专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP1759461B1 METHOD OF CYCLICALLY CONVERTING AN ANALOG SIGNAL TO A MULTI-BIT DIGITAL OUTPUT SIGNAL AND CONVERTER FOR PERFORMING THE METHOD 有权
标题翻译： METHOD FOR循环的模拟信号转换成多比特数字输出和变频器用于执行该方法
公开(公告)号：EP1759461B1
公开(公告)日：2008-12-24
申请号：EP05745163.5
申请日：2005-06-08
申请人： NXP B.V.
发明人： KARAVIDAS, Dimitrios , DE CREMOUX, Guillaume , RISTIC, Sasa , CHRISTOFOROU, Yovgos
IPC分类号： H03M1/40
CPC分类号： H03M1/403 , H03M1/1014
摘要： Method and arrangement for cyclically AD converting an analog signal with a sampler capacitance and an integrator capacitance, comprising the steps of generating a difference signal multiplied by the ratio of said capacitances from the analog signal and a reference signal, deriving a digital bit from said difference signal, doubling the difference signal multiplied by said ratio, shifting said doubled signal by the reference signal multiplied by said ratio and using the shifted signal as difference signal multiplied by said ratio for the next cycle.

2. 发明公开

EP1869763A1 DEVICE COMPRISING A SWITCHING AMPLIFIER AND A LOAD 审中-公开
标题翻译：有开关放大器和负载设备
公开(公告)号：EP1869763A1
公开(公告)日：2007-12-26
申请号：EP06727808.5
申请日：2006-04-03
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： H03F3/217
CPC分类号： H03F3/217
摘要： Devices (1) comprising switching amplifiers (2,3) such as class D amplifiers and comprising loads (4) such as loud speakers are provided with controllers (2) for controlling switching circuits (3) for in respective four states introducing respective four voltage signals across the loads (4), which four voltage signals are different from each other. As a result, the switching power in the high frequency domain, which switching power is dissipated in the loads (4), is reduced. The total power consumption is reduced, which results in a longer playing time per battery. The controllers (2) control the switching circuits (3) for pulse width modulating the voltage signals in dependence of input signals and control the switching circuits (3) for in fifth states introducing fifth voltage signals across the loads (4), to further reduce the switching power and the dissipation in the loads (4) and the total power consumption and to further increase the playing time per battery.

3. 发明授权

EP1917708B1 MULTI-PURPOSE BATTERY CHARGING CIRCUIT 有权
标题翻译：多用途电池电路
公开(公告)号：EP1917708B1
公开(公告)日：2015-10-14
申请号：EP06795602.9
申请日：2006-08-07
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： H02J7/00
CPC分类号： H02J7/0068

4. 发明授权

EP1769299B1 COMMON-MODE VOLTAGE GENERATOR FOR A BATTERY-SUPPLIED HANDSET APPARATUS 有权
标题翻译：共模SPANNUNSGENERATOR用于电池供电的话筒
公开(公告)号：EP1769299B1
公开(公告)日：2011-01-05
申请号：EP05761105.5
申请日：2005-07-06
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： G05F1/00 , H04B15/00
CPC分类号： G05F1/56
摘要： 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.

5. 发明授权

EP1815303B1 REFERENCE VOLTAGE CIRCUIT 有权
标题翻译：基准电压电路
公开(公告)号：EP1815303B1
公开(公告)日：2009-01-07
申请号：EP05802337.5
申请日：2005-11-11
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： G05F3/24
CPC分类号： G11C27/005
摘要： The present invention provides a reference voltage circuit making use of a non-volatile and non-modifiable storage of an electric charge. A tunable transformation module is adapted to transform a constant voltage corresponding to the constant stored charge into an output reference voltage. Further, a control loop provides tuning of the transformation module by means of an external calibration module with respect to a high precision reference voltage source. During a calibration procedure the transformation module is tuned in such a way that the output reference voltage equals the high precision reference voltage. After disconnecting reference voltage electronic circuit and calibration module, the output reference voltage is governed by the charge stored by means of the non-volatile storage and by the configuration of the tunable transformation module. It remains constant and accurate with respect to time and temperature and consumes only a minimum of electric current.

6. 发明公开

EP1917708A2 MULTI-PURPOSE BATTERY CHARGING CIRCUIT 有权
标题翻译：多用途电池电路
公开(公告)号：EP1917708A2
公开(公告)日：2008-05-07
申请号：EP06795602.9
申请日：2006-08-07
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： H02J7/00
CPC分类号： H02J7/0068
摘要： 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 (MUXl, 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).

7. 发明公开

EP1917567A1 CURRENT LIMITER CIRCUIT 审中-公开
标题翻译：电流限制电路
公开(公告)号：EP1917567A1
公开(公告)日：2008-05-07
申请号：EP06780103.5
申请日：2006-07-17
申请人： NXP B.V.
发明人： DE CREMOUX, Guillaume
IPC分类号： G05F1/56
CPC分类号： G05F1/575
摘要： 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, Dl). 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 (C S3) sourcing the current flowing through the diode (Dl), 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).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式