buck converter

Hi everyone, I won't bore you with background but I've been working on this for a long while and would love some feedback on it's efficacy. It's the first major circuit project I've ever undertaken, you guys seem nice but still I'd appreciate if you could keep that in mind. As stated in the...

Hello, First of all, which company's ICs should I look at, Texas or Analog? I want to design a synchronous buck converter to deliver 5.1 VDC at 3 A maximum to a Raspberry Pi 4 B via a USB-A port. My power source is 24VDC from a power supply at 230VAC to 24VDC. My first choice is the LMS3655...

So i am trying to build this circuit using nothing but basic components (RLC) with a 555 timer for the PWM and Op Amps for feedback to ensure it is regulated. It needs to be able to take an input of 20V +- 4V and output a steady 5V@0.5A. My idea is to take a voltage divider at the buck converter...

Dear all, I have an aluminum tube (30mm outer diameter) which is the bottom part of a flashlight. BUCK DIMENSIONS: The inside diameter is 24.5mm, inside which I want to install a buck converter to run a motor. (This of course allows a 17mm square to just about fit - see diagram). The height...

Hi. I was trying to adjust the output of this LM2596 3 POT to 1.4VDC and 30mA. The voltage potentiometer(left pot)was not a problem to be adjusted to 1.4VDC,but i couldn't adjust the current potentiometer(right pot)to 30mA. The instructions says to connect the output to ammeter(dmm)at 10A option...

I'm trying to simulate a circuit using IR2110 as the gate driver to build a medium power DC converter. While running the simulation with the given schematics, I get an error on the HO side. The HO waveforms a square wave varying between 40 - 0V, even when the VCC is set at 15V. When I remove...

I want to create a 24v to 12v buck converter. I am trying to control mosfet with optocouplör. I have 25kHz-50kHz pwm signal from arduino/pic16f877A. I have some mosfets like IRFZ44N, IRF540N IRF4905 and etc. I am using PC817 opto but I guess it is not suitable for high frequency pwm like 25kHz...

Hello there! I am working on a buck converter (Input: 24 V, Output: 10 V) with gate driver circuit and type III analog voltage-mode controller. I am facing the issue wherein when I'm inputting around 12 V it outputs 9 V but then the current is also high (around 1.4 A). The duty is around 90%...

I I copied the buck converter in the picture and turned the simulation around. But the resulting waveform was not what I wanted. Shouldn't a dc waveform of 7.5V come out? What's the problem What role do transformers, diodes, resistors, capacitors, etc. play on the MOSFET gate input side, and...

What is the role and purpose of the 470uf capacitor? Is it simply disconnected because it's connected in parallel with 330uF? And 5 pin out is 15V pulse or low pulse? What is the expected transformer ratio?

Hey, I'm trying an ambitious project, making a DC converter using a microcontroller. I'm using a PNP transistor to drive both the high side and the low side MOSFET. When I'm trying the circuit, even if I keep the duty cycle as low as 20%, there is a path to the ground for the current (I'm...

Hello all, Disclosure, I am an electrical engineer but I deal with designing power system for construction projects. I decided to go back for Masters in Power Electronics. I'm rusty with DC circuits. My homework is the same as a previous thread...

Overview - I would like to install an Apple AirTag in a vehicle and have it gets its primary power from the vehicle's 12V battery. In the event that the 12V Battery is disconnected, I would like for a backup 3V Battery to continue to provide the power required to run the AirTag. Approach -...

Howdy! I'm trying to design a boost buck convertor from a 3D printer power module and I am using Multisim to simulate it before starting but I think I'm having issues with the biasing. (EE student noob here so bear with me!) My requirements are Vin 12V-30A Vout 0-50V (inverted) For the PWM I...

Hi, I'm building an engine driven generator to charge a 48V 300Ah LiFePO4 battery bank. The generator will output three phase power at 90 Vac line-to-line, 170 Hz. Electrical output power will be about 10kW at best efficiency point. I'm looking at options for how best to use this output to...

Hey everybody, first time here! As a personal project I am implementing a Buck Converter simulation in Python. My basic idea is to give a constant Vs supply and simulate the switch on/switch off steps in each switching period, calculate the increase/decrease in inductor current and calculate an...

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I have to use a 94V battery to power a 24V DC motor and looking for suggestions on a motor controller that will help with the buck converter aspect and in rush current of the motor? Im a student so still trying to learn the best way to do this and was told this may be the best approach? The...

Hi guys, what happens if a buck converter that previously was designed to operate in CCM at full load (max power output) and then I connect a less load lets say 10% of the maximum load? I simulated this in LTSpice and I can see that the buck converter changes from CCM to CrCM or even DCM also I...