Smart Meter Power Management Solution with Energy Buffering Reference Design


Design files


Smart Wireless Sensors are typically powered by Long-Life Batteries Like LiSoCl2 chemistry which are limited in current. However, these sensors require high current pulses for transmitting the gathered data wirelessly. This Reference Design provides a solution for powering the MCU with reduced current and high current pulses to the radio. These pulses are decoupled from the battery by Energy Buffering.

  • Buck (MCU) and Boost (RF-PA) Rail
  • Load Decoupling with Energy Buffering
  • Ultra Low Iq
  • Longer Battery Runtime by VDD Down Conversion
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRG80.PDF (101 K)

Detailed schematic diagram for design layout and components

TIDRG81.PDF (17 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61291Low Iq Boost Converter with 15nA Bypass Operation

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS627402.2V-5.5V input, ultra-low-power 300mA step-down buck DCDC converter with 360nA Iq

Data sheet: PDF | HTML
P-channel MOSFETs

CSD23381F4-12-V, P channel NexFET™ power MOSFET, single LGA 0.6 mm x 1 mm, 175 mOhm, gate ESD protection

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9763 Test Results Jul. 29, 2015

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