NXP SSL4120 90W LED照明解决方案.doc

NXP SSL4120 90W LED照明解决方案NXP公司的SSL4120是集成了PFC控制器和半桥谐振转换器(HBC)控制器的电源控制器,能以上转换器来驱动分立MOSFET和谐振半桥配置来驱动两个分立功率MOSFET,火线电压从85 V到 305 V(AC),主要用在25 W到400 W之间的电源.本文介绍了SSL4120主要特性和优势,框图和应用电路,以及90W演示板SSL4120DB1123主要特性和优势,技术指标和框图,电路图,材料清单和PCB设计图.The SSL4120 integrates a Power Factor Corrector (PFC) controller and a controller for a Half-Bridge resonant Converter (HBC) in a multi-chip IC. It provides the drive function for the discrete MOSFET in an up-converter and for the two discrete power MOSFETs in a resonant half-bridge configuration.Efficient PFC operation is achieved by implementing functions for Quasi-Resonant (QR) operation at high-power levels and QR with valley skipping at lower power levels. OverCurrent Protection (OCP), OverVoltage Protection (OVP) and demagnetization sensing ensure safe operation under all conditionsThe HBC module is a high-voltage controller for a zero-voltage switching LLC resonant converter. It contains a high-voltage level shift circuit and several protection circuits including OCP, open-loop protection, capacitive mode protection and a general purpose latched protection input.The high-voltage chip is fabricated using a proprietary high-voltage Bipolar-CMOS-DMOS power logic process enabling efficient direct start-up from the rectified universal mains voltage. The low-voltage Silicon-On-Insulator (SOI) chip is used for accurate, high-speed protection functions and control.The SSL4120 controlled PFC circuit and resonant converter topology is very flexible. It can be used for a broad range of applications over a wide mains voltage range. Combining PFC and HBC controllers in a single IC makes the SSL4120 ideal for controlling compact power supplies in lighting applications, such as LED drivers.Using the SSL4120, highly efficient and reliable power supplies providing over 100 W can be designed easily which use the minimum of external components.SSL4120主要特性和优势:一般特性: Integrated PFC and HBC controllersn Universal mains supply operation from 85 V to 305 V (AC)n High level of integration resulting in a low external component count and a costneffective design Enable input to enable only the PFC or both the PFC and HBC controllersn On-chip high-voltage start-up sourcen Stand-alone operation or IC supplied from external DC sourcenPFC控制器特性: Boundary mode operation with on-time controln Valley/zero-voltage switching for minimum switching lossesn Frequency limiting to reduce switching lossesn Accurate boost voltage regulationn Burst mode switching with soft-start and soft-stopnHBC控制器特性: Integrated high-voltage level shiftern Adjustable minimum and maximum frequencyn Maximum 500 kHz half-bridge switching frequencyn Adaptive non-overlap timen Burst mode switchingn保护特性: Safe restart mode for system fault conditionsn General latched protection input for output overvoltage protection or externalntemperature protection Protection timer for time-out and restartn Overtemperature protectionn Soft (re)start for both controllersn Undervoltage protection for mains (brownout), boost, IC supply and output voltagen Overcurrent regulation and protection for both controllersn Accurate overvoltage protection for the boost voltagen Capacitive mode protection for the HBC controllernSSL4120应用:The IC is used in all LED lighting applications that require very efficient, low TotalHarmonic Distortion (THD), high Power Factor (PF) and a universal mains input voltage.The SSL4120 provides a cost-effective power supply solution between 25 W and 400 W.图1.SSL4120框图图2.SSL4120应用电路图演示板SSL4120DB1123-90W 1.9A CC调光LED驱动器The SSL4120DB1123 demo board is a dimmable LED driver example using a PFC and an LLC stage. This manual describes the specification and use of the SSL4120DB1123 board.图3.演示板SSL4120DB1123框图演示板SSL4120DB1123主要特性和优势: Efficient PFC and LLC topology Large input voltage range Short turn-on delay time Low mains current harmonics LLC stage with large output voltage range Dimmable Single layer PCB 146 x 60 mm, wave soldering演示板SSL4120DB1123主要指标:图4.演示板SSL4120DB1123外形图图5.演示板S