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UM10525

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2012. All rights reserved.

User manual

Rev. 1 — 19 April 2012 

20 of 21

NXP Semiconductors

UM10525

120 V 20 W CFL demo board using the UBA2212 

10. Legal information

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. 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. 

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.

10.3 Trademarks

Notice: All referenced brands, product names, service names and trademarks 
are the property of their respective owners.

Содержание UM10525

Страница 1: ...emo board using the UBA2212 Rev 1 19 April 2012 User manual Document information Info Content Keywords UBA2212 demo board CFL boost 120 V AC 20 W Abstract This document is a user manual for the UBA221...

Страница 2: ...er manual Rev 1 19 April 2012 2 of 21 Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com NXP Semiconductor...

Страница 3: ...CFL warm up and more light after ignition Run up time is one of the key requirements for CFL Normally it is measured from the time lamp was powered until 80 of light output is reached Run up time is l...

Страница 4: ...e using a variable transformer The following symbols identify isolated and non isolated devices WARNING Lethal voltage and fire ignition hazard The non insulated high voltages that are present when op...

Страница 5: ...for 120 V AC 60 Hz Lamp voltage Vlamp steady 100 V measured at 120 V AC mains GE T3 Spiral 20 W burner used Table 2 on page 10 Lamp current Ilamp 170 mA Operating frequency fosc 45 kHz Power Factor 0...

Страница 6: ...tank translating power into the burner The L2 secondary windings N2 and N3 preheat the burner filaments If preheat is not required in the application leave off secondary windings and short the filamen...

Страница 7: ...CCB sweeping cycles The transition from the boost state to the burn state is triggered when the boost timer indicates the end of the boost state During the boost to burn transition the boost transiti...

Страница 8: ...at the boost effect is visible to the human eye when the light is powered up The same situation is not visible when the same lamp is used without boost feature Figure 4 shows the states after power on...

Страница 9: ...UBA2212 1 Ilamp signal 2 SW signal timing for preheat 3 CB signal timing for boost and transition 4 Half bridge voltage Fig 6 Time sequence for a boost lamp with a zoom function applied to the preheat...

Страница 10: ...r point is reached The lamp then enters the burn transition When a lamp burns for a long time is switched off and then after a short delay switched on again The end of boost is reached after only 6 s...

Страница 11: ...acitive mode is detected the internal current source discharges the internal capacitor Consequently the SW voltage is lower and the RMS circuit controlled boost frequency increases until the system is...

Страница 12: ...es the lamp current to be independent of the mains or lamp voltage The lamp current calculation is shown in Equation 2 2 Therefore the boost burn ratio can be found as shown in Equation 3 3 5 3 Overte...

Страница 13: ...turation of the lamp inductor is likely to occur in cost effective and miniaturized CFLs The UBA2212 family internally monitors the power transistor current When the current exceeds the momentary rati...

Страница 14: ...evel The frequency increases very slowly until hard switching is no longer detected Once CMP is no longer active the system increases to the preheating frequency as defined preheat current In boost an...

Страница 15: ...ided in this document is subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 19 April 2012 15 of 21 NXP Semiconductors UM10525 120 V 20 W CFL demo board using the UBA2212 F...

Страница 16: ...12 SENSE PGND 4 11 SGND DVDT 5 10 CSI VDD 6 9 CB RC 7 8 SW CFL AC input L_N L_L UBA2212 Table 3 Bill of materials Number Reference Typical value Quantity 1 Rfuse 10 1 W no value for fuse resistor 1 2...

Страница 17: ...able 4 with their LC tank start up to burn scope picture and related electrical parameters 16 L2 PC40 EE16 1 5 mH 1 A N 180 6 6 diameter 0 23 mm 1 18 U1 UBA2212CT SO14 1 19 Burner burner T3 Spiral 20...

Страница 18: ...emo board using the UBA2212 Fig 15 12 W Baishi CFL Table 5 Electrical parameters 12 W boost lamp UBA2212BT N1B Boost ratio 1 56 CBUF 22 F 250 V L2 1 75 mH 2 C5 res 7 4 nF 1 kV C6 and C7 100 nF 100 V C...

Страница 19: ...s subject to legal disclaimers NXP B V 2012 All rights reserved User manual Rev 1 19 April 2012 19 of 21 NXP Semiconductors UM10525 120 V 20 W CFL demo board using the UBA2212 9 References 1 UBA2212 H...

Страница 20: ...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...

Страница 21: ...uded in section Legal information 11 Contents 1 Introduction 3 2 Safety Warning 4 3 Specifications 5 4 Schematic and functional description 6 4 1 Functional description 6 4 2 Timing 6 5 Measurement re...

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