On Semi NCN5150两线M-BUS总线收发解决方案.docxVIP

On Semi NCN5150两线M－BUS总线收发解决方案关键字：工业控制,共用表,电表,水表,气表,热力系统On Semi公司的NCN5150是用于两线M-BUS总线从设备和中继器的单片收发器,提供欧洲标准EN 13757-2和EN 1434-3的所有功能,UART通信速率高达38400波特,器件集成了3.3V VDD LDO稳压器,峰值电流15mA,可调整I/O电平,主要用在多种能源共用表, 电表,水表,气表和热力系统.本文介绍了NCN5150主要特性,框图,应用电路以及两种评估板NCN5150SOICGEVB和NCN5150QFNGEVB主要特性,电路图,材料清单和PCB布局图.The NCN5150 is a single-chip integrated slave transceiver for use in two-wire Meter Bus (M-BUS) slave devices and repeaters. The transceiver provides all of the functions needed to satisfy the European Standards EN 13757-2 and EN 1434-3 describing the physical layer requirements for M-BUS. This particular version (NQFP version) includes a programmable power level of up to 6 unit loads, which are available for use in external circuits through a 3.3 V LDO regulator. The NCN5150 can provide communication up to the maximum M-BUS communication speed of 38,400 baud (half-duplex).NCN5150主要特性:? Single-chip MBUS Transceiver? UART Communication Speeds Up to 38,400 baud? Integrated 3.3 V VDD LDO Regulator with Extended Peak Current Capability of 15 mA? Supports Powering Slave Device from the Bus or from External Power Supply? Adjustable I/O Levels? Adjustable Constant Current Sink up to 2 or 6 Unit Loads Depending on the Package? Low Bus Voltage Operation? Extended Current Budget for External Circuits: at least 0.88 mA? Polarity Independent? Power-Fail Function? Fast Startup ? No External Transistor Required on STC Pin? Industrial Ambient Temperature Range of ?40℃ to +85℃? Available in:? 16-pin SOIC (Pin-to-Pin Compatible with TSS721A)? 20-pin QFN? These are Pb-free DevicesNCN5150典型应用:? Multi-energy Utility Meters? Water? Gas? Electricity? Heating systems图1. NCN5150框图图2. NCN5150通用应用电路图图3. NCN5150采用外接电源的应用电路图评估板NCN5150SOICGEVB和NCN5150QFNGEVBThe NCN5150SOICGEVB and NCN5150QFNGEVB evaluation boards demonstrate the NCN5150 M-BUS transceiver in SOIC and QFN package respectively. These evaluation boards include all external components needed for operating NCN5150 and demonstrate the small PC