TIDT200 September   2020

 

  1.   Description
  2. 1Test Prerequisites
    1. 1.1 Design Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
  3. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Load Regulation
    4. 2.4 Thermal Images
    5. 2.5 EMI
  4. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-up Sequence
    5. 3.5 Undervoltage Protection

Description

This reference design is an EMI-optimized design for automotive USB Type-C™ charger with dual 15-W output. The TPS25850-Q1 is used as a DC/DC regulator and port controller. The switching frequency is 400 kHz. The front-end filter is designed and PCB layout is optimized to pass stringent CISPR 25 Class 5 Conducted Electromagnetic Interference (EMI) standards. This reference design has already been tested to CISPR 25 Class 5 conducted EMI standards, which accelerates customer design time.

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