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基于NXP公司的SSL4120 90W LED照明解决方案

来源：中电网

2019-01-22

类别：无线互联

176

拍明

原标题：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 conditions

　　The 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 controllers

　　 Universal mains supply operation from 85 V to 305 V (AC)

　　 High level of integration resulting in a low external component count and a cost

　　effective design

　　 enable input to enable only the PFC or both the PFC and HBC controllers

　　 On-chip high-voltage start-up source

　　 Stand-alone operation or IC supplied from external DC source

　　PFC控制器特性:

　　 Boundary mode operation with on-time control

　　 Valley/zero-voltage switching for minimum switching losses

　　 frequency limiting to reduce switching losses

　　 Accurate boost voltage regulation

　　 Burst mode switching with soft-start and soft-stop

　　HBC控制器特性:

　　 Integrated high-voltage level shifter

　　 Adjustable minimum and maximum frequency

　　 Maximum 500 kHz half-bridge switching frequency

　　 Adaptive non-overlap time

　　 Burst mode switching

　　保护特性:

　　 Safe restart mode for system fault conditions

　　 General latched protection input for output overvoltage protection or external

　　temperature protection

　　 Protection timer for time-out and restart

　　 Overtemperature protection

　　 Soft (re)start for both controllers

　　 Undervoltage protection for mains (brownout), boost, IC supply and output voltage

　　 Overcurrent regulation and protection for both controllers

　　 Accurate overvoltage protection for the boost voltage

　　 Capacitive mode protection for the HBC controller

　　SSL4120应用:

　　The IC is used in all LED lighting applications that require very efficient, low Total

　　Harmonic 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.