This SEPIC converter reference design is designed for 2-MHz switching frequency. Applying a high switching frequency to a hard-switched topology results in increased switching losses at FET and rectifier as well as increased core losses and AC losses at the windings. To minimize those losses, the FET and dual inductor must be carefully selected. By doing so, an efficiency of almost 90% at peak current 2 A by nonsynchronous rectification is achieved. This reference design is designed for pulsed load, switching from 0.2-A to 2-A continuously and a current transient of 90%. For best load regulation, the loop bandwidth has been tuned to achieve a load-step response of approximately 1% deviation output voltage.
| Output voltage options | PMP30784.1 |
|---|---|
| Vin (Min) (V) | 6 |
| Vin (Max) (V) | 18 |
| Vout (Nom) (V) | 12 |
| Iout (Max) (A) | 2 |
| Output Power (W) | 24 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Sepic- 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 overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | 2-MHz Automotive SEPIC Reference Design | PDF | HTML | Jun 8, 2022 |
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