OB6566L数据手册OB中文资料规格书

描述 Description

OB6566L is an active transition-mode (TM) power factor correction (PFC) controller for AC-DC switching mode power supply applications.\r
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OB6566L features a demagnetization detector to ensure TM operation, a current sensing comparator with built-in leading-edge blanking, and a totem pole output ideally suited for driving a power MOSFET.\r
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OB6566L offers great protection coverage including system over-voltage protection (OVP) to eliminate runaway output voltage due to load removal, VCC under voltage lockout (UVLO), cycle-by-cycle current limiting, Inductor short protection(ISP), and gate drive output clamping for external power MOSFET protection.\r
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With added system open loop protection feature, OB6566L shuts down system when the feedback loop is open.

特性 Features

• Transition Mode (TM) Operation\r
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• Works without Transformer ZCD Winding(simple inductor)\r
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• Low Start-up Current and Operating Current\r
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• Cycle-by-Cycle Current Limiting\r
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• Adjustable Demagnetization detection delay\r
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• Under Voltage Lockout with Hysteresis\r
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• Very Precise Adjustable Output Overvoltage Protection \r
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• Dynamic OVP &Static OVP function\r
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• Totem Pole Output with High State Clamping\r
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• System Open Loop Protection\r
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• Inductor short protection\r
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• Audio Noise Free\r
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• 9V to 26V wide range of VCC voltage

应用 Application

• LED lighting