UM10560 - NXP Semiconductors
Contents
1. 8 9 10 Conduction angle ms 1 Leading edge dimmer 2 Trailing edge dimmer Fig 11 Dimming curve LED current as a function of triac conduction angle The SSL2101DB1069 reference board uses the feedback loop on the secondary side to limit the LED output current Resistors R18 and R18a sense the LED current lo A current mirror using the BC847S compares I ep to a reference current Iper Vo R21 R24 and R23 set this current When Ip gt Iper the extra current in the optocoupler limits the on time of the converter The same feedback loop is also used for overvoltage protection OVP OVP begins once Vo is greater than the Zener voltage of D8 which here is 20 V The dimming voltage is detected by sensing the average rectified voltage After R and R8 limit the double bridge rectifier and the input peak current capacitors C2 and C3 determine the triac latch current The mains voltage and current waveforms for a leading edge dimmer for a conduction angle of 8 ms 4r 5 are shown in Figure 12 wai 14 Jum 12 1420 47 aaa 004293 Fig 12 Mains voltage current waveforms UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 11 of 22 NXP Semiconductors U M1 0560 7 3 UM10560 230 V 7 W flyback converter SSL2101 reference board To maintain suffi2. 5 3 Specifications 5 4 Functional description 5 4 1 General sci ranie ma Seed eee eta 5 5 SSL2101DB1069 reference board connections 6 6 Performancedata 7 6 1 EMCIONCY se cc20 oaand EE 7 6 2 Line regulation 0 5 V 7 6 3 Power factor oc cccke ee eek ede eee eae 8 6 4 Load regulation 2 5 per volt for nominal lo 410 mA 8 6 5 Electromagnetic Interference EMI 9 7 Dimming compatibility and characteristic 9 7 1 Dimming compatibility 9 7 2 Dimming characteristic 10 7 3 Power losses 12 7 4 Schematic 14 8 Bill of Materials BOM 15 9 PCB layout IIIA 17 10 Inductor specification 19 11 Legal information 21 11 1 Definitions 0000 0c eee ee 21 11 2 DisclaiMers sss osturan iann Einne ANERE 21 11 3 Trademarks 21 12 AI AA UAE 22 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 salesaddresses nxp com Date of release 20 August 2012 Document identifier UM10
3. No ridge ground I bridge g J primary power ground SSL2101 J primary signal ground secondary ground aaa 004302 Fig 15 PCB layout example aaa 004306 Fig 16 PCB layout top view UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 18 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board aaa 004303 Fig 17 PCB layout bottom view 10 Inductor specification The SSL2101DB1069 reference board is designed for functional isolation An EE13 6 6 coil former is used to allow sufficient headroom when the SSL2101DB1069 reference board is mounted into a GU10 lamp base fitting When testing or doing measurements use a protective shield over the application and never touch the board If transformer reinforced isolation is required the following methods can be adopted e flying secondary leads with triple isolated wire e elevated transformer with triple isolated wire e EE13 12 6 coil former bobbin with triple isolated wire Remark The PCB design has reinforced insulation by having a 1 mm air gap on the PCB between the primary and secondary of the transformer UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User m
4. reference board has tested with a selection of trailing and leading edge dimmers as shown in Table 3 Dimming compatibility Table 3 Selection of dimmers tested Due to different manufacturer dimmer specifications the dimming compatibility may vary With no triac no dimming the LED output current is 410 mA which represents 100 Manufacturer Dimming range Dimming compatibility Leading edge Opus 852390 0 25 to 100 good Opus 852392 0 25 to 100 good Bush 2250U 0 1 to 100 good Bush 2247U 5 to 100 Yo good Bush 6519U 23 Yo to 100 Yo good Gira 118400 0 25 Yo to 100 Yo good EverFlourish PFO700DA 1 2 to 100 Yo good HET 3901 0 25 to 100 0 good Legrand CXM03 0 1 Yo to100 Yo good Varilight 1103034 0 1 to 100 Yo good Chinese dimmer 1 0 8 to 100 good Chinese dimmer 2 0 9 to 100 Yo good All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 9 of 22 NXP Semiconductors U M1 0560 7 2 UM10560 230 V 7 W flyback converter SSL2101 reference board Table 3 Selection of dimmers tested continued Due to different manufacturer dimmer specifications the dimming compatibility may vary With no triac no dimming the LED output current is 410 mA which represents 100 Manufacturer Dimming range Dimming compatibility Legrand V051 0 1 to100 Yo good Chinese dimmer 3 6 5 to 100 good Chinese dimmer 4
5. 6 to 100 Yo good Trailing edge Drespatronic 0817 11 to 100 Yo good Drespatronic 0815 5 Yo to 100 Yo flicker Berker 286170 9 to 100 good Berker 2874 10 Yo to 100 Yo good Bush 6591U 0 25 to 100 triac on off Bush 6513U 23 to 100 good Jung 225TDE 9 to 100 Yo good Jung 243EX 10 Yo to 100 Yo good Gira 030700 10 Yo to 100 Yo good PEH433HAB 11 to 100 good Niko 23 to 100 good Legrand CXM02 5 Yo to 100 Yo triac on off at 100 Yo Legrand 78402 7 to 100 Yo good Varilight 1106037 3 Yo to 100 Yo good CLIPSAL Universal dimmer 7 to 100 Yo good Dimming characteristic At 230 V input mains the voltage divider sets the voltage on the BRIGHTNESS and PWMLIMIT pins and therefore the converter frequency and duty cycle This divider consists of resistors R7 R8 and R9 together with capacitor C9 for filtering During dimming the voltage on the BRIGHTNESS and PWMLIMIT pins decreases This decrease reduces the converter frequency and duty cycle respectively The dimming curve of lo against the triac conduction angle for leading and trailing edge dimmers is shown in Figure 11 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 10 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board aaa 004292 500 mA 400 300 2 200 1 100
6. 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
7. for driving LED applications NXP Semiconductors SL2101 S016 U2 optocoupler 300 CTR Through pin Fairchild FOD817C U3 NPN NPN transistor SOT363 NXP Semiconductors BC847BS UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 16 of 22 NXP Semiconductors U M1 0560 9 PCB layout 230 V 7 W flyback converter SSL2101 reference board The board has a star connection for the different return grounds paths back to the ground plane of SSL2101 therefore avoiding ground loops A PCB layout example is shown in Figure 15 and the actual PCB layout is shown in Figure 16 and Figure 17 Important aspects of layout UM10560 Connection of power and signal ground must be at the ground plane of SSL2101 all the GND pins and with sufficient vias The primary current loop area is minimized and consists of C2 L2 C3 bus line to the RC pin of the transformer pin 6 of the transformer to the BRIGHTNESS pin of SSL2101 source resistor R12 R22 to ground plane at IC power ground plane return to C2 L2 and C3 The DRAIN pin of SSL2101 must be very near to pin 6 of the transformer The pin also requires a separate power ground return from source resistor R12 and R22 to C2 and C3 Snubber diodes D2 and D3 must be very close in parallel to pins 8 and 6 of the transformer also resulting in a minimum current loop The second
8. kQ BZV55 C20 750 ko R14 100 p gt I 4 4 PMLL4148L U3 c7 D6 BC847BS ie YA 10 uF BAV103 25V D7 af 10 KQ T A BZV55 C27 i _ f R37 100 I l 4700 RGND aaa 004300 Fig 14 Schematic diagram 230 V 7 W flyback converter using the SSL2101 pamasa syu Ily ZLOZ WA dXN Zz 0 HL SIOJONPUOSIWIS dXN onewey9sg p Z pieog 99uUd19jJ91 LOLZ1SS 1 HAUOI yORGAIE M Z A OFZ O9SOLINN NXP Semiconductors UM10560 230 V 7 W flyback converter SSL2101 reference board 8 Bill of Materials BOM Table 4 Bill of Materials Part Reference Description Manufacturer part number BD1 bridge rectifier 600 V 0 8 A Comchip Tech B6S G C1 0 010 uF 305 V AC 630 V DC 20 Yo X2 class EPCOS B32921C3103M radial long lead C2 0 47 uF 450 V DC 10 Yo epoxy coated ceramic Murata RDED72W474K5B1 radial C3 0 47 uF 450 V DC 10 Yo epoxy coated ceramic Murata RDED72W474K5B1 radial C6 4 7 uF 50 V 10 X5R ceramic 1206 Taiyo Yuden UMK316BJ475KL T C7 10 uF 25 V 10 X7R ceramic 1206 Taiyo Yuden TMK316B7106KL TD C8 330 pF 25 V 5 COG NPO 0603 AVX 06033A331JAT2A c9 330 pF 25 V 5 COG NPO 0603 AVX 06033A331JAT2A C10 1000 uF 25 V 20 electrolytic radial 10x16 Panasonic EEUHD1E102 C10a 1000 uF 25 V 20 electrolytic radial 10x16 Panasonic EEUHD1E102 C11 2 2 nF 2 kV 10 radial Murata DEBB33D222KA2B D1 f
9. local requirements and labor laws to work with non insulated mains voltages and high voltage circuits This product shall never be operated unattended UM10560 This document describes the operation of a 230 V 7 W dimmable LED driver featuring the SSL2101 The SSL2101DB1069 reference board has a GU10 LED lamp compatible form factor The flyback converter topology provides a simple and efficient solution for mains dimmable LED recessed light applications The total input power VA to the board is 230 V 52 mA 11 9 W The SSL2101DB1069 reference board is designed to drive a 5 LED load delivering an output power of 6 7 W with 16 3 V 410 mA The Power Factor PF is 0 75 which gives an actual input power of 0 75 x 11 9 W 8 9 W and the resulting efficiency is 75 The SSL2101DB1069 reference board complies with EMI and safety regulations The SSL2101DB1069 reference board is designed so the components allow enough headroom for the board to fit into a GU10 lamp base The board dimensions are shown in Figure 1 The assembled top board view is shown in Figure 2 and the bottom board view in Figure 3 I 12 4mm gt 19 5 mm gt 18 mm 30 mm aaa 004253 Fig 1 SSL2101DB1069 Reference board dimensions All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 3 of 22 NXP Semiconductors U M1 0
10. ratio 6 to 8 2 to 5 Turns ratio 6 to 8 9 to10 Dielectric rating primary to secondary 1 to 10 Value 2 9 Q 10 Yo 78 mo 10 Yo 520 mQ 10 Yo 1 67 mH 10 Yo 13 uH 10 Yo 400 mA 1 1 017 4 1 7 438 1 1 7 438 1 1 7 1 41 4 kV applied for 1 s Comment short circuit 1 to 2 and short 4 to 5 100 mV 10 kHz short circuit to 2 to 4 to 5 and short circuit 9 to 10 100 mV 10 kHz Short 4 to 5 and 8 to 9 UM10560 All information provided in this document is subject to legal disclaimers Rev 1 20 August 2012 NXP B V 2012 All rights reserved 20 of 22 User manual NXP Semiconductors UM10560 11 Legal information 230 V 7 W flyback converter SSL2101 reference board 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 cons
11. the ISENSE pin of the SSL2101 When R15 and R16 10 KO the voltage at ISENSE is 100 mV with respect to ground This voltage is the internal threshold level to switch on the WBLEED In this case the weak bleeder is switched on when the converter current is less than 20 mA Power losses For an input mains voltage of 230 V the measured powers are Pin 8 9 W and Po 6 7 W The power loss is 2 2 W which is distributed over the following elements e input resistors R and R8 300 mW e SBLEED resistor R3 when the internal SBLEED is operational 50 mW e WBLEED resistors R4 and R5 and extra current through Q1 and R6 when the internal WBLEED is operational 600 mW e core and copper losses in the transformer T1 400 mW e snubber circuit D2 and D3 100 mW e MOSFET conduction and switching losses are 300 mW e secondary diode D4 450 mW The hotspot of the PCB is at resistor R6 which is an extra bleeder current to improve dimming compatibility The value here is a compromise between efficiency and dimming compatibility All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 12 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board The measured temperature of R6 is 75 C at 25 C ambient Reduction in temperature is possible by replacing R6 with a series or parallel connection of two resistors h
12. 240 260 Vin V Fig 7 Output current as a function of AC mains input voltage UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 7 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 6 3 Power factor aaa 004260 PF 0 9 0 8 0 7 0 6 0 5 200 220 240 260 Vin V Fig 8 Power factor as a function of AC mains input voltage 6 4 Load regulation 2 5 Yo per volt for nominal Ip 410 mA 600 aaa 004262 mA 500 400 300 200 100 12 14 16 18 20 22 Vo V Fig 9 Output current as a function of output voltage UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 8 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 6 5 Electromagnetic Interference EMl aaa 004263 Fig 10 EMI performance 7 Dimming compatibility and characteristic UM10560 7 1 Dimming compatibility is defined as having smooth dimming without any flashing or flickering effects occurring across the complete dimming range The SSL2101DB1069
13. 560
14. 560 230 V 7 W flyback converter SSL2101 reference board aaa 004256 Fig 2 _SSL2101DB1069 Reference board top view aaa 004257 Fig 3 SSL2101DB1069 Reference board bottom view UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 4 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 2 Safety Warning This board is connected to the mains voltage Avoid touching the board while it is connected to the mains voltage An isolated housing is obligatory when used in uncontrolled non laboratory environments Galvanic isolation of the mains phase using a variable transformer is always recommended 019aab173 019aab174 a isolated b non isolated Fig 4 Variable transformer isolation symbols 3 Specifications Table 1 Specifications for the SSL2101DB1069 reference board Symbol Parameter Value Vimains AC mains supply voltage 230 V Vo output voltage 16 3 V lo output current 410 mA Alp AVo output voltage rejection 22 5 mA V 2 5 at nominal lo 410 mA n efficiency 75 Yo PF Power Factor 0 75 fsw switching frequency 55 kHz 4 Functional description 4 1 General UM10560 The 230 V 7 W flyback converter SSL2101DB1069 reference board uses the SSL2101 control IC to drive an output load of 5 LEDs The SSL2101 is a Switch Mo
15. UM10560 230 V 7 W flyback converter SSL2101 reference board Rev 1 20 August 2012 User manual Document information Info Content Keywords SSL2101 dimmable LED driver flyback converter GU10 Abstract This document describes the operation of a 230 V 7 W dimmable LED driver featuring SSL2101 and using a flyback topology The SSL2101DB1069 reference board has a form factor that is compatible with the base of a GU10 LED lamp fitting used in Solid State Lighting SSL applications NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board Revision history Rev Date Description v 1 20120820 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 UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 2 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 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
16. anual Rev 1 20 August 2012 19 of 22 UM10560 230 V 7 W flyback converter SSL2101 reference board NXP Semiconductors customer terminal RoHS lead Pb free Sn 96 Ag 4 Yo yes yes 0 10 0 13 A part must insert fully to 2 54 3 30 dot indent locates term 1 surface A in recommended grid aa 0 20 SA 9K 0 6 max 0 58 max 0 51 15 24 E 7 14 73 100 a91 x 9 o 2 2 0 58 max I 8 o 14 73 N pi 7 o o 4 c y 2 ld 60 295 Mm i 6 D PRI 7 275 375 V Sle 100 kHz 8 9 SEC 20 V 20 mA 10 term no s for ref only 1 2 SEC 19 V 500 mA 5 4 customer to tie terminals 1 2 and 4 5 internally on PCB Fig 18 Inductor Specification lot code and date code 0 040 9x 0 335 1 02 aa 8 51 m 0 98 6x T N con 2 51 4 gt fee Aes Sai me earns one cae recommended p c pattern component side aaa 004307 Table 5 Electrical specification All values are specified at 25 C unless otherwise specified All values without tolerance are typical values Functional insulation for a primary circuit at a working voltage of 400 V DC Parameter DCR 6 to 8 DCR 1 to 5 DCR 9 to 10 Primary Inductance 6 8 Leakage Inductance 6 8 Primary saturation current Turns ratio 6 to 7 7 to 8 Turns ratio 6 to 8 1 to 4 Turns
17. ary current loop area is minimized and consists of pins 1 and 2 of transformer to diode D4 diode D4 to capacitors C10 and C10a ground of capacitors C10 and C10a to secondary ground plane at pins 4 and 5 of the transformer Place the oscillator components R10 R11 and C8 close between the oscillator pins RC2 and RC and the GND pins 4 5 of the IC Separate return path from SSL2101 ground plane using the R17 resistor to ground of the bridge rectifier Separate ground return path of the auxiliary winding pin 10 of T1 to SSL2101 ground plane and minimize this current loop Separate ground return of R7 and C7 to SSL2101 ground plane Isense Components C9 and R16 have separate ground return to SSL2101 ground plane Place optocoupler U2 and isolation capacitor C11 close to each side of the transformer The optocoupler signal and ground are supplied symmetrically to pins 9 4 and 5 respectively If possible use a separate ground return path from the optocoupler ground to the GND pins of the SSL2101 The Y2 capacitor C11 must have a separate ground return path to power ground All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 17 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board L2 D4 i aE al c2 c3 C10 Pt Lo 230 V c1 50 Hz X2 class
18. ast diodes 400 V 1 A DO214 AC Diodes Inc US1G 13 F D2 fast diodes 400 V 1 A D0214 AC Diodes Inc ES1G 13 F D3 Zener 160 V 3 W SMD On Semi 1SMB5954BT3 D4 Schottky 150 V 3 A SMB STM STPS3150U D5 switching diode SOD80C NXP Semiconductors PMLL4148L D6 small signal diode SOD80C NXP Semiconductors BAV103 D7 Zener diode 27 V 500 mW SOD80C NXP Semiconductors BZV55 C27 D8 Zener diode 20 V 500 mW SOD80C NXP Semiconductors BZV55 C20 Ji wire connection 0 6 mm J2 wire connection 0 6 mm J3 wire connection 0 6 mm J4 wire connection 0 6 mm J5 receptacle 2 54 mm single 6 way SAMTEC SSW 106 02 G S RA J6 MKDSN 2 5 2 5 08 PHOENIK CONTACT 1888687 L1 1 mH radial Murata 22R105C 1 mH radial alternative Wirth Elektronik 744732102 L2 3 3 mH radial NXP Semiconductors SSL2101 3 3 mH radial alternative W rth Elektronik 7447724332 Q1 PNP 400 V 200 MA TO92 3 Diodes Zetex ZTX558 R1 51 9 0 6 W 1 Yo axial Vishay MRS25000C5109FCT00 R2 51 Q 0 6 W 1 Yo axial Vishay MRS25000C5109FCT00 R3 2 7 KQ 0 25 W 5 axial Panasonic ECG ERD S2TJ272V R4 4 7 KO 0 1 W 5 Yo 0603 Panasonic ECG ERJ 3GEYJ472V R5 220 kQ 0 25 W 5 Yo axial Panasonic ECG ERD S2TJ224V R6 27 KQ 2 W 5 Yo axial Vishay PRO2000202702FR500 UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 15 of 22 NXP Semiconductors UM10560 Tab
19. aving the same total equivalent resistance value The measured temperature of the transformer is 55 C at 25 C ambient Finally the power loss as a function of triac conduction angle for a leading edge dimmer over the complete dimming range is shown in Figure 13 aaa 004295 Pioss w 0 2 4 6 8 10 conduction angle ms Fig 13 Power losses as a function of conduction angle UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 13 of 22 0950 4W5N jenuew 19Ssp zLoOZ ysnBny oz Ady SJOWUIE OSIP 269 0 JOaIqNs si JUBWNDOP SI UI PEPIAOI UONBUJOJU y BD1 3 3 mH B6S G US1G 13 F L1 R1 Loi __ 1mH 510 a c2 c3 D3 zi 230 V 10 nF ps ya ya n 1SMB5954BT3 urth 750312568 50 Hz 630V RGND 14 R2 X2 class D2 N oc _ ES1G 13 F 510 C10 C10a aad 5 LEDS 1000 uF 1000 uF 410 mA R3 T ey ji 25V 680 mO 4 e 0 _ R18a 2 7 kO Q1 680 mQ ZTX558 R6 4 27 KQ R4 R5 4 7 kQ 220 KQ L L Ris a l VCC m R22 aa 10kQ R20 R21 Sar 20 kQ 10 kQ R9 I 750 KQ L D8 R24 L 9 10
20. cient triac current over the dimming range the SSL2101 has two internal current sinks called bleeders The strong bleeder SBLEED resets the zero crossing of the dimmer and also helps triac latching The weak bleeder WBLEED is used to maintain sufficient hold current after the triac latches and throughout the complete dimming range SBLEED is switched on when the maximum voltage on the WBLEED and SBLEED pins is below 52 V WBLEED is switched on when the voltage on the ISENSE pin is greater than 100 mV that is between 0 mV and 100 mV The ISENSE voltage is derived from the voltage drop across R17 and thus the converter current return to the double bridge rectifier In this application an optional circuit is included for extra hold current The hold current flows through Q1 and R6 when WBLEED is on The resistor R6 determines the extra current required for good dimming compatibility but there is a compromise with efficiency The weak bleeder is switched off when the ISENSE voltage exceeds 250 mV The weak bleeder is also switched off when the strong bleeder is switched on Example The weak bleeder is switched on when the current in the converter return path is less than 20 mA This condition could be a minimum requirement for the hold current of the triac dimmer The 20 mA current through R17 10 Q results in a voltage of 250 mV at RGND node with respect to ground R15 R16 and C9 attenuate and filter this voltage and supply it to
21. de Power Supply SMPS control IC with an integrated MOSFET Detailed information about the SSL2101 operation is contained in the SSL2101 SMPS IC for dimmable LED lighting data sheet The converter operates in Discontinuous Conduction Mode DCM The SSL2101DB1069 reference board is triac dimmable and can be used in combination with most leading and trailing edge dimmers During dimming the rectified mains voltage is averaged and attenuated and supplied to both the PWMLIMIT and BRIGHTNESS pins of the SSL2101 This voltage reduces the converter duty cycle and frequency and as a result the LED output current All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 5 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board Dimming compatibility performance has been tested with a selection of 30 leading trailing edge dimmers as shown in Section 7 5 SSL2101DB1069 reference board connections The GU10 LED driver SSL2101DB1069 reference board takes a 230 V 50 Hz mains supply and supports a 5 LED load The board connection is shown in Figure 5 Remark Make all connections with the input power is switched off e Connect the 5 LED load as output load together with power meter at both inputs and outputs Connect Vin 230 V 50 Hz using an isolating transformer to the input connection points of th
22. e buck converter Alternatively use an AC power supply with limited output current capability for example 200 mA e Increase Vin to 230 V and measure the different parameters as shown in Table 2 e When testing dimmer compatibility connect a leading or trailing edge dimmer between Vin and the buck converter input connection points Remark Use protective a shield over application and never touch the board when measuring or testing Table2 Input output parameters Vin V l mA PF Pin W Vo V lo mA Po W n 230 52 0 75 8 9 16 3 410 6 7 0 75 aaa 004255 Fig 5 Connection to the SSL2101DB1069 reference board UM10560 All information provided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 6 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 6 Performance data The performance was measured with 5 LEDs connected as output load The performance data is shown in Figure 6 to Figure 10 6 1 Efficiency 1 00 aaa 004258 n 0 90 0 80 0 70 0 60 0 50 200 210 220 230 240 250 260 Vin V Fig 6 Efficiency as a function of AC mains input voltage 6 2 Line regulation 0 5 V 500 aaa 004259 lo mA 460 420 380 340 300 200 220
23. equences 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 prod
24. le 4 230 V 7 W flyback converter SSL2101 reference board Bill of Materials continued Part Reference R7 Description 10 kQ 0 1 W 5 0603 Manufacturer part number Panasonic ECG ERJ 3GEYJ103V R8 750 kQ 0 25 W 1 Yo 1206 WELWYN WCR1206 750KFI R9 750 kO 0 25 W 1 Yo 1206 WELWYN WCR1206 750KFI R10 15 KQ 0 1 W 5 Yo 0603 Panasonic ECG ERUSGEYJ153V R11 100 kQ 0 1 W 5 0603 Panasonic ECG ERJ 3GEYJ104V R12 2 2 Q 0 25 W 1 Yo 1206 Vishay CRCW12062R20JNEAIF R13 33 kQ 0 1 W 5 Yo 0603 Panasonic ECG ERJ 3GEYJ333V R14 10 kQ 0 1 W 5 0603 Panasonic ECG ERJ 3GEYJ100V R15 10 kQ 0 1 W 1 Yo 0603 Panasonic ECG ERJ 3EKF1002V R16 20 KQ 0 1 W 1 Yo 0603 Panasonic ECG ERJ 3EKF1002V R17 10 KQ 0 5 W 5 Yo 1210 Panasonic ECG ERJ 14YJ100U R18 680 kQ 0 5 W 1 Yo 1206 YAGEO RL1206FR 7WOR68LI R18a 680 kQ 0 5 W 1 Yo 1206 YAGEO RL1206FR 7WOR68LI R19 10 KQ 0 25 W 1 Yo 0603 Vishay CRCW060310KOFKEAHP R20 20 kQ 0 1 W 1 Yo 0603 Vishay CRCWO060320KOFKEA R21 10 KQ 0 25 W 1 0603 Vishay CRCW060310KOFKEAHP R22 2 2 Q 0 25 W 1 Yo 1206 Vishay CRCW12062R20JNEAIF R23 330 9 0 25 W 1 Yo 0603 Vishay CRCW0603330RFKEAHP R24 10 KQ 0 25 W 1 0603 Vishay CRCW060310KOFKEAHP R37 470 9 0 1 W 5 0603 Bourns CR0603 JW 471GLF R38 75 KQ 0 1 W 1 Yo 0603 Multicomp MC 0 063 W 0603 1 75 K T1 Lori 1 67 MH Npri sec 7 438 Nprijaux 5 789 W rth Elektronik 750312568 U1 SMPS controller IC
25. 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 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 11 3 Trademarks Notice All referenced brands product names service names and trademarks are the property of their respective owners NXP B V 2012 All rights reserved User manual Rev 1 20 August 2012 21 of 22 NXP Semiconductors U M1 0560 230 V 7 W flyback converter SSL2101 reference board 12 Contents 1 Introduction 3 2 Safety Warning
26. uct 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 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 UM10560 All information provided in this document is subject to legal disclaimers 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
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