Abstract: A battery protector includes analog frontend circuitry coupled to a hibernate mode input terminal that is one of configured to couple to a high voltage connector terminal when the system is connected to an external load or charger to define an active mode and configured to float when the system is disconnected from the external load or charger to define a hibernate mode. The analog frontend circuitry is configured to provide a signal at an output thereof to distinguish, in the absence of an external ground connection, between connected and floating conditions for the hibernate mode input terminal. Digital logic is coupled with the output of the analog frontend circuitry, the digital logic providing a digital signal to control whether the battery protector is operating in the active mode or the hibernate mode based on the signal at the output of the analog frontend circuitry.

Abstract: A battery system includes a position detector configured to detect whether a first battery protector is coupled to a second power rail and positioned at a bottom of a stack. A cell balancing input (CBI) is coupled to receive a CBI signal to enable or disable cell balancing of the first battery protector. A cell balancing output (CBO) enables cell balancing of a second protector in the stack.

Abstract: A battery system includes a position detector configured to detect whether a first battery protector is coupled to a second power rail and positioned at a bottom of a stack. A cell balancing input (CBI) is coupled to receive a CBI signal to enable or disable cell balancing of the first battery protector. A cell balancing output (CBO) enables cell balancing of a second protector in the stack.

Abstract: A battery protector includes analog frontend circuitry coupled to a hibernate mode input terminal that is one of configured to couple to a high voltage connector terminal when the system is connected to an external load or charger to define an active mode and configured to float when the system is disconnected from the external load or charger to define a hibernate mode. The analog frontend circuitry is configured to provide a signal at an output thereof to distinguish, in the absence of an external ground connection, between connected and floating conditions for the hibernate mode input terminal. Digital logic is coupled with the output of the analog frontend circuitry, the digital logic providing a digital signal to control whether the battery protector is operating in the active mode or the hibernate mode based on the signal at the output of the analog frontend circuitry.

Abstract: Techniques are disclosed relating to using a randomized private input interface to secure passcode information. In some embodiments, a mobile device receives configuration information for user input of a passcode to another device. In some embodiments, the configuration information specifies a pseudo-random relationship of input values to input actions recognized by the other device. In some embodiments, a private interface is displayed based on the configuration information, where the private interface is visible to a user of the mobile device and not to others. In various embodiments, the disclosed techniques may reduce the ability of other nearby individuals to determine information entered by the user.