SLVAF41A March   2021  – November 2021 TPS61094

 

  1.   Trademarks
  2. 1Introduction of the Smart Meter
  3. 2The Traditional Power Solution of the Smart Meter
    1. 2.1 Connecting the Battery Directly
    2. 2.2 The Pure Boost TPS61094 or TPS610995 Solution
  4. 3The TPS61094 with Supercap Solution
    1. 3.1 TPS61094 Description
    2. 3.2 System Operation Description
  5. 4Solution Comparison
  6. 5Supercap Behavior and Design
    1. 5.1 Supercap Life Time
    2. 5.2 Supercap Leakage Currrent
    3. 5.3 Supercap Parameter Design in TPS61094 Solution
  7. 6Test Report Based on TPS61094 Solution
    1. 6.1 Test Waveform
      1. 6.1.1 NB-IoT Data Transmission
      2. 6.1.2 Supercap Charging
    2. 6.2 Efficiency
  8. 7References
  9. 8Revision History

6.1.2 Supercap Charging

Figure 6-4 shows the performance of the supercap from charging to full charge (phase 2 to phase3). During supercap charging phase, the TPS61094 can control the charging current to the set current. Because the resistor Rin(between LiSOCl2 battery and TPS61094 VIN pin), there is about 55 mV voltage drop in the TPS61094 output. When the supercap voltage reaches the set terminal voltage, the TPS61094 stops charging.

GUID-20210220-CA0I-GQM1-BH8H-D0DGT93J0QWF-low.gif Figure 6-4 The Performance of the Supercap from Charging to Charging Finished