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In this paper, the fundamental principle of bipolar process-based current-controlled PWM switching power supply is presented. The advantages of current-controlled PWM switching power supply are pointed out, and the design, operational principle, and layout of major functional units of the circuit are briefly described. The operating frequency of the circuit is up to 1MHz. The current-controlled PWM...
For PWM DC-DC converters, keeping the output voltage steady is very important. When the input voltage has a step change, up impulse or down impulse voltage will occur in the output. Both the magnitude and the duration time of the over voltage are severely influencing to the whole system, which will destroy or disorder the circuit. Step-down converter is used as an example to investigate the input...
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