300W Isolated DC-DC Converter
This reference design provides specification, block diagram and PCB layout data of 300W isolated DC-DC converter which is small size and suitable for consumer applications.
Description
- Input voltage : DC 36 to 75V
- Output voltage : DC 12V
- Output power : 300W
- Circuit topology : Phase Shift Full Bridge + Synchronous Rectification
Features
- Total efficiency : 94.5%(Vin=48V, 100% load)
- Outline size : 82mm x 82mm x 24mm
- Provides appropriate power MOSFETs and photocouplers totally.
Reference design files
Design, Document
“Design・Document” contains the documents listed below.
Design, File
“Design・File” contains the documents listed below.
*1：Actual PCB was designed on CR5000BD.
The other files were made from CR5000BD file.
*2：The data was generated on CR5000BD.
The other files were made from CR5000BD file.
*2：The data was generated on CR5000BD.
Toshiba items
| Part Number | Device Category | Portion Usage | Description |
|---|---|---|---|
| TPN1200APL | MOSFET | Primary side・4 | U-MOSIX-H/100V/10mΩ(max)@VGS=10V/TSON Advance |
| TPH3R70APL | MOSFET | Secondary side synchronous rectification・4 | U-MOSIX-H/100V/3.7mΩ(max)@VGS=10V/SOP Advance |
| TLP291(SE GR | Photocoupler | Output voltage feedback・1 | DC input/Trasistor output/BVS=5000Vrms/11-3C1 |
| TLP2370 | Photocoupler | Communication between primary side and secondary side・2 | DC input/IC output/BVS=3750Vrms/SO6/For high-speed communication |
| CRS10I30B | Schottky Barrier Diode | Secondary side・1 | 30V/1A/VFM=0.42V(max)@IFM=1A/S-FLAT |
| CTS05F40 | Schottky Barrier Diode | Secondary side・7 | 40V/0.5A/VF=0.81V(max)@IF=500mA/SOD-882 |
Documents
Video
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