{
  "$type": "site.standard.document",
  "description": "A DC-DC conversion switching power supply is provided, including a plurality of DC-DC converters (1a, 1b, 1c) connected in parallel. A three-times frequency waveform which is generated from a three-times frequency waveform generation circuit (5), and is in sync with an oscillation frequency of the…",
  "path": "/patents/1095859",
  "publishedAt": "2003-05-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J1/102",
    "MATSUSHITA ELECTRIC INDUSTRIAL CO LTD [JP]"
  ],
  "textContent": "A DC-DC conversion switching power supply is provided, including a plurality of DC-DC converters (1a, 1b, 1c) connected in parallel. A three-times frequency waveform which is generated from a three-times frequency waveform generation circuit (5), and is in sync with an oscillation frequency of the DC-DC converters is superimposed on a control voltage (22o) which is compared with a switching current signal in a current mode control circuit (2) for controlling the DC-DC converters, or a signal proportional to the switching current signal to control a switching current pulse. Since superimposing the three-times frequency waveform which falls over one period increases the control voltage decreased by switch-on noise of the other DC-DC converter, malfunction at a switch-on phase of the other DC-DC converter, caused by the decrease of the control pulse width, is prevented.",
  "title": "Switching power supply with parallel connected DC-DC converters"
}