CDB150x-01 CS1501 90W, High-efficiency PFC Demonstration Board Features General Description Variable On Time, Variable Frequency, DCM PFC Controller The CDB150x-01 board demonstrates the performance of the CS1501 digital PFC controller with a 90 watt output at a link voltage of 400 volts. Line Voltage Range: 90 to 265 VAC RMS Output voltage: 400 V Rated Pout: 90 W Efficiency: 97% @ 90 W, 230 VAC No-load Power Dissipation: <0.3 W Low Component Count Supports Cirrus Logic Product CS1501 ORDERING INFORMATION CDB150x-01 PFC Demonstration Board - Supports CS1501 Regulated DC Output AC Line Input Actual Size: 254mm x 44mm www.cirrus.com Copyright Cirrus Logic, Inc. 2011 (All Rights Reserved) MAR ‘11 DS927DB3 CDB150x-01 IMPORTANT SAFETY INSTRUCTIONS Read and follow all safety instructions prior to using this demonstration board. This Engineering Evaluation Unit or Demonstration Board must only be used for assessing IC performance in a laboratory setting. This product is not intended for any other use or incorporation into products for sale. This product must only be used by qualified technicians or professionals who are trained in the safety procedures associated with the use of demonstration boards. Risk of Electric Shock • The direct connection to the AC power line and the open and unprotected boards present a serious risk of electric shock and can cause serious injury or death. Extreme caution needs to be exercised while handling this board. • Avoid contact with the exposed conductor or terminals of components on the board. High voltage is present on exposed conductor and it may be present on terminals of any components directly or indirectly connected to the AC line. • Dangerous voltages and/or currents may be internally generated and accessible at various points across the board. • Charged capacitors store high voltage, even after the circuit has been disconnected from the AC line. • Make sure that the power source is off before wiring any connection. Make sure that all connectors are well connected before the power source is on. • Follow all laboratory safety procedures established by your employer and relevant safety regulations and guidelines, such as the ones listed under, OSHA General Industry Regulations - Subpart S and NFPA 70E. Suitable eye protection must be worn when working with or around demonstration boards. Always comply with your employer’s policies regarding the use of personal protective equipment. All components, heat sinks or metallic parts may be extremely hot to touch when electrically active. Heatsinking is required for Q1. The end product should use tar pitch or an equivalent compound for this purpose. For lab evaluation purposes, a fan is recommended to provide adequate cooling. Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you go to www.cirrus.com IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. 2 DS927DB3 CDB150x-01 1. INTRODUCTION The CS1501 is a high-performance Variable Frequency Discontinuous Conduction Mode (VF-DCM), active Power Factor Correction (PFC) controller, optimized to deliver the lowest system cost in switched mode power supply (SMPS) applications. The CS1501 uses a digital control algorithm that is optimized for high efficiency and near-unity power factor over a wide input voltage range (90-265 VAC). Using an adaptive digital control algorithm, both the ON time and the switching frequency are varied on a cycle-by-cycle basis over the entire AC line to achieve close-to-unity power factor. The feedback loop is closed through an integrated digital control system within the IC. The variation in switching frequency also provides a spread-frequency spectrum, thus minimizing the conducted EMI filtering requirements. Burst mode control minimizes the light-load/standby losses. Protection features such as overvoltage, overcurrent, overpower, open circuit, overtemperature, and brownout help protect the device during abnormal transient conditions. Details of these features are provided in the CS1501 data sheets. The CDB150x-01 board demonstrates the performance of the CS1501 with input voltage range of 90-265 VAC, typically seen in universal input applications. This board has been designed for 400V Vlink, 90 Watts, full load. Extreme caution needs to be exercised while handling this board. This board is to be used by trained professionals only. Prior to applying AC power to the CDB150x-01 board, the CS1501 needs to be biased using an external 13 VDC power supply. This document provides the schematic for the board. It includes oscilloscope screen shots that indicate operating waveforms. Graphs are also provided that document the performance of the board in terms of Efficiency vs. Load, Total Harmonic Distortion vs. Load, and Power Factor vs. Load for the CS1501 PFC controller IC. DS927DB3 3 4 2 4 IND-5MH-TSD-2796 1 3 C2 2200pF C1 2200pF C3 0.22uF Option5 @ U1=NCP1606B:(PIN2=CTRL,PIN3=CT) 1. No populated IC: U2 2. No populated capacitors: C5,C11,C13,C15 3. No populated resistors: R1,R2,R3,R10,R18,R20,R4,R21 4. Shorted components by #28 wire: L4,NTC2 5. Value_changed capacitors: C9=100nF,C8=390nF,C14=1.5nF 6. Value_changed resistors: R13=R14=1M,R15=2M,R17=54.9K,R22=24.9K 7. Value_changed resistors: R6=100K,R9=0.12/1W 8. Boost inductor L5 has same footprint RM10, but different inductance Option4 @ U1=L6562A: (PIN2-COMP, PIN3=MULT) 1. No populated IC: U2 2. No populated capacitors: C5,C11,C13,C15 3. No populated resistors: R4,R10,R18,R20 4. Shorted components by #28 wire: L4,NTC2 5. Value_changed capacitors: C9=150nF,C8=2.2uF,C14=10nF 6. Value_changed resistors: R15=0,R17=22K,R21=15K,R22=12.6K 7. Value_changed resistors: R1=0,R2=R3=R13=R14=1M,R6=47K,R9=0.3/1W 8. Boost inductor L5 has same footprint RM10, but different inductance Option2 @ U1=CS1501:(PIN2=STBY,PIN3=IAC) 1. No populated IC: U2 2. No populated capacitors: C5,C8,C9 3. No populated resistors: R4,R10,R17,R21,R22 4. Shorted components by #28 wire: L4,NTC2 5. Value_changed capacitors: C13=C14=C15=1nF 6. Value_changed resistors: R1=R2=R13=R14=1M,R3=R15=887K 7. Value_changed resistors: R6=48.7K,R18=1.74K,R9=0.1/3W 8. Boost inductor L5 has same footprint RM10, but different inductance Option3 @ U1=FAN7529:(PIN2=COMP, PIN3=MOT) 1. No populated IC: U2 2. No populated capacitors: C5,C11,C14,C15 3. No populated resistors: R1,R2,R3,R10,R18,R20 4. Shorted components by #28 wire: L4,NTC2 5. Shorted components by 0K resistor: C13 6. Value_changed capacitors: C9=47nF,C8=220nF 7. Value_changed resistors: R4=820K,R17=10K,R21=56K,R22=12.6K 8. Value_changed resistors: R6=20K,R13=R14=1M,R9=0.2/1W 9. Boost inductor L5 has same footprint RM10, but different inductance Option1 @ U2=CS1500: 1. No populated IC: U1 2. No populated capacitors: C5, C8, C9, C11 3. No populated resistors: R4,R6,R10,R17,R18,R21,R22 4. Shorted components by #28 wire: L4,NTC2,R9 5. Value_changed capacitors: C13=C14=C15=1nF 6. Value_changed resistors: R1=R2=R13=R14=1M,R3=R15=887K 7. Boost inductor L5 has same footprint RM10, but different inductance t NTC1 30 NO POP - SHORT WITH 28 AWG WIRE V300LA20AP 300V VZ L1 5mH NO POP, SHORT PIN 1-2 & PIN 3-4 with 28 AWG wire 1. ALL RESISTOR VALUES ARE IN OHMS. NOTES: UNLESS OTHERWISE SPECIFIED; 3 2 1 CON1 TERM BLK F1 4A IND-5MH-TSD-2796 L2 5mH C4 0.22uF FD1 1 FD2 MH2 MH1 1 FD3 1 603-00473-Z1 LBL SUBASSY PROD NUMBER LBL SUBASSY PROD ID AND REV XHS1 TO220-INSUL-MOUNT-HEATSINK-KIT SCREW-PHILIPS-4-40THR-PH-5/16-L-Z 240-00473-Z1 600-00473-Z2 ASSY DWGPCB DWG- SCH DWG- NO POP C5 R4 NO POP R3 1M R2 1M R1 1M C14 R21 X7R 1000pF NO POP NO POP NO POP C8 C9 NO POP R17 NO POP C6 0.33uF NO POP, SHORT WITH AWG28 WIRE L4 R22 NO POP 0 R23 D1 0 D3 LL4148 TP5 NO POP U2 CS1500-FSZ 1 8 VBIAS2 VBIAS1 2 7 STBY VDD 3 6 IRECT GD 4 5 ILINK GND U1 CS1501-FSZ 1 8 IFB VDD 2 7 NC GD 3 6 IAC GND 4 5 CS ZCD R16 R6 48.7K 380uH L5 RLCS-1007 MUR160 C15 X7R 1000pF NO POP TP7 NO POP R5 TP6 A1 A2 1PAD-H78P108 1PAD-H78P108 Figure 1. Schematic MH4 MH3 BR1 GBU4J-BP 600V 1PAD-H78P108 E2 - + Buss Bar 1PAD-H78P108 E1 L3 TP2 JP1 0.800" WIRE JUMPER S D 20K DESCRIPTION C11 33pF 4.7uF 1.78K R18 R10 NO POP C13 X7R 1000pF 1K 100 R15 1M R14 1M R13 1M TP8 C7 ELEC 100uF ENGINEER SIZE C 12/3/2010 DATE: CS1501 SHEET SCHEM., CDB150X-01 600-00473-Z2 R20 R19 R12 0 TP4 01/05/11 9/17/10 INC BY/DATE DRAWN BY: SHEET TITLE: DESCRIPTION: PART #: 100pF C12 1K HS1 12.5W 30 MUR460G 600V Q1 STP12NM50FP NO POP, SHORT WITH AWG28 WIRE NTC2 t D2 R11 CHANGED R6 FROM 17.8K TO 48.7K CHANGED L5 TO NEW FOOTPRINT INITIAL RELEASE C10 R9 0.1 R7 4.7 OHM 1W R8 G B1 ECO819 TP3 B A REV ECO806 ECO# 1 OF 1 REV B1 3 2 1 CON3 TERM BLK 2 1 CON2 TERM BLK 12/9/10 9/17/10 CHK BY/DATE CDB150x-01 2. SCHEMATIC DS927DB3 &LUUXV31 070-00157-Z1 011-00042-Z1 011-00055-Z1 011-00064-Z1 011-00040-Z1 013-00034-Z1 012-00191-Z1 000-00009-Z1 001-10233-Z1 001-05280-Z1 001-05542-Z1 001-06035-Z1 001-06035-Z1 110-00301-Z1 110-00302-Z1 070-00132-Z1 070-00154-Z1 070-00001-Z1 180-00025-Z1 311-00019-Z1 080-00013-Z1 050-00039-Z1 050-00039-Z1 040-00127-Z1 040-00127-Z1 050-00051-Z1 304-00004-Z1 036-00008-Z1 036-00008-Z1 071-00083-Z1 020-06374-Z1 000-00004-Z1 020-06376-Z1 020-06389-Z1 020-06310-Z1 030-00092-Z1 021-01186-Z1 020-02616-Z1 020-02273-Z1 020-06391-Z1 ,WHP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 &,5586/2*,& &'%;B5HYB& DS927DB3 A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A 5HY A RES 1M OHM 1/4W ±1% NPb 1206 NO POP RES NPb 1206 RES 48.7K OHM 1/4W ±1% NPb 1206 RES 4.7 OHM 1/4W ±1% NPb 1206 RES 20K OHM 1/4W ±1% NPb 1206 FILM RES 0.1 OHM 3W ±1% WW ISEN NPb AXL RES 1 OHM 1W ±5% NPb 2512 FILM RES 1k OHM 1/4W ±1% NPb 1206 FILM RES 0 OHM 1/4W NPb 1206 FILM RES 1.78K OHM 1/4W ±1% NPb 1206 TRAN MOSFET nCH 12A 500V NPb TO220 THERM 30 OHM 1.5A 5% NPb RAD THERM 30 OHM 1.5A 5% NPb RAD XFMR 380uH 10:1 PFC BOOST NPb TH SPCR STANDOFF 4-40 THR .500"L NPb IND 1mH 1.3A ±15% TOR VERT NPb TH IND 1mH 1.3A ±15% TOR VERT NPb TH XFMR 5mH 1:1 1500Vrms 4PIN NPb TH XFMR 5mH 1:1 1500Vrms 4PIN NPb TH WIRE 24 AWG SOLID PVC INS BLK NPb DIODE SS 75V 500mW NPb SOD80 FUSE 4A SLO BLO 250V NPb RAD HTSNK W LOCK TAB .5" TO220 NPb DIODE RECT 800V 1A 200mA NPb DO-41 DIODE RECT 600V 4A NPb DO-201AD TH CON 2POS TERM BLK 5.08mm SPR NPb RA CAP 2200pF ±10% 2000V CER NPb RAD CAP 0.22uF ±20% 305V PLY FLM NPb TH CAP 0.22uF ±20% 330V PLY FLM NPb TH CAP 0.47uF ±20% 305V PLY FLM NPb TH CAP 0.33uF ±10% 630V POLY NPb RAD CAP 100UF ±20% 450V ELEC NPb RAD NO POP CAP NPb 1206 CAP 4.7uF ±20% 25V X7R NPb 1206 CAP 33pF ±5% 50V C0G NPb 1206 CAP 100pF ±5% 50V C0G NPb 1206 CAP 1000pF ±5% 50V X7R NPb 1206 CAP 1000pF ±5% 50V X7R NPb 1206 CON 3POS TERM BLK 5.08mm SPR NPb RA 'HVFULSWLRQ DIODE RECT BRIDGE 600V 4A NPb GBU 6 0 1 1 1 1 0 2 3 1 1 0 0 1 4 1 0 1 0 1 1 1 1 1 1 1 2 0 1 0 1 1 0 1 1 1 1 0 2 4W\ 1 R1 R2 R3 R13 R14 R15 R4 R5 R17 R21 R22 R6 R7 R8 R9 R10 R11 R20 R12 R16 R23 R18 Q1 NTC2 NTC1 L5 MH1 MH2 MH3 MH4 L3 L4 L2 L1 JP1 D3 F1 HS1 D1 D2 CON2 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 CON1 CON3 5HIHUHQFH'HVLJQDWRU BR1 %,//2)0$7(5,$/3DJHRI 1716020000 DEBB33D222KA2B B32923C3224M B32912B3224M B32922C3474M ECQE6334KF UVZ2W101MRD NP-CAP-1206 C3216X7R1E475M C1206C330J5GAC C1206C101J5GAC C1206C102J5RAC C1206C102J5RAC 1716030000 0)*31 GBU4J-BP LL4148 RST 4 6021BG ST MICROELECTRONICS DALE NO POP DALE DALE DALE OHMITE DALE DALE DALE DALE GE SENSING GE SENSING RENCO KEYSTONE BOURNS BOURNS CRCW12061M00FKEA NP-RES-1206 CRCW120648K7FKEA CRCW12064R70FKEA CRCW120620K0FKEA 13FR100E CRCW25121R00JNEG CRCW12061K00FKEA CRCW12060000Z0EA CRCW12061K78FKEA STP12NM50FP CL-210 CL-210 RLCS-1007 2203 2124-V-RC 2124-V-RC PREMIER MAGNETICS TSD-2796 ALPHA WIRE 3050/1 BK005 COMPANY PREMIER MAGNETICS TSD-2796 DIODES INC BELFUSE AAVID THERMALLOY DIODES INC 1N4006G-T ON SEMICONDUCTOR MUR460G WEIDMULLER 0)* MICRO COMMERCIAL CO MURATA EPCOS EPCOS EPCOS PANASONIC NICHICON NO POP TDK KEMET KEMET KEMET KEMET WEIDMULLER DO NOT POPULATE DO NOT POPULATE ECO819 ECO805 DO NOT POPULATE, SHORT WITH AWG28 WIRE ECO806 REQUIRES SCREW 4-40X5X16" PH STEEL 300-00025-Z1 DO NOT POPULATE, SHORT WITH 28 AWG WIRE DO NOT POPULATE, SHORT WITH AWG28 WIRE DO NOT POPULATE, SHORT PIN 12 & PIN 3-4 with 28 AWG wire REQUIRES 1 SCREW, 300-00025Z1, 1 WASHER, 301-00013-Z1, 1 NUT, 302-00007-Z1 SEE ASSY DWG FOR LENGTH DO NOT POPULATE DO NOT POPULATE DO NOT POPULATE ECO0841 DO NOT POPULATE 1RWHV CDB150x-01 3. BILL OF MATERIALS 5 6 C C C A A 422-00013-01 422-00037-01 603-00473-Z1 240-00473-Z1 600-00473-Z2 080-00036-Z1 080-00002-01 48 49 50 51 52 C C A 300-00025-Z1 47 Rev A A A2 C1 A A Cirrus P/N 020-02502-Z1 110-00025-Z1 065-00328-Z3 065-00276-Z5 036-00006-Z1 311-00025-Z1 Item 41 42 43 44 45 46 CIRRUS LOGIC CDB150X-01_Rev_C WIRE 28/1 AWG, KYNAR MOD, 500FT ASSY DWG CDB150X-0X-Z-NPb PCB CDB150X-0X-Z-NPb SCHEM CDB150X-01-Z-NPb WIRE 22AWG 19/34 STR BLK 105C NP LBL SUBASSY PRODUCT ID AND REV LBL SUBASSY PRODUCT NUMBER SCREW 4-40X5/16" PH MACH SS NPb Description RES 100 OHM 1/4W ±1% NPb 1206 FILM CON TEST PT .1" TIN PLATE WHT NPb IC CRUS LPWR FACTOR CORR NPb SOIC8 IC CRUS LPWR FACTOR CORR NPb SOIC8 VARISTOR 300V 400pF 14mm NPb RAD HTSNK TO220 MOUNTING KIT NPb 1 REF 1 REF 1 1 1 4 Qty 1 7 1 0 1 1 XMH1 XMH2 XMH3 XMH4 Reference Designator R19 TP2 TP3 TP4 TP5 TP6 TP7 TP8 U1 U2 VZ XHS1 BILL OF MATERIAL (Page 2 of 2) MFG P/N CRCW1206100RFKEA 5002 CS1501-FSZ/A2 CS1500-FSZ/C1 V300LA20AP 4880G CIRRUS LOGIC CIRRUS LOGIC CIRRUS LOGIC ALPHA WIRE COMPANY SQUIRES CIRRUS LOGIC CIRRUS LOGIC L 500 UL1422 28/1 BLU 603-00473-Z1 240-00473-Z1 600-00473-Z2 5855 BK005 422-00013-01 422-00037-01 BUILDING FASTENERS PMSSS 440 0031 PH MFG DALE KEYSTONE CIRRUS LOGIC CIRRUS LOGIC LITTELFUSE AAVID THERMALLOY ECO824, SEE ASSY DWG SEE ASSYDWG FOR LABEL PLACEMENT ECO805/ECO824/ECO0841 ECO805/ECO824/ECO0841 ECO819/EC O0841 ECO824, SEE ASSY DWG INCLUDES ALL MOUNTING HARDWARE ECO0841 DO NOT POPULATE Notes CDB150x-01 DS927DB3 CDB150x-01 Figure 2. Top Silkscreen 4. BOARD LAYOUT DS927DB3 7 8 Figure 5. Bottom Solder Paste Mask Figure 4. Bottom Silkscreen Figure 3. Bottom Routing CDB150x-01 DS927DB3 CDB150x-01 5. PERFORMANCE PLOTS Vin=110 Vin=220 99 97 Efficiency(%) 95 93 91 89 87 85 5 6 7 8 9 10 13.5 18 27 36 45 63 90 94.5 Output Power (W) Figure 6. Efficiency vs. Load at 110 VAC, 220 VAC 20 18 16 Vin=110 Vin=220 14 THD(%) 12 10 8 6 4 2 0 10 13.5 18 27 36 45 63 90 94.5 Output Power (W) Figure 7. Distortion vs. Load at 110 VAC, 220 VAC DS927DB3 9 CDB150x-01 1 0.95 Power Factor 0.9 Vin=110 Vin=220 0.85 0.8 0.75 0.7 10 13.5 18 27 36 45 63 90 94.5 Output Power (W) Figure 8. Power Factor vs. Load at 110 VAC, 220 VAC 410 408 406 404 402 VLink (V) Vin=110 Vin=220 400 398 396 394 392 390 1 2 3 4 5 6 7 8 9 10 13.5 18 27 36 45 63 90 94.5 Output Power (W) Figure 9. VLink vs. Output Power at 110 VAC, 220 VAC 10 DS927DB3 CDB150x-01 Figure 10. Steady State Waveforms — 110 VAC Figure 11. Switching Frequency Profile at Peak of AC Line Voltage — 110 VAC DS927DB3 11 CDB150x-01 Figure 12. Switching Frequency Profile at Trough of AC Line Voltage — 110 VAC Figure 13. Steady State Waveforms — 220 VAC 12 DS927DB3 CDB150x-01 Figure 14. Switching Frequency Profile at Peak of AC Line Voltage — 220 VAC Figure 15. Switching Frequency Profile at Trough of AC Line Voltage — 220 VAC DS927DB3 13 CDB150x-01 Figure 16. Load Transient — 9 W to 90 W, 1 W/uS, 110 VAC Figure 17. Load Transient — 90 W to 9 W, 1 W/uS, 110 VAC 14 DS927DB3 CDB150x-01 Figure 18. Load Transient — 9 W to 90 W, 1 W/uS, 220 VAC Figure 19. Load Transient — 90 W to 9 W, 1 W/uS, 220 VAC DS927DB3 15 CDB150x-01 6. REVISION HISTORY Revision 16 Date Changes DB1 FEB 2011 Initial Release. DB2 FEB 2011 Updated Efficiency vs. Load plot with more current data. DB3 MAR 2011 Updated BOM & Layers to rev C. DS927DB3