Ultra-wide input range switching power supply for circuit protection devices
First Claim
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1. A wide input range switching power supply apparatus for a circuit protection device for protecting an external circuit, the power supply comprising:
- a supply input;
a rectifier circuit for rectifying an AC line voltage at the supply input;
a switch-mode DC-to-DC converter coupled to the rectifier circuit for providing a low voltage DC power to a load at a supply output, the converter comprising a switch having an open state and a closed state and a control circuit for controlling the state of the switch; and
a solenoid coil also operative for driving a trip mechanism of said circuit protection device;
wherein the control circuit is operatively coupled to receive operating power from the supply output.
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Abstract
A wide input range switching power supply for a circuit protection device includes a rectifier circuit for rectifying an AC line voltage at a supply input, and a switch-mode DC-to-DC converter coupled to the rectifier circuit for providing a low voltage DC power to a load at a supply output. The converter includes a switch having an open state and a closed state and a control circuit for controlling the state of the switch. The control circuit is operatively coupled to receive operating power from the supply output.
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Citations
33 Claims
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1. A wide input range switching power supply apparatus for a circuit protection device for protecting an external circuit, the power supply comprising:
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a supply input;
a rectifier circuit for rectifying an AC line voltage at the supply input;
a switch-mode DC-to-DC converter coupled to the rectifier circuit for providing a low voltage DC power to a load at a supply output, the converter comprising a switch having an open state and a closed state and a control circuit for controlling the state of the switch; and
a solenoid coil also operative for driving a trip mechanism of said circuit protection device;
wherein the control circuit is operatively coupled to receive operating power from the supply output. - View Dependent Claims (2, 3, 4)
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5. A wide input range switching power supply for a circuit protection device, the power supply comprising:
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a rectifier circuit for rectifying an AC line of voltage; and
a switch-mode DC-to-DC converter coupled to the rectifier circuit for providing a low voltage DC power to a load, the converter comprising a switch having an open state and a closed state and a control circuit for controlling the state of the switch; and
an input filter operatively coupled with the rectifier circuit, the input filter including a solenoid coil also operative for driving a trip mechanism of the circuit protection device. - View Dependent Claims (10)
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6. A circuit protection device comprising:
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a detection device for detecting a predetermined condition in a circuit to be protected;
a trip mechanism operatively coupled with said detection device for opening and closing a current path to a circuit to be protected by the circuit protection device;
a solenoid coil for energizing the trip mechanism; and
a wide input range switching power supply comprising a supply input, a rectifier circuit for rectifying an AC line voltage at the supply input, and a switch-mode DC-to-DC converter coupled to the rectifier circuit for providing a low voltage DC power to a supply output, the converter comprising a switch having an open state and a closed state, and a control circuit for controlling the state of the switch;
wherein the control circuit is operatively coupled to receive operating power from the supply output.- View Dependent Claims (7, 8, 9, 11)
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12. A circuit protection device comprising:
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a detection device for detecting a predetermined condition in a circuit to be protected;
a trip mechanism operatively coupled with said detection device for opening and closing a current path to a circuit to be protected by the circuit protection device;
a solenoid coil for energizing the trip mechanism; and
a wide input range switching power supply comprising a supply input, a rectifier circuit for rectifying an AC line voltage at the supply input, and a switch-mode DC-to-DC converter coupled to a the rectifier circuit for providing a low voltage DC power to a supply output, the converter comprising a switch having an open state and a closed state and a control circuit for controlling the state of the switch, and an input filter operatively coupled with the rectifier circuit, the input filter including the solenoid coil. - View Dependent Claims (13)
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14. A method for supplying power to a circuit protection device over a wide input range, the method comprising:
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rectifying an AC line voltage at a supply input;
providing a low voltage DC power to a load using a switch-mode DC-to-DC converter, including a switch having an open state and a closed state and a control circuit for controlling the state of the switch; and
filtering the rectified AC line voltage using a filter including a solenoid coil also operative for driving a trip mechanism of the circuit protection device. - View Dependent Claims (15)
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16. A wide input range switching power supply apparatus for a circuit protection device for protecting an external circuit, the power supply comprising:
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a supply input;
means for rectifying an AC line voltage at the supply input;
converter means coupled to the means for rectifying for providing a low voltage DC power to a supply output, the converter means comprising switch means having an open state and a closed state and control circuit means for controlling the state of the switch means; and
a solenoid coil also operative for driving a trip mechanism of the circuit protection device;
wherein the control circuit means is operatively coupled to receive operating power from the supply output. - View Dependent Claims (17, 18, 19)
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20. A wide input range switching power supply for a circuit protection device, the power supply comprising:
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means for rectifying an AC line voltage;
converter means coupled to the means for rectifying for providing a low voltage DC power to a supply output, the converter means comprising switch means having an open state and a closed state and control circuit means for controlling the state of the switch means;
wherein the control circuit means is operatively coupled to receive operating power from the supply output; and
means for filtering the rectified AC line voltage including a solenoid coil also operative for driving a trip mechanism of the circuit protection device. - View Dependent Claims (21)
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22. A circuit protection device comprising:
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trip means for opening and closing a current path to a circuit to be protected by the current protection device;
a solenoid coil for energizing the trip means; and
a wide input range switching power supply apparatus comprising a supply input, means for rectifying an AC line voltage at the supply input and converter means for providing a low voltage DC power to a supply output, the converter means comprising switch means having an open state and a closed state and control circuit means for controlling the state of the switch means;
wherein the control circuit means is operatively coupled to receive operating power from the supply output. - View Dependent Claims (23, 24, 25, 26)
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27. A method for supplying power to a circuit protection device for protecting an external circuit over a wide input range, the method comprising:
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rectifying an AC line voltage at a supply input;
providing a low voltage DC power to a supply output using a switch-mode DC-to-DC converter, including a switch having an open state and a closed state and a control circuit for controlling the state of the switch;
driving a trip mechanism of the circuit protection device; and
operatively coupling the control circuit for receiving operating power from the supply output. - View Dependent Claims (28, 29, 30, 31)
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32. A circuit protection device comprising:
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a trip means for opening and closing a current path to a circuit to be protected by the circuit protection device;
a solenoid coil for energizing the trip means; and
a wide input range switching power supply comprising means for rectifying an AC line voltage;
converter means coupled to the means for rectifying for providing a low voltage DC power to a supply output, the converter means comprising switch means having an open state and a closed state and control circuit means for controlling the state of the switch means; and
means for filtering the rectified AC line voltage including said solenoid coil. - View Dependent Claims (33)
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Specification