This offline flyback reference design uses the LM5021 controller to generate 3 isolated outputs (12 V at 705 mA, 12 V at 733 mA, 35 V at 25 mA) from an 3 phase AC input (58 VAC - 255 VAC). The DC input voltage range is between 100 V and 623 V. The design can provide 18-W output power. The LM5021 uses an optical coupler to regulate the 12-V output and to improve transient response. The controller operates with a fixed frequency of 100kHz.
| Output voltage options | PMP30495.1 | PMP30495.2 | PMP30495.3 |
|---|---|---|---|
| Vin (Min) (V) | 100 | 100 | 100 |
| Vin (Max) (V) | 623 | 623 | 623 |
| Vout (Nom) (V) | 12 | 12 | 35 |
| Iout (Max) (A) | .705 | .733 | .025 |
| Output Power (W) | 8.46 | 8.796 | .875 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated |
| Input Type | DC | DC | DC |
| Topology | Flyback- CCM | Flyback- CCM | Flyback- CCM |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | 58-VAC - 255-VAC 3-Phase Input Multiple Output Flyback Reference Design | Dec. 21, 2018 |
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