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1. 发明公开

EP4054066A1 SYNCHRONOUS FLYBACK CONVERTER 审中-公开
公开(公告)号：EP4054066A1
公开(公告)日：2022-09-07
申请号：EP21160105.9
申请日：2021-03-02
申请人： Tridonic GmbH & Co. KG
发明人： Schertler, Markus , Klotz, Reimar
IPC分类号： H02M3/335
摘要： The invention relates to a synchronous flyback converter (100), comprising a galvanic isolation stage (101); a first controllable switch (103) on a primary side of the galvanic isolation stage (101); a second controllable (105) switch on a secondary side of the galvanic isolation stage (101); and a control unit (107). The control unit (107) is configured to control a switching operation of the first controllable switch (103) and the second controllable switch (105) based on a first control loop which controls an output current of the flyback converter (100) to a target value, and based on a second control loop which controls a negative peak value of a secondary side current to a reference value.

2. 发明公开

EP4358647A1 SYNCHRONOUS FLYBACK CONVERTER WITH FEEDBACK-CONTROLLED SECONDARY SIDE SWITCH 审中-公开
公开(公告)号：EP4358647A1
公开(公告)日：2024-04-24
申请号：EP22202363.2
申请日：2022-10-19
申请人： Tridonic GmbH & Co KG
发明人： Schertler, Markus , Stark, Stefan , Nachbaur, Stefan , Walch, Patrick
IPC分类号： H05B45/32 , H05B45/335 , H02M3/335
CPC分类号： H02M3/33592 , H02M3/33523 , H05B45/385
摘要： A method is proposed for operating a synchronous flyback converter arranged to supply lighting means at its output terminals, the flyback converter having a transformer galvanically separating a primary side and secondary side of the converter. The power transmitted by the converter is feedback-controlled by actively adjusting the conducting time period of secondary side switch, thus adjusting the amount of a negative current flowing through said switch. In case of a change of a nominal value signal commanding the power to be transmitted by the flyback converter, a switching operation parameter of a primary side switch of the converter is adjusted by a feed forward manner. In case of such change of nominal value a feed forward disturbance signal is applied to the conducting time period of secondary side switch.

3. 发明公开

EP3993572A1 WIRELESS MODULE AND COMBINATION OF WIRELESS MODULE AND CIRCUIT BOARD 审中-公开
公开(公告)号：EP3993572A1
公开(公告)日：2022-05-04
申请号：EP20204233.9
申请日：2020-10-28
申请人： Tridonic GmbH & Co. KG
发明人： Lochmann, Frank , Schertler, Markus , Mayrhofer, Markus , Simma, Lukas , Zengerle, Thomas , Schnell, Patrick
IPC分类号： H05K1/11 , H05K1/14 , H01L23/498 , H01L23/00 , H05K3/36 , H05K3/34 , H05K1/02
摘要： A wireless module (1) for a lighting technology device (5) is provided. The device (5) comprises terminals (102, 104, 106, 108) being arranged on a bottom side (100) opposing a component side of the wireless module (1). The terminals (102, 104, 106, 108) have a plurality of footprints. A footprint of each of the terminals (102, 104, 106, 108) off a periphery of the bottom side (100) is less than or equal to a footprint of each of the terminals (102, 104, 106, 108) in the periphery of the bottom side (100). Further, combinations (2; 3; 4) of a wireless module (1) and a circuit board (200; 300; 400) are provided, as well as a lighting technology device (5) comprising such a combination (2; 3; 4).

4. 发明公开

EP3651553A1 A BUS INTERFACE AND A METHOD FOR PREVENTION OF LOCKOUT SITUATION 有权
公开(公告)号：EP3651553A1
公开(公告)日：2020-05-13
申请号：EP18204500.5
申请日：2018-11-06
申请人： Tridonic GmbH & Co. KG
发明人： Lochmann, Frank , Maldoner, Jakob , Netzer, Harald , Schertler, Markus
IPC分类号： H05B37/02 , G06F13/40
摘要： The present invention relates to a module for providing a powered interface, comprising at least one terminal configured to connect a bus having a non-zero DC voltage level in the quiet state; an internal power supply configured to supply a connected bus with DC power, wherein the internal power supply is designed such that it can be switched off; and a control circuitry configured to control the internal power supply, and communicate by receiving and/or sending signals over the bus. The control circuitry of the driver circuit is further configured to carry out the following steps upon receipt of an internal power supply switch-off command: switching off the internal power supply and detecting the bus voltage level at a predetermined time after switching off the internal power supply; and continuing the switched-off state of the internal power supply, when it is determined that the detected bus voltage level is above a threshold value; and switching on again the internal power supply and/or sending out a message over the bus, when it is determined that the detected bus voltage level at the predetermined time after switching off drops to or below the threshold value.

5. 发明公开

EP4287484A1 SYNCHRONOUS ISOLATED LED CONVERTER, LED POWER SUPPLY AND LED LUMINAIRE 审中-公开
公开(公告)号：EP4287484A1
公开(公告)日：2023-12-06
申请号：EP22176955.7
申请日：2022-06-02
申请人： Tridonic GmbH & Co KG
发明人： Stark, Stefan , Nachbaur, Stefan , Schertler, Markus , Walch, Patrick
IPC分类号： H02M3/335
摘要： Disclosed is a synchronous isolated LED converter (1). The converter (1) comprises a main transformer (111, 112, 113), a voltage sensing circuit (14), a controller (16), an ancillary transformer (191, 192), and a switch (20). The main transformer (111, 112, 113) is configured to transform electric power from an input-side electric potential (12) of the converter (1) to an output-side electric potential (13) of the converter (1), and includes an auxiliary winding (113). The voltage sensing circuit (14) is connected to the auxiliary winding (113) and configured to generate a voltage sensing signal (15, V SNS2 ) in accordance with a voltage across the auxiliary winding (113). The controller (16) is connected to the voltage sensing circuit (14) and configured to provide a drive current (17, I SW2 ) in accordance with a sampling of the voltage sensing signal (15, V SNS2 ). The sampled voltage sensing signal (15, V SNS2 ) is indicative of an output voltage (18, V LED ) of the converter (1), and the drive current (17, I SW2 ) is associated with the input-side electric potential (12). The ancillary transformer (191, 192) is connected to the controller (16) and configured to transform the drive current (17, I SW2 ) from the input-side electric potential (12) to the output-side electric potential (13). The switch (20) is operable in accordance with the transformed drive current (17, I SW2 ). The controller (16) is further configured to sample the voltage sensing signal (15, V SNS2 ) in accordance with a zero-crossing of an output-side current (I 2 ) of the converter (1), yet asynchronously with respect to pulse edges of the drive current (17, I SW2 ). This avoids an incorrect voltage sensing in a cost-efficient manner.

6. 发明公开

EP4135483A1 OVERVOLTAGE-PROTECTED CURRENT LIMITER FOR A POWER SUPPLY OF A LIGHTING CONTROL BUS 审中-公开
公开(公告)号：EP4135483A1
公开(公告)日：2023-02-15
申请号：EP21191173.0
申请日：2021-08-13
申请人： Tridonic GmbH & Co. KG
发明人： Schertler, Markus , Diez, Nikolaus
IPC分类号： H05B47/18 , H02H9/00
摘要： Disclosed is a current limiter (1) for a power supply (2) of a lighting control bus (6). The current limiter (1) comprises a first switch (12) arranged serially in a current path of the lighting control bus (6). The first switch (12) is configured to gate a current (I) of the lighting control bus (6) in accordance with a voltage (V) of the lighting control bus (6) applied to a control terminal of the first switch (12). The current limiter (1) further comprises a voltage divider (15, 16) connected in parallel to the current path. The current limiter (1) further comprises a second switch (17) interposed between the control terminal of the first switch (12) and an outer terminal of the voltage divider (15, 16). The second switch (17) is configured to shunt the voltage applied to the control terminal of the first switch (12) in accordance with a current (I B ) into the control terminal of the second switch (17). The current limiter (1) further comprises a Zener diode (18) interposed between the control terminal of the second switch (17) and an inner terminal of the voltage divider (15; 16). The Zener diode (18) is configured to gate the current (I B ) into the control terminal of the second switch (17) in accordance with a voltage drop between the inner terminal and the outer terminal of the voltage divider (15, 16) in excess of a reverse breakdown voltage of the Zener diode (18). This achieves an overvoltage protection of the first switch (12) and the current limiter (1).

7. 发明公开

EP4135482A1 RIPPLE-REDUCING CURRENT LIMITER FOR A POWER SUPPLY OF A LIGHTING CONTROL BUS 审中-公开
公开(公告)号：EP4135482A1
公开(公告)日：2023-02-15
申请号：EP21191169.8
申请日：2021-08-13
申请人： Tridonic GmbH & Co. KG
发明人： Schertler, Markus , Diez, Nikolaus
IPC分类号： H05B47/18 , H02H9/00
摘要： Disclosed is a current limiter (1) for a power supply (2) of a lighting control bus (6). The current limiter (1) comprises a resistor (11) and a switch (12) arranged serially in a current path of the lighting control bus (6). The switch (12) is configured to gate a current (I) of the lighting control bus (6) in accordance with a voltage (V) of the lighting control bus (6) applied to a control terminal of the switch (12). The resistor (11) is configured to sense the current (I) gated by the switch (12) as a voltage drop there across. The current limiter (1) further comprises a reference diode (13) configured to shunt the voltage (V) applied to the control terminal of the switch (12) in accordance with the voltage drop across the resistor (11). The current limiter (1) further comprises a capacitor (14) connected in parallel to the reference diode (13). This avoids high output current ripple when the current (I) is limited by the circuit.

8. 发明公开

EP4060887A1 COST AND SIZE OPTIMIZED DALI POWER SUPPLY 有权
公开(公告)号：EP4060887A1
公开(公告)日：2022-09-21
申请号：EP21163025.6
申请日：2021-03-17
申请人： Tridonic GmbH & Co. KG
发明人： Schertler, Markus , Diez, Nikolaus , Moosbrugger, Markus
IPC分类号： H02M3/335
摘要： Disclosed is a power supply (1) for a lighting control bus (2), comprising an isolated power converter (101) configured to inductively supply power from a primary side (102) of the converter to a secondary side (103) of the converter (101); the secondary side (103) comprising output terminals (104) connectable to the lighting control bus (2); the primary side (102) comprising a switch (105); and
a control circuit (106) configured to control, in a first conduction mode of the switch (105), a duty cycle of the switch (105) in dependence of a variation of an output voltage (107) of the power supply (1) measured on the primary side (102), and configured to adjust, in a second conduction mode of the switch (105), a duration of a switching cycle of the switch (105) in dependence of a variation of an average output current (108) of the power supply (1) measured on the primary side (102). This provides a cost and size optimized power supply for a lighting control bus.

9. 发明公开

EP3740038A1 DALI POWER SUPPLY USING RESONANT CONVERTER 审中-公开
公开(公告)号：EP3740038A1
公开(公告)日：2020-11-18
申请号：EP19174588.4
申请日：2019-05-15
申请人： Tridonic GmbH & Co. KG
发明人： Lochmann, Frank , Mitterbacher, Andre , Schertler, Markus , Vonach, Christoph
IPC分类号： H05B33/08 , H05B37/02
摘要： A DALI interface (1) comprises an integrated DALI power supply (2), in turn comprising a resonant half-bridge converter (5), adapted to generate and supply a first voltage of a DALI bus (15) output signal to the DALI bus (15). Moreover, the DALI interface comprises a reception unit (4), adapted to receive DALI signals, by at least indirectly measuring a current flow on the DALI bus (15) during active switching of the resonant half-bridge converter (5).

10. 发明公开

EP4380316A1 ISOLATED LED CONVERTER 审中-公开
公开(公告)号：EP4380316A1
公开(公告)日：2024-06-05
申请号：EP22210722.9
申请日：2022-12-01
申请人： Tridonic GmbH & Co. KG
发明人： Nachbaur, Stefan , Schertler, Markus , Stark, Stefan , Walch, Patrick
IPC分类号： H05B45/382 , H05B45/385 , H02M3/335
CPC分类号： H05B45/382 , H05B45/385 , H02M3/33523 , H02M3/33592 , H02M1/0009
摘要： Disclosed is an isolated LED converter (1), comprising a main transformer (111; 121), a primary-side current sensing circuit (112), a secondary-side current sensing circuit (13), and a primary-side control circuit (14). The main transformer (111; 121) comprises inductively coupled windings (111; 121), being arranged on a primary side (11) and on a secondary side (12) of the converter (1), respectively. The primary-side current sensing circuit (112) is arranged in series to the primary-side winding (111), and is configured to sense a signal (113) indicating a current (114, Iprim) through the primary-side winding (111). The secondary-side current sensing circuit (13) is arranged in parallel to the secondary-side winding (121), and is configured to sense a signal (131, ISNS) indicating a current (123) through a load (3) of the converter (1). The primary-side control circuit (14) is configured to sample and hold the signal (131, ISNS) indicating the current (123) through the load (3) during a sample-and-hold period (1421) in accordance with a zero-crossing, ZX (1141), of the signal (113) indicating the current (114, Iprim) through the primary-side winding (111). This assures a correct sampling in a plateau phase of the signal (131, ISNS) indicating a current (123) through the load (3).

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