Method of forming a bus coupler and structure therefor
AssigneeSemiconductor Components Industries, LLC
InventorFrederiek Ronald STEVENS
Life of this patent
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Abstract
In one embodiment, a bus coupled includes a voltage control circuit configured to selectively conduct a current from the first current source away from an output of the coupler to regulate a voltage drop across the another current source to a first value. An embodiment of a method of forming a bus coupler may include configuring a circuit to store energy from the input into a first storage element in response to receiving an active portion of an input signal, and to transfer energy from the storage element to the output after termination of the active portion of the input signal.
Claims20
A bus coupler comprising:
- a first input configured for coupling to a first line of a bus;
- a second input configured for coupling to a second line of the bus wherein the bus coupler is configured to receive an input signal from the bus on the first input;
- an output configured to have an output voltage of the bus coupler formed at the output;
- a first voltage control circuit having a first current source coupled to receive the input signal, the first current source configured to form a first current and couple the first current to the output, the first voltage control circuit configured to control a value of the first current to regulate the output voltage to a first value;
- and
- a second voltage control circuit configured to selectively conduct a second current from the first current source away from the output to regulate a voltage drop across the first current source to a second value.
A method of forming a bus coupler comprising:
- configuring the bus coupler to receive input signals on a first input of the bus coupler;
- forming the bus coupler to form a first current to flow from the first input to an output of the bus coupler;
- configuring a first circuit to control a value of the first current in response to a difference between a voltage at the first input and a voltage at the output;
- and
- configuring a second circuit to store energy from the first current in a first storage element in response to an active portion of a first input signal of the input signals, and to transfer energy from the first storage element to the output after termination of the active portion of the first input signal.
A method of forming a bus coupler comprising:
- configuring the bus coupler to receive an input signal on a first input of the bus coupler;
- forming a first circuit to form a first current to flow from the first input to an output of the bus coupler to regulate an output voltage at the output;
- coupling a second circuit to receive the input signal, and configuring the second circuit to form a first value of a second current to flow to the output;
- and
- configuring the second circuit to selectively decrease the second current to a second value in response to an active portion of the input signal, and configuring the second circuit to selectively increase the second current to a third value in response to termination of the active portion of the input signal wherein the third value subsequently decreases toward the first value.
Dependencies are inferred from the claim text.