THL 25-4811

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DC DC Converters: THL 25-4811 application field and working principle

DC-DC converters are electronic circuits that convert a source of direct current (DC) from one voltage level to another. Generally, the THL 25-4811 is a non-isolated step-down DC-DC converter, which means it converts power from a higher voltage to a lower voltage.

Application fields

The THL 25-4811 is often used in the following applications:

• Power supplies for various communications devices
• Electronic medical devices
• Metering application and digital weighing devices
• Battery powered vehicles
• Chargers and power supplies for telecommunications equipment

Working principle

The converter converts power from a higher voltage to a lower voltage using the following two stages:

• Conversion stage: The first stage performs the actual voltage conversion. It uses an external power inductor, an external high-frequency MOSFET circuit and an internal control circuit to run the power conversion.
• Control stage: The second stage controls the voltage and limits the current. It uses the internal control circuit to control the output voltage of the converter, and the external high-frequency MOSFET circuit to limit the current.

These two stages together in the THL 25-4811 convert the higher voltage into the target lower voltage, providing a regulated output. It can take a wide range of input voltages (5~27V) and convert them into a regulated output.

Features of THL 25-4811

The THL 25-4811 has the following features:

• Wide input voltage range: 5~27V
• Adjustable output voltage range: 0.8~16V
• High switching frequency: 2MHz
• Low output ripple noise: <250mV
• High efficiency: up to 94%
• Continuous output current: 0.5A
• High output accuracy: ±5%
• Simple installation and use

The THL 25-4811 has a variety of features that make it an ideal choice for many applications requiring high performance and high efficiency levels.

Conclusion

The THL 25-4811 DC-DC converter is a highly efficient non-isolated step-down converter, designed to convert higher voltages into lower voltages with high accuracy and efficiency. Its wide input voltage range, adjustable output voltage range and low output ripple noise make it an excellent choice for power supplies and other converters.

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