Primary side regulated power supply system with constant current output
AssigneeFairchild Semiconductor Corporation
InventorMichael Weirich
Life of this patent
Estimating the term…
Abstract
According to an embodiment, a power supply system has a primary side and a secondary side. An input terminal on the primary side is operable to receive an input voltage. An output terminal on the secondary side is operable to be connected to a load for providing current thereto. Circuitry is provided which is operable to regulate the power supply system from the primary side so that the current provided to the load at the output terminal is substantially constant.
Claims30
A power supply system comprising:
- an input terminal operable to receive an input voltage;
- a transformer coupled to the input terminal and defining a primary side and a secondary side;
- an output terminal coupled to the secondary side of the transformer and connectable to a load for providing current thereto;
- and
- means for regulating the power supply system from the primary side so that the current provided to the load at the output terminal is substantially constant.
A power supply system comprising:
- an input terminal operable to receive an input voltage;
- a transformer coupled to the input terminal and defining a primary side and a secondary side;
- an output terminal coupled to the secondary side of the transformer and connectable to a load for providing current thereto;
- a control circuit coupled to the transformer and operable to control current flowing through the transformer;
- and
- a feedback circuit coupled to the control circuit and the transformer, the feedback circuit operable to support regulation by the control circuit from the primary side so that the current provided to the load at the output terminal is substantially constant.
A power supply system having a primary side and a secondary side, the system comprising:
- an input terminal on the primary side operable to receive an input voltage;
- an output terminal on the secondary side operable to be connected to a load for providing current thereto;
- and
- circuitry operable to regulate the power supply system from the primary side so that the current provided to the load at the output terminal is substantially constant.
Dependencies are inferred from the claim text.