NXP SSL2108x高效率通用照明LED驱动器参考设计

NXP公司的SSL2108x系列是高压集成电路,主要用来驱动通用照明的无调光的LED灯,效率大于95%.器件集成了300 V或600 V功率开关,具有多种保护功能如欠压锁住(UVLO), 前沿消隐(LEB),过流保护(OCP),短绕组保护(SWP),超温保护(OTP)以及短路保护(OSP)等.本文介绍了SSL2108X主要特性和优势,方框图, 基本应用框图和降压转换器配置图以及评估板主要特性,电路图和材料清单(BOM).

The SSL2108X is a range of high-voltage Integrated Circuits (ICs), intended to drive non-dimmable retrofit LED lamps in general lighting applications.

The main benefits of the product family are:

•Small Printed-Circuit Board (PCB) footprint, and compact solution

•High efficiency (up to 95 %)

•Ease of integration

•Low electronic Bill Of Material (BOM)

The product family is made of ICs with a range of internal HV switches for easy power scaling.

The ICs work as boundary conduction mode buck converters. The IC range has been designed to start up directly from the HV supply by an internal high-voltage current source. Followed by the dV/dt supply using capacitive coupling from the drain, or any other auxiliary supply. This functionality provides full flexibility in the application design. The supply current consumed by the IC is 1 mA, an internal clamp limits the supply voltage.
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