This reference design is an industry-first digital hybrid hysteretic control (HHC) solution, targeting server PSU applications with 12-V to 54-V output. This reference design shows the HHC control advantages by UCD3138, in a 400-V to 12-V 1-kW LLC power stage. This design achieves 8-kHz peak loop bandwidth. It holds less than 500-mV peak-to-peak deviation under 0% and 100% load translation with 2.5 A/us, and less than 800-mV peak-to-peak deviation under 0% and 150% load translation with 2.5 A/us.
| Output voltage options | PMP40586.1 |
|---|---|
| Vin (Min) (V) | 340 |
| Vin (Max) (V) | 420 |
| Vout (Nom) (V) | 12 |
| Iout (Max) (A) | 84 |
| Output Power (W) | 1008 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Half Bridge- LLC |
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
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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
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 1-kW Digital-Controlled Current Mode LLC Reference Design | PDF | HTML | Sep. 26, 2023 |
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