TPS3110K33DBVTG4

PMIC - Supervisors: TPS3110K33DBVTG4 application field and working principle

Texas Instruments\' TPS3110K33DBVTG4 device is a low-voltage supervisor with two voltage thresholds. It monitors two user-adjustable threshold levels, and when either of these thresholds is exceeded the appropriate threshold output pins are asserted. There are two uncommitted open-drain outputs for driving low-side power switches for each of the monitored supplies. The open-drain outputs have a wide operating area, from 0.8V to 5.5V.

The TPS3110K33DBVTG4 takes an Unregulated voltage from 0.5V to 5.5V, input at the VINV pin. It uses an internal control loop to regulate the output of its integrated regulator to about 0.8V below the selected threshold voltage (VH1, VH2) and does not need an external reference voltage. This device is typically used for monitoring power supplies used in communication and embedded controller applications.

The TPS3110K33DBVTG4 is also ideal for tracking one or two system-level voltages and issuing an interrupt to the system processor as appropriate. These interrupts can be actuated with both an interrupt flag output (INT) and a System Management Interrupt (SMI) or Wake-up signal output (WU). In this way, the system processor can be insulated from direct interaction with external 2.5V and 3.3V supplies.

The TPS3110K33DBVTG4 has very low operating current of less than 0.5μA and high accuracy of ±1.5% over its operating temperature range. This accuracy guarantees that the device can effectively monitor many different voltage levels. It also offers excellent output regulation accuracy, with voltage regulation within 0.1V over the wide Tj range from -40 to +85°C.

The TPS3110K33DBVTG4 also features an adjustable reset time-out. This feature ensures that the automatic reset does not occur too quickly, which is important when power-on transient events happen. As well, the TPS3110K33DBVTG4 also has an adjustable reset timeout duration, which is also important for ensuring that system timing requirements are met.

Application Field

The TPS3110K33DBVTG4 can be used in two main ways: monitoring the power supplies used in communications and embedded controller applications, or tracking one or two system-level voltages.

For monitoring and control of power supplies, the TPS3110K33DBVTG4 can be used to monitor both the input and output voltages of the supply. When either of the thresholds is exceeded, the appropriate output pin will be asserted. The advantage of this is that it allows for more accurate performance and more efficient use of the power supply, as it will not be outputting more than what is needed. The TPS3110K33DBVTG4 is also excellent for use with complex systems, as it has adjustable threshold settings, adjustable reset time-outs, and adjustable output voltage regulation accuracy.

Additionally, the TPS3110K33DBVTG4 can be used in tracking one or two system-level voltages. In this application, the TPS3110K33DBVTG4 can monitor the power rail and issue an interrupt to the system processor when either of its threshold levels are exceeded. This makes it easier to protect the system components against over-voltage or under-voltage conditions. The TPS3110K33DBVTG4 is also suitable for use in applications where extreme accuracy is required, as it offers excellent output regulation accuracy.

Working Principle

The TPS3110K33DBVTG4 uses an internal control loop to monitor the input voltage at VINV and compare it to the selected threshold voltage (VH1 or VH2). If the input voltage exceeds the selected threshold, the device will assert the appropriate threshold output (VTH, VTL). The device also features two uncommitted open-drain outputs (VOUT1, VOUT2) to drive low-side power switches.

The TPS3110K33DBVTG4 has an adjustable reset time-out (tRESET) to ensure that the automatic reset operation does not occur too quickly. Additionally, the device has an adjustable output voltage regulation accuracy (0.1V) to ensure that the output is never greater than the selected threshold. Lastly, the device features an adjustable reset timeout duration to meet system timing requirements.

The TPS3110K33DBVTG4 provides a reliable solution for monitoring one or two system-level voltages and issuing an interrupt to the system processor when either of the threshold levels are exceeded. Because this device offers superior accuracy, precise control, and excellent output regulation accuracy, it is ideal for use in communication and embedded controller applications.