UM10418 - NXP Semiconductors
Contents
1. 2010 09 07 18 14 08 Zoom i Normal Edge CH4 t 56mA eview 9 250MS s Auto iD woven GUE 2e G Zoomi 12 5 k Sus div Vout em miannan n na J f i f cl feel iilan E SESEO H Pedeenordoentres L lt Lamp a BB T Range M al ind v Statistics 7 Time Range SEE Item Setup Ref Levels T Range2 OFF 0 13div 019aaa878 Fig 11 Capacitive mode protection in RMS state UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 13 of 17 NXP Semiconductors UM10418 UBA2211 demo board for 230 V 12 W 7 Bill Of Materials BOM The components used for the 230 V demo board are given in Table 2 UM10418 Table 2 BOM Number Reference Alias Typical value Quantity 1 Riuse 100Q 1W 1 2 D1 D2 D4 D5 M7 4 3 CBuF C1 2 7 uF 400 V 105 C 10 16 1 4 Crs C5 10 nF 50 V 0805 1 5 Csw Cvpp C6 100 nF 50 V 0805 2 6 CovpT cg 220 pF 500 V 1 7 Cosc C7 220 pF 50 V 0805 1 9 CO Cout1 CouT2 C0 C2 C3 100 nF 400 V CL21 3 10 Clamp C4 2 2 nF 1 kV CBB28 1 11 LELT L1 3 mH LGB 1 12 Liamp L2 3 mH EE13 PC40 1 13 Rose R1 100 KQ 1 0805 1 14 RsENSE R2 1 80 1W 1 1 15 PCB UBA2211 1 UBA2211 8 2 16 IC UBA2211B 1 17 Burner 3U 12 W 2700k 1 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual2. The schematic diagram Figure 5 illustrates how the low voltage supplies are easily obtained by setting the capacitors The UBA2211 has an UnderVoltage LockOut UVLO function for both Vpp and Ves Refer to Ref 1 Data sheet UBA2211 for further details regards supply threshold values The start up current source is enabled when the voltage on pin Vpp is below Vppystop level The high side transistor is switched off when the voltage on pin FS is less than the high side lockout voltage Ves iock UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 7 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 4 SGND OUT cpvor UBA2211T SGND SGND CFS HV SENSE PGND FS DVDT SGND VDD SGND RC SW CvDD 019aaa596 Fig 5 Low voltage supply 6 2 Preheat state UBA2211 features a patented current controlled preheat circuit during start up where the preheat current is independently regulated from the mains voltage The preheat time is set by the value of the external capacitor Csw The IC enters the preheat state when the voltage on pin Vpp is above Vpp start and OTP is not active The capacitor on pin SW Csw is charged by the sweep current Isw integrated in the IC until the decreasing Csw voltage equals Vswiph see Figure 3 The preheat current
3. 10 January 2011 5 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W Viamp 2 5 x fosc nom fosc int fosc nom Vsw HIGH 0 6 x VH RC ey 0 4 time s m preheat time __ gt dd ignition RMS control 001aal992 Fig 3 System timing sequence with warm ignition In non preheated applications a patented glow time control minimizes the electrode damage directly after lamp ignition see Figure 4 UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 6 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W Viamp 2 5 x fosc nom fose int fose nom Vsw HIGH 0 6 x VH RC Vsw Vsw ph A 0 preheat time glow aint ignition RMS control 001aal991 Fig 4 System timing sequence with cold ignition 6 1 Supply voltage The UBA2211 is powered using a start up current source and the DVDT supply The start up current source is integrated in to the IC and the DVDT supply is provided by the Cpvpt capacitor Vpp is used for low side switch driving and logic circuit operation As well as the Vpp supply a floating supply is needed for high side switch driving This is supplied by a bootstrap capacitor connected to the HB output node which is also connected to Cpvpt
4. 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 accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or
5. 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 national 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 limitat
6. 9 65 Pi f w kHz 1 12 55 2 10 45 8 35 260 280 300 320 340 360 HV V DC 1 Pi W 2 f kHz Fig 8 RMS control in real application UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 10 of 17 NXP Semiconductors UM1 041 8 UM10418 UBA2211 demo board for 230 V 12 W The preheat and steady state half bridge lamp currents are both set by the resistor Rsense That results in fixing the ratio between these two currents equal to 1 2 This is a perfect setting for the majority of the burners However for an extended burner covering this ratio can be enlarged by adding a resistor across capacitor Cow Table 1 lists the typical settings The resistor should not be chosen smaller than 10 MQ to prevent malfunctioning of the preheat timer Table 1 Typical ratio setting of lpn IRms Rsw MQ Iph IRms none 1 2 25 1 3 20 1 4 15 1 5 11 1 7 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 11 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 6 5 Overtemperature protection OTP OTP is active in all states When the die temperature reaches the OTP activation threshold Tthyactyotp the oscillator is stopped the LS switch remains in the o
7. Rev 2 10 January 2011 14 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 8 PCB layout Figure 12 shows the PCB layout 019aaa879 Fig 12 PCB layout Motherboard left and daughter board right 9 References 1 Data sheet UBA2211 Half bridge power IC family for CFL lamps UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 15 of 17 NXP Semiconductors UM10418 10 Legal information UBA2211 demo board for 230 V 12 W 10 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 10 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 In no event shall NXP Semiconductors be liable for any indirect incidental punitive special
8. UM10418 UBA2211 demo board for 230 V 12 W CFL Rev 2 10 January 2011 User manual Document information Info Content Keywords UBA2211 demo board low cost high performance CFL Abstract This document is a user manual for the UBA2211 12 W demo board NXP Semiconductors UM10418 Revision history UBA2211 demo board for 230 V 12 W Rev Description v 2 second issue v 1 first issue UM10418 All information provided in this document is subject to legal disclaimers User manual Rev 2 10 January 2011 NXP B V 2011 All rights reserved 2 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 1 Introduction The UBA2211 is a high voltage power IC intended to drive and control electronically ballasted Compact Fluorescent Lamps CFLs with few external components needed It provides all the necessary functions for sufficient preheating ignition and burning operation of the lamp It features a ballast IC with high performance price ratio and is integrated with the related protection functions This UBA2211 user manual is intended for 230 V application of a 12 W demo board 2 Features 2 1 System integration e Integrated half bridge power MOSFET UBA2211A 13 5 Q 0 9 A maximum ignition current UBA2211B 9 Q 1 35 A maximum ignition current UBA2211C 6 6 Q 1 85 A maximum ignition current e Integrated bootstrap diode e Integrated low
9. ion 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 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 prod
10. is monitored using the external resistor Rsense and can be determined by Equation 1 I Vee h ph peak R SENSE The preheat current can be determined by the value of resistor Rsense selected Figure 6 shows the scope waveform in real application UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 8 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W Fig 6 YOKOGAWA 2010 09 07 17 36 30 Normal Edge CH4 34mA Stopped q 1 5 25MS s Auto Display OFF ON Preheat state EE OOA Mein 12 5 M 200ms div vao Jump Cursor 1 O O0div 019aaa875 UM10418 6 3 Ignition state 6 4 The ignition state is entered after the preheat state has finished The capacitor on pin SW Csw is charged by Isw up to 0 6 x VHerc which corresponds to the frequency fosc nom During this frequency sweep the resonance frequency is reached resulting in the ignition of the lamp see Figure 3 The resonance frequency is set by the lamp inductor Liamp and lamp capacitor Ciamp The ignition state ends when the voltage on pin SW Vsw reaches 0 6 x VH RC Steady state Another distinctive feature is the RMS current control function The RMS current control only becomes active when the mains voltage rises above the nominal value The IC dissipation and lamp current a
11. n state and the HS switch remains in the off state This allows the inductor energy to resonate and damp out gradually With the oscillator now stopped the DVDT supply no longer generates a supply current Voltage Vpp gradually decreases and the start up state is entered when Vpp falls below Vpp stop The OTP is reset when the temperature falls below the release threshold Ttrreljotp 2010 09 07 17 5854 Zoom j Normal Edge CH4 34mA review 2 5MS s Auto View SE Zoom 500 000 20us div TARAN VouT po j i 4 i al Eiti t EEEH ESSE Ee hl lt Lamp a EEA oem bese Vcr ten NI eee ug V J j f 1 i f s ush Toga MEASURE T Rangel Mode Indicator v Statistics v Time Range 3 99div Item Setup Ref Levels Enhanced T Range OFF OFF OFF Main i 0 13div 019aaa876 Fig 9 OTP function 6 6 Saturation Current Protection SCP A critical parameter in the design of the lamp inductor is its saturation current Saturation of the lamp inductor is likely to occur in cost effective and miniaturized CFLs The UBA2211 internally monitors the power transistor current When this current exceeds the momentary rating of the internal half bridge power transistors the conduction time is reduced and the frequency is slowly increased by discharging Csw This causes the system to balance at the edge of the current
12. rating of the internal power switches Figure 10 shows SCP in real application using an easily saturated inductor When an IC without this protection function was tested under identical conditions it failed during ignition UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 12 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W oKOGAWA 2010 09 07 19 18 44 Zoom I Normal Edge CH4 0 12 A review MS s Auto D wer l __ Sew E i SEES a H i i i i i i i eo LLamp 1 H Ea wy it i I H i i i l i i i d a VRC ve Display Format Main X m gt a Auto Scrol Trace Treal Z Position OFF ON M in OFF 3 2837 7Miv 019aaa877 Fig 10 Correctly functioning IC with saturated inductor at ignition 6 7 Capacitive Mode Protection CMP UBA2211 detects switch operation through an internal active Zero Voltage Switching ZVS control circuit preventing stress on the MOSFETs When capacitive mode is detected capacitor Csw is discharged causing the frequency to increase The system sets itself to the operating point where capacitive mode switching is minimized CMP is active during the ignition state and in the steady state see Figure 11
13. re limited in this way and ensures that input power is nearly constant while AC mains input increases This results in constant IC dissipation and temperature at a fixed ambient temperature RMS Veense Vocrefyrms Rsense ispr 2 A constant current flows through the power switches and the lamp which is defined by the internal reference voltage Vovrefyrms and the external Rsense resistor see Equation 2 Figure 7 shows the RMS control trend calculated using the calculation tool The lamp operating point is the intersection of curves 1 and 2 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 9 of 17 NXP Semiconductors UM10418 UBA2211 demo board for 230 V 12 W 0 15 llamp A 0 1 0 05 019aaa598 1 2 4 3 0 6x104 8x104 1x105 f Hz V DC V DC nominal IC controlled half bridge current f fmin Vi 230 V RMS takes control at Vj gt 230 V AC 1 2 Half bridge current as a function of frequency operating point at intersection with curve 1 3 Burner current as a function of frequency 4 Maximum frequency set by RMS control Fig 7 RMS control in calculation tool Control behavior of the lamp power is shown by the test results in real application see Figure 8 14 019aaa59
14. s document and the product s described herein have been included in section Legal information NXP B V 2011 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 10 January 2011 Document identifier UM10418
15. s set up to drive a 12 W burner The specifications for this setup are e 230 V AC Input voltage range 220 V to 240 V 50 Hz Input power 12 W at 230 V AC Input current 80 mA at 230 V AC Power factor gt 0 58 Operating frequency 42 kHz 800 ms preheat e Burners Baishi 3U 12 W burner Other burners with 70 V lamp voltage and 150 mA current UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 4 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 5 Application photographs The 230 V AC mains input connection and four connections for the burner are connected as shown in Figure 2 019aab250 Fig 2 Photos of a 12 W CFL with the UBA2211 6 Circuit description The device is an integrated circuit for electronically ballasted compact fluorescent lamps It provides all the necessary functions for sufficient preheat ignition and on state operation of the lamp Several protective measures safeguard the correct operation of the compact fluorescent lamp and controller A typical system timing sequence is shown in Figure 3 with each phase described in greater detail in Section 6 1 to Section 6 7 UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2
16. uct 10 3 Trademarks Notice All referenced brands product names service names and trademarks are the property of their respective owners NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 16 of 17 NXP Semiconductors UM10418 11 Contents UBA2211 demo board for 230 V 12 W 10 1 10 2 10 3 11 Introduction 2 00 e eee 3 Features i vicina teddies saines 3 System integration 000 3 Burner lifetime 2000005 3 Safety iii ted ote aa ohed 3 Ease of US 20 c eee 4 Circuit diagram 0 00 cece eee eee 4 Specifications 0000 e eee eee eee 4 Application photographs 5 Circuit description 0 0s eee eee 5 Supply voltage 000 c eee eee eee 7 Preheat state 00 eee eee 8 Ignition state eee eee 9 Steady state 0 0 0 0 0c cee eee 9 Overtemperature protection OTP 12 Saturation Current Protection SCP 12 Capacitive Mode Protection CMP 13 Bill Of Materials BOM 55 14 PCB layout 2022200c2esecs08 es nee ees 15 References oie te ee eee eee eee 15 Legal information 00ceeeeeeee 16 Definitions 000002 cece ee 16 Disclaimers 00 0200 cece eee eee 16 Trademarks 000000 cee eee eee 16 ContentS 0 20 e cece eee eee eee 17 Please be aware that important notices concerning thi
17. 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 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 UM10418 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
18. voltage supply e Integrated level shifter 2 2 Burner lifetime e Adjustable preheat time and ignition time e Adjustable preheat current independent from mains voltage variation e Minimum glow time control to support cold start e Adjustable lamp power e Lamp power independent from mains voltage variations 2 3 Safety e Soft start function e Accurate 50 duty cycle e UnderVoltage LockOut protection UVLO e Saturation current protection e OverTemperature Protection OTP e Capacitive Mode Protection CMP e System protection for EOL e Lamp removal protection UM10418 All information provided in this document is subject to legal disclaimers NXP B V 2011 All rights reserved User manual Rev 2 10 January 2011 3 of 17 NXP Semiconductors UM1 041 8 UBA2211 demo board for 230 V 12 W 2 4 Ease of use e Adjustable operating frequency for easy fit with various burners 3 Circuit diagram Typical application circuit diagram is shown in Figure 1 LFILT YY e D1 D4 c Aoi 7A OUTI en YY LAMP CDVDT Ciamp SGND O aes SGND le I HV TFS AC input co CBUF PGND UBA2211 Rfuse Ji DVDT LL gt VDD Rosc RC RSENSE ZAK n2 7X ns COUT2 Z CVDD Le E 019aab249 Fig 1 Typical application circuit for Compact Fluorescent Lamp 4 Specifications The UBA2211B demo board i
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