Allegro MicroSystems AHV85110 Isolated GaNFET Gate Drivers
Allegro MicroSystems AHV85110 Isolated GaNFET Gate Drivers are self-powered single-channel isolated drivers. These gate drivers are designed to drive GaNFETs in multiple applications and topologies. The AHV85110 drivers feature a 10.5V to 13.2V supply voltage range, 8.4mm creepage distance, enable pin with fast response, and 2.8Ω pull-up and 1Ω pull-down separate drive output pins. The AHV85110 gate drivers include a 50ns propagation delay and high peak source/sink capability to drive GaN FETs in high-frequency designs efficiently. These gate drivers are available in compact, low-profile, surface mount 10mm x 7.66mm x 2.41mm NH package. The AHV85110 gate drivers are ideal for EV chargers, On-Board Charger (OBC), AC-DC and DC-DC converters, transportation, robotics, micro-inverters, solar, industrial, and clean energy.
The AHV85110 gate drivers include an isolated output bias supply integrated into the driver, eliminating the need for an external gate drive auxiliary bias supply or high-side bootstrap. The gate drivers consist of fast propagation delay and high peak source/sink capability to efficiently drive GaN FETs in high-frequency designs.
Features
- Transformer isolation barrier
- Power-thru integrated isolated bias:
- No need for high-side bootstrap
- No need for external secondary-side bias
- AEC-Q100 grade 2 qualification
- 50ns propagation delay
- Separate drive output pins:
- 2.8Ω pull-up
- 1Ω pull-down
- 10.5V < VDRV <13.2V supply voltage
- Undervoltage lockout on primary VDRV and secondary VSEC
- Enable pin with fast response
- Continuous ON capability—no need to recycle IN or recharge the bootstrap capacitor
- CMTI > 100V/ns dv/dt immunity
- 8.4mm creepage distance
- 10mm x 7.66mm x 2.41mm package dimensions
- Safety regulatory approvals:
- 5kVRMS VISO per UL 1577
- 8kVpk VIOTM maximum transient isolation voltage
- 1kVpk maximum working isolation voltage
Applications
- AC-DC and DC-DC converters:
- Totem-pole PFC
- LLC half-/full-bridge
- SR drive
- Multi-level converters
- Phase-shifted full-bridge
- Automotive:
- EV chargers
- On-Board Chargers (OBC)
- Industrial:
- Data center
- Transportation
- Robotics
- Audio
- Clean energy:
- Micro-inverters
- String-inverters
- Solar
Typical Application Diagram
Block Diagram
Videos
Additional Resources
- Minimizing PCB Parasitic Effects
- Design And Application Guide For AHV85110
- FET GATE Drive And Biopolar Output
- Power Up Your Performance Brochure
- The Power of Simplicity Brochure
- Simplify Power Module Design with Power-Thru Technology Blog
- Solving the Challenges of Increasing Power Density by Reducing Number of Power Rails Blog
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