TIDT202 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
  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
    6. 3.6 Thermal Management

Description

This reference design is a small size design (40 mm × 40 mm) 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 efficiency of solution is 92.37% at dual 15-W output. Programmable cable droop compensation helps portable devices charge at optimum current and voltage under heavy loads, and a negative temperature coefficient (NTC) thermistor is implemented for intelligent thermal management to reprogram the output voltage in over-temperature condition.

GUID-20200910-CA0I-WS9D-DLGW-1ZZS7PZ8FVDM-low.jpgBlock Diagram

GUID-20200910-CA0I-ST3N-S5DP-P6ZCGCK7RDD9-low.jpgTop Photo
GUID-20200910-CA0I-7BRH-9NBR-HSXXZ3V3FS3G-low.jpgBottom Photo