INN3268C-H208-TL

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Power management integrated circuits (PMICs) are an integral part of modern electronic circuits as they address the need for efficient energy-conversion and control. Proper management of power saves money, resources and increases system performance. PMICs are found in almost every electronic system containing micro-controllers and digital signal controllers, as well as in various analog circuits. A power management IC (PMIC) converter is an integrated circuit (IC) that efficiently manages the power in an electronic device. PMIC converters are used to interface the primary power source with the power rails of the device to ensure the correct amount of power is delivered to the right place, in the right form, at the right time. PMIC-AC DC converters, offline switchers and any other form of switching power converters are designed to convert alternating current (AC) power to direct current (DC) power of the specified levels and deliver it to the connected load.

The INN3268C-H208-TL is a PMIC AC DC converter integrated in a single package to offer superior performance. It is a full bridge AC/DC offline switcher, providing a regulated DC output from an unregulated AC input. This IC combines the rectification, filtering, active PFC, voltage conversion and electronic protection functions into a single package. It is ideal for low power AC-DC applications and comes with a wide range of features including over-temperature protection and over-voltage protection.

Application Field

The INN3268C-H208-TL is suitable for a wide range of applications such as home appliances, lighting, automotive, industrial and communication equipment, and packaging products. The device is logic controlled and easy to debug through a set of general signals. It is designed to provide a full bridge AC/DC Link up to 200W constant power, up to 360W peak power and up to 500W peak power when configured in parallel with additional converters. The wide input voltage range of 90VAC~305VAC makes this converter suitable for global markets and it provides efficient isolated power conversion and low standby power consumption. It also features intelligent protection functions such as over-temperature, over-voltage and adaptive current limit.

Working Principle

The INN3268C-H208-TL is a direct offline switcher, meaning that it is configured to provide an output voltage of some fixed magnitude from an input voltage of some fixed magnitude. The device is based on a voltage-mode control topology using a Pulse Width Modulation (PWM) voltage regulator. The advanced, high-frequency switch mode operation ensures low output ripple, high efficiency and fast dynamic response. The device comes with a programmable frequency, which allows designers to select the best operating frequency for a specific application. In addition, the switching frequency can be adjusted to reduce the audible noise level.

The IC is self-protected and features short-circuit and over-voltage protection. The highly-integrated design simplifies layout and reduces component count. It is immune to Man Made Emissions (MMEs) which allows it to work in the presence of high levels of electrical noise, making it ideal for noisy environments. The device also offers an anti-latchup circuit, allowing it to shut off automatically in the event of over current or incorrect component wiring.

The INN3268C-H208-TL is an intelligent switcher, providing a low component count, high-efficiency solution for a range of DC power applications. Its wide input voltage range and high-efficiency make it a perfect choice for global markets. The device has both over-temperature protection and over-voltage protection, which ensure safe operation and long-term reliability.

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