Circuit unit
AssigneeOSRAM GmbH
InventorsAlois Biebl, Günther Hirschmann
Life of this patent
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Abstract
The invention relates to a circuit unit for a semiconductor unit which produces radiation, with a forward voltage Uf being applied during operation to the semiconductor unit which produces radiation, and with a forward current If flowing through the semiconductor unit which produces radiation, with the circuit unit regulating the forward current If such that an actual value Vact which depends on the forward current If and the forward voltage Uf assumes a predetermined nominal value Vnom. The invention also relates to a radiation source.
Claims31
A circuit unit (8) for a radiation-producing semiconductor unit (2), wherein during operation a forward voltage Uf is applied to the radiation-producing semiconductor unit (2) and the radiation-producing semiconductor unit (2) has a forward current If flowing through it, wherein
- the circuit unit (8) regulates the forward current If such that an actual value Vact, which is dependent on the forward current If and the forward voltage Uf, assumes a prescribed setpoint value Vset
- wherein the forward current If is a clocked current;
- the circuit unit (8) has an actuation unit (4) and an evaluation unit (3);
- and wherein the evaluation unit (3) has an averaging element (2) for the purpose of ascertaining an average forward current If.
A circuit unit (8) for a radiation-producing semiconductor unit (2), wherein
- during operation a forward voltage Uf is applied to the radiation-producing semiconductor unit (2) and the radiation-producing semiconductor unit (2) has a forward current If flowing through it, wherein the circuit unit (8) regulates the forward current If such that an actual value Vact, which is dependent on the forward current If and the forward voltage Uf, assumes a prescribed setpoint value Vset;
- wherein the circuit unit (8) has an actuation unit (4) and an evaluation unit (3) and, wherein the actuation unit (4) comprises a voltage converter (21).
Dependencies are inferred from the claim text.