ALEXANDRIA, Va., June 16 -- United States Patent no. 12,658,801, issued on June 16, was assigned to Rohm Co. Ltd. (Kyoto, Japan).
"Switching power supply device, switch control device, vehicle-mounted appliance, and vehicle" was invented by Genki Tsuruyama (Kyoto, Japan) and Isao Takobe (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In the switching power supply device, a controller has a first state in which it keeps a first switch on and a second switch off, a second state in which it keeps the first switch off and the second switch on, a third state in which it keeps the first and second switches off, and a fourth state in which it keeps a voltage at a connection node between the first and s...