公开(公告)号：US07710089B2

公开(公告)日：2010-05-04

申请号：US11681758

申请日：2007-03-03

Applicant: James Allen Kohout ,  John H Carpenter, Jr. ,  Brett Jason Thompsen

Inventor： James Allen Kohout ,  John H Carpenter, Jr. ,  Brett Jason Thompsen

IPC: G05F1/56 ,  G05F1/59

CPC classification number: H02M3/157 ,  H02M2001/0045 ,  Y10S323/901

Abstract: A method and apparatus for a Regulator that automatically configures to work in either SMPS mode or linear mode are disclosed. In one embodiment, the method includes inputting a constant current source to a CBoot_pin for a first predetermined amount of time upon enabling an autodetect circuit by a Regulator control circuit. The CBoot voltage at the CBoot_pin is then determined to see if the CBBoot voltage at the CBoot_pin is above a predetermined CBoot voltage for a second predetermined amount of time. The Regulator is then switched to operate in SMPS mode if the CBoot voltage is substantially continuously above the predetermined CBoot voltage for a second predetermined amount of time. The SMPS is operated in linear mode if the CBoot voltage is substantially continuously below or equal to the predetermined CBoot voltage for a second predetermined amount of time.

Abstract translation: 公开了一种用于自动配置为以SMPS模式或线性模式工作的稳压器的方法和装置。 在一个实施例中，该方法包括在由调节器控制电路启用自动检测电路时，将恒定电流源输入到CBoot_pin第一预定时间量。 然后确定CBoot_pin处的CBoot电压，以查看CBoot_pin处的CBBoot电压是否高于预定的CBoot电压达预定的第二预定时间量。 如果CBoot电压基本上连续地超过预定的CBoot电压达到第二预定时间量，则调节器被切换到工作在SMPS模式。 如果CBoot电压在第二预定时间量内基本上连续地低于或等于预定的CBoot电压，则SMPS以线性模式操作。

公开(公告)号：US07479770B2

公开(公告)日：2009-01-20

申请号：US11116835

申请日：2005-04-28

Applicant: James Allen Kohout ,  David John Baldwin

Inventor： James Allen Kohout ,  David John Baldwin

IPC: G05F1/40 ,  H03K17/16

CPC classification number: H03K17/166 ,  H03K17/04206

Abstract: A system and method is provided for driving a power field-effect transistor (FET). In one embodiment, a system comprises a control circuit that generates a control signal to provide a gate voltage of the power FET. The system further comprises a slope control circuit coupled between the control circuit and the power FET that is operative to dynamically control the rate-of-change of a gate voltage of the power FET to reduce electromagnetic interference (EMI) emissions and power loss resulting from switching the power FET.

Abstract translation: 提供了用于驱动功率场效应晶体管（FET）的系统和方法。 在一个实施例中，系统包括产生控制信号以提供功率FET的栅极电压的控制电路。 该系统还包括耦合在控制电路和功率FET之间的斜率控制电路，其可操作以动态地控制功率FET的栅极电压的变化率，以减少电磁干扰（EMI）发射和由 切换功率FET。