IRU1075CMTR

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When selecting voltage regulators (VRs) for power management, engineers must decide whether to use off-the-shelf devices, or special-purpose ICs. IRU1075CMTR is an example of a special-purpose device, and this article provides a detailed overview of its application field and working principle.

Overview of IRU1075CMTR

IRU1075CMTR is a special-purpose voltage regulator designed by Infineon. It is part of the company\'s RHEON series, which offer high-current devices with a wide range of voltages. This device is a cost-effective fully-integrated DC/DC converter that can be used in a variety of scenarios. It is capable of operating from 0.8V to 5.5V and includes high-performance features that make it suitable for high-power applications. It is also designed for automotive environments, and is capable of delivering 6A of continuous current with 50mV ripple.

Application Fields

Because of its wide range of voltages, IRU1075CMTR is suitable for various applications. First, it is an ideal choice for automotive systems, such as powertrain, infotainment, body electronics, ADAS systems, and LED lighting. Additionally, it is suitable for a variety of industrial applications, such as metering and process control. It is also suitable for portable and machine-to-machine (M2M) applications.

Advantages

IRU1075CMTR offers some advantages over other regulators. For example, it is designed to sense the current load and adjust the output voltage accordingly. This feature is useful for reducing power consumption, since it allows the regulator to automatically adjust the output voltage to maximize efficiency. Additionally, it supports 4.5V to 5.5V input voltage, making it suitable for applications where there are higher input voltages. Moreover, it includes a UVLO Lockout feature, which prevents the device from operating if the input voltage is too low. This helps protect the device from damage.

Working Principle

IRU1075CMTR follows a buck-boost converter topology, which is a type of DC/DC converter that allows the output voltage to be higher or lower than the input voltage. This converter topology is ideal for applications that need a high degree of flexibility in voltage output. In this converter topology, the output voltage is determined by the duty cycle of the switching frequency. A pulse-width-modulation (PWM) circuit generates the switching frequency, and it is adjusted by the voltage-loop control algorithm based on the output voltage and the current load. Furthermore, two error amplifiers are used for feedback regulation. One is used to regulate the output voltage, and the other is used to monitor the input current during start-up.

Conclusion

IRU1075CMTR is an example of a special-purpose voltage regulator designed by Infineon. It is ideal for high-power applications, such as those in automotive and industrial applications. It is also capable of sensing the current load and adjusting its output voltage accordingly. In addition, it follows a buck-boost converter topology and uses pulse-width-modulation and error amplifiers for feedback regulation. All these features make the IRU1075CMTR a cost-effective and efficient choice for many applications.

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