Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2008-08-07
2009-12-01
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
07626373
ABSTRACT:
A current sink circuit is disclosed. An apparatus according to aspects of the present invention includes a sensing element, a pass element coupled to the sensing element and a setting element coupled to the pass element. The setting element provides both a voltage threshold level and a current regulation reference. The pass element is to pass current conducted through the current sink circuit in response to the setting element. The current conducted through the current sink circuit is substantially zero when a voltage applied across the current sink circuit is below the voltage threshold level. A signal generated by the sensing element is regulated in response to the current regulation reference by regulating a current conducted through the pass element when a voltage applied across the current sink circuit is above the voltage threshold level.
REFERENCES:
patent: 5014178 (1991-05-01), Balakrishnan
patent: 5754038 (1998-05-01), Durec et al.
patent: 6147883 (2000-11-01), Balakrishnan et al.
patent: 6738277 (2004-05-01), Odell
patent: 6795321 (2004-09-01), Balakrishnan et al.
patent: 6949972 (2005-09-01), Knight
patent: 7248097 (2007-07-01), Montgomery
patent: 7443153 (2008-10-01), Mayell
patent: 0 529 633 (1993-03-01), None
“LTC4257—IEEE 802.3af PD, Power Over Ethernet Interface Controller,” Linear Technology Corporation, 2003, pp. 1-20.
“IEEEStd 802.3af™: IEEE Standard for Information Technology—Telecommunications and Information Exchange Between Systems—Local and Metropolitan Area Networks—Specific Requirements; Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications; Amendment: Data Terminal Equipment (DTE) Power via Media Dependent Interface (MDI),” IEEE Computer Society, Jun. 18, 2003, pp. i-x, 1-121.
“MAX5941A/MAX5941B—IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices,” Maxim Integrated Products, Rev. 0, Oct. 2003, pp. 1-24.
“HV110—Power-over-Ethernet Interface PD Controller Meets IEEE8O2.3af™ Standard,” Supertex Inc., Rev. 1.2, Dec. 15, 2003, pp. 1-10.
“TPS2375; TPS2376; TPS2377—IEEE 802.3af PoE Powered Device Controllers,” Texas Instruments, Inc., Apr. 2004, Revised Sep. 2004, pp. 1-18 and addendum.
“Design Idea DI-88—DPA-Switch® PoE Detection and Classification (Class 0-3) Interface Circuit,” Power Integrations, Inc., Aug. 2005, pp. 1-2.
EP 06 25 6396—European Search Report, dated Aug. 20, 2007 (Publication No. EP 1 840 693).
Berhane Adolf
Blakely , Sokoloff, Taylor & Zafman LLP
Power Integrations, Inc.
LandOfFree
Method and apparatus for a voltage triggered current sink... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for a voltage triggered current sink..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for a voltage triggered current sink... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4142358