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

6.2 Efficiency

The Figure 6-5 is the 3.3-V Vout efficiency graph in boost operation. The efficiency is about 93 % at Vin=2 V Vout=3.3 V Iout=250mA.

GUID-20201208-CA0I-DVLW-MK20-WTSQJZKCGBMB-low.gif Figure 6-5 3.3-V Vout efficiency in boost operation

The Figure 6-6 is the 3.6-V Vin efficiency graph in buck operation. The efficiency is about 88 % at Vin=3.6 V VCHG=2 V ICHG=2.5 mA.

GUID-20210114-CA0I-K7VP-B4PJ-QWPS9RNT1NPC-low.gif Figure 6-6 3.6 V Input efficiency in buck operation