Software
Firmware
TIDA-00757
Smart Lock Reference Design Enabling 5+ Years Battery Life on 4x AA Batteries
TIDA-00757
Overview
With the increasing number of building and home owners looking to retrofit smart locks (or electronic locks) to their building or home, wireless battery powered smart locks are becoming increasingly popular in today’s market. In a smart lock application, the high current motor and radio often drains the battery quickly, causing battery life to suffer. Replacing multiple batteries can be a time consuming and costly issue, and thus lowering the average current consumption is often a key design consideration.
Features
- Over 5 years battery life on 4x AA batteries in series
- 24 lock or unlock events per day
- BLE radio connection period
- Motor Driver has integrated FET’s and a current sense comparator which enables easy design and small solution size with minimal discrete components
- Voltage-based battery gas gauge, integrated DC-DC converter
- BLE tested using third party BLE iOS and Android applications
- Configurable advertisement interval up to 4 seconds
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.
TIDUBV3C.PDF (11544 K)
Reference design overview and verified performance test data
TIDRMQ3A.PDF (313 K)
Detailed schematic diagram for design layout and components
TIDRMQ4A.PDF (106 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRMQ5.PDF (254 K)
Detailed overview of design layout for component placement
TIDRMQ7A.ZIP (1234 K)
Files used for 3D models or 2D drawings of IC components
TIDCCE8A.ZIP (786 K)
Design file that contains information on physical board layer of design PCB
TIDRMQ6.PDF (2691 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Smart Lock Reference Design Enabling 5+ Years of Life on Four AA Batteries (Rev. C) | Jun. 11, 2018 | |
| White paper | Extending Battery Life in Smart E-Locks (Rev. A) | Jun. 04, 2020 | ||
| Technical article | Power topology choices for power-hungry devices | PDF | HTML | Aug. 09, 2017 | |
| Technical article | Collecting environmental data with less energy and wiring | PDF | HTML | May 23, 2017 | |
| Technical article | Increasing battery life in IoT devices | PDF | HTML | May 05, 2017 | |
| Technical article | IoT is making buildings greener and more intelligent. Value versus affordability | PDF | HTML | Jan. 04, 2017 | |
| Technical article | Trends in building automation: connected sensors in safety and security | PDF | HTML | Jul. 20, 2016 |
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