Questions tagged [dc-dc-converter]
DC-DC conversion. Implies conversion of a DC voltage level up or down. DC-DC converter can be isolated or non-isolated. Electronically it can be done by many kinds of circuits, depending upon the application (charge pumps, voltage multipliers, linear voltage regulators, boost/buck switched converters, etc)
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Bidirectional flyback converter design
I see a fair amount of questions on here about designing flyback converters, but I don't see any about designing a bidirectional DC/DC flyback converter, such that either side can be the primary and ...
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Startup transient on LMR14030-Q1 buck converter
So I'm trying to build my first buck converter for an audio project using a TI LMR14030-Q1. My first design had some acoustic noise so I changed the switching frequency, inductor, and output ...
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How to determine Vds(on) and Vds(off) for switching loss calculation?
In the Infineon Application Note, two of the parameters they've used to calculate the switching loss of the MOSFET are Vds(on) and Vds(off).
Is the Vds(off) the blocking voltage?
Where do they obtain ...
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Output voltage not stable - What is compensation with respect to DC-DC (buck converter)?
EDITS:
Input voltage range: 24V to 48V.
Changing the load current from 0.38A to 1.018A increases the mean output voltage from 12.779V to 13.26V. The supply should be producing 12.5V.
I'm using this ...
user220456
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Using the phase side of the line as ground for an isolated dc/dc converter
This evaluation board mention connecting the GND of the board to the phase side of the line in order to use a shunt to measure current from the high side. In this example they use a capacitive power ...
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Is it mandatory to isolate D+/D- to clean my noisy MIDI power supply
I designed a Piano controller with MIDI synthesizer board which works pretty well but there's noise in the jack output. All my board is supplied by the USB (a typical type B connector).
I searched ...
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LM3150 Webench not matching with LTSpice?
I'm trying to implement this design from Webench (5V @ 10A):
I'm using LTspice to simulate this design, but my results are bizarre, as shown here:
I have looked into this thread: TI Webench and ...
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Adding an adjustable constant current option to a LM5175 circuit
Disclaimer: I'm no electronics engineer and I have no experience in this kind of circuit! I do occasionally design simple analog circuits and PCBs, barely messing with opamps.
Context:
I'm about to ...
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Power Supply Nixie tubes (IN 9)
I am in big trouble with my power supply for Nixie tubes (IN 9 bargraph.)
I need 140V -160V (150V prefered) output voltage and 10x 12mA --> ~140mA current. (~ 21W).
I tried to design boost ...
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Ripple in output voltage
I am working on an Active Clamp Forward converter.
Schematic is given here:
Specs:
Output voltage-5V
Input voltage 26..42V
frequency=500KHz
Output power=10W
It is working fine in open loop, but in ...
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PoE+ Forward Converter Issues
I want to implement a 12v PoE+ PD power supply, and have settled on the LTC4269 for use in this application. Unfortunately I'm having problems getting my head around everything that is going on.
A ...
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Constant current feedback op-amp analysis
Above is the schematic for the convoy XHP35 flashlight driver. As you can see, the current control loop uses the op-amp as a comparator between a setpoint (low-pass filtered PWM output from a ...
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SiC461 regulators unpredictably dying under load
I am having problems with a design using SiC461 regulators.
I attached a snippet of the relevant schematic file. The problem I am facing is that under load (powering an LED strip with peak current of ...
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DC-DC Converter MOSFET Failures
I've been seeing failures in a few of my circuits in which Q17 and sometimes also Q16 are failed closed in the DC-DC converter. MOSFETs used are Vishay SiHP12N50E.
Below is a schematic reference for ...
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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 ...
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