What made you select the ACT41000+ACT43750REF01 as a featured product?
I am excited to feature the ACT41000+ACT43750 REF01 Reference Design this month, an RFMW-exclusive reference design that simplifies GaN RFPA biasing. RFMW’s new ACT41000+ACT43750REF01 reference design combines Qorvo’s ACT41000 RF Point-of-Load (RFPoL) regulator and ACT43750 drain-switch driver / gate bias regulator into a comprehensive, fully integrated solution for biasing GaN RFPAs—ensuring optimal performance, reliable protection, and easier system integration.
This reference design is a turnkey biasing platform for GaN RFPA designers, simplifying system development, enhancing performance consistency, and reducing risk during integration. Whether you’re designing high-efficiency transmitters or working with pulsed RF signals, this solution removes guesswork and accelerates time to market.
Download Overview sheet: Auto-Sequence/Calibration for GaN & GaAs Power Amplifiers
Request User Guide: For a copy of the ACT41000+ACT43750 REF01 User Guide, click here.
Key Benefits for Engineering Include:
Automatic Bias Sequencing
Ensures safe power-up and power-down procedures to prevent device damage—removing a critical pain point in GaN system design.
Autocalibration for Optimal Performance
Automatically finds and stores the optimal gate voltage for the desired IDQ bias current, eliminating the need for over biasing to compensate for drift.
Designed for Pulsed, High-Current Demands
Handles up to 4A with high efficiency, making it ideal for systems requiring fast transient response and high peak current loads.
Reconfigurable and Flexible
Though pre-configured for the QPA2612, the EVK can be easily reconfigured for other GaN RFPAs with voltages up to 24V/4A.
Full Evaluation Kit with GUI Control
Comes with a complete ref design board, downloadable GUI software for both ACT41000 and ACT43750, I2C to GUI interface cable, and detailed documentation including schematics, layout, BOM and user’s guide—speeding up prototyping and validation.
What are the key features/specifications of the ACT41000+ACT43750 REF01?
Key features of the ACT41000+ACT43750 REF01 include:
- Input Voltage Range: 12–40 VDC
- Output Voltage Range: 10–24 VDC
- Maximum Output Current: 4A
- Pre-configured for Qorvo QPA2612 RFPA
- Compatible with most GaN RFPAs with Vdrain < 24 VDC
- Integrated protection features
- Integrated Negative Gate Bias Regulator
- Built-in Power-Up/Power-Down Sequencing
- Automatic Gate Bias Calibration for Optimal IDQ
- Drain Pulsing Support for Radar and Pulsed RF Applications
What are common markets/applications?
- Aerospace & defense communications
- Radar systems (ground, naval, airborne)
- 5G and wireless infrastructure
- Satellite Communications
- Electronic warfare (EW)
About Kirk Barton
Kirk Barton is a Technical Marketing Manager for Power Products at RFMW. Leveraging 35 years of industry experience and a degree in Electrical Engineering, Kirk specializes in high power applications using wide bandgap technologies. Kirk enjoys being part of the RF industry’s innovative environment and witnessing the positive impact that technological advances have on integration, efficiency, and end applications.
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