Abstract: The present embodiments relate to methods and apparatuses for providing fault protection in a power controller such as a voltage regulator, and particularly protection against reverse over current fault conditions. Some embodiments are capable of distinguishing between different types of reverse over current conditions, such as a high-side short or a normal over voltage condition. In these and other embodiments, fault protection is performed in favor of a load connected to the voltage regulator, rather than components of the voltage regulator itself.

Abstract: The present embodiments relate to methods and apparatuses for providing fault protection in a power controller such as a voltage regulator, and particularly protection against reverse over current fault conditions. Some embodiments are capable of distinguishing between different types of reverse over current conditions, such as a high-side short or a normal over voltage condition. In these and other embodiments, fault protection is performed in favor of a load connected to the voltage regulator, rather than components of the voltage regulator itself.

Abstract: The present embodiments relate generally to DC-DC converters, and more particularly to methods and apparatuses for preservation of phase-interleaving in a hysteretic multiphase buck controller. In one or more embodiments, a notch filter is placed in the compensation loop. The notch frequency can be adjusted to match the switching frequency of the controller, and automatically tuned to account for changes to the switching frequency introduced by controller RC components. According to additional aspects, phase interleaving is preserved even during large duty cycles.

Abstract: An integrated circuit has a single input pin for determining a value associated with a resistor divider. First circuitry determines a resistor ratio of the resistor divider through the single input pin. A first register stores a first group of bits representing the resistor ratio. The first group of bits represents the least significant bits of the value. Second circuitry determines an equivalent resistance of the resistor divider through the single input pin. A second register stores a second group of bits representing the equivalent resistance.

Abstract: A DC-DC converter includes independent first and second outputs to drive respective first and second loads from a common boost module. In one embodiment, a first linear regulator controls a first controlling device for the first output and a second linear regulator controls a second controlling device for the second output. The load requiring the higher voltage controls the boost module.

Abstract: An integrated circuit including a single input pin for determining a value associated with a resistor divider. The circuit includes first circuitry for determining a resistor ratio of the resistor divider through the single input pin. A first register stores a first group of bits representing the resistor ratio. The first group of bits comprises the least significant bits of the value. Second circuitry determines an equivalent resistance of the resistor divider through the single input pin. A second register stores a second group of bits representing the equivalent resistance. The second group of bits comprises the most significant bits of the value associated with the resistor divider.

Abstract: A DC-DC converter includes independent first and second outputs to drive respective first and second loads from a common boost module. In one embodiment, a first linear regulator controls a first controlling device for the first output and a second linear regulator controls a second controlling device for the second output. The load requiring the higher voltage controls the boost module.