TPS3600D33PW

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PMIC (Power Management IC) supervisors are essential components for the successful operation of most microelectronic system designs. They provide critical measurements for voltage and current levels, enable design of system protection to stay within safety margin, and monitor the system start-up and system reset conditions. The TPS3600D33PW supervisor is a high-precision 3.3V/3.0V/2.5V supervisor designed to monitor a regulated input voltage rail in designs using power converters and sequencing solutions. This supervisor is used to convince several features such as over-voltage, under voltage, temperature protection, over current protection, and power-on reset protection. In this article, the application field and working principle of TPS3600D33PW will be discussed.

The TPS3600D33PW is ideal for system level monitoring of 3.3V/3.0V/2.5V power-supply systems. It can be used in a variety of system monitoring applications such as main power supply, voltage supervision, system-reset supervision, over-voltage protection and temperature monitoring. This supervisor is typically employed in power-sensitive systems such as CPUs, DSPs, FPGAs, embedded systems and other sensitive microprocessor systems.

The TPS3600D33PW supervisor provides precision accuracy measurements over the temperature range of -55°C to 125°C. It features an internal voltage reference that is accurate to two percent at 25°C. The supervisor has two rated input voltages: 3.3V/2.5V. The 3.3V input is used to monitor the main logic voltage rail while the 2.5V input is used to monitor the power-supply voltage rail. The supervisor also features an internal bandgap voltage reference to provide precise monitor accuracy in addition to an integrated temperature sensor.

In terms of its working principle, the TPS3600D33PW is designed to monitor the voltage levels of 3.3V/2.5V DC power sources. The supervisor monitors the inputs based on an internal voltage reference, compares any voltage variation against the reference value, and outputs an error signal depending on the deviation. If the voltage is above the set limit, the error signal is triggered and system reset is activated. If the voltage is below the limit, the error signal is deactivated and the system reset is deactivated. The supervisor monitors both the regular input voltage readings and the temperature readings. If the temperature exceeds a certain limit, the error signal is triggered, and the system reset is activated.

The TPS3600D33PW also features an integrated R1 and R2 inputs. The voltage applied to these inputs is compared against the internal reference voltage. If the voltage applied to these inputs is lower than the reference voltage, the error signal is generated and the system reset is activated. Additionally, the TPS3600D33PW features an output protection circuit to protect itself and the system in case of an over voltage, over current, and reset protection. This protection circuit features an adjustable voltage monitor with a programmable trip point and an adjustable current monitor with a programmable trip point. The protection circuit forces the output to a safe state when any of these conditions occur.

The TPS3600D33PW has low quiescent current and high accuracy at all temperature ranges, making it an ideal device for power sensitive systems. Its over voltage and over current Protection circuits provide crucial protection against potential system failures, and its integrated temperature sensor provides extra precision to the monitoring process. This supervisor also provides low power reset with extended assertion windows, providing better system stability and speed during reset operations.

In summary, the TPS3600D33PW supervisor is an excellent solution for many microelectronics systems which require power monitoring and reset protection. It provides precision accuracy over a wide temperature range, low quiescent current and high accuracy. Its protection circuit provides crucial system protection against potential system failures, and its integrated temperature sensor adds extra precision to the monitoring process. With these features, the TPS3600D33PW supervisor is an essential component for powering sensitive systems.

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