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1. 发明公开

EP1371199A2 LINE DRIVER WITH SLEW-RATE CONTROL 审中-公开
标题翻译：与对照转换速率LINE DRIVER
公开(公告)号：EP1371199A2
公开(公告)日：2003-12-17
申请号：EP02711162.4
申请日：2002-02-18
申请人： Koninklijke Philips Electronics N.V.
发明人： DE HAAS, Clemens, G., J. , BOEZEN, Hendrik , BOOMKAMP, Aloysius, J., M. , BOLLEN, Gerrit, J. , VAN DEN HEUVEL, Abraham, K. , VISSER, Ruurd, A.
IPC分类号： H04L25/00
CPC分类号： H04L25/028
摘要： A line driver for a LIN-bus. The line driver has a current source output transistor (T1) for pulling down the LIN-bus wire (LB) to ground (GND). The LIN-bus wire (LB) is connected to a positive supply voltage (VBAT) through a pull-up resistor (R1). The output transistor (T1) provides a ramp shaped output current, under control of a ramp generator (RG). The output current, in combination with the pull-up resistor (R1), imposes a ramp-shaped output voltage on of the pull-up resistor may vary between 500 Ohm and 1 kOhm. When the resistance is 1 kOhm, the output voltage is clamped to signal ground (GND) and a delay occurs between the edge in the data signal (TXD) and the corresponding rising ramp in the output voltage. This delay is reduced by a comparator (CMP, T2) which monitors the output voltage and which increases the slew rate of the ramp generator (RG) when the output voltage is clamped and drops below a certain threshold.

2. 发明公开

EP1092300A1 CIRCUIT FOR SUPPRESSING A COMMON MODE COMPONENT IN A SIGNAL FROM A CAN COMMUNICATION BUS 有权
标题翻译：电路对GLEICHTAKTKOMPONENT的在CAN-BUS通信信号降低
公开(公告)号：EP1092300A1
公开(公告)日：2001-04-18
申请号：EP00926990.3
申请日：2000-04-17
申请人： Koninklijke Philips Electronics N.V.
发明人： BOEZEN, Hendrik , VAN DEN HEUVEL, Abraham, K.
IPC分类号： H04L12/40 , H04L12/413 , H03F3/45
CPC分类号： H03F3/45704 , H04L12/4135 , H04L2012/40215
摘要： The common mode component in the difference signal on the bus terminals (2, 4) of a CAN bus is counteracted by four transistors (M1-M4) connected between the supply terminals (28, 32) and a center tap (16) of a voltage divider (6A, 6B, 8, 10, 12A, 12B) between the bus terminals (2, 4). As a result of this, the voltage on the center tap (16) varies to a substantially smaller extent or not at all. Thus, it is possible to use a simpler differential amplifier (20) having a smaller common mode swing at the inputs (22, 24). Moreover, the attenuation factor selected for the voltage divider can be smaller, as a result of which a higher difference voltage is available for the differential amplifier (20).

3. 发明公开

EP1183780A1 ELECTRONIC CIRCUIT PROVIDED WITH A DIGITAL DRIVER FOR DRIVING A CAPACITIVE LOAD 有权
标题翻译：具有数字驱动器，用于驱动容性负载电子电路
公开(公告)号：EP1183780A1
公开(公告)日：2002-03-06
申请号：EP01917058.8
申请日：2001-03-05
申请人： Koninklijke Philips Electronics N.V.
发明人： BOEZEN, Hendrik , VAN DEN HEUVEL, Abraham, K.
IPC分类号： H03K19/003 , H03K19/00 , H03K5/151
CPC分类号： H03K5/1515
摘要： An electronic circuit having first (VSS) and second (VDD) power supply terminals and comprising a first digital driver (DRV) and a further digital driver (DRVF). The digital drivers (DRV, DRVF) are arranged for driving capacitive loads such as charge pump capacitors (CP1, CP2) of a charge pump (CHGP). The first digital driver (DRV) comprises a first field effect transistor (T1) having a source coupled to the first power supply terminal (VSS), a drain coupled for driving the first charge pump capacitor (CP1), and a gate; a second field effect transistor (T2) having a source coupled to the second power supply terminal (VDD), a drain coupled to the drain of the first field effect transistor (T1), and a gate; a first capacitor (C1) coupled between the gate of the first field effect transistor (T1) and an input terminal (CLK) for receiving a digital input signal (UCLK); and a second capacitor (C2) coupled between the gate of the second field effect transistor (T2) and the input terminal (CLK). The further digital driver (DRVF) is constructed in a similar way as the digital driver (DRV). DC paths are formed between the gates of field effect transistors (T1 - T4) and the supply terminals (VSS, VDD). Owing to the special construction of the digital drivers (DRV, DRVF), there is never a short-circuit current between the digital drivers (DRV, DRVF). As a result, the digital drivers (DRV, DRVF) have a very high power efficiency.

4. 发明授权

EP1276643B1 FAULT TOLERANT AIR BAG BUS SYSTEM WITHOUT TRANSFORMER 有权
标题翻译：容错气囊总线系统无变压器
公开(公告)号：EP1276643B1
公开(公告)日：2004-07-14
申请号：EP01933806.0
申请日：2001-04-09
申请人： Koninklijke Philips Electronics N.V.
发明人： BOEZEN, Hendrik , BOOMKAMP, Aloysius, J., M. , BREDIUS, Martinus , BUEHRING, Peter , HEUTS, Patrick, W., H. , VAN DEN HEUVEL, Abraham, K. , JOEHNK, Egon , VISSER, Maarten, T. , VISSER, Ruurd, A.
IPC分类号： B60R21/01 , H02J9/06
CPC分类号： B60R21/0173 , B60R2021/01075 , H02J7/345 , Y10T307/799
摘要： A fault tolerant air bag system needs a floating supply, which supply conventionally is made by means of a DC-DC converter with a transformer. By splitting the main energy reserve capacitor (14) into two capacitors (14, 34), and coupling one of the capacitors (34) to the other (14) by means of switches (36, 38) which open during a crash, no transformer is needed any more.

5. 发明公开

EP1402694A2 LINE DRIVER WITH CURRENT SOURCE OUTPUT AND HIGH IMMUNITY TO RF SIGNALS 审中-公开
标题翻译：与动力源输出和高免疫抗HF信号LINE DRIVER
公开(公告)号：EP1402694A2
公开(公告)日：2004-03-31
申请号：EP02712151.6
申请日：2002-02-18
申请人： Koninklijke Philips Electronics N.V.
发明人： DE HAAS, Clemens, G., J. , BOEZEN, Hendrik , BOOMKAMP, Aloysius, J., M. , BOLLEN, Gerrit, J. , VAN DEN HEUVEL, Abraham, K. , VISSER, Ruurd, A.
IPC分类号： H04L25/02
CPC分类号： H04L25/028
摘要： Line driver for a LIN-bus. The line driver has a current source output transistor (T1) for pulling down the LIN-bus wire (LB) to ground (GND). The LIN-bus wire (LB) is connected to a positive supply voltage (VBAT) through a pull-up resistor (R1). The output transistor (T1) is driven by a driver stage (DRV) in response to an input current (J1) at an input node (X). The driver stage has a further resistor (R2) connected between the gate of the output transistor (T1) and a reference terminal (GND), a reference transistor (T2) which has its source connected to the reference terminal (GND) and its drain coupled to the input node (X); the gates of the output transistor (T1) and the reference transistor (T2) are connected to an output (DAO1) of a differential amplifier (DA1) which has an inverting input (DAN1) coupled to a bias voltage source (E2) and a non-inverting input (DAP1) coupled to the input node (X). The further resistor (R2) stage provides a low-impedance path to ground for RF disturbances reaching the gate of the output transistor (T1) through the drain-gate capacitance of the output transistor (T1) and prevents these disturbances from penetrating the driver stage.

6. 发明公开

EP1276643A1 FAULT TOLERANT AIR BAG BUS SYSTEM WITHOUT TRANSFORMER 有权
标题翻译：容错气囊总线系统无变压器
公开(公告)号：EP1276643A1
公开(公告)日：2003-01-22
申请号：EP01933806.0
申请日：2001-04-09
申请人： Koninklijke Philips Electronics N.V.
发明人： BOEZEN, Hendrik , BOOMKAMP, Aloysius, J., M. , BREDIUS, Martinus , BUEHRING, Peter , HEUTS, Patrick, W., H. , VAN DEN HEUVEL, Abraham, K. , JOEHNK, Egon , VISSER, Maarten, T. , VISSER, Ruurd, A.
IPC分类号： B60R21/01 , H02J9/06
CPC分类号： B60R21/0173 , B60R2021/01075 , H02J7/345 , Y10T307/799
摘要： A fault tolerant air bag system needs a floating supply, which supply conventionally is made by means of a DC-DC converter with a transformer. By splitting the main energy reserve capacitor (14) into two capacitors (14, 34), and coupling one of the capacitors (34) to the other (14) by means of switches (36, 38) which open during a crash, no transformer is needed any more.

7. 发明公开

EP0996999A2 CAN BUS DRIVER WITH SYMMETRICAL DIFFERENTIAL OUTPUT SIGNALS 审中-公开
标题翻译：具有平衡差分输出信号可以总线驱动器电路
公开(公告)号：EP0996999A2
公开(公告)日：2000-05-03
申请号：EP99912010.8
申请日：1999-04-22
申请人： Koninklijke Philips Electronics N.V.
发明人： BOEZEN, Hendrik , BREDIUS, Martinus , BOOMKAMP, Aloysius, J., M. , KWAKERNAAT, Cecilius, G. , VAN DEN HEUVEL, Abraham, K.
IPC分类号： H03K3/00
CPC分类号： H04L25/028 , H04L25/0276
摘要： Bus driver having a P-channel output transistor (T1) for driving a first bus terminal (6) from a positive supply terminal (2), an N-channel output transistor (T2) for driving a second bus terminal (12) from a negative supply terminal (4), a P-channel driver transistor (T3) and an N-channel driver transistor (T4) series connected between the positive (2) and the negative (4) supply terminal. The control electrodes of the P-channel transistors (T1, T3) are interconnected and the control electrodes of the N-channel transistors (T2, T4) are interconnected to obtain a fixed relationship between the currents through the P-channel transistors (T1, T3) and through the N-channel transistors (T2, T4). The conduction of the driver transistors (T3, T4) is controlled by two floating control voltage sources (22, 24) which are connected between the interconnection node (20) of the driver transistors (T3, T4) and the respective control electrodes of the driver transistors. Any difference between the current through the P-channel driver transistor (T3) and the N-channel driver transistor (T4) is compensated for by a change in the voltage level at the interconnection node (20). In this way the currents through the driver transistors (T3, T4), and also through the output transistors (T1, T2) which are scaled copies of the driver transistors, are always equal and a highly symmetrical driving of the two bus wires (8, 14) is obtained. As a result, the electromagnetic radiation of the bus wires is low.

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