SMT POWER INDUCTORS Power Beads - PA131xNL Series Coupled Inductors Two, three, four and five phase Coupled Inductors for VR10/VR11 applications For use only with Volterra VT1105M ®, VT1115M ® chipsets Coupled Inductors enable: • Output ripple current reduction due to AC magnetic field cancellation within the inductor core • Improved efficiency due to lower peak currents • Reduction in required output capacitance • Faster transient response due to the ability to use lower effective inductance values • Reduced overshoot/undershoot during load transients • Frequency range up to 2MHz Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C Number of Coupled Phases Equivalent 1 Transient Inductance per Phase (nH) Irated 2 per Phase (Adc) PA1312NL 2 50 PA1313NL 3 50 PA1314NL 4 PA1315NL 5 Pulse Part No. Magnetizing Inductance per Phase 3 nH ±15%, 0Adc L3 (5-6) L1 (1-2) L2 (3-4) 40 300 300 - - - 240 240 - - - 40 360 440 360 - - 285 350 285 - - 50 40 360 480 480 360 - 285 385 385 285 - 50 40 360 460 480 460 360 285 365 385 365 285 NOTES: 1. In a non-coupled multi-phase topology, the power supply sees the same inductance during transient and steady-state conditions. As a result, any attempt to lower the inductance to improve transient response has the negative result of increasing ripple and peak currents throughout the system during steady-state operation. However, in a coupled inductor multi-phase topology, the interaction of magnetic fields from each phase enables an overall reduction in ripple current during steady-state operation and a lower equivalent inductance during transient operation. The equivalent transient inductance per phase, as listed, represents the actual value of inductance that would be required in an non-coupled topology to realize the same transient performance. This value is achieved by core and winding geometry and is not directly measured by Pulse. For more information on the operation of the coupled inductor topology, please contact Volterrra. L4 (7-8) L5 (9-10) Magnetizing Inductance per Phase 4 nH MIN, 5Adc L1 (1-2) L2 (3-4) L3 (5-6) L4 (7-8) DCR/Phase 5 L5 (9-10) TYP MAX 0.425 0.5 2.The rated current per phase is based on Volterra's testing of the Pulse coupled inductors. 3.The magnetizing inductance per phase is the measured inductance (at 0Adc) across each phase when all other phases are open-circuit. This inductance is a Pulse production measurement. Although the equivalent inductance per phase during steady-state is significantly higher then the equivalent transient inductance as listed, it should not be confused with the magnetizing inductance. 4.The magnetizing inductance per phase is the measured inductance (at 5Adc) across each phase when all other phases are open-circuit. This inductance is a Pulse production measurement. This test is performed to verify that the inductor can withstand a phase-to-phase load imbalance of 5Adc without saturating. 5.The nominal value of DCR/phase is for reference only. For production testing, the maximum limit is used. 6.The VT1105M ® and VT1115M ® are registered trademarks of Volterra Semiconductor Corporation. Schematic Mechanical PA1312NL .720 MAX 18,29 PA1312NL Date Code Country of Origin 1 2 3 Weight . . . . . . . . . . .3.0 grams Tape & Reel . . . . . . . .650/reel Tray . . . . . . . . . . . . . . .60/tray Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 .354 9,00 4 .354 9,00 MAX 4X .134 3,40 2X SUGGESTED PAD LAYOUT .205 5,20 MAX L1 1 .193 4,90 L2 2 3 4 .559 14,20 .732 18,60 .217 5,50 1.260 ± .012 32.00 ± 0,30 TAPE & REEL LAYOUT .366 9,30 .630 16,00 USER DIRECTION OF FEED USA 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Shanghai 86 21 32181071 • China 86 769 5538070 • Taiwan 886 2 26980228 www.pulseeng.com P636.A (11/05) SMT POWER INDUCTORS Power Beads - PA131xNL Series Coupled Inductors Schematic Mechanical PA1313NL 2X 1.070 MAX 27,30 Date Code 1 2 6X Country of Origin 4 5 .134 3,40 Weight . . . . . . . . . . .4.5 grams Tape & Reel . . . . . . . .650/reel Tray . . . . . . . . . . . . . . .45/tray .354 9,00 MAX PA1313NL 3 .709 .354 = 9,00 18,00 6 .354 9,00 3X .193 4,90 SUGGESTED PAD LAYOUT L1 1 L2 L3 2 3 4 5 6 .795 ± .006 20.20 ± 0,15 1.087 27,60 1.732 ± .012 44.00 ± 0,30 .205 5,20 MAX .004/0,10 6 SURFACES PA1314NL 3X 1.440 MAX 36,58 Date Code 1 2 3 8X Country of Origin 5 6 7 .134 3,40 .354 1.063 = 9,00 27,00 .366 9,30 .630 16,00 Weight . . . . . .6.0 grams Tape & Reel . . .550/reel Tray . . . . . . . . . .30/tray L1 1 .354 9,00 MAX PA1314NL 4 TAPE & REEL LAYOUT .217 5,50 8 .354 9,00 4X USER DIRECTION OF FEED L2 L3 2 3 4 5 L4 6 7 8 1.031 ± .006 26.20 ± 0,15 .193 4,90 SUGGESTED PAD LAYOUT 1.453 36,90 2.205 ± .012 56.00 ± 0,30 .205 5,20 MAX .004/0,10 8 SURFACES PA1315NL 1.800 MAX 45,72 Date Code 1 2 3 4 7 8 9 .366 9,30 L1 1 10 .630 16,00 L2 2 3 L3 4 5 L4 6 7 L5 8 9 10 Weight . . . . . . . . . . .7.5 grams Tape & Reel . . . . . . . .500/reel Tray . . . . . . . . . . . . . . .30/tray .193 5X 4,90 .354 9,00 USER DIRECTION OF FEED .354 1.417 = 9,00 36,00 .354 9,00 MAX Country of Origin 6 4X .134 10X 3,40 PA1315NL 5 TAPE & REEL LAYOUT .217 5,50 SUGGESTED PAD LAYOUT .205 5,20 MAX .004/0,10 10 SURFACES All Part Numbers: Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 1.348 34,25 1.811 46,00 2.835 ± .012 72.00 ± 0,30 .217 5,50 For More Information: TAPE & REEL LAYOUT Pulse Worldwide Headquarters Pulse Northern Europe Pulse Southern Europe Pulse Pulse North China China Headquarters Room 1002 12220 World Trade Drive San Diego, CA 92128 U.S.A. www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262 3 Huxley Road Surrey Research Park Guildford, Surrey GU2 5RE United Kingdom TEL: 44 1483 401700 FAX: 44 1483 401701 Zone Industrielle F-39270 Orgelet France TEL: 33 3 84 35 04 04 FAX: 33 3 84 25 46 41 No. 1 Industrial District Changan, Dongguan China TEL: 86 769 5538070 FAX: 86 769 5538870 No. 819 Nanjing West Rd Shanghai China TEL: 86 21 32181071 FAX: 86 21 32181396 .366 9,30 .630 16,00 USER DIRECTION OF FEED Pulse South Asia Pulse North Asia 150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 3F-4, No. 81, Sec. 1 Hsin Tai Wu Road Hsi-Chih Taipei Hsien Taiwan TEL: 886 2 26980228 FAX: 886 2 26980948 TEL: 65 6287 8998 FAX: 65 6280 0080 Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. © Copyright, 2005. Pulse Engineering, Inc. All rights reserved. www.pulseeng.com P636.A (11/05)