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    • 2. 发明授权
    • Semiconductor device provided with overheat protection circuit and electronic circuit using the same
    • 具有过热保护电路的半导体装置及使用其的电子电路
    • US07310213B2
    • 2007-12-18
    • US10948693
    • 2004-09-24
    • Kouji Takada
    • Kouji Takada
    • H02H5/04
    • H03K17/0822H01L2924/0002H03K2017/0806H01L2924/00
    • A overheat protection circuit is formed on the same semiconductor substrate as a power MOS FET is formed on. As the configuration, a first resistor is connected between an input terminal and a gate of the power MOS FET, a second resistor, a temperature sensing element, and a third resistor are connected in this order between the input terminal and a ground point, an FET for clamp is connected in parallel to a series circuit of the temperature sensing element and the third resistor, a series circuit of an FET for current adjustment and a fourth resistor is connected in parallel to the MOS FET for clamp, a series circuit of a fifth and sixth resistors is connected between the input terminal and the ground point, a node of the fifth and sixth resistors is connected to a gate of the FET for current adjustment, an FET for switching is connected between the gate of the power MOS FET and the ground point, and a node of the temperature sensing element and the third resistor is connected to a gate of the FET for switching.
    • 在形成功率MOS FET的同一半导体衬底上形成过热保护电路。 作为该结构,第一电阻器连接在功率MOS FET的输入端子和栅极之间,第二电阻器,温度感测元件和第三电阻器在输入端子和接地点之间依次连接, 用于钳位的FET并联连接到温度感测元件和第三电阻器的串联电路,用于电流调节的FET的串联电路和第四电阻器并联连接到用于钳位的MOS FET,串联电路 第五和第六电阻连接在输入端和接地点之间,第五和第六电阻的一个节点连接到用于电流调节的FET的栅极,用于开关的FET连接在功率MOS FET的栅极和 接地点和温度感测元件的节点和第三电阻器连接到用于切换的FET的栅极。
    • 3. 发明申请
    • Semiconductor device provided with overheat protection circuit and electronic circuit using the same
    • 具有过热保护电路的半导体装置及使用其的电子电路
    • US20050068707A1
    • 2005-03-31
    • US10948693
    • 2004-09-24
    • Kouji Takada
    • Kouji Takada
    • H01L27/04H01L21/336H01L21/66H01L23/34H03K17/08H03K17/082H02H5/04
    • H03K17/0822H01L2924/0002H03K2017/0806H01L2924/00
    • A overheat protection circuit is formed on the same semiconductor substrate as a power MOS FET is formed on. As the configuration, a first resistor is connected between an input terminal and a gate of the power MOS FET, a second resistor, a temperature sensing element, and a third resistor are connected in this order between the input terminal and a ground point, an FET for clamp is connected in parallel to a series circuit of the temperature sensing element and the third resistor, a series circuit of an FET for current adjustment and a fourth resistor is connected in parallel to the MOS FET for clamp, a series circuit of a fifth and sixth resistors is connected between the input terminal and the ground point, a node of the fifth and sixth resistors is connected to a gate of the FET for current adjustment, an FET for switching is connected between the gate of the power MOS FET and the ground point, and a node of the temperature sensing element and the third resistor is connected to a gate of the FET for switching.
    • 在形成功率MOS FET的同一半导体衬底上形成过热保护电路。 作为该结构,第一电阻器连接在功率MOS FET的输入端子和栅极之间,第二电阻器,温度感测元件和第三电阻器在输入端子和接地点之间依次连接, 用于钳位的FET并联连接到温度感测元件和第三电阻器的串联电路,用于电流调节的FET的串联电路和第四电阻器并联连接到用于钳位的MOS FET,串联电路 第五和第六电阻连接在输入端和接地点之间,第五和第六电阻的一个节点连接到用于电流调节的FET的栅极,用于开关的FET连接在功率MOS FET的栅极和 接地点和温度感测元件的节点和第三电阻器连接到用于切换的FET的栅极。
    • 6. 发明授权
    • Load driving device
    • 负载驱动装置
    • US06538480B2
    • 2003-03-25
    • US09946295
    • 2001-09-04
    • Kouji TakadaSeiki YamaguchiSatoru Takahashi
    • Kouji TakadaSeiki YamaguchiSatoru Takahashi
    • H03K300
    • H03K17/0822H03K2017/0806
    • A load driving device capable of preventing thermal destruction even when a load short-circuit or an overcurrent occurs, thereby having improved reliability, is provided. A load driving device, in which a power switch element for driving a load and a circuit for controlling the power switch element according to a signal VIN supplied from the outside are formed on one chip, is provided with an OFF-time delaying circuit for delaying an OFF-time transition of a level of an input signal at which the power switch element makes the transition from an ON state to an OFF state, according to a result of detection of a current flowing through the load and the level of the input signal to the power switch element.
    • 提供即使在发生负载短路或过电流时也能够防止热破坏,从而提高可靠性的负载驱动装置。 一个负载驱动装置,其中用于驱动负载的电源开关元件和用于根据从外部提供的信号VIN来控制功率开关元件的电路形成在一个芯片上,设置有用于延迟的关断时间延迟电路 根据检测到流过负载的电流和输入信号的电平的结果,功率开关元件从导通状态转变到断开状态的输入信号的电平的关断时间转换 到电源开关元件。