15 Watt switching power supply

15 Watt switching power supply schematic diagram. Pulse transformer T1 is performed on the ferrite core M2500NMS-2 or M2000NM9 Sh5h5 size (cross-section of the magnetic coils at the location of 5×5 mm with a gap in the center). Winding wire is made brand PEL-2. Winding 1.2 turns of wire contains 600 0.1 mm in diameter, 3-4 – 44 turns of 0.25 mm diameter, 5-6 – 10 turns in the same wire as the primary winding.

The schematic diagram come from circuit: Simple Switching Power Supply 15 Watt power supply. Go to that page to read the explanation about above power supply related circuit diagram.

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Using the LTM4627 integrated circuit designed by Linear technology you can design a very simple , high efficiency 15A switching power supply . Because the LTM4627 switch mode circuit include in the package almost all components required : switching controller, power FETs, inductor and compensation components , this high power switch mode DC regulator IC require few additional external electronic components .
This switch mode power supply circuit has a wide input operating range from 4.5V to 20V,and will provide a very stable output voltage range of 1.2 volt . The LTM4627 supports an output voltage range of 0.6V to 5V, set by a single external resistor , so you can modify the output voltage .
High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, multiphase/current sharing operation, Burst Mode operation and output voltage tracking for supply rail sequencing.
Because the value for the output capacitor depends of output voltage please take a look in the datasheet at table 4 ( just if you modify the design ) .