{
  "$type": "site.standard.document",
  "description": "A system includes a transformer having a primary winding and an auxiliary winding at a primary side of an AC-DC converter, the auxiliary winding reflecting an output voltage of a secondary winding of the transformer. A primary side controller includes an over-voltage protection (OVP) pin and an OVP…",
  "path": "/patents/1321120",
  "publishedAt": "2022-06-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02M1/32",
    "Cypress Semiconductor Corporation"
  ],
  "textContent": "A system includes a transformer having a primary winding and an auxiliary winding at a primary side of an AC-DC converter, the auxiliary winding reflecting an output voltage of a secondary winding of the transformer. A primary side controller includes an over-voltage protection (OVP) pin and an OVP circuit. A voltage divider includes a first resistor coupled between the auxiliary winding and the OVP pin and a second resistor coupled between the first resistor and a ground. The voltage divider provides, to OVP pin, a reduced voltage that is proportional to the output voltage. In absence of a pulse signal from a secondary side controller, the OVP circuit turns off a gate driver that drives a primary switch in response to the OVP voltage exceeding a reference OVP voltage. The primary switch is coupled between the primary winding of the transformer and the ground.",
  "title": "OUTPUT VOLTAGE PROTECTION FROM PRIMARY SIDE WHILE INITIATING SECONDARY SIDE CONTROLLER OF AC-DC CONVERTER"
}