Abstract: A circuit that stores characterized loss information for a buck converter and uses the characterized loss information instead of measurements involving output power dependent losses. The characterized loss information may include the characterized switching loss, the characterized ripple loss, etc. The circuit may then calculate the output power, efficiency, power dissipation, etc. without needing to measure the output current.

Abstract: Embodiments relate to an improved segmented resistor digital-to-analog converter (DAC) with resistor recycling. An input digital code word is segmented into M most-significant-bits (MSBs) and N least-significant-bits (LSBs). The DAC includes a MSB resistor ladder coupled with a first set of switches and a LSB resistor ladder coupled with a second set of switches. Based on the decoded bit pattern of the LSBs, embodiments are operable to either switch one or more LSB resistors from the bottom of the MSB resistor ladder up to the top, or to switch the LSB resistors from the top of the MSB resistor ladder down to the bottom. In at least one example embodiment, this technique can avoid redundant resistors in the circuit, which can solve mismatch problems due to redundant resistors in the circuit as in prior art solutions, which can lead to problems relating to non-linearity and non-monotonicity.

Abstract: A circuit that stores characterized loss information for a buck converter and uses the characterized loss information instead of measurements involving output power dependent losses. The characterized loss information may include the characterized switching loss, the characterized ripple loss, etc. The circuit may then calculate the output power, efficiency, power dissipation, etc. without needing to measure the output current.

Abstract: An apparatus and method are disclosed for providing attenuation. An operational amplifier is in a non-inverting gain configuration with its output provided to a voltage divider having a first resistive component and a second resistive component. The first resistive component includes a plurality of resistors in series, and a feedback loop of the amplifier is defined at various points within the series of resistors and has a plurality of switches associated with each of the resistors in series. The output voltage is defined by the second resistive component. A switch of the plurality of switches may be selected to be closed to define a gain of the amplifier, thereby setting the attenuation ratio the circuit.