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US 2026/0149349 A1Published application
Power converter and control circuit and control method thereof
AssigneeJoulwatt Technology Co., Ltd.
InventorsYang YANG, Changwei GONG
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AssigneeJoulwatt Technology Co., Ltd.
InventorsYang YANG, Changwei GONG
Estimating the term…
The present disclosure provides a power converter and control circuit and control method thereof. A reference pulse signal is generated by modulating switching frequency information and/or current reference information on a secondary side of the power converter. The pulse signal is transmitted to a primary side through a digital isolator, so that a primary-side control signal could be obtained by demodulating the reference pulse signal on the primary side, and control of a switching state of a power transistor on the primary side is achieved. Wherein, the present disclosure uses special modulation and demodulation settings to transmit several information between the secondary side and primary side through a single channel, the number of isolation devices used between the primary side and secondary side is reduced, system structure is simplified, and system costs are reduced.
A control circuit of a power converter, the power converter comprising a power conversion unit and the control circuit, the power conversion unit comprising a transformer, a power transistor coupled to a primary winding of the transformer, and a rectifier transistor coupled to a secondary winding of the transformer, the control circuit comprising:
A control method of a power converter, the power converter comprising a power conversion unit, the power conversion unit comprising a transformer, a power transistor coupled to a primary winding of the transformer, and a rectifier transistor coupled to a secondary winding of the transformer, the control method comprising:
Dependencies are inferred from the claim text.