1. A pre-regulated charge pump to generate a voltage, comprising:
a charge pump comprising a plurality of stages and one or more diodes, configured to generate an output voltage at an output terminal based on an input voltage and a number of stages; and
a pre-regulator stage configured to adjust the input voltage to the charge pump to compensate for one or more voltage drops associated with the one or more charge pump diodes, comprising a feedback circuit from an output of the pre-regulator stage to an input thereof, the feedback circuit comprising a compensation diode having an anode coupled to the input voltage to the charge pump and a voltage divider, the feedback circuit being configured to approximate a value of a load current of the charge pump through the compensation diode.
2. A pre-regulated charge pump as defined in claim 1, wherein the pre-regulator stage further comprises a voltage regulator, configured to adjust the input voltage based on a feedback voltage indicative of voltage drops over the charge pump diodes.
3. A pre-regulated charge pump as defined in claim 2, wherein the voltage divider comprises a plurality of resistors.
4. A pre-regulated charge pump as defined in claim 2, wherein the voltage regulator is configured to adjust the input voltage based on a reference voltage.
5. A pre-regulated charge pump as defined in claim 2, wherein the voltage regulator is a low-dropout regulator.
6. A pre-regulated charge pump as defined in claim 1, wherein the pre-regulator stage is configured to decrease the input voltage in response to an increase in temperature.
7. A pre-regulated charge pump as defined in claim 1, wherein each charge pump stage comprises a blocking diode.
8. A pre-regulated charge pump as defined in claim 7, wherein each charge pump stage further comprises a switching capacitor, and the charge pump stages are configured to charge the switching capacitors alternately in series based on a first charging signal and a second charging signal.
9. A pre-regulated charge pump as defined in claim 1, wherein the charge pump is configured as a Dickson charge pump.
10. A pre-regulated charge pump as defined in claim 1, wherein the feedback diode is configured to provide a voltage drop substantially equal to each of one or more voltage drops associated with one or more of the charge pump diodes.
11. A pre-regulated charge pump to generate a voltage, comprising:
means for selectively charging and discharging a plurality of multiplier stages to generate an output voltage based on an input voltage;
means for compensating for diode losses caused by the plurality of multiplier stages;
means for regulating the input voltage based on a reference voltage and a feedback voltage; and
diode means having an anode coupled to the input voltage and a diode current approximately equal to a load current of the means for selectively charging and discharging a plurality of multiplier stages for providing the feedback voltage based on the input voltage and the diode losses.
12. A pre-regulated charge pump as defined in claim 11, further comprising means for supplying charge to the plurality of multiplier stages.
13. A pre-regulated charge pump as defined in claim 11, wherein one or more of the multiplier stages is selectively charged by a previous multiplier stage via a first blocking diode and selectively charges another multiplier stage via a second blocking diode.
14. A pre-regulated charge pump as defined in claim 11, wherein the diode losses vary with temperature, and the input voltage is substantially constant despite variations in temperature.
15. A pre-regulated charge pump as defined in claim 11, wherein the means for providing the feedback voltage comprises a diode configured to compensate for the diode losses caused by the plurality of multiplier stages, and a voltage divider.
16. A pre-regulated charge pump as defined in claim 15, wherein the voltage divider comprises one or more resistors configured to approximate a current through the plurality of multiplier stages.
17. A pre-regulated charge pump to generate a high voltage, comprising:
a Dickson charge pump comprising a plurality of multiplier stages, configured to generate an output voltage at an output terminal based on an input voltage and a number of stages, wherein each multiplier stage comprises a blocking diode and a charging capacitor; and
a pre-regulator configured to adjust the input voltage, comprising:
a reference generator to generate a reference voltage;
a feedback circuit configured to provide a feedback voltage based on the input voltage; and
a low-dropout regulator configured to generate the input voltage based on the reference voltage and a feedback circuit, wherein the feedback circuit comprises a diode having an anode coupled to the input voltage of the Dickson charge pump and a voltage divider, the feedback circuit being configured to have a current through the diode approximately equal to a load current of the Dickson charge pump to cause the low-dropout regulator to adjust the input voltage to compensate for voltage drops of the blocking diodes.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A fiber optic network device comprising:
an input port adapted to receive a multi-fiber cable having active optical fibers designated in a consecutive sequence;
a first plurality of optical fibers disposed within the fiber optic network device and extending from the input port, wherein the first plurality of optical fibers align to a first section of the consecutive sequence;
a second plurality of optical fibers disposed within the fiber optic network device and extending from the input port, wherein the second plurality of optical fibers align to a second section of the consecutive sequence;
a plurality of drop ports opening into the fiber optic network device, wherein the plurality of drop ports are adapted to optically couple ones of the first plurality of optical fibers to at least one drop cable external to the fiber optic network device according to a first port mapping scheme; and,
a pass-through port wherein the pass-through port is adapted to optically couple the second plurality of optical fibers to a second fiber optic network device through a multi-fiber adapter having a plurality of connection ports, and wherein the second plurality of optical fibers optically connect to the plurality of connection ports in a central alignment at the pass-through port according to a second port mapping scheme.
2. The fiber optic network device of claim 1, wherein the first section comprises a first four optical fibers in sequence in the consecutive sequence.
3. The fiber optic network device of claim 2, wherein the second section comprises a next eight optical fibers in sequence adjacent the first section in the consecutive sequence.
4. The fiber optic network device of claim 2, wherein the second section comprises a next four optical fibers in sequence adjacent the first section in the consecutive sequence.
5. The fiber optic network device of claim 1, wherein the first section comprises a first six optical fibers in sequence in the consecutive sequence.
6. The fiber optic network device of claim 5, wherein the second section comprises a next six optical fibers in sequence adjacent the first section in the consecutive sequence.
7. The fiber optic network device of claim 1, further comprising a third plurality of optical fibers disposed within the fiber optic network device and extending from the input port, wherein the third plurality of optical fibers align to a third section of the consecutive sequence.
8. The fiber optic network device of claim 7, wherein the first section comprises a first four optical fibers in sequence in the consecutive sequence.
9. The fiber optic network device of claim 7, wherein the second section comprises a next four optical fibers in sequence adjacent the first section in the consecutive sequence.
10. The fiber optic network device of claim 7, wherein the third section comprises a next four optical fibers in sequence adjacent the second section in the consecutive sequence.
11. The fiber optic network device of claim 1, wherein the first section comprises first in sequence four optical fibers in the consecutive sequence, and wherein a first one of the plurality of drop ports optically couples two of the first four optical fibers to a first two drop cables through a multi-fiber adapter seated in the first one of the plurality of drop ports.
12. The fiber optic network device of claim 11, wherein a second one of the plurality of drop ports optically couples the other two of the first four optical fibers to a second two drop cables, through a multi-fiber adapter seated in the second one of the plurality of drop ports.
13. A fiber optic network, comprising:
a first fiber optic network device, comprising a terminal field having a plurality of connection ports in a consecutive sequence, wherein the connection ports are adapted to receive and terminate optical fibers; and
a second fiber optic network device, comprising,
an input port adapted to receive a first multi-fiber cable having active optical fibers in the consecutive sequence;
a first plurality of optical fibers disposed within the second fiber optic network device and extending from the input port, wherein the first plurality of optical fibers align to a first section of the consecutive sequence;
a second plurality of optical fibers disposed within the second fiber optic network device and extending from the input port, wherein the second plurality of optical fibers align to a second section of the consecutive sequence;
a third plurality of optical fibers disposed within the second fiber optic network device and extending from the input port, wherein the third plurality of optical fibers align to a third section of the consecutive sequence;
a first plurality of drop ports opening into the second fiber optic network device, wherein the plurality of drop ports are adapted to optically couple ones of the first plurality of optical fibers to at least one drop cable external to the second fiber optic network device according to a first port mapping scheme; and,
a first pass-through port wherein the first pass-through port is adapted to optically couple the second plurality of optical fibers to a third fiber optic network device through a multi-fiber adapter having a plurality of connection ports, and wherein the second plurality of optical fibers optically connect to the plurality of connection ports in a central alignment at the first pass-through port according to a second port mapping scheme;
a second pass-through port wherein the second pass-through port is adapted to optically couple the third plurality of optical fibers to a fourth fiber optic network device through a multi-fiber adapter having a plurality of connection ports, and wherein the third plurality of optical fibers optically connect to the plurality of connection ports in a central alignment at the second pass-through port according to a third port mapping scheme.
14. The fiber optic network of claim 13, wherein the first plurality of optical fibers comprises four optical fibers, and wherein each of the four optical fibers extend to respective ones of the plurality of drop ports.
15. The fiber optic network of claim 13, wherein the first plurality of optical fibers comprises six optical fibers, and wherein each of the six optical fibers extend to respective ones of the plurality of drop ports.
16. The fiber optic network of claim 13, wherein a pair of the first plurality of optical fibers extend to one of the plurality of drop ports.
17. The fiber optic network of claim 16, wherein the pair of the first plurality of optical fibers extend to one of the plurality of drop ports.
18. The fiber optic network of claim 13, wherein the third fiber optic network device, comprises,
an input port adapted to receive a multi-fiber cable;
a fourth plurality of optical fibers disposed within the third fiber optic network device and extending from the input port, wherein the fourth plurality of optical fibers align to the second section of the consecutive sequence;
a second plurality of drop ports opening into the third fiber optic network device, wherein the second plurality of drop ports are adapted to optically couple ones of the fourth plurality of optical fibers to at least one drop cable external to the third fiber optic network device, according to a fourth port mapping scheme.
19. The fiber optic network of claim 18, wherein the fourth fiber optic network device, comprises,
an input port adapted to receive a multi-fiber cable;
a fifth plurality of optical fibers disposed within the fourth fiber optic network device and extending from the input port, wherein the fifth plurality of optical fibers align to the third section of the consecutive sequence;
a third plurality of drop ports opening into the fourth fiber optic network device, wherein the third plurality of drop ports are adapted to optically couple ones of the fifth plurality of optical fibers to at least one drop cable external to the fourth fiber optic network device, according to a fifth port mapping scheme.
20. The fiber optic network of claim 19, wherein the fourth port mapping scheme and the fifth port mapping scheme are the same.
21. A fiber optic network, comprising:
a first fiber optic network device, comprising a terminal field having a plurality of connection terminals in a consecutive sequence, wherein the connection terminals are adapted to receive and terminate optical fibers in the consecutive sequence;
a second fiber optic network device, comprising,
an input port adapted to receive a first multi-fiber cable having active optical fibers in the consecutive sequence;
a first plurality of optical fibers disposed within the fiber optic network device and extending from the input port, wherein the first plurality of optical fibers align to a first section of the consecutive sequence;
a second plurality of optical fibers disposed within the fiber optic network device and extending from the input port, wherein the second plurality of optical fibers align to a second section of the consecutive sequence;
a first plurality of drop ports opening into the fiber optic network device, wherein the plurality of drop ports are adapted to optically couple ones of the first plurality of optical fibers to at least one drop cable external to the fiber optic network device according to a first port mapping scheme; and,
a first pass-through port wherein the first pass-through port is adapted to optically couple the second plurality of optical fibers to a second fiber optic network device through a multi-fiber adapter having a plurality of connection ports, and wherein the second plurality of optical fibers optically connect to the plurality of connection ports in a central alignment at the first pass-through port according to a second port mapping scheme; and
a third fiber optic network device, comprising,
an input port adapted to receive a multi-fiber cable;
a third plurality of optical fibers disposed within the third fiber optic network device and extending from the input port, wherein the third plurality of optical fibers align to a third section of the consecutive sequence;
a fourth plurality of optical fibers disposed within the third fiber optic network device and extending from the input port, wherein the fourth plurality of optical fibers align to a fourth section of the consecutive sequence;
a second plurality of drop ports opening into the third fiber optic network device, wherein the second plurality of drop ports are adapted to optically couple ones of the third plurality of optical fibers to at least one drop cable external to the third fiber optic network device, according to a third port mapping scheme; and,
a second pass-through port wherein the second pass-through port is adapted to optically couple the second plurality of optical fibers to a fourth fiber optic network device through a multi-fiber adapter having a plurality of connection ports, and wherein the fourth plurality of optical fibers optically connect to the plurality of connection ports in a central alignment at the second pass-through port according to a fourth port mapping scheme.
22. A method of installing fiber optic network devices in a fiber optic network, comprising:
providing a first fiber optic network device comprising a terminal field having a plurality of connection terminals, wherein the connection terminals are adapted to receive and terminate optical fibers;
providing a second fiber optic network device having a first plurality of drop ports, wherein the first plurality of drop ports are adapted to optically couple ones of a first plurality of optical fibers disposed in the second fiber optic network device to at least one drop cable external to the second fiber optic network device according to a first port mapping scheme;
terminating at the connection terminal the first plurality of optical fibers;
activating optical signaling between the connection terminal and the first plurality of drop ports through the first plurality of optical fibers;
providing a third fiber optic network device having a second plurality of drop ports, wherein the second plurality of drop ports are adapted to optically couple ones of a second plurality of optical fibers disposed in the third fiber optic network device to at least one drop cable external to the third fiber optic network device;
terminating at the connection terminal the second plurality of optical fibers while the optical signaling between the connection terminal and the first plurality of drop ports is active; and
activating optical signaling between the connection terminal and the second plurality of drop ports through the second plurality of optical fibers.
23. The method of claim 22, wherein the first plurality of optical fibers align to a first section of the consecutive sequence.
24. The method of claim 22, wherein the first plurality of drop ports are adapted to optically couple the ones of the first plurality of optical fibers according to a first port mapping scheme.
25. The method of claim 22, wherein the second plurality of optical fibers align to a second section of the consecutive sequence.
26. The method of claim 22, wherein the second plurality of drop ports are adapted to optically couple the ones of the second plurality of optical fibers according to a second port mapping scheme.