TPS65233RTET

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Power Management Integrated Circuits (PMICs) is a semiconductor device that transforms raw power from one form to another to best suit the requirement of different applications. A voltage regulator is a type of PMIC that helps maintain a regulated power supply to electronic circuits. It provides a stable output voltage and current to the attached circuit regardless of variation in the input voltage and load current. Nowadays, voltage regulators are becoming increasingly popular and are commonly used in consumer electronics and automotive applications. One such device is the TPS65233RTET, an advanced, high performance power-supply system-on-chip (SoC) voltage regulator. In this article, we’ll explore the application fields of this voltage regulator and its working principle.

Application Fields

The TPS65233RTET is a single-chip PMIC that is ideal for high current, fast transient applications such as processors or memory controllers. It is suitable for use in PC motherboards, LCD TVs and monitors, notebook computers, and other applications where low noise and high efficiency is required. The device features an integrated low-dropout linear regulator and a switching regulator operating up to 1.2A. In addition, the TPS65233RTET provides a 2-MHz pulse width modulator (PWM) converter and on-chip thermal protection.

The device is equipped with a wide input voltage range (4.5V to 15V) to meet the requirements of most application. The programmable linear regulator can provide a maximum output current of up to 500mA. Moreover, the special-feature disable mode further reduces the input current consumption to minimize the power loss during light load operation. Overall, the TPS65233RTET provides high efficiency and low noise performance for various types of applications.

Working Principle

The TPS65233RTET contains both a linear regulator and a switching regulator to provide stable, reliable power to the system. The linear regulator is used to supply up to 500mA of current at a selectable output voltage (1.8V, 2.3V, 2.5V, 3.3V or 5.0V). It features a low-dropout threshold of 200mV and can operate with low input voltage down to 4.5V. The switching regulator is capable of delivering a continuous output current of up to 1.2A. It is designed to operate from an input voltage of 4.5V up to 15V and can provide output voltages of 5.0V, 6.0V and 12.0V.

The switching regulator uses a constant frequency current-mode (CFCM) control architecture. It has been optimized for fast transient response and provides a consistent switching frequency at light or full load conditions. The CFCM control also helps to spread heat evenly across the board, which is ideal for applications that require high thermal uptime. The TPS65233RTET also has an automatic skip mode to reduce switching losses during light load operation. It features a selectable PWM or Fast Transient maximum duty cycle setting.

The integrated thermal protection circuit monitors die temperature in real time and shuts off the regulator when the temperature exceeds a certain threshold. Additionally, the TPS65233RTET has several built-in protection features such as overload, short-circuit protection, under-voltage lockout, and open load protection. The device is available in an HTSSOP-16 package and is AEC-Q100 compliant.

In conclusion, the TPS65233RTET is a highly reliable, high performance power management integrated circuit ideal for CPU and memory controllers. It has a wide input voltage range and is equipped with advanced protection features. Thanks to its low drop-out threshold and fast transient response, the device is suitable for many different applications.

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