WT205A

DC-DC converters are widely used for transferring and isolating electrical energy in various applications and systems. In particular, the WT205A series of DC-DC converters have become the industry standard for providing reliable and accuracy power supply solutions. This article will discuss the application field and working principle of the WT205A series converters.

Application field

The WT205A series are primarily used in applications which require accurate, reliable and isolated medium or low voltage electrical power. These applications include:

• Medical systems such as medical imaging, diagnostics, medical instruments and medical/hospital lighting.
• In industrial control systems such as PLCs, robotic control systems, motor controls, process and motion controls.
• Telecommunication equipment, satellite communication systems, broadcast systems, communication routers and mobile telephone systems.
• Automotive applications such as automotive fuel injection systems, cruise control systems, electronic stability control systems and power steering systems.
• Avionics and aviation systems, such as jet engines and air traffic control systems.
• Computer systems including servers, laptops, desktops and embedded applications.

Working Principle

The WT205A series of DC-DC converters are based on a two-stage buck-boost circuit topology. This topology combines the advantages of the buck (step-down) and the boost (step-up) regulator to ensure accurate power transfer.

In the first stage of operation, an integrated buck regulator is used to draw a constant current from the input voltage source. This current is fed to an inductor, which stores energy in its magnetic field. This energy is then discharged through a switching switch (controlled by an internal control circuit) to the output voltage of the converter. By adjusting the duty cycle (duty cycle) of the switching switch, the output voltage can be adjusted from 0.5V to 5V, depending on the MTBF of the device.

In the second stage of operation, an integrated boost regulator is used to draw energy from the output voltage of the converter and store it in a capacitor. This energy is then released through a switching switch (again controlled by an internal control circuit) to the output voltage of the converter. By adjusting the duty cycle of the switching switch, the output voltage can be adjusted from 5V to 10V.

Ultimately, this two-stage operation allows the converter to maintain a high efficiency and provide accurate and reliable power transfer even in the face of varying input voltages. The WT205A series of converters also feature overload and short-circuit protection to ensure reliable and safe operation in a variety of applications.