INDUCTIVE LOAD DRIVING CIRCUIT INCLUDING BALANCING CIRCUIT FOR CLAMPING CIRCUIT AND CONTROL METHOD THEREFOR

The present invention relates to a circuit for driving an inductive load and, more particularly, to an inductive load driving circuit which maintains a balance with surge protection and over-current protection functions. An inductive load driving circuit according to an embodiment of the present inv...

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Bibliographische Detailangaben
Hauptverfasser: CHO, HOO HYUN, LEE, SEUNG JONG
Format: Patent
Sprache:eng ; fre ; kor
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Beschreibung
Zusammenfassung:The present invention relates to a circuit for driving an inductive load and, more particularly, to an inductive load driving circuit which maintains a balance with surge protection and over-current protection functions. An inductive load driving circuit according to an embodiment of the present invention comprises: a first switch for driving an inductive load; a pulse driving circuit for generating a pulse signal for driving the voltage of a gate node of the first switch; a first protection circuit for, when a surge occurs, limiting a drain-source voltage such that the drain-source voltage of the first switch does not exceed a breakdown voltage; and a balancing circuit for, when the surge occurs, separating the pulse driving circuit from operations of the first protection circuit and the first switch. La présente invention concerne un circuit permettant d'entraîner une charge inductive et, plus particulièrement, un circuit d'entraînement de charge inductive qui maintient un équilibre avec fonctions de protection contre la surtension et la surintensité. La présente invention concerne un circuit d'entraînement de charge inductive selon un mode de réalisation comprenant : un premier commutateur permettant d'entraîner une charge inductive ; un circuit d'entraînement d'impulsions permettant de générer un signal d'impulsion pour entraîner la tension d'un nœud de grille du premier commutateur ; un premier circuit de protection pour, lorsqu'une surtension se produit, limiter une tension de source de drain, de telle sorte que la tension de source de drain du premier commutateur ne dépasse pas une tension de claquage ; et un circuit d'équilibrage pour, lorsque la surpression se produit, séparer le circuit d'entraînement d'impulsions des opérations du premier circuit de protection et le premier commutateur. 본 발명은 인덕티브 로드(inductive load)를 구동하는 회로에 관한 것으로서, 보다 상세하게는 써지 프로텍션(surge protection) 및 과전류 보호(over-current protection) 기능과 균형을 유지하는 인덕티브 로드 구동 회로에 관한 것이다. 본 발명의 일 실시예에 따른 인덕티브 로드 구동 회로는 인덕티브 로드를 구동하는 제1 스위치; 제1 스위치의 게이트 노드의 전압을 구동하기 위한 펄스 신호를 생성하는 펄스 구동 회로; 써지(surge)가 발생한 경우, 제1 스위치의 드레인-소스 간 전압이 항복 전압을 넘지 않도록 드레인-소스 간 전압을 제한하는 제1 보호 회로; 및 상기 써지가 발생한 경우 상기 펄스 구동 회로를 상기 제1 보호 회로 및 상기 제1 스위치의 동작으로부터 분리하는 밸런싱 회로;를 포함하는 것을 특징으로 한다.