This reference design extends the hold-up time beyond 10 ms without a bulky output capacitor bank. A 60-V high-voltage energy storage capacitor is used on the input side. It quickly connects to a flyback converter when a line interruption is detected, charges up the input capacitor and extends the hold-up time. The active-switch circuitry is fast-acting and current-limiting. By removing the bulky output capacitor bank, it reduces the total size. It is a compact reference design for isolated power supply where a long hold-up time is required.
| Output voltage options | PMP20565.1 |
|---|---|
| Vin (Min) (V) | 9 |
| Vin (Max) (V) | 60 |
| Vout (Nom) (V) | 12 |
| Iout (Max) (A) | 2 |
| Output Power (W) | 24 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Boost- Non Sync^Flyback- Non Sync |
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
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Hold-Up Time Beyond 10 ms Using Flyback Converter Reference Design | Jan. 17, 2020 |
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