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    • 3. 发明申请
    • High-side current sense circuit with common-mode voltage reduction
    • 具有共模电压降低的高端电流检测电路
    • US20080284403A1
    • 2008-11-20
    • US11804440
    • 2007-05-17
    • Evaldo M. MirandaAnthonius Bakker
    • Evaldo M. MirandaAnthonius Bakker
    • G05F5/08
    • G05F5/00
    • A high-side current sense circuit comprises a sense resistance Rsense connected in series with a signal having an associated current to be measured I, which develops voltages V1 and V2 on either side of Rsense. A differential gain stage powered by supply voltages VCC and VEE produces an output voltage which varies with the difference between its input signals. To keep the common mode portion of the input signal between voltages VCC and VEE, a voltage modification circuit subtracts or adds a common mode voltage to or from V1 and V2 to produce modified voltages V1′ and V2′, which are coupled to the gain stage inputs. The voltage modification circuit is arranged to ensure that VEE≦V1′ and V2′≦VCC.
    • 高侧电流检测电路包括与具有相关联的待测电流I的信号串联连接的感测电阻R ,其在R 。 由供电电压VCC和VEE供电的差分增益级产生随其输入信号之间的差异而变化的输出电压。 为了将输入信号的共模部分保持在电压VCC和VEE之间,电压修改电路减去或从V 1和V 2加上共模电压以产生修改的电压V 1'和V 2',其被耦合 到增益阶段输入。 电压修正电路被设置为确保VEE <= V 1'和V 2'<= VCC。
    • 4. 发明授权
    • Method and a measuring circuit for determining temperature from a PN junction temperature sensor, and a temperature sensing circuit comprising the measuring circuit and a PN junction
    • 用于从PN结温度传感器确定温度的方法和测量电路,以及包括测量电路和PN结的温度感测电路
    • US07010440B1
    • 2006-03-07
    • US10721608
    • 2003-11-25
    • Elizabeth A. LillisJohn A. ClearyEvaldo M. Miranda
    • Elizabeth A. LillisJohn A. ClearyEvaldo M. Miranda
    • G01K7/00
    • G01K7/01
    • A switched current temperature sensing circuit (1) comprises a measuring transistor (Q1) which is located remotely of a measuring circuit (5) which applies three excitation currents (I1,I2,I3) of different values to the measuring transistor (Q1) in a predetermined current sequence along lines (10,11). Resulting base/emitter voltages from the measuring transistor (Q1) are applied to the measuring circuit (5) along the same two lines (10,11) as the excitation currents are applied to the measuring transistor (Q1). Voltage differences ΔVbe of successive base/emitter voltages resulting from the excitation currents are integrated in an integrating circuit (36) of the measuring circuit (5) to provide an output voltage indicative of the temperature of the measuring transistor (Q1). By virtue of the fact that the measuring transistor (Q1) is excited by excitation currents of three different values, the effect of current path series resistance in the lines (10,11) on the output voltage indicative of temperature is eliminated. The predetermined current sequence in which the excitation currents are applied to the measuring transistor (Q1) is selected to minimize the voltages in the integrating circuit (36) during integration of the voltage differences ΔVbe.
    • 开关电流温度检测电路(1)包括位于测量电路(5)的远端的测量晶体管(Q1),该测量电路施加三个激励电流(I 2,I 2, 沿着线(10,11)以预定的电流序列向测量晶体管(Q1)施加不同值的/ SUB / I,I 3 3。 来自测量晶体管(Q1)的所得基极/发射极电压沿着激励电流施加到测量晶体管(Q1)的相同的两条线(10,11)施加到测量电路(5)。 由激励电流产生的连续基极/发射极电压的电压差DeltaV 集成在测量电路(5)的积分电路(36)中,以提供指示测量温度的输出电压 晶体管(Q 1)。 由于测量晶体管(Q1)由三个不同值的激励电流激发,消除了线路(10,11)中电流路径串联电阻对表示温度的输出电压的影响。 选择激励电流施加到测量晶体管(Q1)的预定电流序列,以在积分电压差DeltaV 期间最小化积分电路(36)中的电压。
    • 8. 发明授权
    • Switched current temperature sensing circuit and method to correct errors due to beta and series resistance
    • 开关电流温度检测电路和纠正β和串联电阻误差的方法
    • US07170334B2
    • 2007-01-30
    • US11170970
    • 2005-06-29
    • Evaldo M. MirandaA. Paul Brokaw
    • Evaldo M. MirandaA. Paul Brokaw
    • H01L35/00
    • G01K7/01
    • A switched current temperature sensing circuit comprises a BJT arranged to conduct a forced emitter current IE of the form Ifixed+(Ifixed/β), such that the base current is given by Ifixed/β and the collector current is given by Ifixed+(Ifixed/β)−(Ifixed/β)=Ifixed. Base current Ifixed/β is mirrored to the emitter, and a current source provides current Ifixed, which is switched between at least a first value I and a second value N*I such that the BJT's base-emitter voltage has a first value Vbe1 when Ifixed=I and a second value Vbe2 when Ifixed=N*I, such that: ΔVbe12=Vbe1−Vbe2=(nFkT/q)(ln N), where nF is the BJT's emission coefficient, k is Boltzmann's constant, T is absolute temperature, and q is the electron charge.
    • 开关电流温度检测电路包括布置成传导形式为固定的固体的强制发射极电流I B的BJT(固定的/ ),使得基极电流由I固定 /β给出,并且集电极电流由I固定 ) - (I <固定 /β)= I固定。 基极电流I <固定 /β被镜像到发射极,并且电流源提供电流I <固定,其在至少第一值I和第二值N之间切换 * I,使得当I固定 = I时,BJT的基极 - 发射极电压具有第一值V sub1n1,并且当I 固定 = N * I,使得:<?in-line-formula description =“In-line Formulas”end =“lead”?> DeltaV = (ln N),<?in-line-formula description =“In-line-formula” 公式“end =”tail“?>其中n 是BJT的发射系数,k是玻耳兹曼常数,T是绝对温度,q是电子电荷。
    • 9. 发明授权
    • High-side current sense circuit with common-mode voltage reduction
    • 具有共模电压降低的高端电流检测电路
    • US07633317B2
    • 2009-12-15
    • US11804440
    • 2007-05-17
    • Evaldo M. MirandaAnthonius Bakker
    • Evaldo M. MirandaAnthonius Bakker
    • G01R19/00
    • G05F5/00
    • A high-side current sense circuit comprises a sense resistance Rsense connected in series with a signal having an associated current to be measured I, which develops voltages V1 and V2 on either side of Rsense. A differential gain stage powered by supply voltages VCC and VEE produces an output voltage which varies with the difference between its input signals. To keep the common mode portion of the input signal between voltages VCC and VEE, a voltage modification circuit subtracts or adds a common mode voltage to or from V1 and V2 to produce modified voltages V1′ and V2′, which are coupled to the gain stage inputs. The voltage modification circuit is arranged to ensure that VEE≦V1′ and V2′≦VCC.
    • 高侧电流检测电路包括与具有相关联的待测电流I的信号串联连接的检测电阻Rsense,其在Rsense的任一侧产生电压V1和V2。 由供电电压VCC和VEE供电的差分增益级产生随其输入信号之间的差异而变化的输出电压。 为了将输入信号的共模部分保持在电压VCC和VEE之间,电压修改电路减去或从V1和V2中增加共模电压,以产生修改的电压V1'和V2',其被耦合到增益级 输入。 电压修正电路被配置为确保VEE <= V1'和V2'<= VCC。
    • 10. 发明授权
    • Voltage source circuit with selectable temperature independent and temperature dependent voltage outputs
    • 电压源电路具有可选择的温度独立和温度相关的电压输出
    • US07112948B2
    • 2006-09-26
    • US11045885
    • 2005-01-27
    • Michael P. DalyEvaldo M. MirandaDavid ThomsonA. Paul Brokaw
    • Michael P. DalyEvaldo M. MirandaDavid ThomsonA. Paul Brokaw
    • G05F3/16G05F1/10H03F3/45
    • G05F3/30
    • A voltage source includes first and second pn junctions which conduct the outputs of respective current sources to establish respective base-emitter voltages Vbe1 and Vbe2 at respective nodes; Vbe1 and Vbe2 can each be generated with a current I or a current N*I. An amplifier A1 has its non-inverting input connected to the second node and its inverting input connected to the first node through an input capacitor; a feedback capacitor is connected between the inverting input and a third node. Switches are connected between A1's inverting input and A1's output, between the third node and A1's output, and between the third node and a circuit common point. A control circuit operates the switches and current sources during first and second operating phases to selectively produce a temperature independent output voltage or a temperature dependent output voltage.
    • 电压源包括第一和第二pn结,其传导各个电流源的输出,以在各个节点处建立相应的基极 - 发射极电压V SUB1和V OUT2; 每个可以用电流I或电流N * I产生V a1和V BAT2。 放大器A 1具有连接到第二节点的同相输入端,其反相输入端通过输入电容器连接到第一节点; 反相电容器连接在反相输入和第三个节点之间。 开关连接在A 1的反相输入和A 1的输出之间,在第三个节点和A 1的输出之间,以及第三个节点和电路公共点之间。 控制电路在第一和第二操作阶段期间操作开关和电流源以选择性地产生与温度无关的输出电压或与温度相关的输出电压。