Controlling Switch Mode Power Supplies to Maximize Power Efficiency
A switch-mode power supply and control circuit technology, which is used in the conversion of DC power input to DC power output, control/regulation systems, and output power conversion devices, etc.
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[0039] As will be described in detail below, the present invention proposes a control strategy for a switch mode power supply. The control strategy maintains high power efficiency and still improves output voltage response in the face of voltage transients at the input or load current transients at the output.
[0040] figure 1 A top-level block diagram of a switched-mode power supply (SMPS) 100 and a control circuit 200 is shown. The control circuit 200 is arranged to receive an input voltage V indicative of the SMPS 100 in and the output voltage V out signal of. These signals may include analog signals of the voltage itself or digital signals containing information defining the voltage value measured by a measuring device (not shown). Based on the signal indicative of the SMPS output voltage or the signal indicative of the SMPS input voltage and the signal indicative of the output SMPS voltage (depending on the mode of operation discussed further below), the control circ...
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