ON Semiconductor NCN5150SOICGEVB, NCN5150QFNGEVB User Manual
NCN5150NGEVB
NCN5150 Evaluation Board
User's Manual
Introduction
The 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 PCB
surface area such an implementation requires.
Overview
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. It includes a programmable
power level of up to 2 (SOIC version) or 6 (NQFP version)
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).
Applications
Multi-energy Utility Meters
• Water
• Gas
• Electricity
• Heating Systems
Features
• Single-chip MBUS Transceiver
• UART Communication Speeds Up to 38,400 baud
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EVAL BOARD USER’S MANUAL
• 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:
minimum 0.8 mA
• Polarity Independent
• Power-Fail Function
• Fast Startup − No External Transistor Required on STC
Pin
• Industrial Ambient Temperature Range of −40°C to
+85°C
• Available in:
♦ 16-pin SOIC (Pin-to-Pin Compatible with
TSS721A)
♦ 20-pin QFN
• These are Pb-free Devices
Figure 1. The NCN5150NGEVB Evaluation Boards
© Semiconductor Components Industries, LLC, 2013
March, 2013 − Rev. 0
1 Publication Order Number:
EVBUM2178/D
NCN5150NGEVB
ELECTRICAL CHARACTERISTICS
Table 1. ELECTRICAL CHARACTERISTICS OF THE NCN5150SOICGEVB AND NCN5150QFNGEVB BOARD
Value
Symbol Parameter / Condition
Bus Voltage
V
BUS
Current Drawn from the Bus
I
BUS
Output Voltage
V
DD
Bus Voltage 12 36 42 V
1 UL 1.3 1.5 mA
LDO output 3.1 3.3 3.6 V
NCN5150 DESCRIPTION
Min Typ Max
Unit
The NCN5150 provide a complete transceiver for the
Metering Bus (M-BUS). It consists of a transmit block
which will translate the logic level uart input to current level
signaling on the bus, and a receive block which will translate
the voltage-level signaling on the bus to a logic-level uart
output. The device includes an echo function which will
echo the uart input on the uart output, provided the device is
powered. This can be used by the software stack to monitor
if the message was transmitted. The high voltage level of the
microcontroller interface can be changed by connecting the
desired voltage to the VIO pin. By default, this pin is
NCN5150SOICGEVB DESCRIPTION
General Overview
The NCN5192NGEVB evaluation board demonstrates
the external components required for the operation of the IC.
Loop I/F
NCN5150
connected through a 0R resistor to 3.3 V on the evaluation
boards.
A constant current regulator that will draw a fixed current
from the bus, expressed in unit loads (UL). This current is
made available to the application through a low-dropout
3.3 V regulator. The NCN5150 will detect when the bus is
disconnected and provide an early warning to the
microcontroller that the 3.3 V supply is about to collapse
through the PFb pin.
A thermal shutdown protects the device against high
junction temperatures.
We will cover the different sections below as well as possible
alternatives. A drawing of the board where the different
sections are indicated is shown below.
Loop I/F
STC Capacitor
Figure 2. Board Drawing with Indication of Different Sections
UART I/F
Test I/F
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NCN5150NGEVB
BOM List
Table 2. NCN5150SOICGEVB BILL OF MATERIALS
Quantity Reference Part Footprint Comments Manufacturer Product Code
1 C1 1u C0603 6V3 Multicomp MCCA000515
1 C2 DNP C0603 DNP − −
5 R3, R5, R9, R12,
R13
1 C3 100n C0603 50 V Multicomp MCCA000256
1 C4 220u Case E 10 V AVX TAJD227K010RNJ
1 D1 1SMA40CAT3G SMA ON Semiconductor 1SMA40CAT3G
2 J1,J5 CON2 DNP IMO Precision 21.95MH/2
3 J2,J3,J4 CON10A DNP Multicomp 2214S−10SG−85
2 Q1,Q2 DNP SOT−23 DNP − −
4 R1, R4, R10, R15 0R R0603 62.5 mW Multicomp MC0603WG00000T5E−TR
6 R2, R6, R8, R11,
R14, R17
2 R7, R16 220R R0603 62.5 mW Multicomp MC0.063W06031%220RFR
1 R18 30K R0603 62.5 mW Multicomp MC0.063W06031%30KFR
1 TP1 GND DNP − −
1 TP2 3V3 DNP − −
1 U1 NCN5150 SOIC16 DNP ON Semiconductor NCN5150DR2G
DNP R0603 DNP − −
100R R0603 62.5 mW Multicomp MC0.063W06031%100RFR
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Schematic Diagram
NCN5150NGEVB
Figure 3. Schematic of NCN5150SOICGEVB
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