This isolated open-loop LLC transformer driver converter provides dual +20-V and -4-V outputs up to 6 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.
| Output voltage options | PMP22835.1 | PMP22835.2 |
|---|---|---|
| Vin (Min) (V) | 24 | 24 |
| Vin (Max) (V) | 24 | 24 |
| Vout (Nom) (V) | 20 | -4 |
| Iout (Max) (A) | .3 | .3 |
| Output Power (W) | 6 | 1.2 |
| Isolated/Non-Isolated | Isolated | Isolated |
| Input Type | DC | DC |
| Topology | 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
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Isolated IGBT and SiC Driver Bias Supply Ref. Design for Traction-Inverter Apps | PDF | HTML | Apr. 01, 2021 |
| White paper | 以可靠且經濟實惠的隔離技術解決高電壓設計挑戰 (Rev. C) | PDF | HTML | Feb. 15, 2024 | |
| White paper | Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. C) | PDF | HTML | Sep. 26, 2023 | |
| White paper | 높은 신뢰도와 합리적인 가격대의 절연 기술 개발과 관련한 고전압 설계 문제의 해결 (Rev. B) | PDF | HTML | Sep. 19, 2023 | |
| More literature | Isolated gate-driver bias-supply design considerations PPT | Dec. 02, 2021 |
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