LNK6406D-TL

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A PMIC – AC DC Converter, Offline Switcher, such as the LNK6406D-TL, is an advanced multi-stage synchronous rectified DC/DC power supply control chip. This chip can be used in a variety of applications from personal electronics to industrial markets. Its integrated features make it suitable for circuit designs that require power efficiency, low power loss and low EMI noise. The working principle of the LNK6406D-TL is its ability to switch between a fixed voltage output voltage level and a proportional voltage output level, based on the input line voltage or switching frequency.

The main components of the LNK6406D-TL are an integrated current-mode PWM control circuit and an integrated synchronous rectifier control circuit. The PWM control circuit times the switching of synchronous rectifier circuit, thus achieving a fixed voltage output voltage level, while the synchronous rectifier circuit reduces the output power ripples. In addition, the LNK6406D-TL integrates a field effect transistor (FET) drive circuit, which provides a maximum output current of 500mA.

The LNK6406D-TL\'s main application is to provide compact, low-power solutions for power supplies ranging from 12W to 36W. It is suitable for low-power LED lighting control, driving and controlling solenoids, and switching DC motors. In addition, the LNK6406D-TL is suitable for high-efficiency dc-dc converters, charger for battery powered devices, adapter and charger supplies, and low-power AC-DC power supplies.

The LNK6406D-TL works on the principle of constant power output, meaning that regardless of the input voltage, the output power is always the same. This is achieved by controlling the switch frequency, as the output voltage is proportional to the square of the switch frequency. In order to achieve the required output voltage, the LNK6406D-TL includes a frequency control circuit that varies the switching frequency based on the input voltage and adapts to changes in the voltage.

The LNK6406D-TL also uses a current-mode PWM control circuit, which switches the synchronous rectifier according to a specific current. This current-mode PWM control allows for sustained operation at high-efficiency levels, even with low input voltages and high input frequencies. This ensures that the LNK6406D-TL can deliver maximum power to the load while maintaining maximum efficiency over time.

The LNK6406D-TL also offers advanced protection functions such as over-temperature protection, over-voltage protection, and under-voltage lockout. Additionally, the chip includes an integrated thermal monitor, which helps protect the device from high temperatures. By integrating these protection functions, the LNK6406D-TL can provide unsurpassed reliability and long-term durability for its applications.

The LNK6406D-TL is a highly advanced and versatile PMIC – AC DC Converter, Offline Switcher, offering superior power efficiency and a variety of features that make it suitable for a range of applications. Its integrated features enable designers to implement compact, low-power solutions that deliver maximum power output, while minimizing power ripples and electrical noise.

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