TIDT195 September   2020  – MONTH 

 

  1.   Description
  2. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
  3. 2Testing and Results
    1. 2.1 Thermal Images
    2. 2.2 Efficiency and Power Dissipation Graphs
    3. 2.3 Efficiency and Power Dissipation Data
    4. 2.4 Voltage Regulation
  4. 3Waveforms
    1. 3.1 Start-up
    2. 3.2 Switch Node
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transients
    5. 3.5 Short-Circuit Recovery Response

3.4 Load Transients

The following image shows the 12-V output voltage (AC coupled) when the load current is stepped between 200 mA and 400 mA (50% load step). VIN = 50 V.

GUID-20200813-CA0I-ZNKC-WQVG-5FHJG2MM8MPX-low.jpgFigure 3-17 Load Transient, 12-V Output Voltage (AC Coupled)
(VOUT: 100 mV/div, IOUT: 200 mA/div, 1 ms/div)

The following image shows the 12-V output voltage (AC coupled) when the load current is stepped between 400 mA and 200 mA (50% load step). VIN = 50 V.

GUID-20200813-CA0I-RTDX-BSMW-MHMGHZCFRC2C-low.jpgFigure 3-18 Load Transient, 12-V Output Voltage (AC Coupled)
(VOUT: 100 mV/div, IOUT: 200 mA/div, 1 ms/div)

The following image shows the 12-V output voltage (AC coupled) when the load current is stepped between 200 mA and 400 mA (50% load step). VIN = 150 V.

GUID-20200813-CA0I-QMCH-NZR2-CGXDLNNW685X-low.jpgFigure 3-19 Load Transient, 12-V Output Voltage (AC Coupled)
(VOUT: 100 mV/div, IOUT: 200 mA/div, 1 ms/div).
The following image shows the 12-V output voltage (AC coupled) when the load current is stepped between 400 mA and 200 mA (50% load step). VIN = 150 V.
GUID-20200813-CA0I-S3HF-HDXD-JZTNJTVCHP5T-low.jpgFigure 3-20 Load Transient, 12-V Output Voltage (AC Coupled)
(VOUT: 100 mV/div, IOUT: 200 mA/div, 1 ms/div).