Method for providing current by means of an inductive component
AssigneeConti Temic microelectronic GmbH
InventorFriedhelm Heinke
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Abstract
There is suggested a simple and cost-economical circuit arrangement for specifying the current through an inductive component, in which the inductive component is acted on by the supply voltage through a switching element. To ensure a rapid and reliable increase of the current in a first phase of the current supply phase, the inductive component is acted on by a constant voltage generated by a constant voltage source during the first phase of the current supply phase, and is acted on by the supply voltage during a subsequent second phase of the current supply phase.
Claims16
Method for specifying a current flowing through an inductive component (1) during a current supply chase (ΔtB) consisting of a higher-current period in which the current is to be transitioned to and maintained at a higher nominal average current value and a subsequent lower-current period in which the current is to be transitioned to and maintained at a lower nominal average current value that is lower than the higher nominal average current value, wherein the inductive component (1) is acted on during the current supply phase (ΔtB) by a voltage, which is selected to be greater during a voltage-related first phase (Δt2) of the current supply phase (ΔtB) than during a subsequent voltage-related second phase (Δt3-Δt6) of the current supply phase (ΔtB), characterized in that, the inductive component (1) is acted on exclusively by a constant voltage (UK) generated by a constant voltage source (13) during the voltage-related first phase (Δt2) of the current supply phase (ΔtB), and is acted on exclusively by a supply voltage (UB) during the voltage-related second phase (Δt3-Δt6) of the current supply phase (ΔtB), and wherein the voltage-related first chase takes place exclusively during the higher-current period and not during the lower-current period.
Dependencies are inferred from the claim text.