Montage Technology (kunshan) Co., Ltd.

Wuxi Chipown Microelectronics Co., Ltd.

Jian Yin

Haisong Li

Lixin Jiang

Hui Yu

Yang Luo

Synchronous rectification control circuit and switching power supply system are provided. The circuit includes a sampling

Synchronous rectification control circuit and switching power supply system

The present disclosure provides a switching current source circuit and a method for quickly establishing a switching current source. The switching current source circuit includes a first and a second switching current source branches connected in parallel with one end of a load. When the switching enable signal is switched, due to the charge coupling of the first and second switching current source branches, the bias voltage respectively generates bounce in the same direction as and a direction opposite to the transition direction of the switching enable signal. The two bounces cancel each other to make the current source bias voltage recover quickly when a toggle event happens. The present disclosure accelerates the establishment of current through the coupling of charges, and reduces the decoupling capacitance at the same time, thereby reducing the circuit area and saving the costs.

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Jiangsu, China

Jian Yin