The IR3475MTRPBF is a synchronous buck regulator from Infineon Technologies, designed for high-efficiency point-of-load power conversion. It integrates control circuitry and MOSFETs into a single package to minimize board space and component count.

Applications

• Point-of-Load (POL) DC-DC Converters
• Server and Datacenter Power Supplies
• Networking Equipment
• FPGA and Microprocessor Power Rails
• Embedded Systems

Features

• Integrated MOSFETs
• Synchronous Rectification
• Adjustable Output Voltage
• Overcurrent Protection
• Overtemperature Protection
• Enable Input
• Power Good Output
• Small Footprint

Benefits

• High Efficiency Reduces Power Dissipation
• Compact Design Saves Board Space
• Simplified Design and Layout
• Robust Protection Features Enhance System Reliability
• Adjustable Output Voltage Provides Flexibility

Specifications

The IR3475MTRPBF typically operates from an input voltage range of 4.5V to 16V and provides an adjustable output voltage down to 0.6V. It is capable of delivering a continuous output current of several amperes (typically 6A-8A), depending on the specific application conditions and thermal management. The switching frequency is adjustable, allowing optimization for efficiency or transient response. The device incorporates overcurrent protection (OCP), overtemperature protection (OTP), and undervoltage lockout (UVLO) to safeguard the regulator and the load. It is available in a compact QFN package for efficient thermal dissipation and space saving. The switching frequency is typically in the range of 200kHz to 1MHz. The output voltage is typically programmed by external resistors.

The IR3475MTRPBF's integration of MOSFETs simplifies the design process and reduces the bill of materials. The synchronous rectification significantly improves efficiency compared to traditional diode-based buck regulators, particularly at low output voltages. The adjustable output voltage provides flexibility to support a wide range of load requirements. The protection features ensure robust operation and prevent damage to the regulator and the load in the event of a fault. The compact QFN package allows for high-density designs.