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DC DC Converters

DC-DC converter (or DC-to-DC converter) is a type of electronic circuit or electrical device that converts a source of direct current (DC) from one voltage level to another. It is a type of power supply component that converts a DC voltage level within a predetermined limit to another DC voltage level as required. DC-DC conversion is typically achieved by utilizing a switching device to control the flow of current through one or more inductors or capacitors.

QSB40024S28 Application Field and Working Principle

QSB40024S28 is a DC-DC converter. It comes with excellent design and performance. It features high efficiency, low no-load current and wide input voltage range. With 42 dB noise, the QSB40024S28 can be widely used in industrial automation, medical equipment, telecommunications systems, automotive applications, and other monitoring systems for the power supply.

The QSB40024S28 is a switching regulator, which is composed of an inductor, a capacitor, a diode, and a switch. It is mainly used to convert higher voltage to low voltage. Its working principle is that the inductance of the inductor restricts the DC current to flow through it. The capacitor connected to the switching regulator acts as a storage device for the electrical energy. It stores the electrical charge while the switch is open to prevent a large change in the current. When the switch is closed, the stored electrical energy is released, thus allowing the current to flow. When the switch is opened again, the current is again restricted and the capacitor no longer receives electrical energy.

The QSB40024S28 DC-DC converter supports a wide operating range from 4.5V to 24V, making it applicable in a variety of applications, such as computers, industrial automation, heavy-duty machinery, and communications. It can handle an output load of up to 200mA with overvoltage, over temperature, and short circuit protections. Additionally, it has a high efficiency of up to 91%, which enables it to convert input power into output power with minimal loss.

The QSB40024S28 offers a digital control logic with an external voltage reference option. It is designed with a built-in soft start circuit, which automatically senses the load current and adjusts the output voltage accordingly. This feature ensures a smooth start-up of the power supply system and prolongs the life of the parts. The device also includes a PWM operating frequency of up to 220kHz, adjustable operating frequency, and external frequency synchronization feature for faster system response.

Overall, the QSB40024S28 is an ideal device for high-efficiency DC-DC conversion. With its wide input voltage range, adjustable operating frequency, and protection features, it is suitable for various applications, including computers, industrial automation, and communications systems.

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