http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112769340-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02B70-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R19-16538 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02M3-33523 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R19-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02M3-335 |
| filingDate | 2021-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112769340-B |
| titleOfInvention | A kind of auxiliary winding detection method and circuit |
| abstract | The invention provides an auxiliary winding detection method and circuit. Based on the existing circuit components, the auxiliary winding clamping topology is more practical without additional cost. Specifically, the detection pin is clamped to the power supply voltage in the excitation stage, thereby The current flowing into the detection pin is proportional to the input voltage to achieve accurate detection of the input voltage; by making the voltage difference between the supply voltage and the detection pin voltage fall on an internal resistor in the degaussing stage, and then transfer the current flowing through the resistor to On the other internal resistor, the sample and hold circuit is used to save the voltage sample on the other internal resistor to realize the accurate detection of the output voltage; by comparing the voltage of the detection pin and the voltage of the power supply pin, the drain voltage of the main switch tube is realized. Detection of the resonance period. Input undervoltage protection, input feedforward, ZVS detection, etc. can be realized based on the input voltage; output overvoltage protection and primary feedback can be realized based on the output voltage; quasi-resonant control can be realized based on the resonance period detection. |
| priorityDate | 2021-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.