NCP692MN25T2GEVB Development Boards, Kits, Programmers

Evaluation Boards - Linear Voltage Regulators

The NCP692MN25T2GEVB (NCP692) is an evaluation board from ON Semiconductor which is designed to support and simulate the functions and features of the NCP692 linear voltage regulator. Used for a range of applications, the NCP692 is a voltage regulator intended for use in fast transient and hot-swap applications.

Applications

The NCP692 is ideal for screw terminal applications in applications such as data centres, telecom systems, PCs and other electronic systems are seeking efficient and reliable power distribution. As a voltage regulator, the NCP692 is designed to provide high output voltage accuracy, very low output voltage noise and a fast transient response over a wide range of line, load, and temperature conditions. The NCP692 is also designed to operate with minimum input voltage droop and output voltage overshoot.

Features

The NCP692 evaluation board has several features which make it suitable for applications such as computing and networking, game consoles, air conditioners, and other applications with high-power consumption. The board features a wide input voltage range of 2.7 V to 14.5 V, and a wide output voltage range of 0.8 V to 13.0 V. The board also has a low quiescent current of 400 µA, as well as a fast transient response of 75 µs. The evaluation board also features an adjustable under-voltage lockout (U.V.L.O) to protect the system from inrush current during thermal shock or transients.

In addition to these features, the NCP692 evaluation board also has an over-current protection (OCP) and overtemperature protection (OTP) to prevent the system from operating with excessive loads. The evaluation board also has an adjustable soft-start feature to prevent over-voltage surges during start-up.

Working Principle

The NCP692 evaluation board operates on the linear voltage regulation principle, which is based on the Voltage Control Loop (VCL) topology. This topology uses a voltage reference, an error amplifier, and a pass transistor to regulate the output voltage. In this topology, the voltage regulation loop senses the output voltage using a voltage divider and controls the pass transistor to adjust the output voltage by feeding a voltage signal to the pass transistor.

When the voltage divider senses a drop in the output voltage, it will provide a low voltage signal to the error amplifier which in turn provides a larger voltage signal to the pass transistor. The pass transistor will then increase the voltage on its gate and allow more current to flow through the circuit, thus raising the output voltage.

On the other hand, when the voltage divider senses an increase in the output voltage, it will provide a high voltage signal to the error amplifier, which in turn reduces the voltage signal to the pass transistor. The pass transistor will then reduce the voltage on its gate and allow less current to flow through the circuit, thus decreasing the output voltage.

The NCP692 also features a fast transient response, which allows it to respond quickly to sudden changes in its input voltage as well as sudden changes in its output current. This allows the regulator to quickly provide a stable output voltage, even in the event of sudden fluctuations in the input voltage or sudden changes in the output current.