TPS3128E15DBVT

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The TPS3128E15DBVT is part of Texas Instruments\' Supervisory Circuit portfolio and is a low-power reset generator with an on-chip voltage detector designed specifically for powering down portfolios with limited power budget. It replaces multiple individual reset generator and voltage detector components, thereby saving board space, cost and power consumption. This multi-function product integrates a voltage/reset comparator, power-on reset (POR), watchdog timer (WDT), reset output, and open-drain comparator output in a single package.

Application Field

The TPS3128E15DBVT is particularly useful in low-power applications such as those found in wearable and portable devices. Its features make it a great fit for these types of applications, including its high accuracy voltage-detection thresholds and reset-generation timing. It also helps reduce time to market for designs by eliminating the requirement for multiple components.

The voltage detector portion of the TPS3128E15DBVT is administered by programmable thresholds in both active- and standby-mode power domains. This allows for a precise and precise monitoring of battery levels in a connected system. It also enables higher system reliability by providing an early alert of power-fail conditions. This feature is also valuable for computers, which may experience spikes and dips in power levels during the course of their application. In this way, the TPS3128E15DBVT can detect these anomalies and allow the computer to shut down gracefully, avoiding potential data loss or corruption.

Working Principle

The TPS3128E15DBVT uses an on-chip voltage monitor, comparator and reset generator to keep track of variations in the supplied power level. When the battery level is below a predetermined level, the reset signal will be generated and applied to the system, giving the user time to investigate and shut the system down manually. This reset signal will also trigger the built-in watchdog timer to reset the system after a certain period of time and return it to its initial state.

The TPS3128E15DBVT includes a power-on reset (POR) signal, which triggers when both a voltage supervisor and voltage detected signal are detected. It also features an open-drain comparator output signal, which can be used to monitor power supply stability. Additionally, it is designed to be compatible with TI\'s Battery Stack Monitor (BSM) technology, allowing for higher precision power detection and reporting.

The TPS3128E15DBVT also provides a list of reset timing options to meet the needs of various applications. It can output reset signals with a pulse duration of up to 10s, and pulse start delays of 0s to16s. This allows it to be used as both a normal reset device, and a more advanced reset generator, which provides more sophisticated feedback in case of power problems.

Conclusion

The TPS3128E15DBVT is an ideal power monitoring tool for low-power applications. Its programmable reset and voltage detector thresholds, as well as its reset timing options, make it a great choice for monitoring battery and power supply levels in both computers and portable devices. Additionally, its built-in features such as open-drain comparator output signals and compatibility with TI\'s Battery Stack Monitor (BSM) technology provide further control of the system and improved reliability.

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