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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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MC0805B474K160CT bảng dữ liệu(PDF) 7 Page - International Rectifier |
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MC0805B474K160CT bảng dữ liệu(HTML) 7 Page - International Rectifier |
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7 / 30 page  www.irf.com - 7 - 5. Functional Description HID lamps have unique electrical characteristics, and require a careful control method. Specifically, they require a high voltage for ignition, typically 3 kV to 4 kV, current limitation during warm-up, and constant power control during running. It is important to tightly regulate lamp power with respect to lamp voltage to minimize lamp-to-lamp color and brightness variations. Also, HID lamps should be driven using an AC-voltage to avoid mercury migration, and at a low frequency, typically less than 200 Hz, to prevent lamp damage or explosion due to acoustic resonance. All of these requirements are integrated in the IRS2573D. Figure 5.1: HID lamp ignition, warm-up and running modes The IRS2573D is a fully-integrated, fully-protected 600V HID control IC designed to drive all types of HID lamps. Internal circuitry provides control for ignition, warm-up, running and fault operating modes. The IRS2573D features include ignition timing control, constant lamp power control, current limitation control, programmable full-bridge running frequency, programmable over and under-voltage protection and programmable over- current protection. Advanced protection features such as failure of a lamp to ignite, open load, short-circuit and a programmable fault counter have also been included in the design. |
Số phần tương tự - MC0805B474K160CT |
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Mô tả tương tự - MC0805B474K160CT |
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