http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022179532-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9fbf0d3bcffcc448d22083390dbee81c |
| 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/H02M3-335 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R19-165 |
| filingDate | 2022-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8fc9a96d43e67d478901fc9c86d229b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a628c6cf4cb45d313185666dd47e4b7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_451d7692814d43befef12128b2bee29f |
| publicationDate | 2022-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2022179532-A1 |
| titleOfInvention | Auxiliary winding measurement method and circuit |
| abstract | The present invention provides an auxiliary winding measurement method and circuit. The measurement method and circuit are based on existing circuit elements, do not need extra cost, and enable auxiliary winding clamping topology to be more practical. The method specifically comprises: clamping a measurement pin to a power supply voltage in an excitation stage, so that the current flowing into the measurement pin is proportional to an input voltage, and the accurate measurement of the input voltage is achieved; making a voltage difference between the power supply voltage and the voltage of the measurement pin fall onto one internal resistor at a demagnetization stage, then transferring the current flowing through the resistor to another internal resistor, and using a sampling and holding circuit to sample and store the voltage of the other internal resistor, thereby achieving the accurate measurement of an output voltage; and comparing the voltage of the measurement pin with the voltage of a power supply pin, thereby achieving the measurement of a voltage resonance period of a drain electrode of a main switch tube. Input under-voltage protection, input feedforward, ZVS detection, and the like can be achieved according to the input voltage; output overvoltage protection and primary-side feedback can be achieved according to the output voltage; and quasi-resonance control and the like can be achieved according to the resonance period measurement. |
| 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: 20.