Littelfuse, Inc. (NASDAQ: LFUS), a diversified industrial technology manufacturing company empowering a sustainable, connected, and safer world, today announced the release of the IX3407B, a single-channel, galvanically isolated gate driver designed to deliver high-speed switching performance and simplified system design in high-voltage power applications. (View the video.)
The IX3407B gate driver delivers up to 7 A peak source and sink output current through separate output pins and integrates Littelfuse’s proprietary 2.5 kV capacitive isolation technology for robust signal integrity and safety. It provides fast propagation delays, high Common Mode Transient Immunity (CMTI), and enhanced thermal stability, enabling efficient and reliable operation across a wide range of switching frequencies and temperatures.
“With the IX3407B, our customers can design safer, more compact, and more efficient power systems,” said June Zhang, Product Manager, Integrated Circuits Division at Littelfuse. “The IX3407B will help companies accelerate their time to market while reducing total system cost in the growing markets of solar inverters, motor drives, industrial automation, and high-efficiency UPS systems.”
The IX3407B addresses the challenge of interfacing low-voltage logic with high-voltage power devices by providing galvanic isolation between control and driver stages without the need for bulky optocouplers or transformer-based isolation. This integration reduces board space, component count, and system complexity—while offering greater design flexibility and long-term reliability.
Key Features and Benefits
- 7 A typical peak source/sink current with separate output pins for precise gate control
- 2.5 kVrms capacitive isolation ensures robust electrical separation and fast signal transmission
- TTL/CMOS logic compatibility (3.3 V thresholds) with input voltage tolerance up to VCC
- Active Shutdown (ASD) and Under Voltage Lockout (UVLO) safeguard against fault conditions
- High CMTI rating of 150 kV/µs supports high-noise industrial environments
- Wide output supply range (13 V to 35 V) for flexibility across Si / SiC MOSFETsand IGBTs
Target Applications
The IX3407B is ideal for a wide range of industrial and renewable energy applications, including:
- AC and brushless DC motor drives
- Solar inverters and energy storage systems
- High-voltage DC/DC converters
- LLC and totem-pole PFC power stages
- Induction heating systems, welders, and uninterruptible power supplies (UPS)
- Building and factory automation systems
By replacing traditional optocoupler-based solutions, the IX3407B delivers superior performance, smaller footprint, and lower system cost, making it a compelling choice for engineers designing the next generation of high-efficiency power systems.
Availability
The IX3407Bis available in an SOIC-8 WB (wide bodied) package in tape and reel format (3,000/reel). Submit sample requests through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit Littelfuse.com.
For More Information
Additional information is available on the IX3407B Capacitive Isolated Gate Driver product page. Require technical support? Please visit the Littelfuse website or reach out directly to:
- Simon Foley, Product Marketing Manager, Integrated Circuits Division (SBU): Sfoley@Littelfuse.com;
Tony Konopka, Product Marketing Engineer, Integrated Circuits Division (SBU): AKonopka@littelfuse.com
