SSL5255TE数据手册Silergy中文资料规格书

描述 Description

The SSL5255TE is a highly integrated, high-precision buck-boost controller with an internal MOSFET. It is intended to drive low-cost compact dimmable LED lamps up to 12 W. The SSL5255TE is designed to achieve high power factor, phase-dimmable applications.\r
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The SSL5255TE operates in Boundary Conduction Mode (BCM) with on-time control. It regulates a constant output current over line and load variations. The wide switching frequency range makes it possible to choose an inductor, which enables the optimization of inductor size, efficiency and EMI.\r
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The SSL5255TE can start up and operate in switching mode directly from the rectified mains. To provide a low-cost driver design, an off-the-shelf inductor can be used, which provides flexibility in application design.

特性 Features

• Integrated MOSFET (5 Ω /450 V)\r
• Supports most available dimming solutions\r
• Deep dimming level\r
• Flicker-free dimming\r
• Low component count ensuring a compact solution and small, single layer Printed-Circuit Board (PCB) footprint\r
• Excellent line regulation and load regulation and good LED output current accuracy\r
• Hotaru current control\r
• Internal thermal foldback\r
• Efficient BCM operation with:\r
• Minimal recovery losses in freewheel diode\r
• Zero Current Switching (ZCS) and Valley switching for turn-on of switch\r
• Minimal inductance value and size required\r
• High efficiency (up to 90 %)\r
• Ultra low IC current during operation (< 200 μA)\r
• Auto-recovery protections:\r
• UnderVoltage LockOut (UVLO)\r
• Cycle-by-cycle OverCurrent Protection (OCP)\r
• Internal OverTemperature Protection (OTP)\r
• Output OverVoltage Protection (OVP)\r
• Output Short Protection (OSP)

应用 Application

• The SSL5255TE is intended for low-cost, non-isolated dimmable lighting applications that work from single mains voltage.