SLVAER4 August   2020  – MONTH  TPS61022

 

  1.   Trademarks
  2. 1Introduction
  3. 2Proposed Circuit Principle
  4. 3Loop Stability, Feedforward Capacitor Selection
  5. 4Schematic and Bench Test Results
    1. 4.1 Schematic
    2. 4.2 Bench Test Results
  6. 5Summary
  7. 6References

Bench Test Results

Figure 4-3 shows the load transient waveform from 0.3 A to 0.6 A when VIN = 0.7 V. Figure 4-4 shows the load transient waveform from 0.3 A to 0.6 A when VIN = 1.5 V.

GUID-20200728-CA0I-LRKP-1KPJ-XHV3BZCXQL4F-low.gifFigure 4-3 Load Transient - VIN = 0.7 V, VOUT = 3.3 V, IOUT = 0.3 A to 0.6 A
GUID-20200728-CA0I-MDX9-0CR4-DCJXX6NXFHLV-low.gifFigure 4-4 Load Transient - VIN = 1.5 V, VOUT = 3.3 V, IOUT = 0.3 A to 0.6 A

Figure 4-5 shows the bode plot when VIN = 0.7 V, IOUT = 0.6 A. Figure 4-6 shows the bode plot when VIN = 0.7 V, IOUT = 0.6 A.

GUID-20200728-CA0I-QNZX-PJ3D-VVCNTQKZP2DV-low.gifFigure 4-5 Bode Plot - VIN = 0.7 V, VOUT = 3.3V, IOUT = 0.6 A
GUID-20200728-CA0I-2TFJ-35HQ-M3T0JLX2KSTX-low.gifFigure 4-6 Bode Plot - VIN = 1.5 V, VOUT = 3.3 V, IOUT = 0.6 A

Figure 4-7 shows the efficiency curve with different input voltage in auto PFM mode when VOUT = 3.3 V.

GUID-20200728-CA0I-WLRJ-NNL0-V61BBBWSX7W7-low.gifFigure 4-7 Load Efficiency With Different Input in Auto PFM