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    • 4. 发明申请
    • CURRENT LIMITER CIRCUIT
    • US20100219892A1
    • 2010-09-02
    • US12063465
    • 2006-07-17
    • Guillaume De Cremoux
    • Guillaume De Cremoux
    • H03F3/16
    • G05F1/575
    • The present invention relates to a circuit configuration for detecting and rapidly limiting large current increase based on high current injection at the output terminal (out). In particular, a gate-controlled switching device (PO), controlled by a driver circuit (40) through a low resistive element (RO) and passed through by a current overshoot, will be alternatively driven by the circuit of the present invention while having its control terminal charged by the high injected current. Thus, when large voltage increase generated by a steep front impulse with a positive slope is detected by the capacitor (C) and transmitted to the gate terminal (GateN), the circuit of the present invention bypasses the driver circuit (40) while injecting a significant current peak issued from the transistor (P3) towards the gate terminal (GateP) of the gate-controlled switching device (PO), whereas the capacitor (C) is discharging very slowly through the gate terminal (GateN). The current amplification leading to the injected current peak is made through the use of the current mirror (P4, P3) with a large current mirror ratio and enhanced by the presence of the diodes (DO, D1). In a quiescent mode or when large voltage decrease generated by a steep front impulse with a negative slope is detected by the capacitor (C) and transmitted to the gate terminal (GateN), the transistor (P4) becomes short-circuited by the current source (CS3) sourcing the current flowing through the diode (D1), such that the current mirror (P4+P5, P3) is virtually replaced by the current mirror (P5, P3) with a much lower current mirror ratio. As a result, the low current of the sinking current source (CS2) will be sufficient to sink the lower current mirrored by the current mirror (P3, P5) and will then allow the driver circuit (40) to take over the control of the switching device (PO). Finally, this circuit configuration operates unidirectionally while limiting large current increase but not large current decrease through the gate-controlled switching device (PO).
    • 5. 发明申请
    • Common-Mode Voltage Generator for a Battery-Supplied Handset Apparatus
    • 用于电池供电的手持设备的共模电压发生器
    • US20090167277A1
    • 2009-07-02
    • US11632613
    • 2005-07-06
    • Guillaume De Cremoux
    • Guillaume De Cremoux
    • G05F5/00
    • G05F1/56
    • A common-mode voltage generator for a battery-supplied apparatus is provided with a battery voltage ripple-insensitive sensor comprising a voltage dividing circuit and a number of hysteresis comparators, by means of which a battery voltage, or a fraction thereof is compared with a series of reference voltages. These reference voltages are derived from an on-chip voltage by means of said voltage dividing circuit. The hysteresis of said hysteresis comparators is larger than the ripple on said battery voltage. Further there is an adjustable regulation loop. The sensor detects a battery voltage range and adjusts the regulation loop on the basis of this range. The regulation loop provides an output commonmode voltage, which is equal to a fraction, preferably half the battery voltage.
    • 用于电池供电装置的共模电压发生器具有电池电压纹波不敏感传感器,该电池电压纹波不敏感传感器包括一个分压电路和多个滞后比较器,通过该电压电压或一部分将电池电压或其一部分与 一系列参考电压。 这些参考电压通过所述分压电路从片上电压导出。 所述滞后比较器的滞后大于所述电池电压上的纹波。 此外还有一个可调的调节回路。 传感器检测电池电压范围,并根据此范围调整调节回路。 调节回路提供输出共模电压,其等于分数,优选电池电压的一半。
    • 8. 发明授权
    • Multi-purpose battery charging circuit
    • 多功能电池充电电路
    • US08310207B2
    • 2012-11-13
    • US12063460
    • 2006-08-07
    • Guillaume De Cremoux
    • Guillaume De Cremoux
    • H02J7/00H02J7/04
    • H02J7/0068
    • The present invention relates to a multi-purpose battery charging circuit configuration able to be selectively in a simple charge mode when intended for low-end solutions (option 3) or in a charge-and-play mode when intended for medium- and high-end solutions (options 1 and 2 respectively), while maintaining the supply voltage of any portable and mobile electronic devices with an acceptable noise level. The selection will be made possible by the use of multiplexers (MUX1, MUX2). If the option 1 is chosen, the bi-directional switching device (210) will be controlled by a driver circuit (340) for allowing the current which flows through it towards the battery (20) to strongly increase and thereby maintaining the voltage across the circuitry (10) at a value slightly greater than the voltage across the battery (20). If the option 2 is chosen, the synchronous step-down voltage regulator (310) comprising at least the driver circuit (350) and the switching devices (200, 230) will track the voltages across the circuitry (10) and the battery (20) for regulating the voltage across the circuitry (10) at a value in the vicinity of the voltage across the battery (20). If the option 3 is chosen, the battery (20) which cannot be separated from the circuitry (10) will be in a simple charge mode while being charged through the switching device (210).
    • 本发明涉及一种多用途电池充电电路配置,其能够在用于低端解决方案(选项3)时选择性地处于简单的充电模式,或者当用于中高端时,可以在充电和播放模式中, (选项1和2),同时保持具有可接受噪声水平的任何便携式和移动电子设备的电源电压。 通过使用多路复用器(MUX1,MUX2)可以进行选择。 如果选择选项1,则双向开关装置(210)将由驱动电路(340)控制,用于允许流过电池(20)的电流大大增加,从而保持跨过电压 电路(10)的电位值略高于电池(20)两端的电压。 如果选择选项2,至少包括驱动器电路(350)和开关装置(200,230)的同步降压电压调节器(310)将跟踪电路(10)和电池(20)之间的电压 ),用于以电池(20)两端的电压附近的值调节电路(10)两端的电压。 如果选择选项3,当通过开关装置(210)充电时,不能与电路(10)分离的电池(20)将处于简单的充电模式。
    • 9. 发明授权
    • Device comprising a switching amplifier and a load
    • 装置包括开关放大器和负载
    • US07768347B2
    • 2010-08-03
    • US11910851
    • 2006-04-03
    • Guillaume De Cremoux
    • Guillaume De Cremoux
    • H03F3/217
    • H03F3/217
    • Devices comprising switching amplifiers such as class D amplifiers and comprising loads such as loud speakers are provided with controllers for controlling switching circuits for in respective four states introducing respective four voltage signals across the loads, which four voltage signals are different from each other. The controllers control the switching circuits for pulse width modulating the voltage signals in dependence of input signals and control the switching circuits for in fifth states introducing fifth voltage signals across the loads.
    • 包括诸如D类放大器的开关放大器并且包括诸如扬声器的负载的装置设置有控制器,用于在相应的四个状态下控制开关电路,在负载中引入四个电压信号,四个电压信号彼此不同。 控制器控制开关电路,用于根据输入信号对电压信号进行脉冲宽度调制,并控制第五状态下的开关电路在负载中引入第五个电压信号。