TIDT247 February   2022

 

  1.   Description
  2. 1Board Connections, Jumpers, and Test Points
  3. 2Pin Functions
  4. 3Quick Start Guide
  5. 4Testing and Results
    1. 4.1 Thermal Image
    2. 4.2 Control Loop
    3. 4.3 Efficiency - Output Voltage 8.5 V
  6. 5Waveforms

5 Waveforms

In the switch node waveforms in Figure 5-1 and Figure 5-2, no snubber circuit is installed. These are 0-Ω gate resistor at a switching MOSFET.

GUID-20210702-CA0I-NFTZ-VSHW-DK9XXBDKTV3D-low.jpg
Channel 2 – 5 V/div
Figure 5-1 Switch Node - 5 µs/div
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Channel 2 – 5 V/div
Figure 5-2 Switch Node - 200 ns/div

Figure 5-3 shows the load transient waveform.

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Channel 2 – output voltage [200 mV/div, 2 ms/div, AC coupled]
Figure 5-3 Load Transient - 1.5 A to 3 A to 1.5 A

Figure 5-4 shows the manual input voltage switchover waveform.

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Channel 1 – Boost converter VIN [2 V/div, 1 ms/div, DC coupled]
Channel 3 – Boost converter VOUT [2 V/div, 1 ms/div, DC coupled]
Figure 5-4 Manual Input Voltage Switchover