MAX1996AETI+

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The MAX1996AETI+ is a true secondary side controller for flyback converters. This device is classified under lighting, ballast controllers and is specifically made for linear fluorescent lighting. It offers an excellent voltage mode operation for downstream constant power applications and can provide great stability with a wide range of dimmer designs.

The max1996AETI+ is an innovative solution to the challenges of controlling fluorescent lighting. It offers superior stability and performance, enabling ballast designers to develop a variety of output dimmer types. This device offers a total current mode control, maximizing system level efficiency while minimizing component count.

The device utilizes a variable frequency control architecture,which offers simultaneous line frequency reduction and dimming of the output light level. It is capable of accurately controlling the current through the secondary side of the power converter, ensuring smooth dimming transition over the entire dimming range. In addition, it can compensate for variations in line frequency, input voltage and temperature to provide excellent regulation of the light level over the wide operating conditions.

The max1996AETI+ is designed to support multiple dimmer types such as phase dimmers, leading/trailing edge phase dimmers, NI0 dimmers and others. It provides high precision control of light intensity and can offer smooth transition between different light levels to produce perfect constant power output. Moreover, it offers fixed frequency compensation, adjustable slope compensation and adjustable synchronous rectifier DAC setting.

The device also comes with internal over-temperature protection, short circuit protection and adjustable switch current limit. It supports 140VAC to 400VAC input voltage range and features adjustable operating frequency ranging from 25kHz to 240kHz. Furthermore, this device is a low cost solution suitable for entry level dimmer designs.

The max1996AETI+ offers good radio frequency performance for noise sensitive applications. This device has an integrated stability filter incorporating line frequency filtering, which minimizes the effect of switching transients on the circuit’s EMI performance. This connected filter also eliminates potential EMI compliance issues associated with dimmers—and helps to reduce RFI issues. With its low leakage current, this device is also suitable for applications requiring a margin of safety, such as medical and lighting dimmers.

In conclusion, the max1996AETI+ is an innovative secondary controller for flyback converters that offers excellent voltage mode operation, fast and smooth transition between dimmer levels and low RFI, making it perfect for lighting applications. It features an integrated stability filter, low cost solution and various dimmer types support, making this an ideal choice when looking for an easy to implement, cost effective solution.

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