公开(公告)号：US20020097545A1

公开(公告)日：2002-07-25

申请号：US09862990

申请日：2001-05-22

Applicant: Intersil Americas Inc.

Inventor： Grady M. Wood

IPC: H02H009/02

CPC classification number: H04M3/18 ,  H04M3/005 ,  H04M2201/06

Abstract: A switch includes first and second switch terminals, at least one output MOS transistor for selectively connecting the first and second switch terminals, and a driving current source for driving the at least one output MOS transistor. The switch may also include a current limiter for limiting the driving of the at least one output MOS transistor by the driving current source to establish a current limit. Furthermore, a controller may be included for the current limiter for controlling the current limit, such as by causing the current limiter to decrease the current limit based upon an increase in temperature of the integrated circuit or at periodic intervals to control rise and fall times of the at least one output MOS transistor.

Abstract translation: 开关包括第一和第二开关端子，用于选择性地连接第一和第二开关端子的至少一个输出MOS晶体管和用于驱动至少一个输出MOS晶体管的驱动电流源。 开关还可以包括限流器，用于限制由驱动电流源驱动至少一个输出MOS晶体管以建立电流限制。 此外，例如通过使限流器基于集成电路的温度升高或者以周期性间隔来降低电流限制，控制电流限制器的控制器用于控制电流限制，以控制电流限制器的上升和下降时间 所述至少一个输出MOS晶体管。

公开(公告)号：US20040160194A1

公开(公告)日：2004-08-19

申请号：US10777955

申请日：2004-02-12

Applicant: Intersil Americas Inc.

Inventor： Grady M. Wood

IPC: G09G003/10

CPC classification number: H05B33/08 ,  Y02B20/32

Abstract: An electroluminescent driver circuit with improved power consumption efficiency. In one embodiment, an electroluminescent driver circuit comprises a load to provide illumination, an inductor, a transistor and a plurality of switches. The inductor has a first side coupled to a positive terminal of a power supply and a second side selectively coupled to the load. The transistor is coupled to selectively conduct current from the second side of the inductor to a ground terminal of the power supply in response to a digital signal. The plurality of switches are coupled to the load to selectively charge and discharge the load. Moreover, the switches selectively provide a discharge path for positive charge on the load to be discharged to the positive terminal of the power supply.

公开(公告)号：US20030132712A1

公开(公告)日：2003-07-17

申请号：US10051865

申请日：2002-01-16

Applicant: INTERSIL AMERICAS INC.

Inventor： Grady M. Wood

IPC: G09G003/10

CPC classification number: H05B33/08 ,  Y02B20/32

Abstract: An electroluminescent driver circuit with improved power consumption efficiency. In one embodiment, an electroluminescent driver circuit comprises a load to provide illumination, an inductor, a transistor and a plurality of switches. The inductor has a first side coupled to a positive terminal of a power supply and a second side selectively coupled to the load. The transistor is coupled to selectively conduct current from the second side of the inductor to a ground terminal of the power supply in response to a digital signal. The plurality of switches are coupled to the load to selectively charge and discharge the load. Moreover, the switches selectively provide a discharge path for positive charge on the load to be discharged to the positive terminal of the power supply.

Abstract translation: 具有提高功耗效率的电致发光驱动电路。 在一个实施例中，电致发光驱动电路包括提供照明的负载，电感器，晶体管和多个开关。 电感器具有耦合到电源的正端子的第一侧和选择性地耦合到负载的第二侧。 晶体管被耦合以响应于数字信号选择性地将电流从电感器的第二侧传导到电源的接地端。 多个开关耦合到负载以选择性地对负载进行充电和放电。 此外，开关选择性地提供放电路径，用于要放电到电源的正极端子的负载上的正电荷。