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Texas Instruments LMG3522R030 | Demoboard TIDA-010957
15kW, bidirectional, three-phase plus neutral flying capacitor based on GaN reference design
Overview
| Topology | Boost Converter |
| Input voltage | 1.8-5.5 V |
| Output 1 | 28 V / 0.98 A |
| IC revision | DECEMBER 2025 |
Description
This reference design provides a design template for implementing a three-level, three-phase plus neutral, Gallium Nitride (GaN) based flying capacitor power stage. The use of fast switching power devices allows switching at an equivalent frequency of 125kHz, reducing the size of magnetics for the filter and increasing the power density of the power stage. The multilevel topology allows the use of 650V rated power devices at higher DC bus voltages of up to 900V. The lower switching voltage stress across the transistors reduces the switching losses, resulting in an efficiency of 98.9% at full power.
Features
Power stage for three-phase plus neutralbidirectional DC/AC converter
- 650V rated switches in 900V system (due to threelevels)
- High switching frequency of 125kHz and highefficiency design (98.9%)
- 21ARMS per phase
- Control scheme that allows control of theunbalancing of three current phases
Typical applications
- Central inverter
- String Inverter
- DC fast charging station
- Onboard charger
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | RDC(mΩ) | fres(MHz) | Ø f(mm) | Ø ID(mm) | Ø OD(mm) | Color | Qty. | Pins | Gender | Type | Working Voltage(V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0603 | Operating Temperature -40 °C up to +85 °C | – | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | Packaging Unit4000 | – | – | – | – | ||||
| WCAP-CSGP MLCCs 25 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | Capacitance15 nF | Capacitance±10% | Rated Voltage25 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Packaging Unit10000 | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | Capacitance2.2 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Packaging Unit10000 | – | – | – | – | |||||
 | WR-DSUB Cable, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-DSUB Cable | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -55 °C up to +105 °C | – | Insulation Resistance5000 MΩ | – | Length30.8 mm | – | – | – | PackagingTray | – | Rated Current3 A | – | – | – | – | – | – | ColorBlack | – | Pins9 | GenderFemale | TypeCrimp Housing | Working Voltage125 V (AC) | |||
 | WA-SMST SMT Steel Spacer with through hole Ø 3.3, –, – | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SMST SMT Steel Spacer with through hole Ø 3.3 | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -55 °C up to +150 °C | – | – | – | Length2.5 mm | – | – | – | PackagingTape and Reel | – | – | – | – | – | Hole Diameter3.3 mm | Inner Diameter4.2 mm | Outer Diameter6 mm | – | Packaging Unit950 | – | – | – | – | ||
 | WE-LQS SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | – | – | – | – | – | – | – | – | – | – | Size2010 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length2 mm | Width1.6 mm | Height1 mm | – | – | Inductance10 µH | Rated Current0.5 A | Saturation Current0.6 A | DC Resistance860 mΩ | Self Resonant Frequency39 MHz | – | – | – | – | Packaging Unit2000 | – | – | – | – |