TIDT246 September   2021

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Voltage and Current Requirements
    2. 2.2 Required Equipment
  3. 3Testing and Results
    1. 3.1 Efficiency and Power Dissipation Graphs
    2. 3.2 Efficiency and Power Dissipation Data
    3. 3.3 Thermal Performance
    4. 3.4 Bode Plot
    5. 3.5 Voltage Regulation
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Start-up

2.1 Voltage and Current Requirements

Table 2-1 Voltage and Current Requirements
Parameter Specifications
Input voltage range 6 V–28 V
Output voltage and current 4 × 18-V rails, 1 × 167 mA, 3 × 56 mA, 6 W maximum
Switching frequency Boost: 300 kHz, LLC: 1 MHz
Isolation Yes
Topology Open-loop LLC transformer driver with boost pre-regulator