Santak Electronic (shenzhen) Co., Ltd.

Lian Zheng Electronics (shenzhen) Co., Ltd.

Yusong Ding

Zhongyong Xu

Kai Liu

Zhiwu Wang

David Zheng

Zhiwei Liao

The present invention provides a power factor correction (PFC) and DC-DC multiplexing converter and an uninterruptible power supply including the same. The multiplexing converter includes a multiplexing bridge arm and a battery hookup bridge arm. During power supply of a battery, the converter controls one electrode of a positive electrode and a negative electrode of the battery to be alternately connected to a neutral point and one of positive and negative direct current buses that has the same polarity as the electrode, to enable a level of the electrode of the battery to synchronously and alternately rise or drop with the alternate supply of power to the positive and negative direct current buses; or controls one electrode of a positive electrode and a negative electrode of the battery to be constantly connected to the neutral point. A current converter of the present invention has less battery charge-discharge potential jumps, higher level of integration, lower costs, and better electromagnetic compatibility characteristics, and is more applicable to a single-battery uninterruptible power supply system.

Power factor correction and DC-DC multiplexing converter and uninterruptible power supply including the same

The present invention provides a bidirectional DC-DC converter. The bidirectional DC-DC converter includes a first switching tube connected in antiparallel to a first diode; a second switching tube connected in antiparallel to a second diode; a third switching tube connected in antiparallel to a third diode; a fourth switching tube connected in antiparallel to a fourth diode; and a first inductor and a second inductor, where an anode of the first diode and a cathode of the second diode are connected to form a first node, an anode of the second diode and a cathode of the third diode are connected to a neutral point, an anode of the third diode and a cathode of the fourth diode are connected to form a second node, and one end of the first inductor and one end of the second inductor are respectively connected to the first node and the second node. The bidirectional DC-DC converter in the present invention has high conversion efficiency.

Bidirectional DC-DC converter

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Shenzhen, China

Yusong Ding