公开(公告)号：WO2015200132A1

公开(公告)日：2015-12-30

申请号：PCT/US2015/036701

申请日：2015-06-19

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MEDNIK, Alexander ,  TIRUMALA, Rohit ,  TAN, Mark ,  KRUGLY, Simon

IPC: H02H3/04 ,  H02H3/08 ,  H02H3/093

CPC classification number: G01R31/2621 ,  G01R31/025 ,  H02H3/044 ,  H02H3/08 ,  H02H3/093

Abstract: A circuit and method are provided detecting a persistent short circuit in a power MOSFET for the purpose of protecting a load from over-current. The method determining a fault condition in a circuit comprising a switch provided with a gate, a first terminal and a second terminal, the first terminal being coupled to a load and the second terminal being coupled to a current sense element, and after a blanking delay, comparing a voltage at the current sense element with a reference voltage and asserting a signal indicating a fault condition if the voltage at the current sense element exceeds the reference voltage.

Abstract translation: 提供了检测功率MOSFET中的持续短路以便保护负载免受过电流的电路和方法。 该方法确定电路中的故障状态，该电路包括设置有门，第一端子和第二端子的开关，第一端子耦合到负载，第二端子耦合到电流感测元件，以及在消隐延迟之后 将电流检测元件上的电压与参考电压进行比较，并且如果电流检测元件上的电压超过参考电压，则断言指示故障状态的信号。

公开(公告)号：WO2015200092A3

公开(公告)日：2015-12-30

申请号：PCT/US2015/036455

申请日：2015-06-18

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MEDNIK, Alexander ,  TIRUMALA, Rohit ,  TAN, Mark ,  KRUGLY, Simon

IPC: H02M3/1584 ,  H02M3/156 ,  H02M3/158

Abstract: A comparator sense input is disconnected from a current sense resistor for the duration of a switching transition in an adjacent channel(s). Instead, the sense input receives a signal of the magnitude and the slew rate sampled prior to the transition.

公开(公告)号：EP3158633A2

公开(公告)日：2017-04-26

申请号：EP15735787.2

申请日：2015-06-18

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MEDNIK, Alexander ,  TIRUMALA, Rohit ,  TAN, Mark ,  KRUGLY, Simon

IPC: H02M3/15 ,  H02M3/156 ,  H02M3/158

CPC classification number: H03K17/162 ,  H02M1/08 ,  H02M3/1584 ,  H02M2003/1586

Abstract: A comparator sense input is disconnected from a current sense resistor for the duration of a switching transition in an adjacent channel(s). Instead, the sense input receives a signal of the magnitude and the slew rate sampled prior to the transition.

Abstract translation: 在相邻通道的切换转换期间，比较器检测输入与电流检测电阻断开。 相反，感测输入接收在转换之前采样的幅度和转换速率的信号。

公开(公告)号：EP3158616A1

公开(公告)日：2017-04-26

申请号：EP15733977.1

申请日：2015-06-19

Applicant: MICROCHIP TECHNOLOGY INC.

Inventor： MEDNIK, Alexander ,  TIRUMALA, Rohit ,  TAN, Mark ,  KRUGLY, Simon

IPC: H02H3/04 ,  H02H3/08 ,  H02H3/093

CPC classification number: G01R31/2621 ,  G01R31/025 ,  H02H3/044 ,  H02H3/08 ,  H02H3/093

Abstract: A circuit and method are provided detecting a persistent short circuit in a power MOSFET for the purpose of protecting a load from over-current. The method determining a fault condition in a circuit comprising a switch provided with a gate, a first terminal and a second terminal, the first terminal being coupled to a load and the second terminal being coupled to a current sense element, and after a blanking delay, comparing a voltage at the current sense element with a reference voltage and asserting a signal indicating a fault condition if the voltage at the current sense element exceeds the reference voltage.

Abstract translation: 一种电路和方法，只要检测在用于保护负载免受过电流的目的的功率MOSFET的持久短路。