TPS3823-30DBVRG4

PMIC - Supervisors

The TPS3823-30DBVRG4 is a single channel supervisor IC targeted at system-level primary side power rail monitoring. It is ideal for applications requiring system reset, chip enable, specific data input latching, and early warning of potential system events. The device is capable of detecting power up, power down, output over voltage, and output under voltage conditions, making it well suited for a variety of different monitoring applications.

The TPS3823-30DBVRG4 is a field-programmable IC which allows for customization of key parameters such as power up and power down thresholds, reset timeout intervals, and monitoring time periods. It is optimized to accommodate a variety of system specific needs, making it a great fit for a wide range of applications.

Features of the TPS3823-30DBVRG4

• 30V maximum rated input voltage.
• Selectable power-up and power-down thresholds.
• Selectable reset timeout intervals.
• Selectable monitoring time periods.
• On-chip temperature-sensing capability.
• On-chip reset de-assertion delay.
• On-chip power-on reset generation.
• On-chip low-power detection.
• On-chip clamping protection.
• On-chip overtemperature protection.
• Soft start and soft load command.
• Built-in overvoltage protection.

Application Fields

The TPS3823-30DBVRG4 is well suited for a wide range of monitoring applications including: high-current battery charging systems; Active Power Factor Correction (PFC); high-current motor drives; automotive HVAC systems; automotive power systems; telecommunication power systems; and many other industrial power systems.

The TPS3823-30DBVRG4 is also suitable for other specialized monitoring applications such as power-supply redundancy and backup, data logging, and system-level functionality monitoring.

Working Principle

The TPS3823-30DBVRG4 is a single-input primary-side power rail supervisor IC. It has a selectable power-up threshold (V[[SPLIT]]up) and a selectable power-down threshold (V[[SPLIT]]down). The reset assert time (T[[SPLIT]]a) is programmable to detect an output overvoltage or an output undervoltage condition and to assert a reset signal. When the output voltage reaches the V[[SPLIT]]down value, the TPS3823-30DBVRG4 will assert a reset signal and hold it active for the programmed reset timeout interval (T[[SPLIT]]d), at which point the reset signal will be de-asserted. The device also features a power-on reset generation circuit for protection against power-on reset transients.

The TPS3823-30DBVRG4 also features on-chip power monitoring to detect an output undervoltage or overvoltage condition. The device can monitor the voltage on the power rail for a period of up to 30 seconds (T[[SPLIT]]s) in order to detect a power-down or power-up event. If the power rail voltage rises above the V[[SPLIT]]up value or falls below the V[[SPLIT]]down value, the TPS3823-30DBVRG4 will assert a reset. The device also features on-chip temperature monitoring, on-chip clamping protection, and on-chip overvoltage protection.

Conclusion

The TPS3823-30DBVRG4 is a single-channel supervisor IC targeted at system-level primary side power rail monitoring. The device is well suited for a variety of applications including battery charging systems, motor drives, HVAC systems, and power supply redundancy. Its features include selectable power-up and power-down thresholds, selectable reset timeout intervals, selectable monitoring time periods, on-chip temperature-sensing capability, on-chip reset de-assertion delay, on-chip power-on reset generation, on-chip low-power detection, on-chip clamping protection, and on-chip overtemperature protection.