SLC40AC-2012A

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The SLC40AC-2012A is a highly efficient, compact offline flyback converter. It is specifically designed for LED lighting applications, featuring a low start-up current that helps to reduce system cost and complexity. The SLC40AC-2012A is a wide input range AC to DC LED driver with active PFC function and peak efficiency up to 89%. It also meets IEC/EN 61000-4-2 (ESD) air discharge level 8kV (contact discharge level 4kV) that ensures reliable operation of LED lamps in harsh environments.

The SLC40AC-2012A has a maximum efficiency of up to 89% at 12W output, providing a reliable and cost-effective design for LED lighting applications such as residential and commercial lighting, LED street lighting, LED panel lighting, LED tubes, and spot lighting. The SLC40AC-2012A also has a low start-up current of about 30uA and a low ripple and noise to reduce system cost and complexity. It is also protected by over-voltage, over-power, short-circuit, and open-circuit protections, providing a reliable operation even in low-voltage or harsh environments.

The SLC40AC-2012A utilizes a flyback circuit topology which combines the advantages of isolation and high efficiency. In this circuit, energy is transferred in two distinct steps: first, energy from the input source is stored in the inductor; then, energy from the inductor is transferred to the output load. The two stages of energy transfer provide the circuit with high efficiency and good power factor (PF). The circuit also utilizes a transformer which isolates the AC line from the output circuit and reduces the load’s interference with the input source.

In the SLC40AC-2012A, energy is transferred from the inductor to the output load using a diode bridge circuit. This circuit has a low forward voltage drop which helps to reduce power loss. It also has a good reverse voltage tolerance, which allows energy to flow back to the input source during the off-time of the cycle. The output voltage is controlled using a controller IC which takes the feedback signal from the output. The controller drives the high side of the transformer and the power switch, with the rising edge of the power switch controlling the charging of the inductor and the output voltage, and the falling edge controlling the energy transfer from the inductor to the output load.

The SLC40AC-2012A also features a wide input range that allows it to operate from a wide variety of AC sources, including low-voltage (90-130VAC) and normal house current (105-265VAC). It also has a built-in active PFC function which helps to reduce power consumption and provides a good power factor. In addition, the SLC40AC-2012A is protected against over-voltage, over-power, short-circuit, and open-circuit conditions, providing a reliable operation even in low-voltage or harsh environments.

In summary, the SLC40AC-2012A is a highly efficient, compact offline flyback converter specially designed for LED lighting applications. With a low start-up current, wide input voltage range, high efficiency, and good power factor, it provides a reliable and cost-effective design for LED lighting systems. The built-in protections and active PFC function make it an ideal choice for LED lamps in harsh environments.

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