原标题：IDT ZNRG2061太阳能电弧故障检测解决方案

　　IDT公司的ZNRG2061是用在太阳能光伏(PV)系统的电弧故障检测智能系统级芯片(SoC),是完整的DC电弧故障检测解决方案,采用先进的傅里叶变换(FFT)分析,其算法连续监测光伏电压DC电流,观测任何的电流波动,和UL 1699B设计兼容,工作电压6V-24V,工作温度-40°C- 85°C,主要用在PV太阳能逆变器,汇流箱,DC优化器和电弧故障电路中断器(AFCI).本文介绍了ZNRG2061主要特性,典型应用框图,主应用电路,以及ZNRG2061评估板主要特性,电路图,材料清单和PCB设计图.

　　The ZNRG2061 is a smart system-on-chip for arc-fault detectionin photovoltaic (PV) solar power systems. Its trainable algorithmdelivers safe and reliable signaling of arc-faults while toleratingtypical noise patterns present in solar power systems.

　　The algorithm continuously monitors the photovoltaic DC currentand observes any current fluctuation, ultimately performing a fastFourier transform (FFT) analysis. The frequency spectrum iscompared to a previously memorized baseline. If the signature ofan arc-fault is detected, a failure event is generated. To preventnuisance tripping, the baseline and other criteria are determinedwith a training procedure. Training is initiated via the graphicaluser interface (GUI) configuration software.

　　In addition to a current transformer, which also acts as galvanicisolator from the primary high voltage, the ZNRG2061 system-onchiprequires only a few external components. It contains all necessarydata acquisition, signal conditioning, and DSP functions toprovide reliable arc-fault signaling.

　　Self-diagnosis is performed continuously, ensuring that the deviceoperates safely at all times.To simplify design-in and accelerate future systems UL listings,the ZNRG2061 is designed in compliance with UL 1699B andrecognized according to UL 1998.

　　ZNRG2061典型应用:

　　Integrated arc-fault detection in

　　 PV solar power inverters

　　 Combiner boxes

　　 DC optimizers

　　 Stand-alone arc-fault circuit interrupters (AFCI)

　　Physical Characteristics

　　 Operating temperature -40°C to 85°C

　　 Supply voltage 6V to 24V

　　 32-PQFN package 5x5x0.9 mm

　　Available Support

　　 Evaluation Kit

　　 Application Notes

　　ZNRG2061主要特性:

　　 Complete DC line arc-fault detection solution in a single IC

　　 UL 1699B design compliant and UL 1988 recognized

　　 Advanced signal processing via FFT

　　 Small footprint package 5x5 mm – compact package withonly a few external components significantly contributes tooptimized application’s bill-of-materials (BOM) and circuitboard area utilization

　　 Smart automated, trainable algorithm empowers systemcustomization and adaptation to avoid nuisance tripping

　　 Signaling with a latched (static) and non-latched (dynamic)digital output

　　 Wide supply voltage range

　　 Built-in self-test

　　 Ability to interface with pseudo arc signal

　　 Automatic gain adjustment

　　 Fault clear from annunciator (via communication)

　　 UL recognition simplifies UL listing of the end product

　　图1. ZNRG2061应用框图

　　ZNRG2061评估板

　　The ZNRG2061 Evaluation Kit is designed to help the userevaluate IDT’s ZNRG2061 Smart Photovoltaic DC Arc-FaultDetector IC. The kit includes the ZNRG2061 Evaluation Boardwith a sample ZNRG2061 mounted, a current transformer, and amicro-USB cable for connecting the kit to the user’s computer.

　　When the Evaluation Board is connected to the user’s computervia a USB port, the ZNRG2061 can be monitored for arc-faultdetection. A test arc circuit enables self-testing of the device.

　　IDT’s ZNRG2061 Arc Analyzer Software provides a graphicaluser interface (GUI) to enable configuration, data analysis, andcommunication with the ZNRG2061 mounted on the EvaluationBoard. The GUI is also used to activate the training sequence thatallows the ZNRG2061 to adapt its algorithms for safe and reliabledetection of arc faults The GUI is available for download on IDT’swebsite.

　　ZNRG2061评估板主要特性:

　　Complete system demonstrates ZNRG2061 arc-detectionperformance

　　Evaluation Board includes arc test circuitry

　　Current transformer is included for easy evaluation

　　The kit can derive its power from the USB connection so noadditional power supply is required

　　图3.ZNRG2061评估板外形图

　　ZNRG2061评估板材料清单:

　　The UL-Recognized ZNRG2061is a Smart Photovoltaic SoC Whose Trainable Algorithm Delivers Safe and Reliable Signaling of Arc Faults while Avoiding Nuisance Tripping

　　SAN JOSE, Calif., March 29, 2017—Integrated Device Technology, Inc. (IDT) (NASDAQ: IDTI) today introduced a single-chip photovoltaic (PV) DC arc fault detector to help protect against fire hazards in solar power systems. The ZNRG2061 is a system-on-chip (SoC) built around the IDT® proprietary ArcWizard™ trainable algorithm, which ensures reliable signaling of arc faults while avoiding nuisance tripping. The ZNRG2061 is designed for implementation in PV solar power inverters, combiner boxes, DC optimizers and arc fault circuit interrupters (AFCIs).

　　The ZNRG2061 works in 12V and 24V power supply installations. It requires few external components and comes in a small footprint 5 x 5 mm QFN package. The device is a UL Recognized Component, simplifying the process for customers seeking the UL listing mandatory in North America.

　　The National Electric Code mandates that ground or building-mounted PV systems are equipped with an arc-fault protection, to prevent fires caused by poor electrical connections. The ZNRG2061 uniquely delivers the advantage of a single-IC chip coupled with the ArcWizard training algorithm.

　　“The ZNRG2061 is another example of IDT’s focused and concerted effort to expand into the industrial products market segment,” said Mario Montana, vice president and general manager of IDT’s Automotive and Industrial Division. “This product is a compact PV arc fault detector that improves solar power system performance and safety by providing effective and accurate arc fault detection, while avoiding nuisance tripping, thereby lowering the total cost of system operations.”

　　ZNRG2061 Features

　　• Complete DC line arc-fault detection solution in a single IC

　　• Advanced signal processing via FFT

　　• Smart automated trainable algorithm to avoid nuisance tripping

　　• Latched (static) and non-latched (dynamic) digital output signaling

　　• UL 1699B design compliant and UL1988 recognized

　　• Built-in self test

　　• Ability to interface with pseudo arc signal

　　• Automatic gain adjustment

　　• Fault clear from annunciator (via communication)

　　• Compact 5 x 5 mm package

　　About IDT

　　Integrated Device Technology, Inc. develops system-level solutions that optimize its customers’ applications. IDT’s market-leading products in RF, real-time interconnect, wireless power transfer, serial switching, interfaces, automotive ASICs, battery management ICs, sensor signal conditioner ICs and environmental sensors are among the company’s broad array of complete mixed-signal solutions for the communications, computing, consumer, automotive and industrial segments. Headquartered in San Jose, Calif., IDT has design, manufacturing, sales facilities and distribution partners throughout the world. IDT stock is traded on the NASDAQ Global Select Stock Market® under the symbol “IDTI.” Additional information about IDT can be found at www.IDT.com. Follow IDT on Facebook, LinkedIn, Twitter, YouTube and Google+.

　　###

　　© 2017. IDT and the IDT logo are trademarks or registered trademarks of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners.

　　详情请见:

IDT_ZNRG2061-Datasheet_DST_20170331.pdf

IDT_ZNRG2061-Eval-Kit-User-Manual_MAN_20170329.pdf