Providing power to a component

摘要

Apparatus includes a first connection to a battery; a second connection to a component; a first path between the first and second connections including a non-upconverting voltage regulator and being absent of a voltage upconverter; a second path between the first and second connections including a voltage upconverter; and a controller. The controller is configured to determine a minimum operating voltage of the component; to determine whether a voltage provided at the first connection meets a predetermined relationship with respect to the minimum operating voltage of the component; and on a positive determination, to enable the first path and disable the second path, and on a negative determination, to disable the first path and enable the second path.

主权项

1. A method comprising:
a controller of apparatus comprising: a first connection to a battery; a second connection to an external subscriber identity module card; a first path between the first and second connections including a non-upconverting voltage regulator and being absent of any voltage upconverter; and a second path between the first and second connections including a voltage upconverter, performing a method comprising: determining a battery voltage of the battery connected at the first connection; sending a request for information, where the request for information is about the subscriber identity module card, and where the request for information is sent to the subscriber identity module card via the second connection; determining from information received from the subscriber identity module card a minimum operating voltage of the subscriber identity module card; determining whether the battery voltage meets a predetermined relationship with respect to the minimum operating voltage of the subscriber identity module card; on a positive determination, enabling the first path and disabling the second path, and on a negative determination, disabling the first path and enabling the second path; wherein determining a minimum operating voltage of the subscriber identity module card comprises determining a type of the subscriber identity module card, and the method further comprises responding to determining that the subscriber identity module card is a 1.8V type subscriber identity module card by causing the connection from the battery to the subscriber identity module card via the non-upconverting voltage regulator and without a voltage upconverter.