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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 (R), VT1115M (R) 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 @ 25C -- Operating Temperature -40C to +130C
Pulse Part No. Number of Coupled Phases 2 3 4 5 Equivalent 1 Transient Inductance per Phase (nH) 50 50 50 50 Irated 2 per Phase (Adc) 40 40 40 40 Magnetizing Inductance per Phase 3 nH 15%, 0Adc L1 (1-2) 300 360 360 360 L2 (3-4) 300 440 480 460 L3 (5-6) 360 480 480 L4 (7-8) 360 460 L5 (9-10) 360 Magnetizing Inductance per Phase 4 nH MIN, 5Adc L1 (1-2) 240 285 285 285 L2 (3-4) 240 350 385 365 L3 (5-6) 285 385 385 L4 (7-8) 285 365 L5 (9-10) 285 0.425 0.5 DCR/Phase 5 TYP MAX
PA1312NL PA1313NL PA1314NL PA1315NL
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.
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 (R) and VT1115M (R) are registered trademarks of Volterra Semiconductor Corporation.
Mechanical
PA1312NL
.720 MAX 18,29 .354 9,00 MAX 4X .134 3,40 2X .193 4,90
.732 18,60
Schematic
.354 9,00
Date Code Country of Origin
PA1312NL 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
L1 1 23
L2 4
1
4
SUGGESTED PAD LAYOUT
.205 5,20 MAX
.559 14,20 1.260 .012 32.00 0,30 .366 9,30 .630 16,00
.217 5,50
TAPE & REEL LAYOUT
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
Mechanical
PA1313NL
1.070 MAX 27,30 .354 9,00 MAX
6
Schematic
6X .134 3,40
2X
.709 .354 = 9,00 18,00
Weight . . . . . . . . . . .4.5 grams Tape & Reel . . . . . . . .650/reel Tray . . . . . . . . . . . . . . .45/tray
L1 1 23
L2 45
L3 6
Date Code
1 2
PA1313NL
3 4
Country of Origin
5
.354 9,00
3X
.193 4,90
.795 .006 20.20 0,15 1.087 27,60 1.732 .012 44.00 0,30
SUGGESTED PAD LAYOUT
.205 5,20 MAX
.004/0,10 6 SURFACES
.217 5,50
TAPE & REEL LAYOUT
.366 9,30
.630 16,00
USER DIRECTION OF FEED
PA1314NL
1.440 MAX 36,58 .354 9,00 MAX
8
3X 8X .134 3,40
.354 1.063 = 9,00 27,00
Weight . . . . . .6.0 grams Tape & Reel . . .550/reel Tray . . . . . . . . . .30/tray
1
L1 23
L2 45
L3 67
L4 8
Date Code
1 2 3
PA1314NL
4 5
Country of Origin
6 7
.354 9,00
4X
.193 4,90
1.453 36,90
1.031 .006 26.20 0,15
SUGGESTED PAD LAYOUT
.205 5,20 MAX
.004/0,10 8 SURFACES
2.205 .012 56.00 0,30
.217 5,50
TAPE & REEL LAYOUT
.366 9,30
.630 16,00
USER DIRECTION OF FEED
PA1315NL
1.800 MAX 45,72 .354 9,00 MAX
9 10
.134 10X 3,40
4X
.354 1.417 = 9,00 36,00
L1 1 23 L2 45 L3 67 L4 89 L5 10
Date Code
1 2 3 4
PA1315NL
5 6
Country of Origin
7 8
.354 9,00
.193 5X 4,90
Weight . . . . . . . . . . .7.5 grams Tape & Reel . . . . . . . .500/reel Tray . . . . . . . . . . . . . . .30/tray
SUGGESTED PAD LAYOUT
.205 5,20 MAX
.004/0,10 10 SURFACES
1.811 46,00 2.835 .012 72.00 0,30
1.348 34,25
All Part Numbers: Dimensions: Inches mm Unless otherwise specified, all tolerances are .010 0,25
For More Information:
Pulse Worldwide Headquarters
12220 World Trade Drive San Diego, CA 92128 U.S.A. www.pulseeng.com TEL: 858 674 8100 FAX: 858 674 8262
.217 5,50
TAPE & REEL LAYOUT
.366 9,30
.630 16,00
USER DIRECTION OF FEED
Pulse Northern Europe
3 Huxley Road Surrey Research Park Guildford, Surrey GU2 5RE United Kingdom TEL: 44 1483 401700 FAX: 44 1483 401701
Pulse Southern Europe
Zone Industrielle F-39270 Orgelet France TEL: 33 3 84 35 04 04 FAX: 33 3 84 25 46 41
Pulse Pulse North China China Headquarters Room 1002
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
Pulse South Asia
150 Kampong Ampat #07-01/02 KA Centre Singapore 368324 TEL: 65 6287 8998 FAX: 65 6280 0080
Pulse North Asia
3F-4, No. 81, Sec. 1 Hsin Tai Wu Road Hsi-Chih Taipei Hsien Taiwan TEL: 886 2 26980228 FAX: 886 2 26980948
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. (c) Copyright, 2005. Pulse Engineering, Inc. All rights reserved.
www.pulseeng.com
P636.A (11/05)

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