XC6121D345MR-G

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Power management integrated circuits (PMICs) are indispensable in modern electronic systems, increasingly capable of complex processing tasks with more and more cores, memory and other peripherals. Supervisory PMICs allow safeguarding against system failure by monitoring voltage and temperature. It’s often set to reset the safety protection parameter before abnormality occurs, It also can prevent user’s system from unpredictable shutdown or wrong issue caused by temporary power supply drop. For example, the XC6121D345MR-G is a popular one such device, used in a wide range of electronic systems from mobile devices to industrial Power over Ethernet (PoE) systems.

Application Field of XC6121D345MR-G

XC6121D345MR-G is an advanced power management IC (PMIC). It provides protection of power management system and system power supply, as well as cost-effective, low power solution for industrial PoE systems. It has wide application field, such as netcomm, telecom, smart grid, automotive, industrial, medical and consumer. The features of it are high current threshold accuracy, low power consumption, fast wake up time, wide system compatibility and high quality.

XC6121D345MR-G range current protection and temperature protection together by monitoring the precision current, voltage and temperature. It’s often applied in industrial PoE system, such as fire detector, gate controller,access controller, remote control, industrial monitor, environment monitoring, POS terminal, base station and so on.

Working Principle of XC6121D345MR-G

XC6121D345MR-G provides monitoring and protection functions for supply voltage and temperature, these functions are achieved by using an analog-to-digital converter. It detects system currents up to 16A and output voltage up to 30V, respectively. The temperature protection of XC6121D345MR-G is integrated into the device, and it can provide protection above the factory-programmed high-temperature threshold. After the temperature exceeds that level, the device will either reset, shutdown or interrupt the power supply depending on the settings.

XC6121D345MR-G can detect faults in the system, such as overcurrent, over voltage, over temperature, power supply undervoltage, etc. When one of these faults is detected, the chip will take appropriate action to keep the system safe. It will, for example, reset the system power system or disable the power, or force a switchable load to disconnect and supply a fault report. This integrated protection allows customers to design their power management system and to reduce the development risk & ensure the reliable operation of the system and user’s safety.

Advantage of XC6121D345MR-G

One major advantage of XC6121D345MR-G is its low power consumption. The device operates between 3.3V~5.5V anddraws only 1.4uA in its standby state. This low quiescent current helps in cutting overall system power consumption. XC6121D345MR-G also comes with a low power monitoring mode, which can support a low-power supply system for high-accuracy current, voltage, and temperature monitoring.

XC6121D345MR-G also is designed with a proprietary protection system to guarantee secure operation even when the user’s system fail. It is protected from multiple fault events such as over voltage, under voltage and over current, etc. It also incorporates an adjustable carbon dioxide concentration value, enabling the application to accurately control the air quality of the network environment. When the set gas concentration value is exceeded, it will take action to shut down the system.

XC6121D345MR-G also provides a precise and low power CPU Clock output, which is an important point for many power system design. The default voltage master clock is 1.2V, and it’s also adjustable to 1.8V or 2.5V as required. The advantage of XC6121D345MR-G here is its small jitter, usually within 50ps, which makes it suitable for use in audio applications with strict noise control requirements.

Conclusion

XC6121D345MR-G is a specialized power management integrated circuit, designed for supervising and protection of power management systems and system power supplies. It is commonly used in industrial PoE systems due to its high current threshold accuracy, low power consumption and fast wake up time. It also provides adjustable carbon dioxide concentration value, low power monitoring as well as clock output, which makes it a great choice for many different applications.

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