IRU1176CPTR

IRU1176CPTR Application Field and Working Principle

IRU1176CPTR is a multi-channel integrated regulator manufactured by Infineon, which belongs to Infineon Intelligent Regulator, a leader in linear regulation solutions. This fully integrated IC provides a stable, low-noise 5V output with wide range high efficiency 5V-11V input voltage. It is ideal for applications such as communications and data processing equipments, automotive systems, industrial areas and industrial process control.

IRU1176CPTR is a fully integrated voltage regulator providing a high efficient, low-noise, linear regulation solution. It is based on an innovative architecture that combines a DC/DC converter, a linear regulator and an integrated Power Management IC (PMIC) in a single IC package. The IC integrates an additional low-dropout (LDO) regulator controller block, which provides the necessary protection for the whole system.

IRU1176CPTR Features

• Wide input voltage range from 5V to 11V
• High efficiency up to 90%
• Low dropout voltage as low as 20mV
• Low output voltage noise
• Integrated control for DC/DC converter, linear regulator and LDO regulator
• Integrated short circuit and over-current protections
• Self protection against junction temperature

IRU1176CPTR Working Principle

The IRU1176CPTR operates in two stages: DC/DC converter and linear regulator. In the first stage, the DC/DC converter operates as a synchronous buck regulator. This converter receives the input voltage and converts it to the desired output voltage. At the same time, the converter provides a regulated output voltage with different load conditions and step load changes. The second stage consists of a linear regulator. This regulator clean-up the voltage ripple generated by the DC/DC converter, reducing the output voltage noise. The LDO regulator provides an additional low-dropout supply for power-critical applications.

The IRU1176CPTR contains an integrated PMIC, which provides the necessary protection for the whole system. The PMIC monitors the load current and adjusts the output voltage accordingly. Additionally, it features current trim and enable features, over-current protection, temperature monitoring and control, and fault protection.

Conclusion

The IRU1176CPTR is a perfect choice for applications requiring high efficiency, low noise, and wide input voltage range. It is suitable for communications and data processing equipments, automotive systems, industrial areas and industrial process control. The integrated PMIC provides the required protection, ensuring a reliable and stable operation.