Patent ID: 9419474
Filing Date: 2016-08-16
CPC Classification: H02J

Claim Text:
1. A voltage control circuit for transitioning from a first power source to a second power source, the voltage control circuit comprising: a first main terminal configured to connect to a load, a first terminal of the first power source, and a first terminal of the second power source, the second power source comprising a battery; a first field-effect transistor (FET) configured to connect to a second terminal of the second power source; a second FET connected in series to the first FET; a second main terminal configured to connect to the load, a second terminal of the first power source, and the second FET; and one or more voltage control elements connected to the first FET and the second FET, the one or more voltage control elements being configured to control the first and/or second FET to cause voltage across the load to transition from being supplied by the first power source to being supplied by the second power source, the controlling including causing an amount of current flowing through the first FET to the load to be increased over a time period that is based on at least one of: