TIDT341 july   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Start-Up and Shutdown
    2. 3.2 Charge Enable and Disable
    3. 3.3 Typical Charge Waveforms
    4. 3.4 Typical OTG Waveforms
    5. 3.5 OTG Transient

2.3 Thermal Images

The PMP22419 design was tested with a 4S battery at room temperature and natural convection as shown in the following figures.

Figure 2-2 shows test results at 20 VIN, 12 VBAT, 130 W, 800 kHz.

GUID-20230707-SS0I-WVTG-DND9-BVFNKQVTCQ43-low.png
Q1 FET temperature = 76.4°C, IND temperature = 74.3°C
Q4 FET temperature = 66.8°C, IC temperature = 63.4°C
Figure 2-2 Thermal Image (20 VIN, 12 VBAT, 130 W)

Figure 3-12 shows test results at 20 VIN, 18 VBAT, 130 W, 800 kHz.

GUID-20230707-SS0I-PCL5-KZHD-CTT1PDHKJKK6-low.png
Q1 FET temperature = 48.6°C, IND temperature = 46.8°C
Q4 FET temperature = 46.3°C, IC temperature = 45.8°C
Figure 2-3 Thermal Image (20 VIN, 18 VBAT, 130 W)