TIDT417 November   2024

 

  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 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-up Sequence

2.3 Thermal Images

Thermal image when charge is disabled is shown in Figure 2-3.

PMP23456 Thermal Image: VBUS = 9V, VSYS = 3.75V, ISYS = 3A, ICHG = 0A, 20 mins, Bx1 = U2 Figure 2-3 Thermal Image: VBUS = 9V, VSYS = 3.75V, ISYS = 3A, ICHG = 0A, 20 mins, Bx1 = U2

Thermal image when charge is enabled is shown in Figure 2-4.

PMP23456 Thermal Image: VBUS = 9V, VBAT = VSYS = 4.2V, ISYS = 0A, ICHG = 3A, 20 mins, Bx1 = U2 Figure 2-4 Thermal Image: VBUS = 9V, VBAT = VSYS = 4.2V, ISYS = 0A, ICHG = 3A, 20 mins, Bx1 = U2

Thermal image when charge is enabled is shown in Figure 2-5.

PMP23456 Thermal Image: VBUS = 9V, VBAT = VSYS = 4.2V, ISYS = 3.5A, ICHG = 0.5A, 20 mins, Bx1 = U2 Figure 2-5 Thermal Image: VBUS = 9V, VBAT = VSYS = 4.2V, ISYS = 3.5A, ICHG = 0.5A, 20 mins, Bx1 = U2