An Accelerated Commutation for Passive-Clamped Isolated Boost Converters

Description:

The invention is to use a special control method to accelerate transformer current transfer from one-side to the other side. In a bi-directional dc/dc converter, one side of the transformer can be current-fed or primary side and the other side can be voltage fed or secondary side. The primary side normally experiences a high voltage overshoot during the diagonal switch-pair turn-off condition. This voltage spike needs to be clamped to avoid the need of high switch voltage rating. The invented control method can reduce the clamping energy, thus reducing the voltage spike.

Patent Information:

Title	App Type	Country	Serial No.	Patent No.	File Date	Issued Date	Expire Date	Patent Status
Accelerated Commutation for Passive Clamp Isolated Boost Converters	US Utility	*United States	09/865,099	6,452,815	5/24/2001	9/17/2002	4/29/2021	Issued
Accelerated Commutation for Passive Clamp Isolated Boost Converters	US Continuation	*United States	10/118,659	6,876,556	4/8/2002	4/5/2005	4/29/2021	Issued