12V 40A Switch Mode Power Supply LLC Resonant Converter

NCP5106A NCP1396A Detailed study the principles of operation of the serial, parallel and serial-parallel resonant LLC Converter. Think about the possible organization of multiphase serial-parallel Converter LLC SMPS . WITH using math and simulation tools compare the current design of the individual Power devices, single-phase and multiphase versions of the inverter. Carry out a theoretical proposition two-stage serial-parallel LLC converters with output parameters 12 V / 40 A and include a comparison with its monophasic variant. Based on the theoretical design build functional sample the frequency and will compare its parameters with the theoretical suggestions.

SMPS 12V 40A LLC Resonant

When the proposal was based on an existing Integrated circuit (IC) which has proved itself in use to control a simple LLC resonant converter. Used IC’s from the company ON Semiconductor and has a designation NCP1396A

The source was proposed for a dc input voltage prepared from the PFC , used a power part of the converter and especially “power” the voltage intended for the control and excitation modules Specific voltage for power the degree should acquire the value of 385V and the power supply voltage values from 12-17V.

NCP 5106, of IC2 and IC4. The described exciter control the switching transistors Q1, Q3 and Q2, Q4, bearing the “pull down” resistors R2, R3 and R6, R7, which together with the resonant kapacitory C4, C5, and C7, C8 and transformers TR1 and TR2 form the primary power part of a three-phase resonant converter. Diodes D2, D3 and D7, D8 constitute a voltage limiter or primary overcurrent protection, as with increasing current of the primary winding of the transformer increases the voltage

LLC SMPS Circuit pcb schematic all files alternative links:

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