Bourns has introduced the MAG-3002176 high-frequency transformer and MAG-3002177 power inductor for 600 W single-phase cycloconverter designs based on gallium-nitride power switches.
Developed for Texas Instruments’ TIDA-010954 reference design, the custom magnetic components address compact, bidirectional power conversion for renewable-energy and battery-storage equipment.
The two components – transformer and power inductor are intended to work together in high-frequency, single-stage converter architectures, where magnetic losses, winding resistance and isolation capability strongly influence achievable efficiency and power density.
Key features and benefits
- Designed for the Texas Instruments TIDA-010954 600 W GaN-based cycloconverter reference design
- Supports high-frequency single-stage conversion, helping reduce the size of magnetic components compared with lower-frequency alternatives
- MAG-3002176 transformer is specified for operation from a 60 VDC-side interface to a 230 VAC-side interface
- Transformer operating-frequency range is 300 kHz to 600 kHz
- MAG-3002177 inductor combines low DC resistance with a high saturation-current capability for low-loss high-current operation
- The magnetic set supports converter efficiency above 96 percent in the referenced application architecture
- Both parts are RoHS compliant
- Components are available as engineering samples and may be customized for application-specific electrical and mechanical requirements
Components at a glance
| Parameter | MAG-3002176 | MAG-3002177 |
|---|---|---|
| Component type | High-frequency power transformer | Power inductor |
| Intended topology | Bidirectional GaN single-stage cycloconverter | Single-stage inverter/cycloconverter |
| Reference platform | TI TIDA-010954 | TI TIDA-010954 |
| Operating frequency | 300 kHz to 600 kHz | According to manufacturer datasheet |
| Main voltage context | 60 VDC to 230 VAC | Used within the converter power stage |
| RoHS status | Compliant | Compliant |
MAG-3002176 transformer technical highlights
The MAG-3002176 is a power transformer for high-frequency, bidirectional conversion between a low-voltage battery-side bus and an AC-side interface. Its specified 2:7 turns ratio is aligned with the voltage transformation requirements of the TI 600 W GaN cycloconverter architecture.
| Electrical characteristic at 25 °C | MAG-3002176 value |
|---|---|
| Magnetizing inductance | 7.6 µH ±10% |
| Leakage inductance | 160 nH typical |
| Primary-side DCR, pins 1,2 to 3,4 | 2.6 mΩ maximum |
| Secondary-side DCR, pins 5,6,7 to 8,9,10 | 15 mΩ maximum |
| Turns ratio | 2:7 ±5% |
| Winding hi-pot | 3000 VAC for 1 second at 1 mA maximum |
| Core hi-pot | 1500 VAC for 1 second at 1 mA maximum |
The specified leakage inductance is particularly relevant in resonant and soft-switching power stages, where it can contribute to commutation behavior and switching-current shaping. Designers should nevertheless use the complete reference-design information and component datasheet when validating resonant behavior, device-voltage stress and EMI performance.
The 3000 VAC winding hi-pot rating indicates a substantial insulation test capability between windings. It is an electrical production or qualification test value, however, rather than a complete substitute for an end-equipment insulation-coordination assessment covering creepage, clearance, pollution degree and applicable safety standards.
MAG-3002177 inductor technical highlights
The MAG-3002177 is a low-resistance power inductor intended for the same 600 W single-stage conversion platform. It provides nominal inductance of approximately 3.2 µH while carrying the high current associated with the converter power stage.
| Electrical characteristic at 25 °C | MAG-3002177 value |
|---|---|
| Inductance at 0 ADC | 3.2 µH |
| Inductance at 20 ADC | 3.24 µH typical |
| DCR | 7.63 mΩ typical |
| Hi-pot rating | 1000 VAC for 1 second at 5 mA maximum |
The close inductance values specified at zero current and 20 A DC suggest that the inductor is designed to retain its nominal inductance under the stated bias condition. For converter engineers, this helps maintain predicted current ripple and control-loop behavior at substantial operating current.
Its 7.63 mΩ typical DCR is important because copper loss rises with the square of current. At high current, even a few milliohms can become a meaningful thermal design factor, making PCB copper area, airflow and mounting conditions relevant to final converter performance.
Typical applications
Bourns identifies the magnetic components for renewable-energy and energy-storage equipment, including:
- Microinverters
- Central solar inverters
- Solar arc-protection systems
- Portable battery-storage systems
- Bidirectional battery interfaces
- High-frequency isolated power stages based on GaN switches
The target use case is not a general-purpose line-frequency transformer application. These parts are engineered around a specific high-frequency, 600 W single-phase cycloconverter architecture, so suitability should be confirmed before use in a different topology, power level or switching-frequency range.
Design-in notes for engineers
- Treat the pair as architecture-specific magnetics. The transformer turns ratio, magnetizing inductance and leakage inductance should be assessed against the intended modulation method, switching frequency and soft-switching operating window.
- Validate thermal performance in the final assembly. DCR values are specified at 25 °C, while copper resistance increases as the windings heat in operation.
- Confirm current waveforms, not only RMS current. Peak current, ripple current and transient saturation margin are particularly important for the MAG-3002177 inductor in a high-frequency GaN power stage.
- Check insulation requirements at equipment level. The transformer’s hi-pot ratings provide useful electrical information, but end-product compliance depends on the complete insulation system and applicable standard.
- Manage high-frequency parasitics. At 300 kHz to 600 kHz, PCB layout, winding-to-winding capacitance, common-mode current paths and filtering strategy can materially affect conducted and radiated EMI.
- Use official design documentation. The TI TIDA-010954 reference design and Bourns datasheets should be reviewed for circuit conditions, layout guidance and component-specific limits before committing to production.
- Engage Bourns for variants. The manufacturer states that both magnetic components can be customized, which may be useful where insulation, inductance, DCR, mounting or thermal requirements differ from the reference platform.
Source
This article is based on Bourns’ August 2026 product release covering the MAG-3002176 transformer and MAG-3002177 inductor for the Texas Instruments TIDA-010954 600 W GaN-based single-phase cycloconverter platform.
