Ultra-wide input range power supply for circuit protection devices
AssigneeSquare D Company
InventorsPaul A. Reid, Steven M. Meehleder
Life of this patent
Estimating the term…
Abstract
A wide input range power supply for a circuit protection and/or fault detector device includes a passive supply for providing power to a load under nominal input voltage conditions at or near the nominal line voltage with minimum power loss, and a linear regulating supply path for assisting the passive supply at an input line voltage substantially below the nominal line voltage value.
Claims28
A wide input range power supply for a circuit protection and/or fault detector device, said power supply comprising:
- a passive supply path comprising a passive supply for providing power to a load under nominal input line voltage conditions at or near the nominal line voltage with minimum power loss;
- and
- a linear regulating supply path including a linear supply for supplying power to said load during start-up and at input line voltages below a first value, and for assisting the passive supply at input line voltages substantially below the nominal line voltage value and above said first value.
A method for supplying power over a wide range of input line voltages for a circuit protection device and/or fault detection device, said method comprising:
- providing power to a load with minimum power loss using a passive supply path comprising a passive supply under nominal input voltage conditions at or near the nominal line voltage;
- providing power to said load at low input voltages below a first value using a linear regulating supply path including a linear supply;
- and
- assisting the passive supply using said linear regulating supply path at an input line voltage substantially below the nominal line voltage value and above said first value.
A system for supplying power over a wide range of input line voltages for a circuit protection device and/or fault detection device, said system comprising:
- passive supply means for providing power to a load with minimum power loss under nominal input voltage conditions at or near the nominal line voltage;
- and
- linear supply means for providing power to said load at low input voltages below a first value and for assisting the passive supply at an input line voltage substantially below the nominal line voltage value and above said first value.
A linear/passive power converter, comprising:
- a passive supply path comprising a passive supply for providing power to a load under nominal input voltage conditions at or near the nominal line voltage with minimum power loss;
- and
- a linear regulating supply path including a linear supply for supplying power to said load during strart-up and at input line voltages below a first value, and for assisting the passive supply at input line voltages substantially below the nominal line voltage value and above said first value.
Dependencies are inferred from the claim text.