IR3566AMQA03TRP

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The IR3566AMQA03TRP is a DC/DC controller designed specifically for server power architectures. It is categorized as part of a class of PMIC (power management ICs) voltage regulators, and specifically DC DC switching controllers. Its wide input range of 8-45V, as well as its multiple output voltage options, make it suitable for a variety of server applications.

Application Field

The IR3566AMQA03TRP is designed to provide power regulation across a wide range of server applications. Its key feature is having the ability to accept input voltages from 8V to 45V, making it suitable for multiple server power configurations, such as 12V, 24V, and 48V systems. It also features output voltage programs, including multiple 3.3V, 5V, 12V, IEEE (point of load) voltages and Synchronous buck 12V, meaning it can be used in a multitude of different applications.

It also provides system designers the flexibility to customize ramp rates, frequency, inductor and capacitors, as well as the addition of external compensation for precise set-up. This ensures it is able to satisfy the needs of servers deployed in different setups.

Working Principle

The IR3566AMQA03TRP consists of three interrelated on-chip components. It starts with a low-voltage current mode PWM controller, which regulates the output by adjusting the duty cycle of a voltage regulating switch, such as a MOSFET. This control loop is closed by comparing duty cycle to a reference resistor, ensuring an accurate output.

The second component is the on-chip voltage monitor, which provides over-current and under-voltage protection by comparing the output voltage to an external resistor, which is typically connected to the power ground.

The third component is the on-chip linear voltage regulator, which provides a stable power supply for the electronics of the controller and also allows for the control of the start-up times.

Overall, the IR3566AMQA03TRP provides a compact and reliable package for the control of server power architectures across a wide range of applications, including 12V, 24V and 48V systems. Its on-chip voltage monitor provides over-current and under-voltage protection, while the on-chip PWM controller provides accurate regulation and its linear voltage regulator ensures stable and controllable start-up times.

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