SLUAAS6 November   2024 LM25180-Q1 , LM5156-Q1 , SN6507-Q1 , UCC14240-Q1 , UCC25800-Q1

 

  1.   1
  2.   Abstract
  3. 1Introduction
    1. 1.1 Low-Voltage Isolated Bias Power Supply
    2. 1.2 High-Voltage Isolated Bias Power Supply
  4. 2Centralized Isolated Bias Power Supply Architecture
  5. 3Semi-distributed Isolated Bias Power Supply Architecture
  6. 4Distributed Architecture Using DC-DC Converter Module
  7. 5Isolated Bias Power Supply Using Gate Driver to Drive the Transformer
  8. 6Redundancy in the Isolated Bias Power Supply Architecture
  9. 7Summary
  10. 8Terminology

7 Summary

The isolated bias supply is an important part of an onboard charger circuit. There are several isolated bias power supply architectures for onboard chargers and some commonly-used architectures, are shown in this paper. Based on the chosen architecture, the next step is to choose a topology (flyback, push-pull, LLC resonant, integrated DC/DC module, and so forth) and the associated devices. Design complexity, functional safety requirements, and cost play the main role in the decision of which type of architecture and topology to use.