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发布者:来自网络 发布时间:2014-1-14 阅读:2007次    关键字: AC-DC
PT2208-Primary Side CC/CV Regulator


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GENERAL DESCRIPTION
    The PT2208 is a high performance AC/DC power supply controller which integrates a 730V power switch. PT2208 is targeted to 5-7W designed for flyback
topology, and regulates output current/voltage without the secondary feedback loop. The ultra-low operating current at light load ensures that the PT2208 is ideal for applications targeting the newest regulatory standards for average efficiency and standby power.
    The PT2208 integrates line and primary inductance compensation and ensures output current free of line voltage and primary inductance variation. The output
cable compensation is intergrated. The output regulation can be controlled within 3% using proprietary compensation technology.
    The PT2208 integrated HV MOS and Cycle by Cycle Current Limit, VDD UV protection, OVP protection and Voltage Clamp to improve reliability. The
    PT2208 is available in a SOP8 package.

FEATURES
􀁺 High Constant Current/Voltage Accuracy (+/-3%)
􀁺 frequency jittering(+/-4%)
􀁺 Integrated primary inductance compensation
􀁺 Internal output cable c compensation
􀁺 Leading edge blanking function
􀁺 High Voltage startup circuit
􀁺 Cycle by Cycle Current Limit
􀁺 VDD OVP Protection
􀁺 Standby Power less than 120mW@220Vac
􀁺 Output short Protection

APPLICATIONS
􀁺 AC/DC LED lighting
􀁺 AC-DC RCC chargers replacement
􀁺 Power Adapters and Battery Chargers
􀁺 Standby and Auxiliary Suppliers

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