EVAL-CN0190-EB1Z

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The EVAL-CN0190-EB1Z Evaluation Board falls under the category of Evaluation and Demonstration Boards and Kits, and is a complete power solution that acts as a reference design for AC/DC flyback converters. With a primary side control and no opto-isolator, this board allows users to experiment with, and develop a greater understanding of flyback topology. The EVAL-CN0190-EB1Z is based on a family of high-performance, open loop, fixed frequency, current mode controllers, the CN0190, and is designed to power off-line systems that require more than 12V of regulated output power. With a wide input range, low standby current, and high efficiency, the CN0190 is capable of powering multiple types of end applications, including telecommunications, consumer electronics, and computing.

The EVAL-CN0190-EB1Z Evaluation Board is composed of a wide range of components, including two incorporated 130kHz CN0190 controllers, featuring peak current mode control. The board also features a high frequency 100kHz transformer, an AC/DC bridge rectifier with overvoltage protection, an NFET, a NFET driver, and an output polyfuse circuit and SNUBBER circuit with common mode noise filter. The input voltage can range between 90V and 264V, and the output voltage is set to 12V, with a max output power up to 15W. The board also includes useful debugging features like a frequency adjustment resistor, overcurrent protection, and programmable output voltage adjustment from 3.3V to 27V.

The EVAL-CN0190-EB1Z Evaluation Board utilizes a wide open loop design with primary side feedback control, making it especially suited for applications that require high efficiency and small board size. The peak current mode control helps to ensure fast transient response, while the included input frequency adjust circuit allows users to compensate for variations in power line. The built-in SNUBBER circuit ensures minimal RF interference and improved EMI characteristics. Furthermore, the board offers several protection features, like overvoltage protection, overcurrent protection, and thermal shutdown at the adjust pin.

The EVAL-CN0190-EB1Z Evaluation Board is a useful reference design for AC/DC Flyback converters. It is designed to simplify the development of off-line systems and allows users to experiment with various topologies of flyback converters. The board utilizes a wide input range, peak current mode control and the high frequency 100kHz transformer offers low standby current and high efficiency. It also includes helpful debugging features, like overvoltage protection, overcurrent protection, and programmable output voltage adjustment from 3.3V to 27V. It also comes with comprehensive documentation, including schematics, layout, and bill of materials, allowing users to become familiar with the CN0190 controller and the EVAL-CN0190-EB1Z Evaluation Board.

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