GWS50024

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AC DC Converters

AC–DC converters are devices used in the conversion of alternating current (AC) into direct current (DC). This type of electronic device is used in a wide array of applications, such as industrial power supplies, home appliance controls, motor controllers, automotive systems, and many more. AC–DC converters can be divided into two main categories: linear and switched mode. This article will discuss the application field and working principle of the linear GWS50024 AC–DC converter model.

GWS50024 Application Field

The GWS50024 is a highly efficient, medium-power, linear AC–DC converter with an output power of 24W. It is designed for use in industrial and commercial power supplies, telecommunications systems, and other power-processing applications. The device features a low ripple, low EMI level, and wide input voltage range, making it suitable for many applications. In addition, it is also protected against over-voltage, over-current, and short-circuit conditions. The GWS50024 is also compliant with the EN61000-3-2 and EN55022 EMC standards, making it an ideal choice for many applications where EMC performance is a critical requirement.

GWS50024 Working Principle

The GWS50024 AC–DC converter operates on a ‘flyback converter’ topology. It consists of two sections – an input-switching section and an output-rectification section. The switch section is powered by an AC input voltage, which is rectified by a bridge rectifier. The DC output is then produced by a transformer, which converts the input voltage into an isolated and regulated output voltage.

The input-switching section comprises of a power transistor that is used to control the current in the transformer winding. This power transistor is driven by a control circuit, which consists of a voltage reference, error amplifier, and pulse width modulator (PWM). The voltage reference produces a precise output voltage by comparing the DC output with its reference voltage. The error amplifier then amplifies the difference between the actual output voltage and the reference voltage, and the PWM circuit modulates the pulse width of the power transistor in order to drive the transformer winding with the correct current.

The output-rectification section consists of a diode bridge, which rectifies the output from the transformer. This provides the required DC voltage level to be delivered to the output. The GWS50024 also features an active device shutdown, which monitors the output load current of the device. When the output current exceeds the set value, the device shuts down automatically in order to protect the device from the negative effects of over-current.

Conclusion

The GWS50024 linear AC–DC converter is an ideal choice for industrial and commercial applications due to its robust design, high efficiency, and wide input voltage range. The device features an advanced control system that ensures efficient and reliable operation, and it is compliant with the EN61000-3-2 and EN55022 EMC standards. The working principle of the GWS50024 is based on the ‘flyback converter’ topology, which uses a power transistor and control circuit to drive the transformer winding and regulate the output voltage.

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