TIDT397 October   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Considerations
    3. 1.3 Dimensions
  6. 2Testing and Results
    1. 2.1 Waveforms
      1. 2.1.1 Start-Up
      2. 2.1.2 Steady State Waveforms
      3. 2.1.3 Load Transient
      4. 2.1.4 Output Voltage Ripple
    2. 2.2 Loop Response
    3. 2.3 Efficiency
    4. 2.4 Thermal Images

2.4 Thermal Images

Thermal images are shown in Figure 2-15 and Figure 2-16.

PMP23463 385Vin, Full Load, Top Side, 20 Minute Soak Figure 2-15 385Vin, Full Load, Top Side, 20 Minute Soak
Table 2-2 Component Temperature, 385Vin, Full Load, Top Side
Component Max Temperature (°C)
Primary MOSFETs (Q3, Q7) 49.8°C
Transformer (T1) 78.6°C
PMP23463 385Vin, Full Load, Bottom Side, 20 Minute Soak Figure 2-16 385Vin, Full Load, Bottom Side, 20 Minute Soak
Table 2-3 Component Temperature, 385Vin, Full Load, Bottom Side
Component Max Temperature (°C)
LLC controller (U4) 44.4°C
LDO to SR controllers (U100) 72.3°C
SR controllers (U1, U2) 78.2°C
Synchronous rectifier MOSFETs (Q1, Q2, Q5, Q6) 77.1°C