公开(公告)号：US5811889A

公开(公告)日：1998-09-22

申请号：US613375

申请日：1996-03-11

申请人： Harold L. Massie

发明人： Harold L. Massie

IPC分类号： G06F1/26 ,  H02J1/10 ,  H01H47/00

CPC分类号： G06F1/26 ,  H02J1/10 ,  Y10T307/505 ,  Y10T307/826 ,  Y10T307/937

摘要： A circuit used in combination with a redundant power supply system to electrically disconnect its failed power supplies. The circuit comprises a power FET, a rectifier and filter circuit, a start-up circuit and a shut-down circuit. The rectifier and filter circuit rectifies an input AC waveform and subsequently filters a resultant DC voltage which is subsequently used to supply an output voltage at an output terminal connected to the power FET. In parallel with the rectifier and filter circuit, the start-up circuit is coupled to a gate of the power FET to ramp the voltage supplied to that gate slowly turning on the power FET. Coupled in parallel with the start-up circuit, the shut-down circuit conducts voltage from the gate thereby turning-off the power FET to preclude current from other power supplies of the redundant power supply system to pass current to its failed power supply.

摘要翻译： 与冗余电源系统组合使用的电路，以电断开其故障电源。 该电路包括功率FET，整流器和滤波器电路，启动电路和关断电路。 整流器和滤波器电路对输入AC波形进行整流，并随后对结果的直流电压进行滤波，随后用于在连接到功率FET的输出端子处提供输出电压。 与整流器和滤波器电路并联，启动电路耦合到功率FET的栅极，以缓冲提供给该门的电压，缓慢地导通功率FET。 与启动电路并联的情况下，关断电路从栅极传导电压，从而关断功率FET，以阻止来自冗余电源系统的其他电源的电流将电流传递到其故障电源。

公开(公告)号：US5777461A

公开(公告)日：1998-07-07

申请号：US799385

申请日：1996-12-31

申请人： Harold L. Massie ,  G. Mark Johnston

发明人： Harold L. Massie ,  G. Mark Johnston

IPC分类号： H02M1/38 ,  H02M3/158 ,  H02M3/335 ,  G05F1/56

CPC分类号： H02M1/38 ,  H02M3/1588 ,  H02M3/33561 ,  Y02B70/1466

摘要： A DC-DC voltage conversion provides a voltage to a processor in a mobile computer system using a high side power FET and a low side power FET, each having a variable gate discharge time dependent on the applied battery voltage. The power FETs are arranged in a synchronous totem pole configuration with a junction point therebetween, coupled between a voltage input terminal and ground, with the junction point coupled to a voltage output terminal. Each of the power FETs is driven by a FET driver, with the driver being coupled to the output of a comparator comparing a reference voltage with the output voltage. To avoid cross-conduction, the high side power FET and the low side power FET are coupled to each other in such a manner that the event of one turning off will turn on the other after a dead time determined by the threshold sense circuit, plus delays of the devices used in the embodiment.

摘要翻译： DC-DC电压转换使用高边功率FET和低边功率FET向移动计算机系统中的处理器提供电压，每个具有取决于施加的电池电压的可变栅极放电时间。 功率FET被布置成同步图腾柱配置，其间具有连接点，耦合在电压输入端子和地之间，其中结点耦合到电压输出端子。 每个功率FET由FET驱动器驱动，驱动器耦合到比较参考电压与输出电压的比较器的输出。 为了避免交叉导通，高边功率FET和低边功率FET以这样的方式彼此耦合，使得在由阈值感测电路确定的死区时间之后，一次关断的事件将在另一个之后导通，另外 在实施例中使用的装置的延迟。

公开(公告)号：US20100244947A1

公开(公告)日：2010-09-30

申请号：US12413271

申请日：2009-03-27

申请人： Harold L. Massie ,  Jarvis Leroy Carter, SR.

发明人： Harold L. Massie ,  Jarvis Leroy Carter, SR.

IPC分类号： H03H11/24 ,  H01L21/64

CPC分类号： G01R19/0092 ,  H01L2924/0002 ,  H01L2924/19043 ,  Y10T29/41 ,  H01L2924/00

摘要： In one embodiment, a sensing circuit includes a sense transistor and a compensation circuit to improve the accuracy of a sensing signal formed by the sensing circuit.

摘要翻译： 在一个实施例中，感测电路包括感测晶体管和补偿电路，以提高由感测电路形成的感测信号的精度。

公开(公告)号：US5831405A

公开(公告)日：1998-11-03

申请号：US649353

申请日：1996-05-17

申请人： Harold L. Massie

发明人： Harold L. Massie

IPC分类号： G05B5/00

CPC分类号： G06F1/206 ,  Y10S388/934

摘要： A motor speed control circuit includes a temperature sensor providing a first voltage output which is proportional to the temperature and a control voltage generator having an internal voltage reference receiving the first output as an input. The control voltage generator develops a control voltage representative of a desired motor speed profile which varies substantially linearly between a first predetermined temperature and a second predetermined temperature and supplies the control voltage to a motor drive circuit with a motor drive voltage at its output. The control voltage is fed back to the temperature sensor to achieve a controlled, fast rising slope. A second feedback circuit results in a reduced slope of the voltage between the second predetermined temperature and a third predetermined temperature at which an alarm signal is generated. The circuit also is able to detect a stopped motor and provide an alarm.

摘要翻译： 电动机速度控制电路包括提供与温度成比例的第一电压输出的温度传感器和具有接收第一输出的内部参考电压作为输入的控制电压发生器。 控制电压发生器产生表示在第一预定温度和第二预定温度之间基本上线性变化的期望电动机速度分布的控制电压，并且将控制电压提供给其输出处的电动机驱动电压的电动机驱动电路。 控制电压反馈到温度传感器，以实现受控的快速上升斜率。 第二反馈电路导致第二预定温度和产生报警信号的第三预定温度之间的电压的斜率减小。 该电路还能够检测到停止的电机并提供报警。

公开(公告)号：US5455501A

公开(公告)日：1995-10-03

申请号：US217643

申请日：1994-03-24

申请人： Harold L. Massie

发明人： Harold L. Massie

IPC分类号： G05F1/577 ,  H02M3/335

CPC分类号： G05F1/577 ,  H02M3/33561 ,  Y10T307/505

摘要： A primary voltage generation circuitry and an auxiliary voltage generation circuitry is provided to a DC-DC converter. The primary voltage generation circuitry generates a primary voltage output, and the auxiliary voltage generation circuitry, in cooperation with the primary voltage generation circuitry, generates an auxiliary voltage output. The primary voltage generation circuitry includes a switching circuit element and an inductor element, whereas the auxiliary voltage generation circuitry includes an inductor element complementary to the inductor element of the primary voltage generation circuitry. The inductor element of the auxiliary voltage generation circuitry references the primary voltage output, and relies on a minimum load at the primary voltage output. Preferably, the auxiliary voltage generation circuitry further includes reference circuitry elements for regulating the auxiliary voltage output to a precise assurance range. As a result, multiple high precision voltage outputs are generated efficiently by the DC-DC converter in a cost effective manner.

摘要翻译： 向DC-DC转换器提供初级电压产生电路和辅助电压产生电路。 主电压产生电路产生初级电压输出，辅助电压产生电路与初级电压产生电路协同产生辅助电压输出。 主电压产生电路包括开关电路元件和电感器元件，而辅助电压产生电路包括与初级电压产生电路的电感器元件互补的电感器元件。 辅助电压产生电路的电感器元件参考初级电压输出，并且依赖于初级电压输出处的最小负载。 优选地，辅助电压产生电路还包括用于将辅助电压输出调节到精确保证范围的参考电路元件。 结果，以成本有效的方式，由DC-DC转换器有效地产生多个高精度电压输出。