18149213. LOAD DISCONNECT BOOST CONVERTER simplified abstract (TEXAS INSTRUMENTS INCORPORATED)

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LOAD DISCONNECT BOOST CONVERTER

Organization Name

TEXAS INSTRUMENTS INCORPORATED

Inventor(s)

Jian Liang of Shanghai (CN)

LOAD DISCONNECT BOOST CONVERTER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18149213 titled 'LOAD DISCONNECT BOOST CONVERTER

Simplified Explanation:

The patent application discusses load disconnect techniques for boost converters. It describes how a power converter operates during normal boost operation and start-up operation or an output short-to-ground condition.

  • The comparator circuit disables the control circuit and enables the driver circuit during normal boost operation.
  • The driver circuit fully turns on a high-side switching element during high-side on-phase.
  • The comparator circuit disables the driver circuit and enables the control circuit during start-up operation or an output short-to-ground condition.
  • The control circuit regulates the gate voltage of the high-side switching element to control the current through the switching element.
  • The switching node voltage is regulated to about a threshold voltage higher than VIN.

Key Features and Innovation:

  • The patent application introduces a method for controlling the operation of a boost converter based on the input and output voltages.
  • It utilizes a comparator circuit to switch between different modes of operation to ensure proper functioning of the boost converter.
  • The innovation allows the boost converter to operate efficiently even when the input voltage is higher than the output voltage.

Potential Applications:

  • Power electronics
  • Renewable energy systems
  • Battery charging systems

Problems Solved:

  • Efficient operation of boost converters
  • Protection against output short-to-ground conditions
  • Regulation of switching node voltage

Benefits:

  • Improved efficiency
  • Enhanced protection mechanisms
  • Stable operation under varying input and output conditions

Commercial Applications:

The technology can be applied in various commercial sectors such as power electronics manufacturing, renewable energy systems development, and battery charging solutions.

Questions about Load Disconnect Techniques for Boost Converters:

1. How does the comparator circuit control the operation of the boost converter? 2. What are the potential benefits of using load disconnect techniques in boost converters?


Original Abstract Submitted

Load disconnect techniques for boost converters. In an example, a power converter includes a driver circuit, a control circuit, and a comparator circuit. During normal boost operation (VIN<VOUT), the comparator circuit disables the control circuit and enables the driver circuit, which in turn fully turns on a high-side switching element during high-side on-phase. In contrast, during start-up operation or an output short-to-ground condition (VIN≥VOUT), the comparator circuit disables the driver circuit and enables the control circuit, which in turn controls the gate voltage of the high-side switching element, so the current through the switching element is regulated, and the switching node voltage is regulated to about a threshold voltage higher than VIN. In this manner, the comparator circuit controls the driver circuit and the control circuit, which in turn allow the boost converter to operate in a normal fashion even when VIN is higher than VOUT.

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