LNK6425D

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The LNK6425D is a low-cost, high-performance manifold power supply controller from Power Integrations. It is an integrated circuit that has been designed to control the input and output voltage series of single-stage AC-DC and DC-DC converters. It is targeted for Buck, Buck-Boost, Flyback, Forward and Inverting and is capable of working in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM).

The LNK6425D is a versatile and reliable power supply controller that is designed to simplify the design of high-performance, low-cost, low-power AC-DC and DC-DC offline switcher converters. It incorporates a range of features designed to reduce total system cost while optimizing the performance, requiring minimal external components to meet the design\'s system requirements.

The LNK6425D application field and working principle are defined in its main features and functions. Its features and functions include:

• PFC Pre-Regulation : The LNK6425D Pre-Regulation feature allows PFC pre-regulation to be used in the power conversion loop. This feature enables increased power supply efficiency and reduce the output voltage ripple.
• Gate Drivers : The LNK6425D includes two integrated gate drivers, one for the input side and one for the output side. The gate drivers are capable of driving up to two external MOSFETs.
• Voltage and Current Measurement : The LNK6425D includes integrated voltage and current measurement circuits capable of monitoring the input and output voltage, current and power
• Over Temperature Protection (OTP) : The LNK6425D incorporates an Over Temperature Protection (OTP) circuit that will shut down the power supply when a temperature above a certain threshold is reached.
• PWM Modulation : The LNK6425D supports a wide range of PWM modulation techniques such as constant voltage (CV) and constant frequency (CF) to precisely control the output voltage and current.
• Switching Frequency : The LNK6425D can operate up to a switching frequency of 400 kHz.
• Fault Management: The LNK6425D is capable of handling a wide range of faults, including overcurrent, overvoltage, over temperature and undervoltage.

The LNK6425D is ideal for use in a range of offline switcher power conversion applications, from laptop adapters to LED lighting, simple PFC pre-regulators and high-end server supplies. With its wide range of features and integrated protections, the LNK6425D is the perfect solution for a variety of power conversion requirements.

The working principle of the LNK6425D is based on its integrated gate drivers, PWM modulation, and current and voltage monitoring. The LNK6425D includes two integrated gate drivers—one for the input side and one for the output side. The two gate drivers are capable of driving up to two external MOSFETs, providing a high level of efficiency and performance. Additionally, the LNK6425D enables PWM modulation techniques such as constant voltage (CV) and constant frequency (CF), allowing precise control of the output voltage and current. The integrated voltage and current monitoring circuits are capable of measuring the input and output voltage and current, providing valuable information for power supply operation.

The LNK6425D is a versatile and reliable power supply controller that is designed to simplify the design of high-performance, low-cost, low-power offline switcher converters. Its features and functions make it a perfect choice for a wide range of applications.

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