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Texas Instruments UCC25800 | Demoboard PMP22835
Isolated IGBT and SiC Driver Bias Supply Reference Design for Traction-Inverter Applications
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 24 V |
| Output 1 | 20 V / 0.3 A |
| Output 2 | -4 V / 0.3 A |
Description
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.
Features
- Open-Loop LLC transformer driver
- Ultra-low EMI
- 9-V ~ 34-V supply range
- 6-W output power with 24-V input
- Resistor programmable switching frequency from 100 kHz to 1.2 MHz
- Synchronization to external clock
- Programmable maximum dead-time with automatic dead-time adjustment
- Under voltage lockout
- Adjustable over-current protection thresholdExternal disable function
- Input over voltage protection
- Over temperature protection (TSD)
- Fault-code output for system intelligence
- Latched and fault-auto-restart versions available
- 8-Pin DGN package with thermal pad
Typical applications
- Automotive traction inverter,IGBT and SiC gate driver bias, Automotive DC/DC,automotive on-board charger, EV charging station, automotive super charger, UPS and solar inverters, Industrial motors, elevators, and escalators.
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | VIN(V) | VOut1(V (DC)) | PO(W) | CWW 1(pF) | L(µH) | ∫Udt(Vµs) | fswitch(kHz) | n | Version | IC Reference | IOut1(A) | Type of Insulation | NPRI : NSEC | VT(V (RMS)) | L(mm) | W(mm) | H(mm) | Mount | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PPTI Push-Pull Transformers, 5 V (DC), 5 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 15 V (DC) | – | Interwinding Capacitance5.25 pF | Inductance340 µH | Voltage-µSecond10 Vµs | Switching Frequency 300 - 620 | Turns Ratio1:1.1 | VersionPush-Pull | – | Output Current 10.8 A | Type of InsulationReinforced | Turns Ratio1:1.1 | Insulation Test Voltage5000 V (RMS) | Length9.14 mm | Width12.7 mm | Height7.62 mm | MountSMT | – | – | – | – | – | |||
 | WE-AGDT Auxiliary Gate Drive Transformer, 7.5, 13 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-AGDT Auxiliary Gate Drive Transformer | Input Voltage 7.5 | Output Voltage 113 V (DC) | Total Output Power4.55 W | Interwinding Capacitance0.68 pF | Inductance16.5 µH | Voltage-µSecond36 Vµs | Switching Frequency 500 | Turns Ratio1:1.67 | VersionLLC | IC ReferenceUCC25800 | Output Current 10.64 A | – | – | Insulation Test Voltage4000 V (RMS) | Length11.3 mm | Width10.95 mm | Height11.94 mm | – | – | – | – | – | – | |||
| WE-AGDT Auxiliary Gate Drive Transformer, 13, 11.5 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-AGDT Auxiliary Gate Drive Transformer | Input Voltage 13 | Output Voltage 111.5 V (DC) | Total Output Power6 W | Interwinding Capacitance1.3 pF | Inductance50 µH | Voltage-µSecond60 Vµs | Switching Frequency 500 | Turns Ratio1:1 | VersionLLC | IC ReferenceUCC25800 | Output Current 10.76 A | – | – | Insulation Test Voltage4000 V (RMS) | Length11.3 mm | Width10.95 mm | Height11.94 mm | – | – | – | – | – | – | |||
 | WR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header, –, – | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length12 mm | – | – | MountTHT | Pins2 | PCB/Cable/PanelPCB | ModularityNo | TypeHorizontal | – | ||
| WR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length17 mm | – | – | MountTHT | Pins3 | PCB/Cable/PanelPCB | ModularityNo | TypeHorizontal | – | |||
 | WR-TBL Series 3527 - 5.00 mm Vertical, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3527 - 5.00 mm Vertical | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length10 mm | – | – | MountCable | Pins2 | PCB/Cable/PanelCable | ModularityNo | TypeVertical | Wire Section 12 to 22 (AWG) 3.31 to 0.129 (mm²) | |||
| WR-TBL Series 3527 - 5.00 mm Vertical, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3527 - 5.00 mm Vertical | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length15 mm | – | – | MountCable | Pins3 | PCB/Cable/PanelCable | ModularityNo | TypeVertical | Wire Section 12 to 22 (AWG) 3.31 to 0.129 (mm²) |