The ISL6522CR-TR5190 is a highly integrated dual PWM (Pulse Width Modulation) controller designed for synchronous rectified buck converter applications. Manufactured by Intersil (now Renesas), it's commonly used in power supplies for computer systems and other electronic devices where efficiency and precise voltage regulation are critical. The TR5190 likely relates to the packaging and reel specifications.

Applications

• Desktop PC power supplies
• Server power supplies
• Voltage regulator modules (VRMs)
• Graphics card power supplies
• High-current buck converters

Features

• Dual PWM outputs
• Synchronous rectification
• Adjustable switching frequency
• Overcurrent protection (OCP)
• Overvoltage protection (OVP)
• Undervoltage protection (UVP)
• Power good output
• Voltage positioning
• Internal soft-start

Benefits

• High Efficiency: Synchronous rectification significantly reduces power losses compared to traditional diode rectification.
• Precise Voltage Regulation: PWM control ensures stable and accurate output voltage under varying load conditions.
• System Protection: Overcurrent, overvoltage, and undervoltage protection safeguards the power supply and connected devices.
• Design Flexibility: Adjustable switching frequency allows for optimization of efficiency and component size.
• Simplified Design: Integrated features like soft-start reduce the number of external components needed.
• Reliable Operation: Designed for stable performance in demanding environments.

Additional Details

The ISL6522CR-TR5190 provides two independent PWM control channels for generating regulated output voltages. The synchronous rectification feature replaces the traditional rectifier diodes with MOSFETs, significantly reducing power dissipation and improving efficiency. The adjustable switching frequency provides the flexibility to optimize the design for different load conditions and component choices. The controller incorporates several protection features, including overcurrent, overvoltage, and undervoltage protection, to prevent damage to the power supply and connected devices. The power good output provides an indication of the output voltage status, which can be used for system monitoring and control. The integrated soft-start function limits the inrush current during startup, preventing voltage overshoot and stress on the power supply components. The TR5190 portion of the part number is typically used to indicate the specific tape and reel packaging configuration.