US Patent No: 8,188,615
Number of patents in Portfolio can not be more than 2000
Integrated circuit adapted to be selectively AC or DC coupled
Stats
-
May 29, 2012
Issued date -
Sep 18, 2009
filing date -
12/562,703
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
An integrated circuit is adapted to be selectively AC or DC coupled to an external device at a coupling point. The integrated circuit includes a first connector connected to the coupling point by way of a coupling capacitor for AC coupling, a second connector connected to the coupling point for DC coupling, and a switch to selectively short the first and second connectors and thereby the coupling capacitor, when the integrated circuit is DC coupled to the device. The switch may be a MOSFET bridge comprising a switch control MOSFET interconnected between the first and second connectors, with the switch control MOSFET receiving at its gate a mode status signal for turning on the switch control MOSFET and thereby shorting the MOSFET bridge when the integrated circuit is DC coupled to the external device. The MOSFET bridge also includes a number of dynamically biased nMOSFETs connected in series with the switch control MOSFET in order to protect switch control MOSFET from high external supply voltages, and a number of dynamically biased pMOSFETs connected in parallel with the switch control MOSFET.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 2010/0176,848 INPUT/OUTPUT BUFFER CIRCUIT | 1 | 2009 | |
|
|
|||
| 2010/0283,439 EFFICIENT SWITCH CASCODE ARCHITECTURE FOR SWITCHING DEVICES | 2 | 2009 | |
|
|
|||
| 7,053,657 Dynamically biased wide swing level shifting circuit for high speed voltage protection input/outputs | 7 | 2004 | |
|
|
|||
| 5,864,457 System and method for controlling current flow in an AC adapter | 13 | 1997 | |
|
|
|||
| 7,719,137 DC-DC switching converter device | 1 | 2004 | |
|
|
|||
| 6,968,413 Method and system for configuring terminators in a serial communication system | 7 | 2002 | |
|
|
|||
| 2009/0322,157 RF AC/DC Coupling Circuit Using General Purpose Solid-State Relay | 1 | 2009 | |
|
|
|||
| 7,533,208 Hot plug control apparatus and method | 3 | 2005 | |
|
|
|||
| 6,574,695 System and method for providing hot swap capability using existing circuits and drivers with minimal changes | 24 | 2000 | |
|
|
|||
| 6,253,267 Hot-plug of PCI bus using single chip | 54 | 1998 | |
|
|
|||
| 7,138,730 Topologies for multiple energy sources | 9 | 2002 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 29, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 29, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 29, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |