This reference design provides an isolated, 28V/3A output from a standard telecom 36V to 72V input at >88% efficency. The LM5020-1 is a PWM controller with wide input voltage range allowing the converter to be powered directly from the input line and eliminating the need for an auxilliary transformer winding. Output voltage regulation is based on current mode control, simplifying loop compensation. LM5020-1 is capable of supporting duty cycles up to 80% using internal slope compensation allowing the controller to support a wide range of power configurations.
| Output voltage options | PMP20777.1 |
|---|---|
| Vin (Min) (V) | 36 |
| Vin (Max) (V) | 72 |
| Vout (Nom) (V) | 28 |
| Iout (Max) (A) | 3 |
| Output Power (W) | 84 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Flyback- Non Sync |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | PMP20777 Test Results | May 31, 2017 |
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.