POWER SUPPLY CONTROL SYSTEM FOR PARALLEL OPERATION

摘要

PURPOSE:To stabilize the output voltage generated from all switching power supply modules by sending the error data to these power supply modules via a parallel operating power supply control module. CONSTITUTION:In a parallel operating power supply module 3, the reference data I5 and I6 are inputted to the D/A conversion parts 38 and 39 respectively and converted into the analog signals. These analog signals are inputted to the error amplifying parts 41 and 42. At the same time, the input voltage to be applied to a logical device 2 is also inputted to the parts 41 and 42 via a power terminal 11. This input voltage is compared with the data I5 and I6 respectively for production of the error data. These error data are inputted to the drive pulse generating parts 51 and 61. Then the parts 51 and 61 which are driving the DC/DC converters 50 and 60 based on the pulse signals received from a basic pulse generating part 43 control the width of the drive pulse based on the error data given from the parts 41 and 42, respectively. As a result, the voltage inputted to the logical device 2 from two switching power supply modules are stabilized.