SLUAAS7 December   2023 UCD3138 , UCD3138064 , UCD3138064A , UCD3138128 , UCD3138128A , UCD3138A , UCD3138A64

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Quick Start
  5. 2 Ecosystem
  6. 3 Introduction
  7. 4 TI Controller Options for Power Supplies
    1. 4.1 Power Controller Landscape
    2. 4.2 UCD3138x Product Selection
  8. 5 TI Hardware
    1. 5.1 Open Loop EVMs
    2. 5.2 Application EVMs
    3. 5.3 Control Cards
    4. 5.4 Reference Designs
  9. 6 Programmers and Debuggers
    1. 6.1 USB-to-GPIO2 Interface Adapter
    2. 6.2 JTAG Debuggers
  10. 7 Software
    1. 7.1 UCD3138x Training Labs
    2. 7.2 UCD3138 Application Development Firmware Kit
    3. 7.3 Custom Firmware
  11. 8 Development Tools
    1. 8.1 Code Composer Studio (CCS)
    2. 8.2 Fusion Digital Power Studio
    3. 8.3 UniFlash
  12. 9 Application
    1. 9.1 Multiple Series Power Stages
    2. 9.2 Multiple Parallel Power Stages
    3. 9.3 High Performance and External Communication
    4. 9.4 High Power Density
  13. 10Support Resources
    1. 10.1 Documentation
    2. 10.2 TI E2E Support Forum
  14. 11Summary
  15. 12References

9.2 Multiple Parallel Power Stages

Other power conversion applications require multiple power converters in parallel. A system can require multiple outputs from a single source. For example, a 48-V electric vehicle battery can require multiple synchronous buck converters in parallel for bi-directional battery charging applications. A typical design requires separate analog controllers for each power stage.

GUID-20231127-SS0I-PCRL-DWMW-BJJRCQDXQWKN-low.svg Figure 9-4 Parallel Power Stages Using Analog Controllers

The UCD3138x devices increase efficiency and power density by controlling all power stages at once. By utilizing the 8 DPWM outputs, multiple power stages can be controlled in series. Thus, only one controller is needed to provide a system-level design.

GUID-20231127-SS0I-7QCV-SPWV-B4WKSLVRM8DS-low.svg Figure 9-5 Parallel Power Stages Using a UCD3138x Device

The TIDA-00653 reference design provides an example for multiple parallel power stages controlled by one UCD3138x device.

GUID-20231204-SS0I-Q8P3-FHWP-PRLQXPSNDC4L-low.png Figure 9-6 TIDA-00653 Demonstrates Multiple Outputs Using One UCD3138128

Key Reference Designs

  • TIDA-00653: Non-isolated Bi-directional Converter Reference Design for Battery Charging Applications
  • PMP4333: 1-kW Triple-Rail Isolated DC/DC Digital Power Supply for Telecom