LNK614PG

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Introduction of PMIC - AC DC Converters, Offline Switchers

The AC-DC converter, or offline switcher, is an integrated module specifically designed for ac-dc power conversion and low noise applications, such as home appliances, industrial automation and off-line switcher applications.

Generally, AC-DC converters, or offline switchers, are designed for applications where line-voltage stability and low ripple-current performance are critical. AC-DC converters essentially convert an alternating current (AC) voltage to a direct current (DC) voltage output.

For applications that require high efficiency, AC-DC converters offer the best solution. High-efficiency AC-DC power converters, or offline switchers, improve energy savings while providing higher levels of reliability, safety and cost-effectiveness.

LNK614PG application field and working principle

The LNK614PG is a comprehensive AC/DC converter, offline switcher IC with a wide 9V-36V input voltage range and a regulated, constant-voltage output current. It integrates a power FET, power rectifier, current sense amplifier and a small transformer, and provides a comprehensive solution for plug-in power supplies.

The LNK614PG is specifically designed to provide a simple, cost-effective and safe power conversion solution. It employs a universal input voltage range and a triple-output system, providing step-down and step-up with three outputs. The LNK614PG features adjustable, constant current output and an internal power sensing resistor. It also provides a complete protection system and low standby power consumption.

The working principle of the LNK614PG is based on a simple concept: the input voltage is rectified, conditioned and then converted to AC again. The stepped-down AC output is then rectified and synchronized to match the input voltage. The output voltage is then compared to the desired output voltage, controlled and adjusted as needed to keep it constant.

The LNK614PG is a highly efficient, low-cost AC/DC converter with a wide input voltage range and a regulated, constant-voltage output current. It can be used in a variety of applications, from plug-in power supplies to motor-driving and home appliance power conversion. It is a reliable, cost-effective and safe solution for providing power conversion.

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