The IR2238Q is a high-voltage, high-speed power MOSFET and IGBT driver with overcurrent protection. It is designed to drive two independent high-side and low-side channels. The device incorporates a variety of features to simplify power supply design and improve system reliability.

Applications

• Motor Drives
• Power Supplies
• Uninterruptible Power Supplies (UPS)
• Welding Inverters
• Induction Heating

Features

• Floating Channel Designed for Bootstrap Operation
• Gate Drive Supply Range: 10 V to 20 V
• Logic Input Compatibility: 3.3 V to 5 V
• Overcurrent Protection
• Shoot-Through Protection
• Under-Voltage Lockout (UVLO)
• CMOS Schmitt-triggered Inputs with Pull-down

Benefits

• Simplified Gate Drive Circuitry
• Improved System Efficiency
• Enhanced System Reliability
• Protection against Overcurrent and Short Circuits

Specifications

The IR2238Q has a typical gate drive voltage range of 10V to 20V, enabling it to drive a wide range of MOSFETs and IGBTs. The logic inputs are compatible with both 3.3V and 5V logic levels. The overcurrent protection (OCP) feature protects the power devices from excessive current flow. The shoot-through protection prevents both high-side and low-side MOSFETs from being turned on simultaneously, preventing a short circuit. The undervoltage lockout (UVLO) ensures that the driver only operates when the supply voltage is sufficient, preventing damage to the power devices. The propagation delay is typically in the range of tens of nanoseconds. The operating temperature range is generally from -40°C to +125°C. The output current capability is typically around 0.5A to 1A.

The IR2238Q's floating channel design allows for bootstrap operation, simplifying the high-side gate drive circuitry. The overcurrent protection (OCP) feature is crucial for protecting the power devices in the event of a fault. The shoot-through protection enhances system reliability by preventing short circuits. The UVLO feature ensures proper operation and prevents damage to the power devices. It is frequently used in motor control and power supply applications that require high efficiency and reliability.