The SI82390CD-IS is an isolated gate driver manufactured by Skyworks Solutions Inc. Like other members of the SI8239x family, it is designed to drive power MOSFETs and IGBTs, providing galvanic isolation between the control circuitry and the high-power switching elements. This isolation enhances safety and reduces noise coupling in power conversion applications.

Applications

• Power Supplies: Used in isolated power supplies for driving switching transistors.
• Motor Control: Provides isolated gate drive for motor control applications.
• Inverters: Used in solar inverters and UPS systems for driving power transistors.
• Industrial Automation: Isolates control signals in industrial drives and automation equipment.
• Medical Devices: Ensures safety in medical equipment by isolating high-voltage sections.

Features

• Galvanic Isolation: Provides robust electrical isolation between the input and output sides.
• High CMTI: High Common-Mode Transient Immunity, ensuring stable operation in noisy environments.
• Integrated Dead-Time Control: Prevents shoot-through in half-bridge and full-bridge configurations.
• Adjustable Dead Time: Allows optimization of dead time for specific applications.
• UVLO Protection: Under-Voltage Lockout protection to prevent damage during power-up and power-down.

Benefits

• Enhanced Safety: Galvanic isolation enhances safety by preventing high-voltage hazards.
• Improved Noise Immunity: High CMTI ensures reliable operation in noisy environments.
• Increased Efficiency: Adjustable dead-time control optimizes switching efficiency.
• Protection: UVLO protection safeguards the driver and power transistors.
• Simplified Design: Integrated features simplify circuit design and reduce component count.

Additional Details

The SI82390CD-IS leverages capacitive isolation technology for its robust isolation barrier. Similar to the SI82390AD-IS, the adjustable dead-time feature is present, which allows tailoring the switching characteristics for efficiency and reduced switching losses. The CD suffix likely indicates specific performance characteristics or features relative to other family members. Design considerations include isolation voltage, propagation delay, peak output current, and the dead-time adjustment range. Consult the datasheet for precise specifications and application guidance.