UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non
Contents
1. 250 200 150 90 Fig 9 Output current as a function of AC mains input voltage 100 110 120 130 140 Vmains V 7 4 Load regulation aaa 017589 360 ED current 1 mA 2 330 ae __ 3 300 270 240 210 180 35 1 138 Vmains 2 120V 3 96 V dimmed output 40 45 50 55 LED voltage V 60 Fig 10 Output current as a function of output voltage at nominal mains All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved UM10874 User manual Rev 1 23 April 2015 13 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 7T 5 Dim curves Figure 11 shows the output current when a leading edge dimmer or a trailing edge dimmer is used The output current without dimmer is also indicated aaa 017590 340 ILED no dimmer mA 255 170 1 85 2 150 Conduction angle 1 Trailing edge 2 Leading edge Fig 11 Output current as a function of dimmer angle Dimming compatibility includes smooth dimming without any flashing or flickering effects across the complete dimming range Th2. lx IRE Ren 18 Bill Of Materials BOM 19 Board 21 Inductor specifications 22 Inductor layout and dimensions 22 Electrical specifications 22 Abbreviations 23 References 23 Legal information 24 5 24 5 24 5 24 Contents oes ae KE IG EE 25 Please be aware that important notices concerning this document and the product s described herein have been included in section Legal information NXP Semiconductors N V 2015 All rights reserved For more information please visit http Awww nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 23 April 2015 Document identifier UM10874
3. R4 resistor 820 1 96 250 mW 1206 R5 resistor 10 1 96 63 mW 0603 R6 resistor 33 1 96 250 mW 1206 R7 resistor 470 5 2 W THT ROX2SJ470R TE Connectivity R8 resistor 750 1 96 250 mW 1206 R9 resistor 27 1 96 63 mW 0603 R10 resistor 39 1 956 250 mW 1206 R11 resistor 1 3 MQ 1 96 63 mW 0603 R12 R13 resistor 1 3 1 96 250 mW 1206 R14 R15 R16 resistor 220 0 1 96 63 mW 0603 i UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 19 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver Table 2 SSL5231BDB1289 demo board full BOM continued Reference Description and values Part number Manufacturer R17 resistor 5 6 1 63 mW 0603 R18 R19 resistor 180 kO 1 96 250 mW 1206 R20 resistor 4 7 1 250 mW 1206 RV1 resistor VDR 150 V 20 J VDRS07H150BSE Vishay U1 dimmable LED Driver SSL5231BT SSL5231BT NXP Semiconductors WB1 wire bridge 0 8 mm P 5 08 mm 923345 02 3M X1 X2 connector terminal block 5 00 mm 1715022 Phoenix Contact UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23
4. 3 0 31 Risus 3 When a dimmer is used the typical maximum peak current that can be reached equals 1 8 4 I ak max UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 8 of 25 NXP Semiconductors U M1 0874 UM10874 6 3 2 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver For this application the LED current amounts 325 mA which means a sense resistor of 0 9 Q is required Using this resistor value would result in a maximum peak current of 18 V 099 20A The maximum allowed input current lisw 2 A limits the current through the switch of the IC The peak current for the IC is too high It also implies that inductor L2 must be used with a saturation current of at least 2 A During normal operation the peak current is approximately 4 times the average LED current 1 3 A So an inductor saturation current of maximum 1 5 A is sufficient To meet the requirements to lower the peak IC current and the peak inductor current split sense can be used Split sense uses the existing head room in the peak current detection to lower the IC and inductor current Split resistor sensing Figure 6 shows the principle of split resistor sensing The peak of the primary stroke the inductor current flows through both sense resistors and during the secondary stroke the
5. V 2015 All rights reserved User manual Rev 1 23 April 2015 23 of 25 NXP Semiconductors UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 15 Legal information 15 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 15 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 w
6. disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 6 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 6 Functional description and options UM10874 6 1 6 2 6 2 1 Input filtering Capacitors C1 and C2 and inductors L1 and L3 filter the switching current from the buck converter to the line Capacitors C1 and C2 also provide a low impedance path for the switching current The value of capacitor C2 is selected so the application passes for both conducted and radiated EMI The 10 Q input series resistance together with varistor MOV1 across the AC bridge rectifier input provides protection against transient surge voltages To increase the immunity to line surges the input resistance is added Do not omit this resistor To improve dimming performance an extra notch filter inductor L3 capacitor C11 and resistor R2 is added to the input The extra filter suppresses the common mode disturbance in the 200 kHz to 300 kHz range Furthermore inductor L3 reduces the repetitive inrush current to maximum 2 3 A The notch filter isolates capacitor C1 from the dimmer improving the dimming performance Open load protection The driver board is protected when the LED load is accidentally left open The open load protection is a non latched protection It recovers when the LED string is reconnected The LED current is not con
7. found in the SSL5231BT data sheet It is 1 8 V typical for the SSL5231BT For a first set up assume lpeak inductor 4 X lLED AV Rbond 92 Q To have some margin Ipeak inductor must be lt 1 8 A If Ipeak inductor exceeds 1 8 A the IC already moves to peak current regulation during typical operation Based on Equation 5 to Equation 8 the following can be concluded R _ Risnscavy Risns tot R 9 ISNS pri 8 1 bond Risns sec Risns tot T Risns pri Rbond 1 0 The extra advantage of the split sense configuration is that it improves the THD The peak current drawn from the mains is shifted towards the middle of the half mains period The disadvantage of using the split sense configuration in a buck converter is obvious The bus voltage and the LED voltage determine the duty cycle So the line regulation and load regulation is worse than for a single sense resistor application The line regulation and load regulation are not affected in a buck boost converter application that uses split sense For the SSL5231BDB1289 demo board the maximum peak current is limited to Ipeak reg 1 33 A according to I 15 5 11 peak reg R R ISNS pri ISNS sec UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 10 of 25 NXP Semiconductors U M1 0874 UM10874 SSL5231BDB12
8. inductor current only flows through the secondary sense resistor Vbus SENSE RISNS pri RISNS sec GND IC j AD Yr LED GND return aaa 017491 Fig6 Split resistor sensing principle When the split sense resistor configuration is set up to make maximum use of the overcurrent sense protection head room of the buck converter application the IC still regulates to the average LED current The average LED current measured by the voltage between the ISNS pin and the GND pin of the IC divided by the Rjsws resistor When the application is dimmed the converter shifts to peak current regulation To regulate to the average LED current the maximum achievable line and load regulation are maintained Equation 5 to Equation 8 for a buck converter can be used TEN Rjsusppri RrsNs sec Risws tot 5 inductor 0 31 Risns av I 6 LED AV All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 9 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver Rjsus Av Rrsus sec 8 Risws priy Rpona 7 V 8 LLEDP 8 Vous Where Rbona is the bond wire resistance on the ISNS pin inside the IC lpeak inductor Can be calculated with the SSL5231BT calculation tool Vocp can be
9. product names service names and trademarks are the property of their respective owners GreenChip is a trademark of NXP Semiconductors N V NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 24 of 25 NXP Semiconductors UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 16 Contents 12 1 12 2 13 14 15 15 1 15 2 15 8 16 Introduction 3 Safety warning 3 Specifications 4 Board photographs 5 Board connections 6 Functional description and options 7 Inp t filtering s ranri eere ote BN eis 7 Open load protection 7 IC not operating 7 IC operating with OVP 8 LED current and sense resistor 8 Single resistor sensing 8 Split resistor sensing 9 Dimmer zero level restore circuit 11 12 Efficiency 12 Power Factor 12 Line regulation 13 Load regulation 13 Dim curves 14 ElectroMagnetic Interference EMI 15 Thermal images 16 Protections iii ior rte Rer 17 Schematic
10. 89 120 V 18 W dimmable buck non isolated LED driver 6 4 Dimmer zero level restore circuit When the rectified AC line voltage drops to below the LED voltage a buck converter based application stops switching The impedance towards the mains becomes high ohmic To suppress peak voltages most dimmers incorporate a filter capacitor in parallel to the switching device Because the buck converter becomes high ohmic this capacitor is not discharged properly It remains charged to the LED voltage If this capacitor is not discharged properly deep dimming is hampered The dimmer may not have a stable and small phase cut To overcome this problem the circuit around transistor Q4 builds a discharge circuit or zero level restore circuit It is not a bleeder circuit as it does not maintain the dimmer hold current Transistor Q4 is set to conduct a maximum current of 20 mA This current is set with V V _ Vpe Q2 Vrs Ic g4 R6 12 The Vk voltage of transistor Q2 the voltage across R5 is 0 6 V typical Transistor Q2 regulates the current of transistor Q4 R5 RA turns off transistor Q4 So transistor Q4 does not overheat and no efficiency decrease OCCUIS When the voltage on Vie exceeds VI gp in this case 50 V the voltage divider Capacitor C4 is used to reduce the control bandwidth So transistor Q4 does not oscillate at a high frequency improving the conducted EMI significantly Resistor R10 supplies the zero restore cir
11. 9S 9 Schematic Fig 14 SSL5231BDB1289 minimum component count schematic diagram Vi VRECT bus 516 BD1 R8 MD6S 750 kQ RIG ES 3 4 at QW SPD02N60C3 3 3 mH 120V F1 R2 E PESD15VL1BA AC AT 560 Q 1N4148W C41 U1 this junction close MKDS 1 5 2 4 c1 DEMOVP close to pin 1 R17 to pin 1 220 pF 22nF 1 500 V 400 V GND 5 6 s RV1 R18 1 N VDRS07H150BSE close U to pin 1 180 kQ 4 VLEDP 100 2W 12 2 3 3 nF 220nF 100 V 450 V x2 BC847B MKDS 1 5 2 10 KQ 2 R6 D5 330 BZX384 C68 n m 1 GND 923345 02 dimmer zero level restore required n m VLED for deep dim and no LF flicker 48V n m not mounted aaa 017581 JoAup Pejejosr uou yong M 8L A 021 682188812 29155 7280 5 5 dXN NXP Semiconductors UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 10 Bill Of Materials BOM Table2 SSL5231BDB1289 demo board full BOM Reference Description and values Part number Manufacturer BD1 bridge rectifie
12. April 2015 20 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 11 Board layout Figure 15 shows the SSL5231BDB1289 demo board layout and assembly on both sides Inductors L1 L2 and L3 can be mounted either vertically or horizontally aaa 017583 a Top view aaa 017584 b Bottom view Fig 15 SSL5231BDB1289 demo board assembly UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 21 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 12 Inductor specifications 12 1 Inductor layout and dimensions part must insert fully to surface A in recommended grid 0 31 4 2 54 3 81 10 00 1676 n max max dot locates term 1 Fi 15 75 750341594 max H term no s for ref only lot code and date code 1 32 MEE e k s PE 375 7 6 1 t recommended Dimensions in mm p c pattern component side aaa 005801 1 Dimensions in mm Fig 16 Inductor layout and dimensions 12 2 Electrical specifications Table 3 Test specifications At 25 C unless stated otherwise Parameter Test conditions Value DC resi
13. Bottom view Fig 3 SSL5231BDB1289 demo board photographs UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 5 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 5 Board connections UM10874 The SSL5231BDB1289 demo board is optimized for a 120 V 60 Hz supply In addition to the mains voltage optimization the board is designed to work with multiple LEDs or an LED module with a low forward voltage The mains connection of the SSL5231BDB1289 demo board is different from other demo boards Connect the mains to the screw connector X1 Remark The maximum rated voltage of the board is 150 V AC The anode of the LED load is connected to pin 1 of connector X2 The cathode is connected to pin 2 of connector X2 Use an LED string with a typical forward voltage of 48 V 10 on the SSL5231BDB1289 demo board Under the expected conditions the output current is 325 mA when no dimmer is used It is possible to shorten the board by mounting C8 and C9 upright Connector X2 can be mounted at a different position The board becomes 10 mm shorter If the board is shortened wire bridge WB1 must be placed aaa 017571 Fig 4 SSL5231BDB1289 board connections All information provided in this document is subject to legal
14. able for the specified use without further testing or modification 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 UM10874 All information provided in this document is subject to legal disclaimers 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 E
15. arranty 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 suit
16. 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 Safety of high voltage evaluation products 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 that is qualified according to local requirements and labor laws to work with non insulated mains voltages and high voltage circuits The product does not comply with IEC 60950 based national or regional safety standards NXP Semiconductors does not accept any liability for damages incurred due to inappropriate use of this product or related to non insulated high voltages Any use of this product is at customer s own risk and liability The customer shall fully indemnify and hold harmless NXP Semiconductors from any liability damages and claims resulting from the use of the product Translations A non English translated version of a document is for reference only The English version shall prevail in case of any discrepancy between the translated and English versions 15 3 Trademarks Notice All referenced brands
17. cuit is supplied from the LED voltage When the zero level restore circuit is not used resistor R10 must be connected to GND All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 11 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 7 Performance UM10874 7 1 7 2 The performance was measured using an LED load with a 48 V forward at a 440 mA LED output current Figure 7 to Figure 12 show the performance data Efficiency aaa 017586 92 n 96 91 90 89 88 87 86 90 100 110 120 130 140 Vmains V Fig 7 Efficiency as a function of AC mains input voltage Power Factor aaa 017587 PF 0 95 0 9 0 85 0 8 35 56 77 98 119 140 Vmains V Fig 8 Power factor as a function of AC mains input voltage All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 12 of 25 NXP Semiconductors UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 7 3 Line regulation aaa 017588 350 ILED mA 300
18. e SSL5231BDB1289 demo board has been tested with a wide selection of dimmers It is compatible with most leading edge and trailing edge dimmers on the market UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 14 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 7 6 ElectroMagnetic Interference EMI The ElectroMagnetic Interference EMI was measured according to the FCC15 class B standard The board complies with the requirements Figure 12 shows the measurement results aaa 017955 SS ae 6 17 Sie a LI us T x 2 Sit eS 1 101705 80008 GEG hh E T a a a re oe fa T 2 1 rT SSS ee Fa uil HE Ji i Ee ee ee s neos b AC mains Neutral Fig 12 Conducted EMI performance UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 15 of 25 NXP Semiconductors U M1 0874 UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 7 7 Thermal images The thermal images are taken after a settling time of 1 hour and in dimmed and undimmed conditions aaa 017967 aaa 01759T 18 W dimmin
19. g top view b 18 W no dimming bottom view Hottest spot The buck inductor L2 Hottest spot the SSL5231BT aaa 017593 aaa 017968 c 90 leading edge dimmed top view d 90 leading edge dimmed bottom Hottest spot Latch resistor R7 view Hottest spot Diode D2 aaa 017592 e Dimming to 15 W Hottest spot Diode D2 Fig 13 Thermal images All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 16 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 8 Protections The IC incorporates the following protections UnderVoltage Lockout UVLO Cycle by cycle OverCurrent Protection OCP Internal OverTemperature Protection OTP Cycle by cycle maximum on time protection Output OverVoltage Protection OVP Output Short Protection OSP For more detailed information about the IC protections see the SSL5231BT data sheet Ref 1 UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 17 of 25 19sn SL0Z Idy z L joefqns s 1u uinoop 511 u uoneuuojul GZ JO 8L pamasa 8102 A N siolonpuooltu
20. isolated LED driver 3 Specifications Table 1 lists the specification of the SSL5231BDB1289 demo board Table 1 SSL5231BDB1289 specifications Symbol Parameter Value V mains AC mains supply voltage 120 V AC 10 96 Imains AC mains input current 150 mA 5 ViED output voltage 48 V 10 96 ILED output current 325 mA AlLED AILED nom Vmains line regulation gt 3 96 at Vmains 10 96 gp nom VLED load regulation gt 96 at Vi gp 10 96 n efficiency 87 96 PF power factor 0 95 Toper operating temperature 40 C to 85 C board dimensions 30 mm x 85 mm conducted ElectroMagnetic Interference EMI FCC15 class B IEC61000 3 2 class C for Pin lt 25 W limit Figure 2 shows the dimensions of the demo board E mains in SSL5231BDB1289 LED out component side area d soldering smd side area Dimensions in mm Fig 2 SSL5231BDB1289 demo board dimensions aaa 017568 UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 4 Board photographs woonporu 017568 E204460 01 94V 0 aaa 017570 b
21. nductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 6 2 2 IC operating with OVP When the voltage in the non operating mode is set to a safe level for the output capacitor the voltage in the operating mode can be set The OVP is triggered when during four consecutive high frequency cycles 1 8 V is detected at the DEMOVP pin The output voltage is set with Equation 2 18 1 RIS v L8 14 018 2 The output voltage must never exceed the rated DC voltage of the output capacitor The preferred value for resistor R17 is 5 6 kO Do not use a resistor value that exceeds 18 kQ The DEMOVP pin is a high ohmic input so it is sensitive to disturbance causing false OVP triggering 6 3 LED current and sense resistor To optimally profit from the excellent current stability of the SSL5231BT overtemperature 50 ppm MELF type resistors are recommended to sense the LED current The output current stability range drops to 3 compared to 7 over the full temperature range for normal 200 ppm 1210 type resistors 6 3 1 Single resistor sensing Figure 5 shows the principle of single resistor sensing Single resistor sensing is the traditional way of sensing the peak current through the switch and inductor Vbus K SENSE RISNS GND IC P L 70 AW LED GND return aaa 017488 Fig5 Single resistor sensing principle The LED current for single resistor sensing is calculated with Equation
22. r 1 kV 500 mA MD5S Rectron C1 capacitor 22 5 96 400 V PET THT ECQE4223JF Panasonic C2 capacitor 220 nF 5 96 450 V PET THT ECWF2W224JAQ Panasonic C3 capacitor 330 nF 10 96 450 V PET THT ECWFD2W334kKQ Panasonic C4 capacitor 2 2 nF 10 96 50 V X7R 0603 l C5 capacitor 2 2 uF 10 96 6 3 V X7R 0603 C1608X7R0J225K080AB TDK C6 capacitor 4 7 uF 10 96 25 V X7R 0805 C2012X7R1E475K125AB TDK C7 capacitor 150 nF 10 50 V X7R 0603 C8 C9 capacitor mount horizontal 330 uF UPW1J331MHD Nichicon 20 63 V ALU THT C10 capacitor 68 pF 1 500 V COG 0805 CBR08C680FCGAC KEMET C11 C13 capacitor 220 pF 5 96 500 V COG 1206 12067A221JAT2A AVX C12 capacitor 3 3 nF 10 96 100 V X7R 0603 D1 diode 280 V 1 1G E3 61T Vishay D2 diode TVS 15 V PESD15VL1BA NXP Semiconductors D3 diode 600 V 1 A MURS160 E3 52T Vishay D4 diode 100 V 300 mA 1N4148W 7 F Diode Inc D5 diode zener 68 V 300 mA BZX384 C68 NXP Semiconductors F1 fuse slow blow 1 A MST 1A 250V Multicomp L1 inductor mount horizontal 3 3 mH 744772332 W rth Elektronik 280 mA L2 transformer 350 uH 5 96 750341594 Wirth Elektronik L3 inductor 3 8 mH 190 mA 13R335C Murata Q1 MOSFET N 650 V 1 8A SPD02N60C3 Infineon Q2 transistor NPN 45 V 100 mA BC847B NXP Semiconductors Q4 transistor NPN 400 V 300 mA KSPA44TA Fairchild R1 resistor 10 Q 10 2 W THT EMC2 10RK Welwyn Components R2 resistor 560 Q 5 250 mW 1206 z
23. rea 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 the operation of the SSL5231BDB1289 120 V 18 W eco THD dimmable LED driver The buck converter topology provides a simple and efficient solution for mains dimmable LED recessed light applications with a very good dimmer compatibility The SSL5231BDB1289 demo board complies with EMI and safety regulations Figure 2 shows dimensions of the SSL5231BDB1289 demo board Figure 3 shows the top view and bottom view of the SSL5231BDB1289 demo board 2 Safety warning The demo board input is connected to the 120 V mains supply Avoid touching the board while it is connected to the mains voltage and when it is in operation An isolated housing is obligatory when used in uncontrolled non laboratory environments Galvanic isolation from the mains phase using a fixed or variable transformer is always recommended Figure 1 shows the symbols on how to recognize these devices 019aab173 019aab174 a Isolated b Not isolated Fig 1 Isolation symbols UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 3 of 25 NXP Semiconductors UM10874 SSL5231BDB1289 120 V 18 W dimmable buck non
24. stance 6 to 2 at 20 C 0 717 Q maximum DC resistance 4 to 7 at 20 C 0 272 Q maximum Inductance 6 to 2 20 kHz 1 V AC La 350 uH 5 96 Dielectric 2 to 4 1800 V AC 1 second Turns ratio 6 to 2 4 to 7 6 1 2 96 Remark Operating temperature range 40 C to 125 C including temperature range UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 22 of 25 NXP Semiconductors UM10874 13 Abbreviations SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 14 References Table 4 Abbreviations Acronym Description EMI ElectroMagnetic Interference LE Leading Edge LED Light Emitting Diode MELF Metal Electrode Leadless Face MOSFET Metal Oxide Semiconductor Field Effect Transistor OCP OverCurrent Protection OSP Output Short Protection OTP OverTemperature Protection OVP OverVoltage Protection PF Power Factor SMD Surface Mounted Devices SSL Solid State Lighting TE Trailing Edge THD Total Harmonic Distortion UVLO UnderVoltage LockOut UM10874 1 SSL5231BT data sheet Compact high power factor dimmable LED driver IC 2 11618 application note SSL523XT buck boost controller All information provided in this document is subject to legal disclaimers NXP Semiconductors N
25. trolled when reconnecting which can destroy the LED string So turn off the mains before reconnecting the LED load Two circuits set the open load output voltage One circuit sets the open output voltage when the IC does not operate because of a defect The other circuit OVP sets it when the IC is operating normally In all cases the output voltage must never exceed the rated DC voltage of the output capacitor IC not operating The voltage divider consisting of resistors R19 and R20 sets the output voltage from the VCC pin of the IC to the GND pin of the IC and resistor R10 RIO Vo Vous Vcc RTO R10 R20 eee nx 2 5 V As a rule of thumb limit resistor R10 to 2x 190 In this way the voltage is not sufficient to turn on the LEDs n is the number of LEDs in series at the output Resistor R10 has a double function It also supplies the dimmer reset circuit If this circuit is not used resistor R10 must be connected to GND The extra offset of 1 2 V caused by Vpe of transistor Q4 and resistor R6 can be neglected in the calculation The non operating output voltage must not be equal to or exceed the voltage set by the operating mode It is good practice to set the level in non operating mode 5 V to 10 V lower than in operating mode All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 7 of 25 NXP Semico
26. xport 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
27. za UM10874 pA SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver Rev 1 23 April 2015 User manual Document information Info Content Keywords SSL5231BDB1289 SSL5231BT dimmable LED driver buck converter fixture eco THD Abstract This user manual describes the operation of the SSL5231BDB1289 120 V 18 W eco THD dimmable LED driver featuring the SSL5231BT The SSL5231BDB1289 demo board uses a buck topology NXP Semiconductors UM10874 Revision history SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver Rev Date Description v 1 20150423 first issue Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com UM10874 All information provided in this document is subject to legal disclaimers NXP Semiconductors N V 2015 All rights reserved User manual Rev 1 23 April 2015 2 of 25 NXP Semiconductors U M1 0874 SSL5231BDB1289 120 V 18 W dimmable buck non isolated LED driver 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 a
Download Pdf Manuals
Related Search