PT2093EL-72

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PT2093EL-72 is a high performance, low power consumption off-line fixed frequency flyback converter for universal input range AC/DC applications. It is designed to provide high efficiency and great power supply stability and reliability with its integrated isolated-integrated controller, power switch, and power supply passives.

PT2093EL-72 has wide applications in a variety of electrical and electronic products, such as set-top boxes, digital TVs, LCD monitors, network switches, PCs, routers, PDAs, industrial automation products, etc. It is also compatible with ATX form factor PC power supplies.

The working principle of PT2093EL-72 is based on a flyback converter. A flyback converter is a switch-mode power supply with an isolated output. It is characterized by a single inductor and a single switching transistor. The main components of the PT2093EL-72 are a power switch, an output rectifier, a power supply transformer, and an opto-coupler.

The power switch is triggered by the pulse width modulation (PWM) signal generated by the integrated off-line controller. The off-line controller also handles over-voltage protection, brown-out protection, and current limiting. The switching transistor is activated when the PWM signal is at its peak. This causes a current to flow through the primary winding of the transformer.

A magnetic field is generated in the transformer core due to the flowing current. As the magnetic field is disrupted, a voltage is induced in the transformer secondary winding. This voltage is rectified by the output rectifier to obtain the regulated DC voltage necessary for the application.

The opto-coupler is also an important component of the PT2093EL-72. This device isolates the high voltage side from the low voltage side. This isolation allows the controller to accurately monitor the voltage and current, as well as to provide the required over-voltage, over-current and overload protection.

In conclusion, PT2093EL-72 is a high performance, low power consumption off-line flyback converter suitable for universal input AC/DC applications. It is characterized by high efficiency, stable and reliable power supply, and provides wide applications in a variety of electrical and electronic products. The working principle of this device is based on the flyback converter, and the components include a power switch, an integrated off-line controller, a power supply transformer, an opto-coupler, and an output rectifier.

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