TIDT261 March   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 Graphs
    2. 2.2 Load Regulation
    3. 2.3 Line Regulation
    4. 2.4 Thermal Images
      1. 2.4.1 4-V Input Voltage
        1. 2.4.1.1 3-A Output Current – Average Load Current
        2. 2.4.1.2 5-A Output Current – Peak Load Current
      2. 2.4.2 12-V Input Voltage
        1. 2.4.2.1 3-A Output Current
        2. 2.4.2.2 5-A Output Current
      3. 2.4.3 18-V Input Voltage
        1. 2.4.3.1 3-A Output Current
        2. 2.4.3.2 5-A Output Current
    5. 2.5 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transients
    5. 3.5 Start-Up Sequence
    6. 3.6 Shutdown Sequence

Switching

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CH1 ⇒ 5 V / div

1-µs /div

full bandwidth

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CH1 ⇒ 5 V / div

50 ns / major div

full bandwidth

Figure 3-1 Q1 (High Side FET) Source-Drain (Referenced to VOUT), 4-V Input Voltage
GUID-20220224-SS0I-PVW6-JB5X-5PWBPFTBXQ7T-low.jpg

CH1 ⇒ 5-V / div

1-µs / div

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CH1 ⇒ 50-ns / major div

Figure 3-2 Q1 (High Side FET) Source-Drain (Referenced to VOUT), 12-V Input Voltage
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CH1 ⇒ 10-V / div

1-µs / div

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CH1 ⇒ 50-ns / major div

Figure 3-3 Q1 (High Side FET) Source-Drain (Referenced to VOUT), 18-V Input Voltage
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CH1 ⇒ 1-V / div

1-µs / div

full bandwidth

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CH1 ⇒ 50-ns / major div

Figure 3-4 Q1 Gate, 4-V Input Voltage
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CH1 ⇒ 1-V / div

1-µs / div

full bandwidth

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CH1 ⇒ 50-ns / major div

Figure 3-5 Q1 Gate, 12-V Input Voltage
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CH1 ⇒ 2-V / div

1-µs / div

full bandwidth

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CH1 ⇒ 50-ns / major div

Figure 3-6 Q1 Gate, 18-V Input Voltage
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CH1 ⇒ 5-V / div

1-µs / div

full bandwidth

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CH1 ⇒ 50-ns / major div

Figure 3-7 Q2 (LoSide FET) Drain Source, 4-V Input Voltage
GUID-20220224-SS0I-ZHLK-H4QJ-NNNWHGX9HSJZ-low.jpg

CH1 ⇒ 10-V / div

1-µs / div

full bandwidth

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GUID-20220224-SS0I-1WMW-HH3M-GBFLKQJNFPJ9-low.jpg

CH1 ⇒ 50-ns / major div

Figure 3-8 Q2 (LoSide FET) Drain Source, 12-V Input Voltage
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CH1 ⇒ 1-V / div

1 µs / div

full band width

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CH1 ⇒ 50-ns / major div

Figure 3-9 Q2 (LoSide FET) Drain Source, 4-V Input Voltage
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CH1 ⇒ 2-V / div

1-µs / div

full bandwidth

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CH1 ⇒ 50-ns major div

Figure 3-10 Q2 Gate, 12-V Input Voltage
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CH1 ⇒ 2-V / div

1-µs / div

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CH1 ⇒ 2-V / div

50-ns / div

Figure 3-11 Q2 Gate, 18-V Input Voltage