Questions tagged [switch-mode-power-supply]
A switch-mode power supply (SMPS) switches been fully-on and fully-off states quickly to maintain voltage regulation. They offer lower power dissipation and run cooler than linear regulators that continually dissipate power through a transistor.
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Is it correct to route feedback and GND signals like this in a 1kW push-pull DC-DC converter PCB design?
I am working on the PCB layout of a DC/DC converter with push-pull topology, designed to deliver 1000W power with 24V input and 400V 2.5A output. The PCB is designed as a 2-layer board.
In the image ...
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Can I build a 150 - 900V to 24V DC/DC Converter without needing custom transformers or magnetics?
I'm currently designing a 150-900Vin to 24V, 500W DC/DC converter using an active-clamp forward topology which seems to work in theory, but is mostly bottlenecked by the transformer and magnetics.
I ...
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Best topology for 150V - 900V DC/DC Converter with 500W output?
I need some advice on designing a 600V DC/DC converter and picking the right topology.
Specs:
Input Voltage: 150V - 900V DC (600V nominal)
Output Voltage: 24V
Power Rating: 500W
Target Efficiency: 90%...
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Output voltage spike in DCM flyback converter
I have built a flyback prototype board that provides 12 V, 5 A output and has a universal input range. It is being run in very low load condition (200 mA) for testing purpose. As seen in the below ...
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LT3511 flyback converter - Lower output voltage than expected
I am using the LT3511 to construct the 12V to +/- 70 V isolated flyback converter in its datasheet.
With no load, I am getting +/- 48 V.
I want to know why there's a discrepancy between the expected ...
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What is the switch mode equivalent of a center tap common dual rail linear power supply?
The title is the question.
I haven't really found any answers to this question. From what I've read one can't simply take two switching supplies and tie the negative and positive of both together to ...
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TOP254 SMPS problem
I have a special power supply using attached circuit diagram.
Problem description: this circuit faced damage from water after cleaning and replace a new MOSFET and some bad connection the circuit ...
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How to design CV/CC control loop of Ap43771V
The questions are based on the AP43771V datasheet, specifically Figure 4, titled “The CC/CV Control Loop in AP43771V.”
CV Case: Figure 4 shows that in the Constant Voltage (CV) mode, the VCC is ...
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How can I get rid of digital noise from the audio of an MP4 player?
I have a small MP4 player that plays videos from SD cards. I've embedded it inside a small CRT TV.
Discovered that there is noise on both the audio/video lines that corresponds to read cycles from the ...
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Proper output voltage is not generating as per the input voltage
I'm using a MAX17502H DC-DC converter for converting 5 V to 3.3 V, as per the calculation inductor value is 24.75 μH, but I used a 22 μH inductor because of component availability. Problem is output ...
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Type 3 Compensator - Strange Frequency Response
I'm currently trying to build a type 3 Compensator (without fast-lane) for a SMPS.
I first calculated the Transfer Function of the Plant (Power Stage).
Because there is no ESR (in theory at least) in ...
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What Happens When Parallel Two Buck Converters on the Same Input Line
I have two buck converters on single PCB, connected to the same 24V DC input line. One converter outputs 5V with a maximum load current of 2A, and the other outputs 5V with a maximum load current of ...
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Question About GaN Driver Design
I am reading an application note about GaN driver circuit design from Innoscience (Innoscience-AN001¹). Just about capcitor Cc using to provides a negative voltage for gate during turn-off. What ...
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Capacitor arrangement at VDD pin of STM32WBA6
I am designing my first PCB and it uses an STM32WBA63 MCU. In the power scheme diagram (p97 of the datasheet), it is written "n x 100nF + 10 µF" for the corresponding n VDD pins (in my case: ...
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Buck Converter: Zener Diode randomly shorted
I am using an MPQ4433 buck converter with the following setup:
Input: 24 VDC from an SMPS powered by 220 VAC.
Output: 5 VDC, regulated by the buck converter.
Load: RFID reader (industrial-grade ...
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