TPS78233DDCT

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TPS78233DDCT Application Field and Working Principle

The TPS78233DDCT is a high-performace voltage regulator from Texas Instruments’ TPS78233 product family. It is a linear voltage regulator designed to deliver adjustable output voltage from 3.3V to 24V with high accuracy and low quiescent current. It is especially suitable for industrial, communications and embedded applications. In this article, we will explain its application field and working principle.

Application Field

TPS78233DDCT is a linear voltage regulator particularly suitable for single-cell and multi-cell industrial and embedded applications, including:

• Power supplies from 5V to 24V
• Industrial and automation products
• Communication systems and routers
• Battery management systems
• Processors and systems-on-chip
• Digital-analog converters
• Disk drives, hubs and solid state devices

Its integrated circuit is well-suited for space-constrained applications and helps to reduce the height and cost of the total system. With an output voltage accuracy of 0.75%, TPS78233DDCT offers versatile solutions for single and multi voltage applications. It also offers excellent power dissipation and transient response performance.

Working Principle

TPS78233DDCT works with a standard linear regulator circuit. It features a P-MOSFET with a wide channel on the output end. The PMOS itself has a low on-resistance and a low dropout voltage. As the input voltage rises, the PMOS FET starts conducting current through the load, providing regulated output voltage.

The internal error amplifier monitors the output voltage. The reference voltage is then applied to the non-inverting input of the error amplifier. A resistor dividerset to a user-defined output voltage is connected to the inverting input of the error amplifier. When there is a difference between the two inputs of the error amplifier, the output of the error amplifier will be directed to the gate of the PMOS FET, changing its conduction level accordingly. In this way, the controller is able to maintain the output voltage at a preset voltage level.

The TPS78233DDCT also features adjustable current limit control and auto-discharge function. It includes an internal logic circuit that senses the current limitation and activates the FET gate accordingly. Italso provides the ability to set auto-discharge delay time, allowing you to control the discharge time and improve system performances.

Conclusion

TPS78233DDCT is a high-performance linear voltage regulator designed for industrial, communications and embedded applications. It features high accuracy, low quiescent current, low dropout voltage and adjustable output voltage. It also features adjustable current limit control and auto-discharge, allowing you to control the discharge time and improve the system performance. If you’re developing an industrial or embedded application, TPS78233DDCT can be an ideal voltage regulator solution.

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