A single-channel, galvanically isolated gate driver named the IX3407B was released by Littelfuse. Its purpose is to simplify system design and provide high-speed switching performance in high-voltage power applications.
New single-channel driver with 2.5 kV capacitive isolation enhances power density, speeds switching, and boosts reliability for motor drives, inverters, and industrial power supplies.
The IX3407B gate driver incorporates Littelfuse’s exclusive 2.5 kV capacitive isolation technology for strong signal integrity and safety, and it provides up to 7 A peak source and sink output current through separate output pins.
It enables efficient and reliable operation across a broad range of switching frequencies and temperatures thanks to its quick propagation delays, high Common Mode Transient Immunity (CMTI), and improved thermal stability.
Key Features and Benefits
- 7 A typical peak source/sink current with separate output pins for precise gate control
- 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 MOSFETs and IGBTs
Leadership Comments
“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.
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.
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
Availability
The IX3407B is 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, CLICK HERE.
