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    • 2. 发明公开
    • Bootstrap line power supply regulator with no filter capacitor
    • VersorgungsspannungsreglerfürBootstrapleitung ohne Filterkondensator
    • EP0751621A1
    • 1997-01-02
    • EP95830283.8
    • 1995-06-30
    • SGS-THOMSON MICROELECTRONICS S.r.l.
    • Masini, MarcoStorti, SandroBoiocchi,Stefania
    • H03K17/06H03K17/042
    • H03F3/2171H03K17/04206H03K17/063
    • A power supply regulator (30) comprising a regulated-voltage source (23); a buffer (31) connected to the voltage source; and a diode (24) connected to the output of the buffer. A bootstrap capacitor (25) is located between the diode and the output of a power stage (1); and the output (6) of the power stage is switched between a low and a high value by a digital signal (IN) also supplied to the input of the buffer (31) which therefore generates a switched regulated output voltage (V 36 ) varying between a first value equal to the regulated voltage (V REG ) and a second lower value. The switched regulated voltage switches from the first to the second value before the output of the power stage (1) switches to high, thus immediately disabling the diode (24) and preventing current spikes due to minority carriers in the diode from being transmitted to the regulated-voltage source (23). The switched regulated voltage (V 36 ) switches from the second to the first value before the output (6) of the power stage (1) switches to low, to permit charging of the bootstrap capacitor (25) to the regulated voltage (V REG ) when the output (6) is low.
    • 一种电源调节器(30),包括调节电压源(23); 连接到电压源的缓冲器(31) 以及连接到缓冲器的输出端的二极管(24)。 自举电容器(25)位于二极管和功率级(1)的输出之间; 并且功率级的输出(6)通过也提供给缓冲器(31)的输入端的数字信号(IN)在低和高值之间切换,因此数字信号(IN)产生一个切换的稳压输出电压(V36) 等于调节电压(VREG)的第一值和第二较低值。 开关调节电压在功率级(1)的输出切换到高电平之前从第一值切换到第二值,从而立即禁用二极管(24)并且防止由二极管中的少数载流子引起的电流尖峰传输到 调节电压源(23)。 在功率级(1)的输出(6)切换到低电平之前,开关调节电压(V36)从第二值切换到第一值,以允许自举电容器(25)向调节电压(VREG)充电。 输出(6)为低电平。
    • 4. 发明公开
    • Single-output dual-supply class D amplifier
    • Klasse-DVerstärkermit einem Ausgang und zwei Betriebsspannungen
    • EP0753934A1
    • 1997-01-15
    • EP95830301.8
    • 1995-07-13
    • SGS-THOMSON MICROELECTRONICS S.r.l.
    • Masini, MarcoTavazzani, ClaudioBoiocchi, Stefania
    • H03F3/00H03F3/217H03K3/282
    • H03K3/2821H03F3/2171
    • An amplifier (70) is formed by an astable multivibrator (2) having a signal output (15, 19) supplying a two-state output signal to a power stage (3), the output (35) of which presents an output voltage (V o ) switching between a first and second value; the output voltage presents a duty cycle varying with the input signal (V in ) of the multivibrator. The amplifier (70) is connected between a first and second supply line (V cc , -V cc ) symmetrical with respect to ground (13) and subject to supply noise ( ΔV), and comprises a current source (71) for generating the bias current of the astable multivibrator and supplying a current (I) switchable at each half cycle; the value of the current at each half cycle being proportional to the absolute value of the output voltage (V o ) of the amplifier, so as to vary the duty cycle of the amplifier in a manner correlated with the supply noise, so that the average output voltage value is zero.
    • 放大器(70)由具有向功率级(3)提供两状态输出信号的信号输出(15,19)的非稳态多谐振荡器(2)形成,其输出(35)呈现输出电压( Vo)在第一和第二值之间切换; 输出电压呈现与多谐振荡器的输入信号(Vin)变化的占空比。 放大器(70)连接在相对于地(13)对称并经受电源噪声(DELTA V)的第一和第二电源线(Vcc,-Vcc)之间,并且包括用于产生偏置的电流源(71) 提供不稳定多谐振荡器的电流并提供每个半周期可切换的电流(I); 每个半周期的电流值与放大器的输出电压(Vo)的绝对值成正比,从而以与供给噪声相关的方式改变放大器的占空比,使平均输出 电压值为零。
    • 7. 发明公开
    • Memory comprising a programmable static selection circuit for programmable devices
    • Programmierbare statische Wahlschaltungfürprogrammierbare Anordnungen。
    • EP0362715A2
    • 1990-04-11
    • EP89118108.3
    • 1989-09-29
    • SGS-THOMSON MICROELECTRONICS S.r.l.
    • Chiriatti, AntonioMasini, Marco
    • G11C16/06
    • G11C16/08
    • The circuit comprises: a pair of programmable cells connected in series, one conducting, the other one open, with one free terminal connected to the ground and the opposite free terminal connected to a supply voltage; a threshold circuit having one input connected to the node between the two programmable cells, a switching threshold lower than the difference between the supply voltage and the threshold voltage of one of the programmable cells, and an output adapted to assume one of two logic levels depending on whether the tension on the input is higher or lower than the threshold; and a first transistor which is connected between the ground and the opposite end of the pair of programmable cells, is normally off and has a gate which can be driven to make it conduct.
    • 电路包括:串联连接的一对可编程单元,一个导通,另一个断开,一个自由端连接到地,而相对的自由端连接到电源电压; 阈值电路,其一个输入连接到两个可编程单元之间的节点,切换阈值低于可编程单元之一的电源电压和阈值电压之间的差,以及适于采用两个逻辑电平中的一个依赖于 关于输入上的张力是否高于或低于阈值; 并且连接在一对可编程单元的接地端和相对端之间的第一晶体管通常断开并具有可被驱动以使其导通的栅极。