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1. 发明授权

US4644294A Device for protecting a push-pull output stage against a short-circuit between the output terminal and the positive pole of the supply 失效
标题翻译：用于保护推挽输出级免受电源的输出端子和正极之间短路的装置
公开(公告)号：US4644294A
公开(公告)日：1987-02-17
申请号：US693777
申请日：1985-01-23
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F1/42 , H03F1/52 , H03F3/20 , H03F3/213 , H03F3/30
CPC分类号： H03F1/52
摘要： A device for protecting a push-pull output stage (G.sub.v) against a short-circuit between the output terminal (A) and the positive pole (+V.sub.cc) of the supply, comprising a first (A.sub.1) and a second (A.sub.2) threshold comparator, both having a first input terminal coupled to the output terminal (A) of the output stage and both having a second input terminal coupled to a predetermined voltage reference. The reference potential (RIF.sub.1) to which the threshold comparator (A.sub.1) is coupled is kept at a potential which is lower than the other reference potential (RIF.sub.2) to which threshold comparator (A.sub.2) is coupled. The output terminal of the first comparator (A.sub.2) is coupled to the activation terminal of a low impedance circuit means (LI) inserted between the output terminal (A) of the output stage and the negative pole (-V.sub.cc) of the supply. The output terminal of the second comparator (A.sub.2) is coupled to an inhibitor terminal of the output power amplifier stage (G.sub.v).
摘要翻译：一种用于保护推挽输出级（Gv）抵抗电源的输出端（A）和正极（+ Vcc）之间的短路的装置，包括第一（A1）和第二（A2）阈值比较器都具有耦合到输出级的输出端（A）的第一输入端，并且具有耦合到预定电压基准的第二输入端。阈值比较器（A1）耦合到的参考电位（RIF1）保持在低于阈值比较器（A2）耦合到的另一参考电位（RIF2）的电位。第一比较器（A2）的输出端子耦合到插入在输出级的输出端子（A）和电源的负极（-Vcc）之间的低阻抗电路装置（LI）的激活端子。第二比较器（A2）的输出端耦合到输出功率放大器级（Gv）的抑制端。

2. 发明授权

US4623950A Protective device for a power element of an integrated circuit 失效
标题翻译：集成电路功率元件的保护装置
公开(公告)号：US4623950A
公开(公告)日：1986-11-18
申请号：US574964
申请日：1984-01-30
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F1/52 , H01L27/02 , H03F1/42 , H02H3/42
CPC分类号： H01L27/0248
摘要： A protective device for a power element of an integrated circuit includes a circuit element for detecting and processing the value of the current flowing through the power element and the voltage supplied to the power element. The circuit element generates a measuring signal which, when it reaches a predetermined limit value, activates a threshold circuit which reduces the current level in the power element. The protective device also includes a circuit element for amplifying the measuring signal when it reaches the predetermined limit value.
摘要翻译：用于集成电路的功率元件的保护装置包括用于检测和处理流过功率元件的电流值和提供给功率元件的电压的电路元件。电路元件产生测量信号，当测量信号达到预定极限值时，激活阈值电路，其降低功率元件中的电流电平。保护装置还包括用于在测量信号达到预定极限值时放大测量信号的电路元件。

3. 发明授权

US4555674A Power audio-amplifier with automatic adjustment of the bias current absorbed by the final stage 失效
标题翻译：功率音频放大器可自动调节最终级吸收的偏置电流
公开(公告)号：US4555674A
公开(公告)日：1985-11-26
申请号：US523052
申请日：1983-08-15
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F3/30 , H03F1/30 , H03F3/183 , H03F3/20
CPC分类号： H03F1/307 , H03F3/183
摘要： A current control circuit coupled to the final stage of the amplifier automatically adjusts the bias current of the final stage so that it is low in the no-load state and higher in the load state. The low no-load value avoids useless energy leakages and heat dissipations, while the higher load value avoids "cross-over" distortions.
摘要翻译：耦合到放大器的最后级的电流控制电路自动调节最终级的偏置电流，使得其在空载状态下为低，并且在负载状态下更高。低空载值避免了无用的能量泄漏和散热，而较高的负载值避免了“交叉”失真。

4. 发明授权

US4638507A Audio amplifier switch-on control circuit 失效
标题翻译：音频放大器接通控制电路
公开(公告)号：US4638507A
公开(公告)日：1987-01-20
申请号：US722386
申请日：1985-04-12
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F1/30 , H03F1/26
CPC分类号： H03F1/305
摘要： A capacitor which is progressively chargeable in response to a switching on of the equipment, however brought about, is associated with an oscillating circuit with intervention threshold. As the load voltage of said capacitor increases the oscillating circuit shifts from a first to a second operating state, generating a switch-on current for the audio amplifier. The latter can be placed in stand-by condition by discharging to earth said capacitor by means of a suitable switch.
摘要翻译：然而，响应于设备的接通而逐渐充电的电容器与具有干预阈值的振荡电路相关联。随着所述电容器的负载电压增加，振荡电路从第一操作状态转移到第二操作状态，产生音频放大器的接通电流。后者可以通过借助于合适的开关将所述电容器放电到地面而处于待机状态。

5. 发明授权

US4575686A Output stage for power amplifiers 失效
标题翻译：功率放大器的输出级
公开(公告)号：US4575686A
公开(公告)日：1986-03-11
申请号：US634002
申请日：1984-07-24
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F1/02 , H03F3/20 , H03F3/30 , H03F3/343 , H03F3/26
CPC分类号： H03F3/3066 , H03F1/0261
摘要： The output stage for power amplifiers, in particular of the minimum drop, low tension type, is intended for use with apparatus which do not require a high output current, which output stage can operate at a lower minimum voltage supply than comparable known stages. The output stage comprises upper and lower sections interposed between a power supply line and a ground line, each section including transistors across which voltage drops (V.sub.CE sat, V.sub.BE) appear and forming current sources for each section, diodes, and at least one current mirror circuit of the multiplying type adapted to determine as a first approximation the current gain of each section. The minimum voltage drop between the power supply line and ground line, as computed for any electric line connecting the power supply line and ground line, never exceeds the value of V.sub.BE +2V.sub.CE sat.
摘要翻译：用于功率放大器的输出级，特别是最小压降，低压型，用于不需要高输出电流的装置，该输出级可在比可比较的已知级更低的最小电压电源下工作。输出级包括介于电源线和接地线之间的上部和下部，每个部分包括出现电压降（VCE sat，VBE）的晶体管，并形成每个部分的电流源，二极管和至少一个电流镜适用于确定每个部分的当前增益的第一近似的乘法类型的电路。对于连接电源线和地线的任何电气线，电源线和地线之间的最小电压降绝对不超过VBE + 2VCE sat的值。

6. 发明授权

US4682120A Short circuit protection device for an integrated circuit and a load connected thereto 失效
标题翻译：用于集成电路和与其连接的负载的短路保护装置
公开(公告)号：US4682120A
公开(公告)日：1987-07-21
申请号：US655338
申请日：1984-09-27
申请人： Sergio Palara , Aldo Torazzina
发明人： Sergio Palara , Aldo Torazzina
IPC分类号： H03F1/42 , H03F1/52 , H03F3/30 , H03F21/00
CPC分类号： H03F3/3081 , H03F1/52
摘要： A short circuit protection device for a unitary voltage gain signal transducer circuit (G.sub.v) and for a load impedance (R.sub.L) coupled to the transducer circuit includes a first (A.sub.1) and a second (A.sub.2) threshold comparator circuit and an actuator circuit (ACT). The input terminals of the first comparator (A.sub.1) are coupled to the transducer circuit input and output terminals and the output terminal of the first comparator is coupled to an activation terminal of the actuator circuit. The input terminals of the second comparator (A.sub.2) are coupled to the ends of the load impedance and the output terminal is coupled to an inhibit terminal of the actuator circuit. A first output terminal of the actuator circuit is coupled to an inhibit terminal of the transducer circuit, while a second output terminal of the transducer circuit is used to deliver a small current I.sub.1 to the load impedance.
摘要翻译：用于单一电压增益信号传感器电路（Gv）和耦合到换能器电路的负载阻抗（RL）的短路保护装置包括第一（A1）和第二（A2）阈值比较器电路和致动器电路（ACT ）。第一比较器（A1）的输入端子耦合到换能器电路输入和输出端子，并且第一比较器的输出端子耦合到致动器电路的激活端子。第二比较器（A2）的输入端子耦合到负载阻抗的端部，并且输出端子耦合到致动器电路的禁止端子。致动器电路的第一输出端子耦合到换能器电路的禁止端子，而转换器电路的第二输出端子用于将小电流I1传送到负载阻抗。

7. 发明授权

US5661430A Circuit for preventing operation of parasitic components in integrated circuits having a power stage and low-voltage control circuitry 失效
标题翻译：用于防止具有功率级和低压控制电路的集成电路中的寄生元件的操作的电路
公开(公告)号：US5661430A
公开(公告)日：1997-08-26
申请号：US529805
申请日：1995-09-19
申请人： Sergio Palara , Raffaele Zambrano
发明人： Sergio Palara , Raffaele Zambrano
IPC分类号： H01L27/04 , H01L27/02 , H01L29/78 , H03K17/08 , H03K17/687 , H03K17/16
CPC分类号： H01L27/0248
摘要： An integrated circuit including a power stage, a low-voltage component separated from the power stage by an isolating region and a reference potential region at a reference potential. The power stage includes an N-type substrate region which may be biased to a terminal voltage with respect to the reference potential and the isolating region has P-type conductivity. The low-voltage component includes an N-type input region receiving an input voltage. The input voltage and the terminal voltage may oscillate a few tens of volts above or below the reference potential and turn on parasitic transistors. To prevent turning on of the parasitic transistors, switchable conductive paths are interposed between the isolating region on the one hand, and the substrate region, the input region and the reference potential region on the other, for electrically connecting the isolating region to one of the substrate region, input region and reference potential region which presents instant by instant the lowest potential.
摘要翻译：一种集成电路，包括功率级，通过隔离区与功率级分离的低电压分量和参考电位的参考电位区。功率级包括可以相对于参考电位偏置到端电压的N型衬底区域，并且隔离区域具有P型导电性。低电压分量包括接收输入电压的N型输入区域。输入电压和端子电压可能会振荡高于或低于参考电位几十伏，并接通寄生晶体管。为了防止寄生晶体管的导通，可切换的导电路径一方面插入在隔离区域与另一方面的衬底区域，输入区域和参考电势区域之间，用于将隔离区域电连接到衬底区域，输入区域和参考电位区域，其立即呈现最低电位。

8. 发明授权

US5631551A Voltage reference with linear negative temperature variation 失效
标题翻译：电压基准线性负温度变化
公开(公告)号：US5631551A
公开(公告)日：1997-05-20
申请号：US348030
申请日：1994-12-01
申请人： Salvatore Scaccianoce , Sergio Palara , Natale Aiello
发明人： Salvatore Scaccianoce , Sergio Palara , Natale Aiello
IPC分类号： G05F3/30 , G05F3/04
CPC分类号： G05F3/30
摘要： A bandgap voltage reference circuit employs a Vbe voltage multiplier network in a feedback line of an output amplifier of the bandgap reference circuit, thus permitting to independently fix the output voltage that is produced and the temperature coefficient thereof. A voltage reference having a linear negative temperature coefficient in an extended temperature variation range may be obtained, starting from a bandgap reference voltage with a positive temperature coefficient.
摘要翻译：带隙电压参考电路在带隙参考电路的输出放大器的反馈线路中使用Vbe电压倍增器网络，从而允许独立地固定所产生的输出电压及其温度系数。从具有正温度系数的带隙基准电压开始，可以获得具有扩展温度变化范围内的线性负温度系数的电压基准。

9. 发明授权

US5606278A Circuit for limiting the output voltage of a power transistor 失效
标题翻译：用于限制功率晶体管的输出电压的电路
公开(公告)号：US5606278A
公开(公告)日：1997-02-25
申请号：US520616
申请日：1995-08-30
申请人： Sergio Palara
发明人： Sergio Palara
IPC分类号： H01L29/772 , H01L21/8222 , H01L27/06 , H01L29/76 , H03K17/08 , H03K17/0814 , H03K17/16 , H03K17/64 , H03K5/08 , H03K17/00
CPC分类号： H03K17/08146 , H03K17/16 , H03K17/64
摘要： A circuit for limiting the output voltage from a power transistor connected in series with a resonant load between a voltage supply and a voltage reference, ground, is disclosed. The circuit includes a semiconductor junction element, in particular a diode of the SCR type, having an anode terminal connected to the voltage supply, a cathode terminal connected to a common circuit node between the power transistor and the resonant load, and a control terminal connected to a reference voltage of predetermined value. The reference voltage can be constructed by using a resistor connected in series with a diode across the voltage supply. The SCR diode is constructed using the parasitic PNP-NPN transistors which exist in the structure of the power transistor.
摘要翻译：公开了一种用于限制与电源和参考电压接地之间的谐振负载串联连接的功率晶体管的输出电压的电路。电路包括半导体接合元件，特别是SCR型二极管，具有连接到电压源的阳极端子，连接到功率晶体管和谐振负载之间的公共电路节点的阴极端子以及连接到控制端子达到预定值的参考电压。参考电压可以通过使用与电压源上的二极管串联连接的电阻来构造。 SCR二极管使用存在于功率晶体管结构中的寄生PNP-NPN晶体管构成。

10. 发明授权

US5408124A Monolithic semiconductor device having a vertical structure with a deep-base and finger-emitter power transistor having a ballast resistance 失效
标题翻译：具有垂直结构的单片半导体器件，具有具有镇流电阻的深基极和手指发射极功率晶体管
公开(公告)号：US5408124A
公开(公告)日：1995-04-18
申请号：US982081
申请日：1992-11-25
申请人： Sergio Palara
发明人： Sergio Palara
IPC分类号： H01L21/331 , H01L21/8222 , H01L27/06 , H01L29/08 , H01L29/73 , H01L29/732 , H01L29/72
CPC分类号： H01L29/0804 , H01L29/7304
摘要： A finger-emitter power transistor including a substrate suitable for operating as the collector of the power transistor, an epitaxial layer superimposed over the substrate (and providing a base region for the transistor), and at least one buried emitter region (for each finger of the device) below the surface of the epitaxial layer. Each buried emitter region is provided with at least one connection area to an emitter surface metallization. The connection areas between the emitter regions and their emitter surface metallization are made in various widths to provide a ballast resistance of an adequate value.
摘要翻译：一种手指发射极功率晶体管，包括适于作为功率晶体管的集电极工作的衬底，叠加在衬底上的外延层（并且为晶体管提供基极区域），以及至少一个掩埋发射极区域该器件）在外延层的表面下方。每个埋置的发射极区域设置有至少一个与发射极表面金属化的连接区域。发射极区域和发射极表面金属化之间的连接区域以各种宽度制成，以提供足够值的镇流电阻。

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