UM10509 230 V (AC) 17 W dimmable demo board using the SSL2103 Rev. 1 — 16 January 2012 User manual Document information Info Content Keywords SSL2103, AC mains supply, dimmable LED driver, AC/DC conversion Abstract This user manual describes a demo board for evaluating an AC mains LED driver with a dimmer for 17 W, PAR38 LEDs using the SSL2103. It also describes key features and connections to aid the design of LED drivers for typical applications. UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 Revision history Rev Date Description v.1 20120116 first issue Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 2 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 1. Introduction WARNING Lethal voltage and fire ignition hazard The non-insulated high voltages that are present when operating this product, constitute a risk of electric shock, personal injury, death and/or ignition of fire. This product is intended for evaluation purposes only. It shall be operated in a designated test area by personnel qualified according to local requirements and labor laws to work with non-insulated mains voltages and high-voltage circuits. This product shall never be operated unattended. This user manual describes a demo board for evaluating an AC mains LED driver with a dimmer for 17 W, PAR38 LEDs using the SSL2103. It describes key features and connections to aid the design of LED drivers for typical applications. The demo board operates from an AC mains voltage of 230 V (AC). The resulting design is a trade-off between high-power factor, efficiency and dimmer compatibility, combined with high output stability and ElectroMagnetic Compatibility (EMC) compliance. 2. Safety Warning The demo board is powered by AC mains voltage. Avoid touching the board when power is applied. An isolated housing is obligatory when used in uncontrolled, non-laboratory environments. The secondary circuit with LED connection has galvanic isolation, however this isolation is not in accordance with any standard and has not been thoroughly tested. Always provide galvanic isolation of the mains phase using a variable transformer. The following symbols identify isolated and non-isolated devices. 019aab174 019aab173 a. Isolated Fig 1. UM10509 User manual b. Non-isolated Isolated and non-isolated symbols All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 3 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 3. Specification Table 1. Demo board specification Parameter Value Comment AC line input voltage 210 V (AC) to 250 V (AC), 10 %, 50 Hz 230 V (AC) model Output voltage (LED voltage) 17 V (DC) to 33 V (DC) Output voltage protection 33 V (DC) Output current (LED current) 500 mA typical Input voltage and load current dependency 5 % to +5 %, between 210 V (AC) and 250 V (AC) Output voltage and load current dependency 10 % to +10 %, between 19 V (DC) to 30 V (DC) Temperature stability 3 % to +3 % from 20 C to +100 C Current ripple 15 % at 500 mA typical value Maximum output power (LED power) 19 W depends on load Efficiency 78 % to 82 % Power factor >0.93 at 230 V (AC) Switching frequency 40 kHz to 60 kHz at 230 V (AC) input voltage Dimming range 100 % to 0 % for triac dimmers Board dimensions 82 mm 62 mm 35 mm LBH Operating temperature 0 C to 105 C - EMC Compliance FCC15 and IEC 61000-3-2 pre-compliant EN 55015 and IEC 61000-3-2 pre-compliant UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 4 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 a. Top view. b. Bottom view. Fig 2. UM10509 User manual 17 W PAR38 LED demo board All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 5 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 4. Demo board connections The demo board is optimized for an (AC) mains source of 230 V at 50 Hz. It is designed to work with multiple high-power LEDs having a total working voltage of between 18 V and 33 V. The output current is set to 600 mA at the typical load. The output voltage is limited to 33 V. When attaching an LED load to the board (hot plugging), an inrush peak current occurs due to the discharge of output capacitors C9 and C10. Frequent discharges can damage or deteriorate the LEDs. Remark: Mount the board in a shielded or isolated box for demonstration purposes. dimmer L AC mains 019aaa550 Fig 3. Demo board connections Place a galvanic isolated transformer between the AC source and the demo board, if one is used. Connect a series of between 5 and 10 LEDs to the output as shown in Figure 3. UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 6 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 5. Dimmers NXP Semiconductors has tested the performance of several triac-based dimmers having different specifications. The range of dimmers which have been tested with the demo board are given in Table 2. Table 2. Tested dimmers Manufacturer Part Leading-edge dimmers Berker 2819 Berker 2873 Gira 030000/I01 Busch-Jaeger Elektro 2250U Busch-Jaeger Elektro 2200 Clipsal E2032v Legrand V004 Flexalite FL630D Kiny DF-300P-2w Trailing edge dimmers UM10509 User manual Berker 286710 Berker 2874 Gira 030700/I02 Busch-Jaeger Elektro 6513 U102 Richmond lighting DG09007 Richmond lighting DG07093 Jung licht management 243E4 Jung licht management 22570E All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 7 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 6. Functional description Refer to Figure 4 “Demo board 230 V (AC) schematic” on page 12 for more information. The AC mains LED driver IC SSL2103 controls and drives a flyback converter circuit and ensures correct dimmer operation. The IC has three integrated high-voltage switches, one of which, located between pins DRAIN and SOURCE, controls flyback input power. When the switch opens, current flows and is stored as energy in transformer TX1. The current is interrupted when either: • the duty factor exceeds the 75 % maximum level set using the PWMLIMIT pin • the voltage on the SOURCE pin exceeds 0.5 V In the next cycle, the energy stored in the transformer discharges via D6 to output capacitors C9 and C10. The load absorbs the energy. The external RC components connected to pins RC and RC2 control the internal oscillator timing. These external components set the flyback converter frequency. The upper and lower frequency values are set using the BRIGHTNESS pin. The ratio between R11 and R12 sets flyback converter frequency range. The two other switches in the IC are called weak-bleeder (pin WB_DRV) and strong-bleeder (pin SB_DRV). When the voltage on these pins is below a certain value, typically 52 V, the strong-bleeder switches on. A path is provided for the load current to the dimmer during zero voltage crossing. The dimmer timer is reset. When the voltage on the pins is above 52 V and the voltage on pin ISENSE > 100 mV, transistor Q3 switches the weak-bleeder on. The weak-bleeder supplies a boosted (hold) current to the dimmer to maintain stable latching when the flyback converter draws insufficient current. Figure 4 shows the bleeder voltage against time in dimmed and undimmed modes. The demo board is optimized to work at a power factor above 0.9. The flyback converter operates during the MOSFET on-time. Capacitors C9 and C10 buffer the flyback converter output power. This configuration gives the circuit a resistive input current behavior in undimmed mode; see curve II in Figure 4. In dimmed mode, the dimmer latch and hold current must be maintained. In addition, add a damper to reduce the inrush current and dissipate the electric power stored in the dimmer LC filter. A serial resistor is used as a damper at power ranges of less than 10 W. However, a serial resistor is inefficient at higher power ranges. The inefficiency is due to the significant voltage drop and dissipation that occurs from the supply current to the flyback converter. The Darlington transistor Q4 provides the necessary high gain. Q4 is saturated while its base voltage is higher than the emitter voltage plus the base-emitter voltage (VBE). The voltage across emitter resistor R14 increases with the current. When the emitter voltage rises above the threshold, Q4 stops saturation, turns off and R15 limits the current. Choose the values of D9 and R13 with care to ensure consistent operation. A Darlington transistor provides the necessary high current gain. This modification changes the specifications of efficiency and power factor. UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 8 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 A combination of serial resistance and a parallel damper is chosen. The serial resistance comprises R14, R15 and R17. The parallel group damper comprises C1, C13 and R1 in parallel with C8 and R7 for optional fine-tuning. To improve efficiency, the major serial damping is activated only when there is a peak inrush current (active inrush current limiter). In normal operation, the Darlington transistor Q4 conducts, bypassing R15 and lowering ohmic losses. When a high inrush current is detected, Q4 starts to clip at its maximum current of 500 mA. The flyback converter input circuit must have a filter that is partially capacitive. C2, L2, C3, C13 and L1 form the filter that blocks most of the disturbance caused by the flyback converter input current. The drawback of this filter is a reduced power factor due to the capacitive load. A lower flyback converter power relative to the capacitive value of this filter/buffer reduces the power factor. With the 230 V (AC) design using 330 nF capacitors, a minimum power factor of 0.93 is achieved. The demo board has a feedback loop to limit the output current. The feedback loop senses the LED current through sense resistor R25, and current mirror circuit with IC4. The current level can be set using R27 and R29. The same feedback loop is also used for overvoltage protection. If the LED voltage exceeds 33 V, a current starts to flow through R23 and D11. The current through the optocoupler IC3 forces pins PWMLIMIT and BRIGHTNESS LOW. At a value below 400 mV, the MOSFET on-time is zero. The feedback loop has a proportional action only. The gain is critical because of phase shift caused by the flyback converter and C6. The relationship between pin PWMLIMIT and the output current is quadratic in nature. The resulting output current spread is acceptable for most LED applications. If higher demands are placed on LED current spread, a secondary regulation circuit in combination with an added pure current action control is advisable. The dimming range is detected by sensing the average rectified voltage. R2 and R10 form a voltage divider and C4 filters the resulting signal. The flyback converter sets its duty factor and converter frequency accordingly. UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 9 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 7. System optimization The modifications described in this section can be applied to achieve customer application specifications. 7.1 Changing output voltage and LED current One of the major advantages of a flyback converter over other topologies is its suitability for driving different output voltages. In essence, changing the winding ratio while maintaining the value of the primary inductance shifts the output working voltage accordingly. Part of the efficiency of the driver is linked to the output voltage. A lower output voltage increases the transformation ratio and cause higher secondary losses. In practice, mains dimmable flyback converters have an efficiency of: • 85 % for higher output power and voltage such as 60 V • 60 % for lower output power and voltage such as 1 W and 3 V At lower voltages, synchronous rectification is advisable to reduce losses after high current is rectified. NXP Semiconductors TEA1761 and TEA1791 synchronous rectification controllers are ideal for this purpose. Calculations for transformer properties and peak current are described in detail in application note AN10754, SSL2101 and SSL2103 dimmable mains LED driver. 7.2 Changing the output ripple current The LED voltage, the LED dynamic resistance and the output capacitor determine the output ripple current. While the values of C9 and C10 are chosen to optimize capacitor size with light output. A ripple of 15 % results in an expected deterioration of LED brightness of less than 1 %1. The size of the buffer capacitor is determined using Equation 1. I led 1 C10 + C9 = ------- --------------------------------- I 6 f net R dyn (1) Example: A 5 % ripple current, a 50 Hz AC mains frequency and a 0.6 dynamic resistance, 20 results in a combined C9 + C10 value of ---------------------- = 111 mF . 300 0.6 A ripple current of 25 % and a dynamic resistance of 6 , results in a value for C9 + C10 4 of ----------------------- = 2200 F . 300 6 Using a series of LEDs, the dynamic resistance of each LED can be added to the total dynamic resistance. 1. M. Weiland 28-07-2006 UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 10 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 7.3 Adapting to high-power reverse phase transistor dimmers Reverse phase (transistor) dimmers differ in two ways that can be beneficial: • Due to the negative phase, there is no inrush current when the dimmer triggers. Using triac dimmers, there is a sudden voltage difference over the input, resulting in a steep charge of the input capacitors. The resulting peak current results in higher damper dissipation. Using transistor dimmers, the steep charge is missing. The input capacitors are less stressed and the input circuit is less prone to audible noise. • Transistor dimmers contain active circuitry that requires a load charge while the dimmer is open. To avoid internal dimmer losses, the dimensioning of the internal supply voltage generation circuit is critical. This means that the remaining voltage drop across the lamp must be low enough to allow this charge to be reached. The minimum load to achieve such a low voltage drop results in inefficient operation at low output power levels. The cause of which is that most of the energy is wasted driving the dimmer instead of used to producing light. The weak-bleeder resistor values of R3 and R4 are chosen to ensure that any losses are within acceptable limits. These losses only occur in dimmed mode at the end of the phase. The voltage drop in some transistor dimmers is not sufficient for full control of the dimming range. The SSL2103 senses the dimming range by taking the average rectified voltage as input. To compensate for the reduced voltage difference, the voltage detection can be made more sensitive by placing a Zener diode in series with R2. The dimming curve is steeper and shifted when using triac dimmers because of increased sensitivity. 7.4 Changing the output current The output current can be set initially by varying the values of R29 and R27. The power section and transformer train can withstand output currents up to 500 mA, but losses increase at higher current levels. Resistors R19/R19A limit the primary peak current and consequently the maximum output power. UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 11 of 17 xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x R1 2.2 kΩ 2W RGND [1] - C1 100 nF 250 V N D3 BC1 + BD1 L1 fer coil L2 680 μH C2 0.1 μF D1 n.c. D4 180 V 3W C3 0.1 μF 1 TX1 R34 10 kΩ N1 Q2 R8 3.9 kΩ R9 3.9 kΩ R10 12 kΩ 1 SB_DR V WB_DR V 3 VCC 4 R11 8.2 kΩ R6 7.5 kΩ R12 100 kΩ R28 10 kΩ IC1 2 VCC [1] + C4 4.7 μF 50 V GND HVDET 13 DRAIN 12 PWR_DRV SOURCE R28 10 Ω R20 1 kΩ RGND [1] Q4 D9 ZD4V3 R14 3.3 Ω 10 Ω/10 Ω/10 Ω NPN R18 18 kΩ R23 10 kΩ D11 ZD33 R24 8.25 kΩ 1% R26 10 kΩ R31 1 kΩ R22 10 Ω VCC [1] R30 0Ω D10 R21 100 kΩ R16 100 kΩ C6 100 nF 63 V R19A n.c. R19 0.68 Ω 11 C5 330 pF R25 0.22 Ω 0.25 W SGND o 3 Q3 D8 ZD33V + N4, N5 8 14 10 AUX 5 BRIGHTNESS 9 6 ISENSE RC2 8 PWMLMT 7 RC SSL2103 IC3-A R13 390 kΩ o 2 + C10 1 mF 35 V C9 1 mF 35 V D7 C8 10 μF 50 V 4 IC3-B + o N3 5 C12 100 μF 16 V R27 51 kΩ R29 6.2 kΩ 2 1 3 4 IC4 BCM61B R32 619 kΩ SGND SGND C11 2.2 nF 400 V C7 1 nF SGND R15 R17 220 Ω 20 Ω 680 Ω/680 Ω/680 Ω 62 Ω/62 Ω/62 Ω aaa-001772 Some resistor values are shown with format x/x/x which represent the values required of resistors connected in parallel. Fig 4. Demo board 230 V (AC) schematic UM10509 12 of 17 © NXP B.V. 2012. All rights reserved. (1) Optional. 230 V (AC) 17 W dimmable demo board using the SSL2103 Rev. 1 — 16 January 2012 All information provided in this document is subject to legal disclaimers. R2 1.5 MΩ D5 diode04/05 N2 Q1 R3 11 kΩ/2 W 22 kΩ/22 kΩ R5 4.7 kΩ/2 W 10 kΩ/10 kΩ IC GND R4 11 kΩ/2 W 22 kΩ/22 kΩ L3 100 μF D6 6 o NXP Semiconductors C13 2.2 nF 630 V 8. Demo board schematic UM10509 User manual L UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 9. PCB components Table 3. Demo board 230 V (AC) components Reference Quantity Description Part/manufacturer Comment BD1 1 BD_DB107S - - C1 1 100 nF; 250 V CM150-5_6X12 - C2; C3 2 0.1 F; 0.1 F; 400 V CM150-5_6X18 - C4 1 4.7 F; 50 V CAL04/5 - C5 1 330 pF; 0805 - - C6 1 100 nF; 63 V CAL04/5 - C7 1 1 nF; 0805 - - C8 1 10 F; 50 V; 1206 - - C9; C10 2 1 mF; 35 V; ECOUT - - C11 1 2.2 nF; 400 V (AC); C-POLY - - C12 1 100 F; 16 V CAL04/5 - C13 1 2.2 nF; 630 V CM150-5_6X12 - D3 1 ultra-fast diode 02/10; axial lead - - D4 1 diode; DIP; 180 V; 3 W - - D5; D6 2 switching diode; DIP-2 - - D7 1 switching diode; SO8; SMD - - D8 1 Zener diode; 33 V ZD33V - D9 1 Zener diode; 4.3 V; SOD80 ZD/4V3 - D10 1 diode; SOD80 - - D11 1 Zener diode; 33 V ZD33V - IC1 1 LED driver/dimmer IC SSL2103; NXP Semiconductors IC3 1 IC04-10/PC LTV-817B; Lite-On IC4 1 BCM61B - - L1 1 FERCHOCK; Ferrite Coil - - L2 1 L-DIP; 680 H - - L3 1 WECHOCK-2; 100 H - - Q1; Q2 2 NPN transistor; TO92 - - Q3 1 MOSFET; TO251 - - Q4 1 NPN transistor ST901T - R1 1 R-POWER; 2.2 k; 2 W - - R2 1 1.5 M; 1206 - - R3; R4 2 R-POWER; 11 k; 2 W; 22 k/22 k - - R5 1 R-POWER; 4.7 k; 2 W; 10 k/10 k - - R6 1 7.5 k; 0805 - - R8; R9 2 3.9 k; 0805 - - R10 1 12 k; 0805 - - R11 1 8.2 k; 0805 - - R12; R21 2 100 k; 0805 - - UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 13 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 Table 3. Demo board 230 V (AC) components …continued Reference Quantity Description Part/manufacturer Comment R13 1 RT3.5MM-2W20; 390 k - - R14 1 R-POWER; 3.3 ; 10 /10 /10 - - R15 1 R-POWER, 220 ; 680 /680 /680 - - R16 1 100 k; 0805 - - R17 1 R-POWER, 20 ; 62 /62 /62 - - R18 1 18 k; 0805 - - R19 1 0.68 ; 1206 - - R19A 1 NC; 1206 - - R20 1 1 k; 0805 - - R22 1 10 k; 0805 - tuned on LED/Aux voltage R23; R26 2 10 k; 0603 - - R24 1 8.25 k 1 %; 0603 - - R25 1 RT3.5MM; 0.22 ; 0.25 W - - R27 1 51 k; 0603 - - R28 1 10 ; 0805 - - R29 1 6.2 k; 0603 - - R30 1 0 ; 0603 - - R31 1 1 k; 0603 - - R32 1 619 1 %; 0603 - - R33; R34 2 10 k; 0805 - - TX1 1 EFD25-DIP - - UM10509 User manual All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 14 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 10. Test results 10.1 Input/output stability Table 4. UM10509 User manual Input and output stability test results Parameter Conditions VIN AC mains voltage 220 230 240 250 260 input power (W) 16.176 17.703 18.135 18.28 18.419 Power factor 0.962 0.953 0.945 0.94 0.935 VLED (V) 29.57 29.81 29.828 29.82 29.83 ILED (A) 468.7 509 520.5 525.2 527.6 PO (W) 13.836 15.153 15.507 15.629 15.715 (%) 85.5 85.6 85.5 85.5 85.3 All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 15 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 11. Legal information 11.1 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. 11.2 Disclaimers Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors and its suppliers accept no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. UM10509 User manual Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). NXP does not accept any liability in this respect. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Evaluation products — This product is provided on an “as is” and “with all faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates and their suppliers expressly disclaim all warranties, whether express, implied or statutory, including but not limited to the implied warranties of non-infringement, merchantability and fitness for a particular purpose. The entire risk as to the quality, or arising out of the use or performance, of this product remains with customer. In no event shall NXP Semiconductors, its affiliates or their suppliers be liable to customer for any special, indirect, consequential, punitive or incidental damages (including without limitation damages for loss of business, business interruption, loss of use, loss of data or information, and the like) arising out the use of or inability to use the product, whether or not based on tort (including negligence), strict liability, breach of contract, breach of warranty or any other theory, even if advised of the possibility of such damages. Notwithstanding any damages that customer might incur for any reason whatsoever (including without limitation, all damages referenced above and all direct or general damages), the entire liability of NXP Semiconductors, its affiliates and their suppliers and customer’s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars (US$5.00). The foregoing limitations, exclusions and disclaimers shall apply to the maximum extent permitted by applicable law, even if any remedy fails of its essential purpose. 11.3 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 1 — 16 January 2012 © NXP B.V. 2012. All rights reserved. 16 of 17 UM10509 NXP Semiconductors 230 V (AC) 17 W dimmable demo board using the SSL2103 12. Contents 1 2 3 4 5 6 7 7.1 7.2 7.3 7.4 8 9 10 10.1 11 11.1 11.2 11.3 12 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety Warning. . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Demo board connections . . . . . . . . . . . . . . . . . 6 Dimmers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Functional description . . . . . . . . . . . . . . . . . . . 8 System optimization . . . . . . . . . . . . . . . . . . . . 10 Changing output voltage and LED current . . . 10 Changing the output ripple current . . . . . . . . . 10 Adapting to high-power reverse phase transistor dimmers . . . . . . . . . . . . . . . . . . . . . 11 Changing the output current . . . . . . . . . . . . . . 11 Demo board schematic . . . . . . . . . . . . . . . . . . 12 PCB components . . . . . . . . . . . . . . . . . . . . . . . 13 Test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Input/output stability . . . . . . . . . . . . . . . . . . . . 15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 16 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2012. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] Date of release: 16 January 2012 Document identifier: UM10509