This is a high voltage 310V to 60V buck converter, so we have that big 310V DC coming in which we usually get after rectifying 220V AC mains. So now that high DC is there and we want to push it down to something like 60V or lower for battery charging or similar work. Audio/Video […]
SMPS and Converters
Calculator to Design a High Power 3kW PFC (Power Factor Correction) Circuit
In this post I will explain how to use this active PFC calculator for calculating high current, high PFC designs. In our example we will be using 230 VAC input and 3 kW output and Vout equal to around 390 V, and we will try to see how each resistor and capacitor gets calculated in […]
SMPS Flyback Boost Converter Calculator
This calculator tool supports a Boost Converter Flyback setup which means now the code considers: Corrected turns ratio and primary voltage logic since the flyback works by storing energy during “ON” time and transferring to secondary during “OFF” time. Flyback boost topology where output voltage is higher than input. An accurate duty cycle formula for […]
Difference Between Forward Converter and Flyback Converter
We know SMPS can be made in different ways, but two common ones are flyback converter and forward converter, which may look same at first. But inside working is not same at all, so this part matters before you design transformer or power stage. Audio/Video Representation Flyback Converter We see a flyback converter works in […]
How to Add Adjustable Current and Voltage feedback Control to SG3525 Inverters
If you want to build a very heavy power inverter or when you want to make a high frequency induction heater, or when you want to make a lab grade variable SMPS, then getting precise control over both output voltage and current is a major engineering hurdle. Most standard designs using the classic SG3525 PWM […]
Adjustable 1Amp to 10Amp, 3V to 14V SMPS Circuit: CV, CC, and Short Circuit Protected
If you have ever tried building a high-power inverter, a high-frequency induction heater, or just a solid adjustable lab bench power supply, you already know that controlling both the voltage and current at the same time is an absolute nightmare. Most builders just grab the standard application circuit from the SG3525 datasheet, wire up a […]