公开(公告)号：US20020024386A1

公开(公告)日：2002-02-28

申请号：US09928857

申请日：2001-08-13

Applicant: Intersil Americas Inc.

Inventor： William Shearon ,  Salomon Vulih ,  Donald Preslar

IPC: H03F003/04

CPC classification number: H03K17/063 ,  H03F2200/504 ,  H03K17/0822

Abstract: The integrated circuit includes a power FET for generating an output voltage, a pilot FET for sensing current through the power driving device and generating a reference voltage, and an amplifier circuit for comparing the reference voltage of the pilot device with the output voltage of the power driving device. The amplifier circuit includes a differential pair of matched bipolar junction transistors (BJTs) having a common base. A first BJT of the differential pair being diode-connected. The amplifier circuit controls the gates of the power FET and the pilot FET.

Abstract translation: 集成电路包括用于产生输出电压的功率FET，用于感测通过功率驱动装置的电流并产生参考电压的引导FET，以及用于将导频装置的参考电压与功率的输出电压进行比较的放大器电路 驱动装置 放大器电路包括具有公共基极的差分对匹配双极结型晶体管（BJT）。 差分对的第一个BJT是二极管连接的。 放大器电路控制功率FET和引导FET的栅极。

公开(公告)号：US20020024786A1

公开(公告)日：2002-02-28

申请号：US09928821

申请日：2001-08-13

Applicant: Intersil Americas, Inc.

Inventor： William Shearon ,  Salomon Vulih ,  Donald Preslar

IPC: H02H003/08

CPC classification number: H03K17/0822 ,  G01R31/2884 ,  H03F1/52

Abstract: The integrated circuit includes a power driving device, and a pilot device for sensing current through the power driving device. The pilot device includes a composite pilot having a plurality of series connected transistors and which is at least active while the power driving device is in a linear mode, and a secondary pilot which is active while the power driving device is in a saturation mode. Also, a control circuit activates the secondary pilot.

Abstract translation: 集成电路包括电力驱动装置和用于感测通过电力驱动装置的电流的导频装置。 导频装置包括具有多个串联连接的晶体管并且在功率驱动装置处于线性模式时至少有效的复合导频，以及在功率驱动装置处于饱和模式时有效的次级导频。 此外，控制电路激活次级导频。