This isolated open-loop LLC transformer-driver converter reference design provides four rail outputs. Each output has dual +18-V and –5-V outputs up to 0.5 W for traction inverter applications. The LLC topology allows the transformer to have significant leakage inductance, but a much smaller primary-secondary capacitance, which significantly reduces common-mode current injection through the bias transformer. This reference design offers a high level of integration and high efficiency in a compact form factor. It has passed CISPR 25 class-3 conducted EMI standard.
| Output voltage options | PMP40970.1 | PMP40970.2 | PMP40970.3 | PMP40970.4 |
|---|---|---|---|---|
| Vin (Min) (V) | 24 | 24 | 24 | 24 |
| Vin (Max) (V) | 24 | 24 | 24 | 24 |
| Vout (Nom) (V) | 18 | 18 | 18 | 18 |
| Iout (Max) (A) | .022 | .022 | .022 | .022 |
| Output Power (W) | .396 | .396 | .396 | .396 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated | Isolated |
| Input Type | DC | DC | DC | DC |
| Topology | Half Bridge- LLC | Half Bridge- LLC | Half Bridge- LLC | 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
Detailed overview of design layout for component placement
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
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | Multiple Output Isolated Driver Bias Supply Reference Design | PDF | HTML | Jan. 25, 2022 |
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