http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018132321-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f678bf5411b07e4050461e0d1fda9809 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B20-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B45-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B33-0845 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B33-0815 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B37-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B44-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B37-02 |
| filingDate | 2017-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a107edb6a2cf346a232f182784a59992 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1202e318fe15ecd7933d912a60459ca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d47be9961444d9a8d69376e298813d1 |
| publicationDate | 2018-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2018132321-A1 |
| titleOfInvention | Light-emitting diode driver |
| abstract | In a LED driver, a diming control circuit receives a PWM signal and a clock signal and outputs a dimming signal and a sampling signal. A turn-on time of sampling signal is shorter than a cycle of clock signal. A first error amplifier receives a feedback voltage, a reference voltage and a dimming signal and outputs a compensating voltage. A second error amplifier receives the compensating voltage and a ramp signal and outputs a pulse voltage. A driving controller receives the dimming signal and pulse voltage and outputs a control signal. An output stage receives the control signal and an input voltage and generates an output voltage to LED strings. A minimum voltage selecting unit selects a minimum LED voltage. The first error amplifier receives the minimum LED voltage through the selectively conducted switch unit controlled by the sampling signal. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112804786-A |
| priorityDate | 2016-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.