TIDT196 September   2020  – MONTH 

 

  1. 1Description
  2. 2Test Prerequisites
    1. 2.1 Design Requirements
    2. 2.2 Required Equipment
    3. 2.3 Considerations
    4. 2.4 Dimensions
    5. 2.5 Test Setup
  3. 3Testing and Results
    1. 3.1 Efficiency Graphs
    2. 3.2 Efficiency Data
    3. 3.3 Thermal Images
    4. 3.4 Frequency Response
    5. 3.5 Load Sharing
  4. 4Waveforms
    1. 4.1 Switching
    2. 4.2 Output Voltage Ripple
    3. 4.3 Load Transients
    4. 4.4 Start-up
    5. 4.5 Reverse Switching

1 Description

This reference design is a 2460-W bidirectional boost converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 48 V at 51.25 A. The design uses two dual-phase synchronous bidirectional controllers operating at a switching frequency of 200 kHz per phase. The 48-V output is designed to drive a motor. When the load current reverses and the output voltage reaches 54 V, hysteretic direction control allows the load current to be returned to the 12-V battery. Normal boost operation resumes when the output voltage returns to 48 V. Mounting holes are provided for a bottom-side heat sink underneath the MOSFETs.

GUID-20200828-CA0I-MZGM-TKS7-CTZ7FXCK1VNS-low.jpgFigure 1-1 Top Photo
GUID-20200828-CA0I-DGWL-FCPD-QMNSJKX5SSVT-low.jpgFigure 1-2 Bottom Photo
GUID-20200828-CA0I-VVP8-MD8P-ZGXLTWGL3VD0-low.pngFigure 1-3 Block Diagram