NXP UBA20262-1 18W CFL灯电源解决方案.docx

NXP UBA20262－1 18W CFL灯电源解决方案关键词：/search/?q=%B5%E7%D4%B4%B9%DC%C0%ED电源管理,/search/?q=CFL%D3%AB%B9%E2%B5%C6CFL荧光灯,NXP公司的UBA20261/2是高压功率集成电路,用来驱动和控制大功率自镇流的紧凑型荧光灯(CFL)照明,可工作在火线电压120VAC或230VAC.器件包括两个NMOST功率MOSFET组成的半桥电路(350V/5A或600V/2.7A),用来调光的电流和用来点燃冷(汞合金)CFL灯的电流控制电路.本文介绍了UBA20261/2主要特性和优势,方框图, 基本应用电路图和UBA20261/2演示板主要指标,电路图,材料清单和PCB布局图.UBA20261/2:600 V and 350 V power IC for step dimmable CFLsThe UBA20261/2 are high-voltage power integrated circuits designed to drive and control high powered self-ballasted Compact Fluorescent Lamp (CFL) lighting applications operating at mains supply voltages of 120 V or 230 V. The IC includes a half-bridge power circuit consisting of two NMOST power MOSFETs, an advanced feature for step dimming and a lamp current controlled boost feature for boosting cold (amalgam) CFLs.The controller contains a CFL half-bridge drive function, a high-voltage level-shift circuit with integrated bootstrap diode, an oscillator function, a current control function for preheat and burn, a timer function and protection circuits. The UBA20261/2 are supplied using the dV/dt current charge supply circuit from the half-bridge circuit.UBA20261/2主要特性和优势:半桥特性: UBA20261: two internal 350 V, 1ohm, maximum 5 A NMOST half-bridge power MOSFETs UBA20262: two internal 600 V, 3 ohm, maximum 2.7 A NMOST half-bridge power MOSFETs Integrated high-voltage level-shifter function with integrated bootstrap diode预热和点燃特性: Coil saturation protection during ignition Adjustable saturation protection level Adjustable preheat time Adjustable preheat current Ignition lamp current detection灯提升特性: Adjustable boost timing Fixed boost current ratio of 1.5 Gradually boost to burn transition timing调光特性: 4-level step dimming adjustment using a standard on/off mains switch Adjustable memory retention time for step dimming Adjustable minimum dimming level保护特性: OverTemperature Protection (OTP) Capacitive Mode Protection (CMP) OverPower Protection (OPP) OverCurrent Protection (OCP) in both boost an