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  • Interleaved and Multiphase Inverting Buck-Boost Converter Reference Design

    • TIDT323 june   2023

       

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  • Interleaved and Multiphase Inverting Buck-Boost Converter Reference Design
  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1System Specification
    1. 1.1 Input Characteristic
    2. 1.2 Output Characteristics
  6. 2Results
    1. 2.1  Efficiency Graph, Voltage Mode
    2. 2.2  Efficiency Data, Voltage Mode
    3. 2.3  Efficiency Graph, Current Mode
    4. 2.4  Efficiency Data, Current Mode
    5. 2.5  Load Regulation, Voltage Mode
    6. 2.6  Load Regulation, Current Mode
    7. 2.7  Line Regulation, Voltage Mode
    8. 2.8  Line Regulation, Current Mode
    9. 2.9  Thermal Images, Voltage Mode
    10. 2.10 Thermal Image, Current Mode
  7. 3Waveforms
    1. 3.1  Prebias Start-Up, Voltage Mode
    2. 3.2  Prebias Start-up, Current Mode
    3. 3.3  Output Voltage Ripple, Voltage Mode
    4. 3.4  Output Voltage Ripple, Current Mode
    5. 3.5  Load Transient, Voltage Mode
    6. 3.6  Load Transient, Current Mode
    7. 3.7  Line Transient, Voltage Mode
    8. 3.8  Line Transient, Current Mode
    9. 3.9  Phase Current Balancing, Voltage Mode
    10. 3.10 Phase Current Balancing, Current Mode
    11. 3.11 Loop Response, Voltage Mode
    12. 3.12 Loop Response, Current Mode
  8. IMPORTANT NOTICE
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Test Report

Interleaved and Multiphase Inverting Buck-Boost Converter Reference Design

Description

This reference design uses the UCD3138064A device as a digital controller to control inverting buck-boost. The design is capable of supporting two-phase peak current mode control or three-phase voltage mode control. The soft-switching technology is used in this design to improve the power efficiency. The input voltage is from –36 V to –62 V. The output voltage is adjustable from 28 V to 52 V. The default output voltage is 48 V and the maximum current is 14 A in two-phase peak current mode control or 21 A in three-phase voltage mode control.

Features

  • High efficiency above 97.1%
  • Interleaved two-phase peak current mode (PCM) control or three-phase with voltage mode control
  • Zero voltage switching of MOSFETs
  • Prebias start-up
  • Current balancing between phases
  • GUI-configurable to design a power supply based on requirements

Applications

  • Macro remote radio unit (RRU)
  • Battery backup unit (BBU)
  • Merchant DC/DC
GUID-20230118-SS0I-B6R1-WQ1F-MG9QBLPFP34P-low.jpgTop Side
GUID-20230117-SS0I-JS3W-JMGT-9L1RDRTCKKLB-low.jpgBottom Side

 
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