TIDT260 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 8-V Input Voltage
      2. 2.4.2 18-V Input Voltage
    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
    7. 3.7 Spread Spectrum Feature

Switching

The switching waveforms are illustrated in the following images.

GUID-20220221-SS0I-9KLZ-5JDV-FQBVR5GP6NV1-low.jpg

CH1 ⇒ 5-V / div,

100-ns / div,

full bandwidth

GUID-20220221-SS0I-VG29-MMF1-XXR7BZMTBPR5-low.jpg
GUID-20220221-SS0I-ZV8F-7LNJ-HZBXFWLK8RZW-low.jpg

CH1 ⇒ 100-ns full scale

Figure 3-1 Switch Node (TP2 to GND), 8-V Input Voltage
GUID-20220221-SS0I-M8FG-PRHZ-C8K0FB0ZN4GP-low.jpg

CH1 ⇒ 10 V / div

100-ns / div

full bandwidth

GUID-20220221-SS0I-NHBL-RQGW-1CXR9ZPZ86KF-low.jpg
GUID-20220221-SS0I-6CSR-TQJB-CTSRJSXJSJPZ-low.jpg

CH1 ⇒ 100-ns full scale

Figure 3-2 Switch Node (TP2 to GND), 18-V Input Voltage
GUID-20220221-SS0I-RHCV-RZ9L-X6QP25XX6GCH-low.jpg

CH1 ⇒ 5 V / div

100 ns /div

full bandwidth

GUID-20220221-SS0I-0QV7-11HX-7PGKB1GT5Q47-low.jpg
GUID-20220221-SS0I-FJW2-PXXM-TKL13ZHX2SCT-low.jpg

CH1 ⇒ 100-ns full scale

Figure 3-3 D1 to VOUT, 8-V Input Voltage
GUID-20220221-SS0I-36WC-0GKN-FGWBQVQKS7HF-low.jpg

CH1 ⇒ 10 V / div

100 ns /div

full bandwidth

GUID-20220221-SS0I-KZ38-WRVJ-V67Z3GJXC8D4-low.jpg
GUID-20220221-SS0I-PS14-PSFN-4STD6HQ9GJVF-low.jpg

CH1 ⇒ 100-ns full scale

Figure 3-4 D1 to VOUT, 18-V Input Voltage