earticle

영어

A family of independent-regulation multiple-output (IRMO) dc-dc flyback converters was researched in this paper, and its control in discontinuous conduction mode (DCM) was achieved by using pulse-train (PT) control method. To avoid cross-regulation between each output of multiple output flyback converters, time-multiplexing scheme is used to determine which output is controlled in the time interval of time-multiplexing signal. Error amplifier and corresponding compensators as required by conventional pulse width modulation (PWM) technique were not used in PT control. The multiple output flyback converters with PT control proposed in this paper is simple and enjoys fast dynamic response. It can achieve constant voltage output, and can also achieve constant current output, which provides an effective solution for multiple constant current output application, especially in LED backlight application.