All Questions
Tagged with dc-dc-converter power-supply
370
questions
0
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1
answer
73
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Constant output voltage in buck-boost converters
I'm a self-taught student. I'm trying to understand the working principle of buck-boost converters in continous conduction mode.
When the switch is turned on, the equation describing the inductor is ...
- 311
1
vote
0
answers
68
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Bipolar 15 V DC from 9 V DC
I’m looking to get a regulated ±15 V DC @100mA minimum from a 9 V DC source. It’s for an audio circuit, so it needs to have a switching frequency well above audio range, and it needs to have a small ...
- 11
0
votes
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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
1
vote
1
answer
50
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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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votes
1
answer
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
0
votes
1
answer
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
2
votes
0
answers
25
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designing power supply using LNK306DG [closed]
I am designing a converter circuit using LNK306DG and I have done this earlier. Now I have to swap the phase and neutral pins of the circuit, and what should be the changes I have to make in this ...
0
votes
0
answers
34
views
Anomalous behaviour of a DC-DC booster with LT3461A
I am building a circuit based of the CosmicWatch project, however I had to rebuild the circuit as I'd wished it to be integrated with other systems.
However, powering up the circuit (4.5Vin) instead ...
0
votes
1
answer
85
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Wide input voltage range buck/boost converter
I am designing a power supply circuit for a battery-operated device. My list of requirements:
Very low quiescent current (ideally under 1 uA), where by "quiescent" operation I mean no or ...
- 1
0
votes
0
answers
68
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Oring Diodes: is RC discharge circuit needed for prevent disconnection issue?
I have a new design implemented with oring diodes circuit as shown in picture below, where I have POE_VIN_24V coming from POE+ Module, and PHNX_DC_IN coming from phoenix connector, that is connected ...
- 1,067
2
votes
0
answers
95
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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
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answers
41
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Current Mode Control
I am referring the doc https://www.venableinstruments.com/current-mode-control-wp and trying to understand behavior of current mode control but unable to understand following things
1.
What is the ...
- 119
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votes
0
answers
39
views
Synchronous SMPS Enabling with Charged Output
When using standard slow-start circuits that slew the 'comp' net for topologies like synchronous buck and boost converters, there can be reverse current events if the supply attempts to enable when ...
- 63
1
vote
2
answers
75
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Powering multiple loads at same voltage with separated DC-DC converters
I'm working on the power distribution PCB of a battery powered robot with multiple loads at 24V, 12V and 5V. My idea is to use a big 24V converter, and then another two smaller converters to go from ...
- 35
2
votes
4
answers
274
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How to add a current limit for a dual rails power supply?
I want to make an adjustable power supply with -18 V and 18 V separately adjustable outputs. I found this circuit might be the best and simplest one to do the job.
How can I limit the output current ...
- 354