Power Solution for Battery Operated Meters With 30-dBm wM-Bus at 169 MHz Reference Design
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Key Document


This power management solution delivering 900mA @3.6V from various battery types for smart flow metering applications (residential gas and water meters). TIDA-00676 includes an ETSI Cat. 1 receiver capable RF subsystem for wM-Bus @ 169 MHz with up to +30 dBm transmit power meets all technical requirements for 169MHz RF links in Italy and France. Power management and RF sub-systems can be equally well used in data collectors and other end nodes (E-meter or In-Home Display) with wM-Bus@ 169 MHz links.

  • 360-nA Iq Step-Down Converter charges a SuperCap from multiple battery chemistries
  • Boost device supplies the 900mA current to a +30dBm Power Amplifier(PA)
  • ETSI Cat. 1 Receiver capable wM-Bus subsystem @ 169MHz with up to +30dBm transmit power and 55dB dynamic range
  • Ultra-low power FRAM MCU with rotation detection hardware and LCD controller
  • SRF7 configurations files for Receiving wM-Bus packets in all N-modes
  • Includes firmware in source code,  SRF7 Studio GUI configuration files and User's Guide

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(Output Voltage 1)
Vin (Min) (V)2.5
Vin (Max) (V)5.5
Vout (Nom) (V)3.6
Iout (Max) (A).8
Output Power (W)2.88
Input TypeDC
TopologyBuck- Integrated Switch

TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC1120  High performance Sub-1 GHz wireless transceiver for narrowband systems  SimpleLink Solutions  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR6989  Rotary Sensing MCU with extended scan interface, 128KB FRAM, AES, LCD for flow meters  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TPS61030  1.8Vin, 4-A Switch, 96% Efficient Boost Converter w/20µA Iq in TSSOP-16  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS62740  2.2V-5.5V input, ultra-low-power 300mA step-down buck DCDC converter with 360nA Iq  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC1120 Download Download
Download -
MSP430FR6989 Download Download
Download -
TPS61030 Download Download
Download Download
TPS62740 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1339 01 Sep 2015
Design files (6)
Title Type Size (KB) Date
ZIP 801 04 Sep 2015
ZIP 628 04 Sep 2015
PDF 1121 04 Sep 2015
PDF 322 04 Sep 2015
PDF 54 04 Sep 2015
PDF 333 04 Sep 2015
Related Tools & Software

Reference Designs (2)

Name Part Number Tool Type
CC112x SKY65367 EM 30 dBm 169 MHz Reference Design  CC112XSKY65367EM-RD  Reference design 
Energy Buffering for Long-Life Battery Applications Reference Design  PMP9753  Reference design 

Hardware development (1)

Name Part Number Tool Type
Water meter extented scan interface (ESI) enabled, ultra-low power MSP430FR6989 evaluation module  EVM430-FR6989  Evaluation boards 

Software development (1)

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