Inductive Current DAC Control for Low-Dissipation Output

The patent changes the operating parameters by introducing an inductive current DAC topology that uses an inductor to store and transfer energy, replacing the conventional resistive current mirror topology. This fundamental parameter change allows the system to maintain adequate headroom while dramatically reducing power dissipation by eliminating the continuous power consumption of the conventional current mirror architecture.

The patent transforms the current delivery mechanism from a continuous power-consuming current mirror to an inductive switching architecture. The inductor enables high output current capability by rapidly transferring stored magnetic energy to the load, achieving high power delivery without continuous power dissipation, thus resolving the contradiction between output capability and efficiency.

The patent changes the energy consumption parameter by adopting an inductive topology that only draws power from the battery during brief switching intervals rather than continuous operation. This parameter change maintains the required current output capability while extending battery life by reducing overall power consumption, directly addressing the contradiction between maintaining current capability and extending battery duration.

The patent changes the thermal parameter by eliminating the continuous power dissipation that causes self-heating in conventional topologies. The inductive switching architecture maintains fast response speed through rapid switching while preventing accuracy degradation by minimizing heat generation, thus resolving the contradiction between speed and measurement precision caused by thermal effects.