TIDT427A December   2025  – April 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Dimensions
    3. 1.3 Considerations
  6. 2Testing and Results
    1. 2.1 Efficiency Graph
    2. 2.2 Efficiency Data
      1. 2.2.1 30V Input Voltage
      2. 2.2.2 48V Input Voltage
      3. 2.2.3 60V Input Voltage
    3. 2.3 Thermal Images
      1. 2.3.1 Thermal Images at 48VIN, 12VOUT, 10A, No Heatsink
      2. 2.3.2 Thermal Images at 48VIN, 12VOUT, 20A, RS-PRO 750-0951 Heatsink
    4. 2.4 Bode Plots
      1. 2.4.1 30V Input Voltage
      2. 2.4.2 48V Input Voltage
      3. 2.4.3 60V Input Voltage
  7. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 48V Input Voltage
        1. 3.1.1.1 0A Output Current
        2. 3.1.1.2 20A Output Current
      2. 3.1.2 60V Input Voltage
      3. 3.1.3 30V Input Voltage
    2. 3.2 Output Voltage Ripple
    3. 3.3 Input Voltage Ripple
    4. 3.4 Load Transients
  8. 4EMI Measurements
    1. 4.1 Results Summary (CISPR25 Limit lines)
    2. 4.2 Test Setup
    3. 4.3 Monopole Antenna (150kHz – 30MHz)
    4. 4.4 Biconical Antenna (30MHz to 200MHz)
    5. 4.5 Log-Periodic Antenna (200MHz – 1GHz)
    6. 4.6 Horn Antenna (1GHz – 3GHz)

4.2 Test Setup

Table 4-2 Operating Conditions
PARAMETERSPECIFICATIONS
Input Voltage48V
Output Voltage12V
Load Resistance1.2Ohm
Switching Frequency 350kHz
Dual Random Spread Spectrum Enabled
Heatsink Not assembled
PMP31349 Measurement Setup in EMI Chamber Figure 4-1 Measurement Setup in EMI Chamber
PMP31349 Measurement Setup with Log-Periodic Antenna Figure 4-2 Measurement Setup with Log-Periodic Antenna