{
  "$type": "site.standard.document",
  "description": "Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter…",
  "path": "/patents/1400033",
  "publishedAt": "2025-10-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L1/00",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor. The failure isolation module is turned on when the output filter capacitor is charged by the first battery and a voltage of the output filter capacitor is greater than or equal to a second preset voltage, so that the voltage conversion module converts a low-voltage direct current output by the first battery into a high-voltage direct current to charge a high-voltage bus capacitor. In the embodiments of this application, reliability of a power supply circuit on a vehicle is improved.",
  "title": "VOLTAGE CONVERSION CIRCUIT, CONTROL METHOD, DC/DC CONVERTER AND DEVICE"
}