NCN5150SOICGEVB ON Semiconductor

NCN5150NGEVB NCN5150 Evaluation Board User s Manual Introduction The NCN5150SOICGEVB and NCN5150QFNGEVB evaluation boards demonstrate the NCN5150 M-BUS NCN5150NGEVB ELECTRICAL CHARACTERISTICS Table 1. ELECTRICAL CHARACTERISTICS OF THE NCN5150SOICGEVB AND NCN5150QFNGEVB BOARD Value Min Typ Max Symbol Parameter / Condition Unit Bus Voltage V Bus Voltage 12 36 42 V BUS Current Drawn from the Bus I 1 UL 1.3 1.5 mA BUS Output Voltage V LDO output 3.1 3.3 3.6 V DD NCN5150 DESCRIPTION The NCN5150 provide a complete transceiver for the connected through a 0R resistor to 3.3 V on the evaluation Metering Bus (M-BUS). It consists of a transmit block boards. which will translate the logic level uart input to current level A constant current regulator that will draw a fixed current from the bus, expressed in unit loads (UL). This current is signaling on the bus, and a receive block which will translate made available to the application through a low-dropout the voltage-level signaling on the bus to a logic-level uart output. The device includes an echo function which will 3.3 V regulator. The NCN5150 will detect when the bus is echo the uart input on the uart output, provided the device is disconnected and provide an early warning to the powered. This can be used by the software stack to monitor microcontroller that the 3.3 V supply is about to collapse if the message was transmitted. The high voltage level of the through the PFb pin. microcontroller interface can be changed by connecting the A thermal shutdown protects the device against high desired voltage to the VIO pin. By default, this pin is junction temperatures. NCN5150SOICGEVB DESCRIPTION General Overview We will cover the different sections below as well as possible The NCN5192NGEVB evaluation board demonstrates alternatives. A drawing of the board where the different the external components required for the operation of the IC. sections are indicated is shown below. Loop I/F NCN5150 UART I/F Loop I/F Test I/F STC Capacitor Figure 2. Board Drawing with Indication of Different Sections