Patent ID: 9166499
Filing Date: 2015-10-20
Classification: H02M,H03K

Abstract:
1. An electronic circuit operating based on an isolated switching power source that partitions a circuit region thereof into an input circuit region in which a power source lies and an output circuit region, the input circuit region being electrically isolated from the output circuit region; and outputs, via a switching element, power supplied from the power source to the output circuit region, the electronic circuit comprising: a first circuit region electrically connected to the input circuit region; a second circuit region electrically connected to the output circuit region; and an integrated circuit comprising: the electronic circuit further comprising: a duty signal outputting module configured to convert the value of the parameter indicative of the output power into a cyclic duty signal, and to output the duty signal to the transferring module, the cyclic duty signal having a duty cycle representing a ratio of on duration for the switching element to a total duration for each cycle, the duty cycle having a predetermined duty range defined between a lower limit and an upper limit inclusive, the transferring module being configured to transfer the cyclic duty signal to the operating signal generating module as the first information, the isolated switching power source having a predetermined voltage range of the output power defined between a lower limit voltage and an upper limit voltage inclusive, the predetermined voltage range of the output power being associated with the predetermined duty range of the duty signal, the duty cycle of the duty signal output from the duty signal outputting module being set to a value within a first part of the predetermined duty range of the duty signal, the information outputting module being configured to, if it is determined that there is an abnormality associated with the target device, output, to the transferring module, the duty signal as the abnormality information, the duty cycle of the duty signal output from the information outputting module being set to a value within a second part of the predetermined duty range of the duty signal, the second part of the predetermined duty range being non-overlapping with the first part of the predetermined duty range.