公开(公告)号：US4929883A

公开(公告)日：1990-05-29

申请号：US406500

申请日：1989-09-13

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: G01R19/00 ,  H03K4/48 ,  H03K17/082

CPC classification number: H03K4/48 ,  H03K17/0826

Abstract: A circuit for sensing the waveform of the current in a transistor, including a first transistor which is controlled on its base by a switching signal; a second transistor which is controlled on its base by a control signal which is inverted and delayed with respect to the switching signal, the collector of the first transistor being connected through a diode to the collector of the second transistor, the emitter of the first transistor and the emitter of the second transistor being connected to the ground; a third transistor connected with its base to the collector of the second transistor and with its emitter to the ground through a resistor, the third transistor being switched on when the second transistor is switched off and the first transistor is on.

公开(公告)号：US4827207A

公开(公告)日：1989-05-02

申请号：US131351

申请日：1987-12-04

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: G01R19/00 ,  G01R19/32 ,  G05F3/16

CPC classification number: G01R19/0092 ,  G01R19/32

Abstract: A circuit for the linear measurement of a current flowing through a load which comprises a current sensor consisting of a resistor, and a first driver transistor connected to the load and a second transistor connected to the resistor, both transistors being field effect transistors interconnected into a current mirror configuration, which includes an operational amplifier having its inputs respectively connected to the drain electrodes of the first and second transistors to regulate the drain-source voltage of the transistors and enable linear measurement of the load current irrespective of the operating temperature.

公开(公告)号：US4763016A

公开(公告)日：1988-08-09

申请号：US937879

申请日：1986-12-04

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: H03K17/04 ,  H03K3/287 ,  H03K3/288 ,  H03K17/60 ,  H03K17/56

CPC classification number: H03K3/288 ,  H03K3/287

Abstract: A circuit device is provided for feedback controlling a transistor to switch off which is incorporated to a transfer circuit as the last stage thereof, and when, during the "off" phase, a current is drawn through its base by another transistor, referred to as the switch-off transistor, which is conductive for just the time required for said switching off to take place.

Abstract translation: 提供电路装置用于反馈控制晶体管关断，其作为其最后阶段结合到传输电路，并且当在“截止”阶段期间，另一个晶体管将电流从其基极吸取，被称为 关断晶体管，其仅在所述关断发生所需的时间内导通。

公开(公告)号：US4904889A

公开(公告)日：1990-02-27

申请号：US277077

申请日：1988-11-28

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: H03K17/06 ,  H03K17/567

CPC classification number: H03K17/567 ,  H03K17/063

Abstract: A driving circuit comprising a low-voltage power supply line, a MOS transistor having a gate terminal and a drain terminal connected to a load and a control stage connected to the power supply line and to the gate terminal of the MOS transistor. In order to allow the MOS transistor to be switched on even when the voltage of the power supply line is lower than the threshold voltage of the MOS transistor, the driving circuit comprises a bipolar transistor connected in parallel to the MOS transistor and a voltage multiplier circuit connected between a common terminal of the MOS and bipolar transistors and the control stage. The control stage comprises comparators adapted to initially switch on the bipolar transistor so as to feed the multiplier circuit, which is thus capable of generating a voltage higher than the available supply voltage, and to subsequently switch off the bipolar transistor and switch on the MOS transistor when the voltage generated by the voltage multiplier has reached at least the threshold voltage of the MOS transistor.

公开(公告)号：US4942309A

公开(公告)日：1990-07-17

申请号：US313556

申请日：1989-02-22

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: H03K17/687 ,  H03K17/06 ,  H03K19/0185

CPC classification number: H03K17/063

Abstract: A MOS high side driver circuit switching a supply voltage by means of a power switching transistor M1 driven by a driving circuit in function of a drive switching signal C, utilizes a flip-flop for driving the gate of the power switching transistor M1. The inputs SET and RESET of the flip-flop are respectively connected to the drain node of two, grounded source, input transistors supplied from a V.sub.GG rail maintained at a constant potential difference from the source (output) node of the power switching transistor M1. Two pulse signals C.sub.R, C.sub.S and corresponding to a rising and to a falling edge of the drive switching signal C from which they are derived by suitable circuit means, are respectively applied to the gates of the two input transistors. The driving circuit dissipates only during transitions in contrast to the driving circuits of the prior art.

公开(公告)号：US4701631A

公开(公告)日：1987-10-20

申请号：US795664

申请日：1985-11-06

Applicant: Davide Chieli

Inventor： Davide Chieli

IPC: H03K17/04 ,  H03K17/0412 ,  H03K17/64 ,  H03K17/60 ,  G05F1/40 ,  H03K3/33

CPC classification number: H03K17/04126 ,  H03K17/64

Abstract: A monolithically integrated control circuit for the switching of transistors includes a control circuit coupled to a switching signal source. Signals from the signal source cause control circuit to switch at least one transistor connected thereto. The control circuit includes a current generated circuit designed to supply the at least one transistor with a high current. A current limiting circuit, actuated with a predetermined delay with respect to a turn-on cntrol signal used to switch the at least one transistor, limits the current supplied from the current generator circuit to the minimum level required to keep the at least one transistor at a conduction level which has been reached.

Abstract translation: 用于晶体管开关的单片集成控制电路包括耦合到开关信号源的控制电路。 来自信号源的信号使控制电路切换至少一个连接到其上的晶体管。 控制电路包括被设计成向至少一个晶体管提供高电流的电流产生电路。 相对于用于切换至少一个晶体管的开启电路信号以预定的延迟来驱动的限流电路将从电流发生器电路提供的电流限制在将至少一个晶体管保持在所需的最小电平 达到了传导水平。