Type - iii - switching converter - error amplifier with a rapid transient - response behavior

摘要

Transient - response - circuit for provision of a more rapid transient - response - time of an electronic device and thus less overshoot or undershoot of an output signal of the electronic device occurs when a ‘ large load - and / or line - transient " - signal to an input - and / or output terminal of the electronic device is provided, wherein the transient - response - circuit includes:a rule grinding monitoring circuit (100) for monitoring a feedback signal to an input terminal of a control stage of the electronic device is applied, and for the generation of transient - detection signals is configured to set the indicating that a detection of a ‘ large load - and / or line - transient " - signal has taken place; andan auxiliary circuit (115) in communication with a rule, grinding monitoring circuit, comprising:a switched current source (117) in communication with a rule, grinding circuit for receiving a first of the transient - detection signals for activating and deactivating of the switched current source, and the selectively with a grinding filter capacitor of the control stage is connected, in order to load the grinding filter capacitor, and an overshoot or undershoot in the case of reception of the first transient - detection signal to reduce,a switched current sink (119) in communication with a rule, grinding circuit for receiving a second of the transient - detection signals for activating and deactivating of the switched current sink, and the selectively with the grinding filter capacitor of the control stage is connected, in order to discharge the grinding filter capacitor, and an overshoot or undershoot upon receipt of the second transient - detection signal to reduce,a first switch (sw1) for the reception of a third of the transient - detection signals is connected, and to selectively connecting a common connection between a second terminal of the current source and a first terminal of the current sink to an output of an error amplifier (15) of the control stage on the basis of the state of the third of the transient - detection signals is configured anda second switch (sw2) to receive a fourth of the transient - detection signals is connected, and to selectively connecting a common connection between the second terminal of the current source and a first terminal of the ..