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11. 发明公开

EP1952526A2 DRIVING AN INDUCTIVE LOAD 审中-公开
标题翻译：控制一电感的负荷
公开(公告)号：EP1952526A2
公开(公告)日：2008-08-06
申请号：EP06821374.3
申请日：2006-11-08
申请人： NXP B.V.
发明人： HOOGZAAD, Gian
IPC分类号： H02P25/02 , H02M7/5387
CPC分类号： H02M7/53871 , G11B19/20 , G11B19/2009 , H02M2003/1555 , H02M2007/53878 , H02P25/034
摘要： A driver (1) supplies an output voltage (VL) to an inductive load (30). The driver comprises an input to receive a pulse width modulated control signal (CS) having a controllable duty cycle within a predetermined range. A first switch circuit (10) receives a first switch signal (CS; ICS) to supply a first voltage (Vl), a second switch circuit (13) receives a second switch signal (DCS; CSD) to supply a second voltage (V2), and the output voltage (VL) is the difference between the first voltage (Vl) and the second voltage (V2). An inverter (11; 15) and delay circuit (12; 16) receives the control signal (CS) to supply the first switch signal (CS; ICS) and the second switch signal (DCS; CSD) being inverted and delayed with respect to each other. The delay (dT) of the delay circuit (12; 16) is selected to obtain an output voltage having a single polarity for each one of said controllable duty cycles within the predetermined range.

12. 发明公开

EP4072011A1 PROTECTION CIRCUIT AND METHOD 审中-公开
公开(公告)号：EP4072011A1
公开(公告)日：2022-10-12
申请号：EP21167721.6
申请日：2021-04-09
申请人： NXP B.V.
发明人： STEGERS, Marc Gerardus Maria , HOOGZAAD, Gian , SIMIN, Alexander
IPC分类号： H03F1/52 , H03F3/19 , H03F3/45 , G01R19/04
摘要： A protection circuit and method for protecting driven circuitry against voltage peaks in a radio frequency signal, "V RF ", past a predetermined voltage level "Vdetect". The protection circuit includes an input for receiving the radio frequency signal. The protection circuit also includes at least one amplification stage coupled to the input. The amplification stage is operable to produce an amplified signal based on V detect - V RF . The protection circuit further includes a hold circuit operable to determine, from the amplified signal produced by the amplification stage, whether a peak voltage V peak of the radio frequency signal exceeds V detect . The hold circuit is operable to output a first detection value if V peak exceeds V detect . The hold circuit is operable to output a second detection value if V peak does not exceed V detect . The protection circuit also includes a latch circuit operable to latch the detection value outputted by the hold circuit.

13. 发明授权

EP2311297B1 A SWITCHED MODE POWER CONVERTER AND METHOD OF OPERATING THE SAME 有权
公开(公告)号：EP2311297B1
公开(公告)日：2018-09-26
申请号：EP09786485.4
申请日：2009-06-30
申请人： NXP B.V.
发明人： DEURENBERG, Peter Hubertus Franciscus , HOOGZAAD, Gian
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/083 , Y02B20/346
摘要： A switched mode power converter is disclosed, together with a method for operating the same. The power converter is adapted to be operable in the boundary conduction mode, and operation is interruptible in the absence of any load requirement.

14. 发明公开

EP2427946A1 PHOTOVOLTAIC UNITS, METHODS OF OPERATING PHOTOVOLTAIC UNITS AND CONTROLLERS THEREFOR 审中-公开
标题翻译：太阳能电池单元，用于操作太阳能电池单元和控制器THEREFOR
公开(公告)号：EP2427946A1
公开(公告)日：2012-03-14
申请号：EP09786562.0
申请日：2009-07-10
申请人： NXP B.V.
发明人： BERGVELD, Hendrik Johannes , SCHOOFS, Franciscus , HOOGZAAD, Gian
IPC分类号： H02J7/35 , H01L31/02
CPC分类号： H02J7/35 , H01L31/02021 , H02S40/32 , Y02E10/566 , Y10T307/615 , Y10T307/62
摘要： The present invention relates to the field of photovoltaic systems with solar cell (s) or modules having insolation differences or mismatch. Each solar module is formed by placing a large number of solar cells in series. The PV system is then formed by placing a number of solar modules in series in a string and sometimes by placing multiple strings of series-connected solar modules in parallel, depending on the desired output voltage and power range of the PV system. In practical cases, differences will exist between output powers of the solar cells in the various modules, e.g. due to (part of) the modules being temporarily shaded, pollution on one or more solar cells, or even spread in solar-cell behaviour that may become worse during aging. Due to the current-source-type behaviour of solar cells and their series connection these differences will lead to a relatively large drop in output power coming from the PV system. This invention addresses this problem by adding DC-DC converters (803) on a single or multiple solar-cell level that source or sink difference currents thereby increasing the output power of the complete PV system. In embodiments, the efficiency of photovoltaic systems with solar cell (s) or modules is improved by compensating for output-power loss caused by insolation difference and mismatch.

15. 发明公开

EP2283701A1 METHOD AND CIRCUIT ARRANGEMENT FOR CYCLE-BY-CYCLE CONTROL OF A LED CURRENT FLOWING THROUGH A LED CIRCUIT ARRANGEMENT, AND ASSOCIATED CIRCUIT COMPOSITION AND LIGHTING SYSTEM 有权
标题翻译：方法和开关装置，用于鉴别由LED开关装置，流体流动的自行车道和相关的开关LED组成和照明系统
公开(公告)号：EP2283701A1
公开(公告)日：2011-02-16
申请号：EP09746203.0
申请日：2009-05-06
申请人： NXP B.V.
发明人： HOOGZAAD, Gian , LANGESLAG, Wilhelmus, H., M. , PANSIER, Frans , ZHANG, Cheng
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/083
摘要： The invention provides a method for cycle-by-cycle control of a LED current (ILED) flowing through a LED circuit arrangement (LEDCIRC) at a mean LED current level. The method comprises a) establishing a converter current (IL), b) establishing an oscillation of the converter current (IL) between substantially a valley current level and substantially a peak current level, c) feeding the LED circuit arrangement (LEDCIRC) with the converter current (IL) as the LED current during a part of an oscillation cycle of the oscillation of the converter current, d) determining a current level correction for compensating a current level error between an integral over an oscillation cycle of the LED current and a reference, the reference being representative of the mean LED current level, and e) adjusting at least one of the valley current level and the peak current level with the current level correction for use in a successive cycle of the oscillation of the converter current. The invention also provides a circuit arrangement operable for using the method, a LED driver IC using the circuit arrangement, a circuit composition with at least one LED and the circuit arrangement, and a lighting system with the circuit composition.

16. 发明公开

EP2123125A1 ELECTRONIC DEVICE FOR DRIVING LIGHT EMITTING DIODES 有权
标题翻译：电子设备中LED的控
公开(公告)号：EP2123125A1
公开(公告)日：2009-11-25
申请号：EP07849287.3
申请日：2007-11-29
申请人： NXP B.V.
发明人： HOOGZAAD, Gian , PANSIER, Frans
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/0824 , H05B33/0851 , H05B37/02
摘要： The present invention relates to an electronic device for driving a light emitting diode, which includes a switch (Ts) being adapted to switch a switch-mode power converter, and controlling means (CNTL) being adapted for controlling the switch (Ts) in response to a sensing value (Vs) indicative of a current of the switch-mode power converter and for controlling by the switch (Ts) the output voltage of the switched power converter and a current (Iout) through the light emitting diode.

17. 发明授权

EP1198798B1 TRACK AND HOLD AMPLIFIER WITH CONTROLLABLE FEEDBACK BETWEEN HOLD CAPACITOR AND INPUT BUFFER 有权
标题翻译：与BETWEEN HALTEKAPAZITAT器和输入缓冲器可控反馈采样保持放大器
公开(公告)号：EP1198798B1
公开(公告)日：2009-11-25
申请号：EP01913883.3
申请日：2001-03-14
申请人： NXP B.V.
发明人： HOOGZAAD, Gian , DIJKMANS, Eise, C. , ROOVERS, Raf, L., J.
IPC分类号： G11C27/02
CPC分类号： G11C27/026
摘要： A track and hold amplifier for use in adc-converters comprises in succession an input buffer, a pn-junction switch and a hold capacitor. A feedback is provided between the hold capacitor and the input buffer and means are provided to disable the feedback during the hold mode.

18. 发明授权

EP1157389B1 DOUBLE INPUT BUFFER FOR TRACK-AND-HOLD AMPLIFIER 有权
标题翻译：双输入缓存样本和STOP EVER STRONG
公开(公告)号：EP1157389B1
公开(公告)日：2008-10-22
申请号：EP00990727.0
申请日：2000-12-13
申请人： NXP B.V.
发明人： HOOGZAAD, Gian
IPC分类号： G11C27/02
CPC分类号： G11C27/026
摘要： The present invention relates to an input buffer for a switched emitterfollower-like track-and-hold amplifier comprising an input stage with an input transistor (Q1), a first diode (Q2, Q2b), a cathode side of which first diode (Q2, Q2b) is connected to an emitter of the input transistor (Q1), a first current source (4) between on the one hand the junction between the cathode of the first diode (Q2, Q2b) and the emitter of the input transistor (Q1) and on the other hand a first supply voltage line (2), an anode of the first diode (Q2, Q2b) being connected to a track-and-hold controlled emitterfollower (6). The first current source (4) is a non-switched constant current source, and a second current source (M1) is connected between a collector of the input transistor (Q1) and a second supply voltage (3). A second transistor (M2, M2b) comprising a control electrode, a current input electrode and a current output electrode is connected with the control electrode to the junction (n1) between the collector of the input transistor (Q1) and the second current source (M1), with the current input electrode to the second supply voltage (3) and with the current output electrode to the anode of the first diode (Q2, Q2b).

19. 发明授权

EP2177081B1 SOLID STATE LIGHTING SYSTEM AND A DRIVER INTEGRATED CIRCUIT FOR DRIVING LIGHT EMITTING SEMICONDUCTOR DEVICES 有权
公开(公告)号：EP2177081B1
公开(公告)日：2019-06-12
申请号：EP08789492.9
申请日：2008-07-30
申请人： NXP B.V.
发明人： HOOGZAAD, Gian , SCHOOFS, Franciscus, A., C., M.
IPC分类号： H05B33/08 , H02M3/155

20. 发明授权

EP2177080B1 LED ARRANGEMENT WITH BYPASS DRIVING 有权
公开(公告)号：EP2177080B1
公开(公告)日：2019-05-29
申请号：EP08789333.5
申请日：2008-07-16
申请人： NXP B.V.
发明人： HOOGZAAD, Gian
IPC分类号： H05B33/08

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