Hot swap power delivery circuit
AssigneeHewlett-Packard Development Company, L.P.
InventorsA. Michael Cherniski, James K. Koch
Life of this patent
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Abstract
A hot swap power delivery circuit. Specifically, the hot swap power delivery circuit is used for controlling current to a load. The hot swap power delivery circuit comprises a field effect transistor (FET), a ramp circuit, and a source follower feedback circuit. The FET comprises a gate, a source, and a drain. The ramp circuit is coupled to the gate of the FET, and is used for delivering current to a load that is coupled to the source of the FET. The source follower feedback circuit is coupled to the source and the gate and is used for de-linearizing an output voltage on said source affecting the delivery of the current.
Claims21
A hot swap power delivery circuit for controlling current comprising:
- a field effect transistor (FET) comprising a gate, a source, and a drain;
- a ramp circuit coupled to said gate of said FET for controlling delivery of current to a load that is coupled to said source;
- and
- a source follower feedback circuit coupled to said source and said gate for de-linearizing an output voltage on said source affecting said delivery of said current.
A hot swap power delivery circuit for controlling current comprising:
- a field effect transistor (FET) comprising a gate, a source, and a drain;
- a ramp circuit coupled to said gate of said FET for controlling delivery of current in a ramping fashion from a power supply to a load that is coupled to said source, said power supply coupled to said drain, said ramp circuit comprising a first capacitor and a current source coupled in parallel to said gate and to a ground;
- a source follower feedback circuit for de-linearizing an output voltage on said source affecting said delivery of said current, said source follower feedback circuit comprising a second capacitor coupled to said gate and said source.
A hot swap power delivery circuit for controlling current comprising:
- a field effect transistor (FET) comprising a gate, a source, and a drain;
- a ramp circuit coupled to said gate of said FET for controlling delivery of current to a load from a power supply, said load coupled to said source, said power supply coupled to said drain, said ramp circuit comprising a first capacitor and a current source coupled in parallel to said gate and to a ground;
- a resistor coupled to said source;
- and
- a second capacitor coupled to said resistor and to said gate.
Dependencies are inferred from the claim text.