All Questions
Tagged with dc-dc-converter power-electronics
266
questions
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Maximizing power transfer from 50Hz AC line via toroidal current transformer
This paper looked at ways of achieving high power-to-weight ratio for harvesting power from a 50Hz overhead line.
https://findresearcher.sdu.dk/ws/portalfiles/portal/250674676/...
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plecs simulation of output impedance of switched capacitor(SC) converters
I am trying to simulate how output impedance of several DC/DC switched capacitor converters(dickson, ladder, and series-parallel) changes as switching frequency increases.
I referred to several papers;...
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5
answers
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How does MPPT maintain a constant voltage?
I have a slight confusion in the working of the MPPT algorithm in solar inverter. I am confused about how this converter maintains a constant 310V (required for H-bridge) with MPPT. MPPT is a maximum ...
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2
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195
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Calculating junction-to-ambient temperature rise for switching MOSFET
So I'm looking at datasheet's since I'm looking for a N-Channel MOSFET for a DC-DC Buck Converter that will be switching at 1.2MHz. Since the MOSFET will be used as a switch for the Buck Converter, I ...
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56
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Middlebrook Stability Criteria for Input Filter
I am trying to apply Middlebrook input filter stability criteria for Active clamp forward converter .So for finding Input filter output impedance over the frequency range is quite straight forward in ...
- 119
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Average Model of Peak Current Mode Buck Converter
I am trying to understand average model of Buck Converter for Peak Current Mode Control Topology. Below is a snapshot taken from the Christophe Basso Webpage, from file “PWM Switch LTspice: Mark ...
- 119
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60
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Peak Current Mode Control Buck Converter Slope Compensation Info From datasheet
I am working on Buck Converter design based on LT8642S controller and trying to do average modelling ,so I contacted manufacturer regarding slope compensation info and they responded below.
"The ...
- 119
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101
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Buck Converter Peak Current Mode Control Average Model
I am trying to understand average model of Buck Converter for Peak Current Mode Control Topology.
Below snapshot taken from Christophe Basso Webpage(https://powersimtof.com/Spice.htm) from file "...
- 119
1
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3
answers
106
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Kapton instead of air gap (ferrite core)
I'm working on a flyback converter topology and I want to create a 1 mm air gap in the ferrite core transformer in order to decrease AL. I didn't find one with air gape, I heard of a solution that is ...
3
votes
1
answer
66
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A question of control of flyback converters
Considering control of flyback converters, is it possible to control a converter which has pure current load (configuration on the picture)? Does it have to always be purely resistive load, because I'...
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56
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Calculate Li-ion discharge time for two different loads, one after the other
Battery: 2S (2 cell), 7.4 V nominal, 3000 mAh, and 8C max.
CC LED driver: TPS92691
LED string 1 (in series):
I(f) = 1.5 A CC @ V(f) 17 V
As simulated through WEBENCH, the input current required at ...
- 407
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67
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Can one CC boost LED driver be used for 2 different loads separately?
I have a constant current boost LED controller (TPS92691) which I am designing to output 4A switching between two LED strings. This is with a 2S lipo battery. One string has a stack forward voltage of ...
- 407
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2
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39
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Does a current sense resistor not always mean a constant current output for dc-dc converter?
I've had a understanding that having a current sense resistor feeding into sense pins or a feedback pin meant that the inductor current was changing wrt the variations across sense resistor, hence ...
- 407
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23
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Apart from MOSFET selection what else determines max output current for LED controller IC?
TPS92691 is a LED controller, not a monolithic IC which has an integrated FET. Hence, I'm curious why the landing page for this part (https://www.ti.com/product/TPS92691) mentions that Iout(max) is 5A ...
- 407
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1
answer
229
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What does "Single-Ended Primary Inductor" mean?
SEPIC stands for Single-Ended Primary Inductor Converter. Could anyone explain what "Single-Ended Primary Inductor" means in this context?
(Image from schematic of SEPIC in wikipedia here)
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