Method For Adjusting A Dc Switching-mode Power Supply With A Transformer Having Multiple Output Voltages, Corresponding Power Supply And Use

The invention relates to the regulation of a DC switching-mode power supply (29) with several voltage outputs (V1, V2, V3, V4). The power supply includes a transformer (2) with multiple output voltages. The method is of the type for controlling a duty cycle of a chopper (5, 6) of a transformer prima...

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Bibliographic Details
Main Authors SARDAT PIERRE, LEON JEAN-FRANCOIS
Format Patent
LanguageChinese
English
Published 16.03.2016
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:The invention relates to the regulation of a DC switching-mode power supply (29) with several voltage outputs (V1, V2, V3, V4). The power supply includes a transformer (2) with multiple output voltages. The method is of the type for controlling a duty cycle of a chopper (5, 6) of a transformer primary current in dependence on a sum of output voltages obtained by means of an adder with resistors (22, 23 , 27, 32, 24). According to the invention, the output voltages are controlled so that a sum of relative errors signed output voltages versus nominal voltages tend towards zero value, and the resistance values of the adder may be calculated, so that for at least one power supply voltage output, they dissipate a given percentage of the total power supplied by the output voltage, in order to improve performance at minimum load of the output voltage .
Bibliography:Application Number: CN201510566463