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Texas Instruments UCC25800A | Demoboard PMP31333
Reinforced-isolation LLC converter reference design for SiC and GaN driving supply
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 24 V |
| Output 1 | 12 V / 0.2 A |
| IC revision | A |
Description
This small form factor power supply provides bias power to isolated silicon carbide (SiC) or gallium nitride (GaN) MOSFET gate drivers when extremely high dV/dT on the secondary side is expected, such as wideband gap switches. The board accepts 24V input and supplies 12V at 200mA. The resonant inductor-inductor-capacitor (LLC) topology, combined to low primary to secondary winding capacitance, makes this converter an option for low-noise and high common-mode transient immunity (CMTI) applications, while reducing common-mode current injection through the transformer. Even though this isolated LLC converter works in open-loop, the output voltage keeps tracking VIN and has very low variation versus load current.
Features
Reinforced insulationExtreme low primary-secondary winding capacitanceRegulated 24VIN to 12VOUTTested with 30µF switched output capacitance (first activation of high-side GaN or SiC-FET)Resonant (secondary side) LLC topology
Typical applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | C | VR(V (DC)) | Endurance(h) | IRIPPLE(mA) | Z(mΩ) | ILeak(µA) | DF(%) | Ø D(mm) | L(mm) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-TBL Series 2141S - 3.50 mm Horizontal Entry Modular w. Rising Cage Clamp, 2, Rising Cage Clamp | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Pins2 | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 30 to 16 (AWG) 0.05 to 1.31 (mm²) | – | – | – | – | – | – | – | – | Length7 mm | PackagingBox | ||||
 | WCAP-ASLL Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ASLL Aluminum Electrolytic Capacitors | – | – | – | – | – | Capacitance100 µF | Rated Voltage25 V (DC) | Endurance 2000 | Ripple Current300 mA | Impedance360 mΩ | Leakage Current25 µA | Dissipation Factor14 % | Diameter6.3 mm | Length7.7 mm | Packaging15" Tape & Reel |