VHK50W-Q24-S28

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DC-DC converters are important components in many electrical and electronic designs, supplying regulated direct current (DC) power to electronic circuitry. The VHK50W-Q24-S28 is a DC-DC converter manufactured by International Rectifier, and it can provide a reliable source of power conversion from a wide range of DC sources. This article will discuss the application field and working principle of this DC-DC converter.

Application Field

The VHK50W-Q24-S28 is a Buck converter, ideally suited for systems requiring an output voltage of 24V. Its wide input voltage range allows for use in applications such as automotive, industrial, medical, or telecommunications markets, as it can handle inputs from 10 to 75V without needing additional components for operation. It is designed to be a versatile, high-performance device capable of powering processors and other peripheral components with reliable, efficient power. Furthermore, its ability to handle high peak output currents and reverse voltage protection reduces the number of components required to protect the system.

Some of the features of the VHK50W-Q24-S28 include high efficiency of up to 97%, low quiescent current, low output ripple, and it is protected against input transients, reverse voltages, short circuits, and over-voltage conditions. These features make the VHK50W-Q24-S28 suitable for a variety of applications, including automotive electronics, industrial control equipment, server and telecom applications, and consumer electronic devices. With its wide operating temperature range, the VHK50W-Q24-S28 can handle temperatures from -40°C to +85°C, and it has a high power density of up to 91W/in³.

Working Principle

The VHK50W-Q24-S28 operates by using the buck-boost converter topology, a type of DC-DC converter. It takes in a wide range of DC input voltages and produces a regulated 24V output from the source. The VHK50W-Q24-S28 uses a PWM (pulse-width modulation) control to regulate the output voltage, which adjusts the duty cycle of the PWM signal to maintain the desired voltage. The output voltage is then fed to a series of power MOSFETs, which act as switches to regulate the current flow in the output circuit. The peak current of each of these power MOSFETs is then monitored by an external current sensing circuit. This current control loop provides a stable output voltage and current.

The VHK50W-Q24-S28 also has a built-in protection feature that protects against over-voltage, short-circuit, and over-temperature conditions. The over-voltage protection shuts off the power supply when the output voltage exceeds the specified range. The short-circuit protection shuts off the power supply if a short-circuit occurs. The over-temperature protection limits the output power to a safe level if the system is operating at high temperatures and will shut off the power supply if the temperature continues to rise. This provides a reliable source of power for many critical systems.

The VHK50W-Q24-S28 is an efficient and reliable DC-DC converter that is suitable for a wide range of applications. Its wide voltage range, high efficiency, and built-in protection features make it a great choice for powering processors and other electronic components. It provides an efficient and reliable source of power that can be used in automotive, industrial, medical, and telecommunications markets.

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