TIDT192 October   2020

 

  1.   Description
  2. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
  3. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Thermal Images
    3. 2.3 Frequency Response
  4. 3Waveforms
    1. 3.1 Start-up
    2. 3.2 Switching Waveforms

2.3 Frequency Response

Frequency responses are taken with directly-supplied DC voltage across input capacitors C100 and C108 (that is, VBUS to PGND). 5 V is applied to PSON, Current PWM and Voltage PWM voltage applied differently for different current and voltage regulation settings.

GUID-20200729-CA0I-39KJ-6CWR-G2VCVQLDGXGV-low.jpg Figure 2-5 Constant Voltage Loop at 200-VDC Input and 24-V, 12-A Output
GUID-20200729-CA0I-3FHC-LXLB-M98NT2KQFR0D-low.jpg Figure 2-6 Constant Voltage Loop at 370-VDC Input and 24-V, 12-A Output
GUID-20200729-CA0I-CD3H-WMRH-LTPZ1ZD66MT9-low.jpg Figure 2-7 Constant Current Loop at 200-VDC Input With Constant Resistor Load.
GUID-20200729-CA0I-TNGK-VW5N-MCL14BR5J57J-low.jpg Figure 2-8 Constant Current Loop at 370-VDC Input With Constant Resistor Load.
GUID-20200729-CA0I-WVBT-26GC-L3LCSHG6DHJL-low.jpg Figure 2-9 Constant Current Loop at 200-VDC Input With Constant Voltage Load.
GUID-20200729-CA0I-S8FM-RN2K-2D4CK1DJ4XH7-low.jpg Figure 2-10 Constant Current Loop at 370-VDC Input With Constant Voltage Load.