IR3473MTRPBF

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The IR3473MTRPBF is a compact, high-performance non-synchronous buck regulator with robust, integrated MOSFETs shielded by a high-efficiency graphite coating. It is perfect for providing stable and reliable power supplies for both consumer and industrial electronics applications. The power regulator features adjustable output voltage, efficient current and power regulation, low noise operation, and wide input voltage range. In addition, it includes a power-saving, high-efficiency controller, overcurrent protection, and short-circuit protection.

Application Field of IR3473MTRPBF

The IR3473MTRPBF is specifically designed for low-voltage, high-performance power supplies, making it ideal for applications such as PoE/PoE+ switches and injectors, Ethernet over coax (EoC) power supplies, base station power supplies, amplifier power supplies, Wi-Fi access points and routers, audio power amplifiers and USB power adapters. The power regulator has a wide input voltage range from 4V to 24V, and can provide an adjustable output voltage from 0.6V to 3.3V. It is designed for a wide temperature range of -40°C to +150°C, making it suitable for a variety of industrial, automotive and consumer applications.

Working Principle of IR3473MTRPBF

The IR3473MTRPBF is a non-synchronous buck regulator regulated by a high-efficiency current mode PWM controller. This converter uses two integrated MOSFETs to provide a low-loss, energy-efficient conversion process. It operates by connecting an input voltage source to an adjustable buck regulator, which reduces the voltage and increases the current, thereby providing a stable, low-noise output voltage. The IR3473MTRPBF also includes overcurrent protection, thermal protection and short-circuit protection to ensure reliable performance.

At the beginning of the conversion process, the power regulator high-side FET is turned on, allowing current to flow from the input voltage source to the output voltage. The low-side MOSFET then turns on, allowing the output current to flow in the opposite direction. This creates a voltage drop between the input and output, supplying the desired output voltage. As the output voltage increases, the high and low-side FETs adjust their gate voltages accordingly to maintain an output current proportional to the load current. This ensures a continuous and stable output voltage throughout the entire conversion process.

The IR3473MTRPBF also features a wide input voltage range of 4V to 24V and a high output current of up to 2.5A. This makes it ideal for power supplies that require stable operation even in extreme conditions. Additionally, the power source can be adjusted via integrated load-line and compensation circuitry, allowing the output voltage to be set to a precise value required for the application. The power regulator is also equipped with a high-efficiency current mode PWM controller, which allows for a low noise operation and a high efficiency even at light loads.

Conclusion

The IR3473MTRPBF is a high-performance, non-synchronous buck regulator designed for low-voltage, high-performance power supplies. It is perfect for applications such as PoE/PoE+ switches and injectors, Ethernet over coax (EoC) power supplies, base station power supplies, audio power amplifiers and USB power adapters. The power regulator features adjustable output voltage, efficient current and power regulation, low noise operation, and wide input voltage range. Finally, it includes a power-saving, high-efficiency controller, overcurrent protection, and short-circuit protection.

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