LNK562DG-TL

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The LNK562DG-TL is a highly efficient, low-cost, capacitor-free critical conduction mode flyback controller switch mode power supply. It is designed primarily for use in offline AC-DC SMPS, and is often found in chargers, adapters, appliances, and many other applications. As a Critical Conduction Mode flyback controller switch mode power supply (CCM-FB), the LNK562DG-TL is capable of providing a cost-effective solution for power conversion with a wide range of output power levels.

LNK562DG-TL basic Operating Principle:

The LNK562DG-TL is an offline switcher with a critical conduction mode flyback topology design. It utilizes a transformer to convert AC input voltage into a DC output voltage and current. The device queues the output voltage and current of the transformer and regulates the output of the device while monitoring the output voltage in order to ensure the desired output levels are achieved.

When the input voltage is applied to the device, an oscillator built into the device starts to switch the current from the primary side of the transformer, resulting in a magnetic field in the transformer. The magnetic field is then wound and stacked into a secondary side of the transformer; as the number of windings is increased, the output voltage of the transformer is increased, allowing higher output voltages to be achieved. During this process, the control circuitry of the device monitors the output voltage and current, and adjusts the switching frequency accordingly, thereby achieving the desired output voltage and current.

In addition, the LNK562DG-TL utilizes regulated peak current-mode control, which enables the device to maintain a constant average current throughout the switching period and thus provides better input power factor and output load regulation of the device.

Application fields of the LNK562DG-TL:

The LNK562DG-TL is primarily used as an offline AC-DC SMPS, and therefore the primary application fields it is utilized in include:

• Chargers, adapters, and power sources

• Home appliances

• Industrial automation

• Inverter/converter applications

• Automobile electronics

The LNK562DG-TL is also suitable for use in AC-DC power supplies with low power ratings and in AC mains-powered applications such as PCs and gaming consoles.

Benefits of the LNK562DG-TL:

The LNK562DG-TL offers a number of beneficial features that make it ideal for many applications. This device features high efficiency ratings, a wide operating temperature range, and low operating and standby power consumption. Additionally, the LNK562DG-TL requires no external components, eliminating the need for additional cost and complexity typically associated with switch mode power supplies.

Furthermore, the LNK562DG-TL utilizes only a single-stage power conversion, which makes it ideal for applications that require a low parts count. This characteristic also makes the device particularly well-suited for applications that have limited space, such as mobile devices, laptop computers, and other portable devices.

In conclusion, the LNK562DG-TL is an attractive option for many AC-DC SMPS applications due to its extremely low cost, high efficiency ratings, wide operating temperature range, and minimal parts count requirement. This device is ideal for applications that require a reliable and cost-efficient AC-DC SMPS, such as chargers, adapters, appliances, and inverters.

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