ENERGY SOURCE ISOLATION AND PROTECTION CIRCUIT FOR AN ELECTRONIC DEVICE

摘要

An energy source isolation and protection circuit (112) is provided for an electronic device (100), such as a patient-worn or patient-carried medical device. The isolation and protection circuit (112) includes a supply voltage rail (402), a reference voltage rail (404), an electrical load (406) coupled across the supply voltage rail (402) and the reference voltage rail (404), and an energy source (408) for supplying a voltage to the electrical load (406) via the supply voltage rail (402) and the reference voltage rail (404). The isolation and protection circuit (112) also includes a voltage-controlled switch architecture that is configured to detach and electrically isolate the energy source (408) from the electrical load (406) (and from itself) in response to the voltage of the energy source (408) falling below a threshold voltage. The voltage-controlled switch architecture is also designed to maintain the energy source (408) in the detached and electrically isolated state in the absence of operating voltage provided by the energy source (408) to the voltage-controlled switch architecture.