STWD100NPWY3F Integrated Circuits (ICs)

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As more and more corporate bodies realize the need to implement power management, controllers and supervisors are required to ensure proper and safe power management on a broader scale. The STWD100NPWY3F is a well-known Power Management Integrated Circuit (PMIC) supervisory developed by STMicroelectronics.

This supervisor is designed to monitor and maintain the normal operating parameters of power supplies and other power management applications. The STWD100NPWY3F is part of ST’s STWD100 family of supervisors, as a single-channel rail-to-rail power supply supervisor and monitoring integrated circuit. It integrates a low-cost precision voltage reference, a wide input voltage range voltage comparator, and a reset signal generator. It offers a high accuracy voltage reference (1.25V), along with other features like watchdog timer and programmable reset delay.

Application fields

The STWD100NPWY3F is specifically tailored for power management applications, for applications such as power regulating/level shifting, watchdog/reset monitoring, and power supply/battery supervision. It can be used in various power-sensitive systems, such as servers, routers, network, switches, and other networking applications.

In level-shifting circuits, the STWD100NPWY3F can be used to provide an accurate reference voltage, enabling the monitoring of differential voltage thresholds. It can be used in power-sensitive systems, providing output signals to controllers, regulating power supply, thus optimizing the system parameters. Also, the integrated watchdog and reset delay timers help reduce the overhead related to software errors.

Working Principle

The STWD100NPWY3F consists of two main blocks, the voltage comparator and the reset signal generator. The voltage comparator consists of a low voltage reference, an internal voltage divider, and a wide input voltage range. This comparator can monitor input voltages, and provide an output when the level of the monitored voltage goes below and above a certain threshold.

The second block of the STWD100NPWY3F is the reset signal generator, which creates a reset signal at a specific voltage level. The user can program the reset delay, up to 100ms, to ensure that the output voltage has enough time to become stable and the reset signal is generated at the right time. The watchdog timer prevents any potential unwanted condition in powered systems by resetting the system at pre-defined intervals.

In conclusion, the STWD100NPWY3F is a power management integrated circuit supervisor that offers an integrated circuit for monitoring power supplies and other power management applications. It offers a high accuracy voltage reference and other features such as watchdog timer, programmable reset delay and a wide input voltage range voltage comparator. The STWD100NPWY3F is specifically tailored for power management applications, enabling the monitoring of differential voltage thresholds, providing output signals to controllers, and optimizing the system parameters.

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