SLAA398A September   2008  – August 2018 MSP430F4794 , MSP430F4794

 

  1.   Using an MSP430™ MCU and TPS60313 to Implement a Single-Battery-Cell Powered Thermostat
    1.     Trademarks
    2. 1 Introduction
    3. 2 DC/DC Converter Basics – PIN vs POUT
    4. 3 TPS60313 Description and Features
    5. 4 MSP430 + Charge Pump Implementation for Single-Cell Thermostat
    6. 5 Thermostat Application Description
    7. 6 Current Measurements – Two Cell and Single Cell
    8. 7 Schematic
    9. 8 Conclusion
    10. 9 References
  2.   Revision History

1 Introduction

With a properly selected charge pump, the designer can implement a single-cell powered application and still maintain low-power performance and battery life. The thermostat that is described in this application report is based on the MSP430F4794 MCU and the TPS60313 dc/dc charge pump converter, which is optimized for low-power single-cell applications. The MSP430F47x4 is a high-pin-count microcontroller with many peripherals. This application requires only one of the four SD16 modules (used to sample temperature) and the Basic Timer (used for periodic wakeup). It is left to the reader to decide how functionality can be added to take full advantage of the device’s feature set.

system-overview.gifFigure 1. System Overview