Abstract: In accordance with at least on aspect of this disclosure, a system, includes, a DC voltage input configured to provide AC voltage to a load, and a converter operatively connected between the voltage input and the load, configured to convert a DC voltage from the DC voltage input to the AC voltage. In embodiments, the converter can include a first inverter stage operatively connected between the voltage input and a diode bridge, for example, configured to connect one or more intermediate voltage levels to the load. The converter can include a second inverter stage operatively connected between the diode bridge and the load, and an interconnect switching module disposed at the second inverter stage operatively connected to control an output level of the converter at the load.

Abstract: In accordance with at least one aspect of this disclosure, a system can include a positive input line configured to connect between a voltage input and a load, and a negative input line configured to connect between the voltage input and the load. A logic module can be operatively connected to and/or configured to detect a fault (e.g., a short circuit) in either of the positive input line or the negative input line 104 between the voltage input and the load.

Abstract: Systems and methods for sensing an analog signal through digital input/output (I/O) pins are provided. Aspects include an analog to digital (ADC) circuit configured to generate a digital signal based on observations of the analog signal obtained from an analog circuit, where the ADC circuit includes a difference amplifier, a comparator, a divideby2 counter and two AND gates. Aspects also include a controller including a pin configured to receive the digital signal. The controller is configured to count pulses within the digital signal and determine values corresponding to the analog signal based on the counted pulses.