Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PMIC - Supervisors: Application Field and Working Principle

PMIC (Power Management IC) supervisors, also referred to as voltage monitors, provide supply voltage supervision for embedded systems. The XC6121C521ER-G is a low-power CMOS voltage supervisor designed for use in systems requiring multiple-level voltage supervision. This document describes the XC6121C521ER-G application field and working principle.

Application Field

The XC6121C521ER-G is a small, low-power CMOS voltage supervisor with a large operating voltage range (2.2V to 70V) and on-chip reference-style alarms, making it ideal for low-power systems. Its built-in watchdog timer and reset command logic also make it suitable for fixed-rate/fixed-time applications. Additionally, its integrated error detection circuitry means it can detect undervoltage and overvoltage conditions, as well as a high voltage alarm. Therefore, it can provide additional protection and monitoring capabilities in a wide range of embedded systems.

Working Principle

The XC6121C521ER-G works by monitoring a single power supply voltage, or two distinct power supply voltages. When a monitored voltage falls outside of its predetermined range, as detected by an integrated reference detector, the reset logic is activated, triggering an active low voltage monitor output. This output is a logic-level reset (LVR) signal, intended to reset the microcontroller and other logic peripherals.

The XC6121C521ER-G also includes an integrated watchdog timer. When left inactive, the timer will trigger a Reset command output (RCO) after a certain delay, which can range from 0.5 seconds to 8 seconds. This timer has a watchdog response (WO) output, which can be used to reset the system if an interrupt does not occur.

Additionally, the XC6121C521ER-G features a high voltage alarm (HVA) output that can be used to flag an overvoltage or undervoltage condition. The HVA output can be set up to span from 2.2V to 70V, making it an ideal solution for monitoring high-voltage applications.

Conclusion

Overall, the XC6121C521ER-G is an ideal solution for multi-voltage monitoring applications. Its reliable voltage monitoring, integrated watchdog timer and reset command logic, and wide operating range make it ideal for low-power and high-voltage applications. Furthermore, its integrated error detection circuitry provides additional protection against undervoltage and overvoltage conditions, making it an excellent choice for reliable voltage monitoring in embedded systems.

The specific data is subject to PDF, and the above content is for reference