SY59101AFCP

Applications Note: SY59101A Dimmable, high Efficiency Linear Driver With Integrated 350V MOSFET General Description Features The SY59101A is a linear AC/DC driver with integrated 350V MOSFET for LED lighting. It’s compatible with Leading/Trailing edge dimmer. The patented technique results in high efficiency and power factor. • • • • • • • • OO KO O Ordering Information Compatible with Leading/Trailing Edge Dimmer Integrated 350V MOSFET Power Factor >0.7 Good regulation(0.7). D1 OO KO O The output current IOUT can be represented by V IOUT = REF RS Where VREF is the internal reference voltage; RS is the current sense resistor. To have a better efficiency, special design is integrated in SY59101A. N F1 BLD DB1 PVIN SY59101A L GND VS Fig.5 The patented technology of compensation Traditional SY59101A VBUS VBUS VLED VLED iin iin Fig.6 Shape of current compensation With traditional LDO, when VBUS>VLED, IIN is constant. The loss power is high when VBUS is higher than VLED. The SY59101A adopt the compensation from BUS voltage. When VBUS is close to VLED, increase input current, and when around the peak of VBUS, decrease input current. The total output current is constant by closed loop. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 4 AN_SY59101A TRIAC Dimming 1: F1 selection: 4.7ohm to 22ohm is recommended for F1,usually,the smaller F1 is, the better line regulation is VBUS Leading edge VLED 2: D1 selection: Fig.7 BUS voltage with TRIAC When cooperate with dimmer, IC will provide enough latching current and holding to keep dimmer working normally. 3: R1 selection: R1 is used for current limit on IBLD, usually, 200ohm is recommended. or W Thermal Fold-back Function 4: R2 selection: SY59101A have thermal fold-back function. R2 is used to sense output current. Inter Ref is 100mV, R2=100mV/Io. dF Design Guide: R1 200ohm 1206 EC1 33µF/160V R3 NC TRIAC BD1 TB120S SY59101A/SO8E PVIN HV IBLD VS NC GND NC NC lP R2 1.6ohm 0805 NC Sil erg yC orp .C on fi Fig.8 Schematic de nti a L F1 10ohm/0.5W rep are D1 ES1J N OO KO O Super-fast recovery diode like ES1J is suggested for D1, it will effectively prevent negative current flow from PVIN. AN_SY59101A Rev.0.9 © 2020 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 5 AN_SY59101A rep are dF or W OO KO O SO8E Package Outline & PCB layout Side view erg yC orp .C on fi de nti a lP Top view Sil Front view Recommended PCB Layout (Reference Only) Notes: All dimension in millimeter and exclude mold flash & metal burr. AN_SY59101A Rev.0.9 © 2020 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 6 AN_SY59101A Taping & Reel Specification or W OO KO O 1. Taping orientation SO8E Feeding direction lP rep are dF 2. Carrier Tape & Reel specification for packages Package types yC (mm) Reel size Trailer * Leader * Qty per reel pitch(mm) (Inch) length(mm) length (mm) (pcs) 12 8 13" 400 400 2500 Sil erg SO8E Others: NA Pocket orp Tape width .C on fi de nti a Reel Size AN_ SY59101ARev.0.9 © 2020 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 7 AN_SY59101A Revision History The revision history provided is for informational purpose only and is believed to be accurate, however, not warranted. Please make sure that you have the latest revision. Date Revision Change Revision 0.9 Initial Release Sil erg yC orp .C on fi de nti a lP rep are dF or W OO KO O December 4, 2020 AN_ SY59101ARev.0.9 © 2020 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 8 AN_SY59101A IMPORTANT NOTICE 1. Right to make changes. Silergy and its subsidiaries (hereafter Silergy) reserve the right to change any information published in this document, including but not limited to circuitry, specification and/or product design, manufacturing or descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products are sold subject to Silergy’s standard terms and conditions of sale. or W OO KO O 2. Applications. Application examples that are described herein for any of these products are for illustrative purposes only. Silergy makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Buyers are responsible for the design and operation of their applications and products using Silergy products. Silergy or its subsidiaries assume no liability for any application assistance or designs of customer products. It is customer’s sole responsibility to determine whether the Silergy product is suitable and fit for the customer’s applications and products planned. To minimize the risks associated with customer’s products and applications, customer should provide adequate design and operating safeguards. Customer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm and take appropriate remedial actions. Silergy assumes no liability related to any default, damage, costs or problem in the customer’s applications or products, or the application or use by customer’s third-party buyers. Customer will fully indemnify Silergy, its subsidiaries, and their representatives against any damages arising out of the use of any Silergy components in safetycritical applications. It is also buyers’ sole responsibility to warrant and guarantee that any intellectual property rights of a third party are not infringed upon when integrating Silergy products into any application. Silergy assumes no responsibility for any said applications or for any use of any circuitry other than circuitry entirely embodied in a Silergy product. lP rep are dF 3. Limited warranty and liability. Information furnished by Silergy in this document is believed to be accurate and reliable. However, Silergy makes no representation or warranty, 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 Silergy be liable for any indirect, incidental, punitive, special or consequential damages, including but not limited to 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 or negligence, warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, Silergy’ aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Standard Terms and Conditions of Sale of Silergy. on fi de nti a 4. Suitability for use. Customer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements concerning its products, and any use of Silergy components in its applications, notwithstanding any applications-related information or support that may be provided by Silergy. Silergy 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 Silergy product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Silergy assumes no liability for inclusion and/or use of Silergy products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. orp .C 5. Terms and conditions of commercial sale. Silergy products are sold subject to the standard terms and conditions of commercial sale, as published at http://www.silergy.com/stdterms, unless otherwise agreed in a valid written individual agreement specifically agreed to in writing by an authorized officer of Silergy. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Silergy hereby expressly objects to and denies the application of any customer’s general terms and conditions with regard to the purchase of Silergy products by the customer. erg yC 6. No offer to sell or license. Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Silergy makes no representation or warranty that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right. Information published by Silergy regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from Silergy under the patents or other intellectual property of Silergy. Sil For more information, please visit: www.silergy.com © 2020 Silergy Corp. AN_ SY59101ARev.0.9 © 2020 Silergy Corp. Powered by TCPDF (www.tcpdf.org) All Rights Reserved. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 9