2
votes
2
answers
2k
views
switching noise from ltc3780
I have currently built a buck-boost converter using LTC3780 on a breadboard following this deisgn.
The circuit is calculated and designed to accommodate the input voltage given in the schematic. I ...
- 21