Upcoming Trade Shows CHINA HI-TECH FAIR 2008 Location: Shenzhen Convention and Exhibition Center Date: 12-17 October 2008 Booth Number: 2C52 Contact : Mr. Gordon Chen
Switching Power Supply Current-Limit Latchup(2 of 6)
Relevance
Any switching-mode power supply or other constant-power device operating from a current-limited or high impedance source.
The source can be any current-limited source such as a voltage regulator with current limiting, a solar array (which has inherent current limiting), or a high impedance source, such as a telephone loop carrier system.
The load can be any constant-power load such as a switching mode power supply, etc. that draw more current from the source at lower voltages than at higher voltages in order to maintain constant power. This covers a wide variety of circuits and devices.
The problem can occur in any system with a current-limited source driving a constant-power load. This combination is becoming increasingly common with the trend towards distributed power systems.
Do not use this information for design without independent verification of the information.
