TIDT286 June   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Considerations
    3. 1.3 Dimensions
  5. 2Testing and Results
    1. 2.1 Efficiency Graph
    2. 2.2 Loss Graph
    3. 2.3 Load Regulation
    4. 2.4 Line Regulation
    5. 2.5 Thermal Images
      1. 2.5.1 0.5-A Output Current
      2. 2.5.2 1-A Output Current
      3. 2.5.3 1.5-A Output Current
      4. 2.5.4 2-A Output Current
      5. 2.5.5 Pulsed Ouput Current
    6. 2.6 Bode Plots
      1. 2.6.1 6-V Input Voltage
      2. 2.6.2 12-V Input Voltage
  6. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 Transistor Q1
        1. 3.1.1.1 Drain - Source
        2. 3.1.1.2 Gate - Source
      2. 3.1.2 Diode D3
    2. 3.2 Input Voltage Ripple
      1. 3.2.1 20-MHz Bandwidth
      2. 3.2.2 Full Bandwidth
    3. 3.3 Output Voltage Ripple
    4. 3.4 Load Transients
      1. 3.4.1 Switching Load From 1 A to 2 A
      2. 3.4.2 Switching Load From 0.2 A to 2 A
        1. 3.4.2.1 50% Duty Cycle
        2. 3.4.2.2 Low Duty Cycle (TON = 3 ms; TOFF = 30 ms)
    5. 3.5 Start-Up Sequence
    6. 3.6 Shutdown Sequence

2.5 Thermal Images

The thermal images are shown in the following figures.

Table 2-1 Thermal Markers
Name 0.5 A 1 A 1.5 A 2 A Pulsed Load

D3

42.1°C

54.0°C

68.1°C

86.1°C

42.8°C

L1

42.3°C

50.2°C

60.5°C

74.5°C

43.3°C

Q1

45.1°C

55.2°C

68.3°C

88.2°C

44.5°C

R1

45.5°C

56.8°C

67.5°C

83.8°C

43.3°C

R101

42.2°C

51.0°C

60.3°C

76.3°C

42.4°C