You may also browse Design Example Reports (DER) in our website, these documents have detailed transformer construction for their corresponding designs. There is also a Transformer construction tab in the spreadsheet to guide you. LM200-10B24 is one of Mornsun’s enclosed AC-DC switching power supply. PI Expert automatically calculates the the turns ratio and primary inductance based on your design parameters (by default it shows results for flux density < 3800Gauss). LM200-10B24 Mornsun SMPS - 24V 8.8A - 211.2W AC/DC Enclosed Switching Single Output Power Supply. In this circuit, R2 is the required resistance between the diode and V-pin (shown in the spreadsheet as RV_BIAS) and R1 is the resistance from V-pin (RLS in the spreadsheet).įor the transformer, if the size allows, you may use RM6 or EE22 core. Back then, the original design weighed over 40lbs. HP’s calculator was really a computer albeit in a slightly different format than we know it today. 1976 saw the first patent to use the term switch mode power supply (SMPS) filed. You may check Application Note 72 ( ) or the attached image for simple schematic. The SMPS is a high efficiency, switch mode power supply specifically designed to be used in combination with our modules. In 1972, Hewlett Packard used a switching power supply in its first pocket calculator. RV_BIAS_ENABLED refers to this circuit modification wherein current is injected from BPP into the V-pin through a diode. Typical implementation for Line OV/UV protection is two resistors from DC bulk capacitor voltage to V-pin, but for your application (wide input voltage up to 440VAC) a circuit modification for V-pin is needed to extend the OV threshold value.

The InnoSwitch3 power supply input undervoltage and overvoltage protection thresholds are determined by the current into V-pin (see IUV and IOV parameters in device datasheet).

Smps power