1 8mm coupled inductors for volterra gen2.5 applications for use only with volterra chipsets coupled inductors enable: ? phase 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 electrical specifcations @ 25c - operating temperature -40c to +130c part number number of coupled phases series inductance (nh +/- 15%) equivalent transient (nh) i rms_tdc (adc) imax peak 3 per phase (adc) open circuit inductance 4,5 per phase (nh) phase 1 (2-1) phase 2 (4-3) phase 3 (6-5) phase 4 (8-7) phase 5 (10-9) dcr per phase 6 (m ) PA3142AHL 2 100 50 40 110 200nh min at 0adc (25c) 150nh min at 25adc (25c) 100nh min at 23adc (105c) na na na 0.25 typical 0.30 max pa3143ahl 3 150 200nh min at 0adc (25c) 150nh min at 25adc (25c) 100nh min at 23adc (105c) na na pa3144ahl 4 200 200nh min at 0adc (25c) 150nh min at 25adc (25c) 100nh min at 23adc (105c) na pa3145ahl 5 250 200nh min at 0adc (25c) 150nh min at 25adc (25c) 100nh min at 23adc (105c) notes: 1. the series inductance is the inductance when all phases are tied in series and is measured and verifed in production at 100khz, 100mvrms: (ie: for pa3144ahl: inductance (2-7) with (1-4 and 3-6 and 5-8 shorted) ) 2. 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 felds 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 (lk) that would be required in an non-coupled topology to realize the same transient perfor - mance. the equivalent inductance per phase can be calculated as series inductance divided by the number of phases. for more information on the operation of the coupled inductor topology, please contact volterra. 3. the rated current (i rms_tdc ) is the continuous current which results in a 55 c rise of the component temperature above the ambient temperature (conditions: ta=55 c; 200lfm airfow; tested on a volterra evaluation board). the peak current (imax) is the current which causes a 20% reduction of the leakage inductance compared to no load conditions at 105 c. 4. the open-circuit inductance per phase is the measured inductance across each phase when all other phases are open circuit. open circuit inductance is measured at 100khz, 100mvrms. the open circuit inductance is equal to the magnetizing inductance per phase (lm) plus the equivalent transient inductance (lk). the open circuit inductance values at 25c (0adc and 26 adc) are measured and verifed during production. 5. all elevated temperature measurements were verifed during design but are not measured during production and therefore are for reference only. 6. dcr is measured between points a and b as shown on the mechanical drawing. 7. optional tape and reel packaging can be ordered by adding a t sufx to the part number (ie: pa3144ahl becomes pa3144ahlt). pulse complies to the industry standard tape and reel specifcation eia481. the tape and reel for this product has the following dimensions: PA3142AHL: w=32.0, po =16.0, ko = 8.0 pa3143ahl: w=44.0, po = 16.0, ko =7.6 pa3144ahl: w=56.0, po=16.0, ko=7.6 pa3145ahl: w=72, po=16.0, ko=8.0 p715.d (9/13) pulseelectronics.com smt power inductors power beads - pa314xahl series coupled inductor
2 PA3142AHL pa3143ahl mechanicals primary suggested land pattern primary suggested land pattern mechanicals schematic schematic pulse p a3142ahl * all dimensions in mm. unless stated otherwise the tolerance on the listed dimensions are: .x 0.2 .xx 0.10 * all dimensions in mm. unless stated otherwise the tolerance on the listed dimensions are: .x 0.2 .xx 0.10 final outline p715.d (9/13) pulseelectronics.com smt power inductors power beads - pa314xahl series coupled inductor
3 pa3144ahl mechanicals mechanicals schematic schematic pa3145ahl 35.5 0.5 8 surf a ces .127 8x 6.16 0.20mm 10.5 0.5 10.16 0.10mm 8x 2.7 0.2mm 8.0 4.0mm 9.0mm 3.1mm 7.0mm 3.6mm 4.3mm 8x 7.0mm 3x 3.5mm 4x 9.0mm 8x 4.0mm (9.0mm) max 12 34 56 78 8x 3.1 4x 3.6 9.0 4.3 18.0 27.0 7.0 11.3 46 8 2 35 7 1 35 9.90 0.25 4x 3.70 8x 2.40 7 1 46 8 2 6.0 6.0 9.00 18.0 27.0 0.3 8x 3.1 4x 3.6 9.0 4.3 18.0 27.0 7.0 11.3 46 8 2 35 7 1 35 9.90 0.25 4x 3.70 8x 2.40 7 1 46 8 2 6.0 6.0 9.00 18.0 27.0 0.3 * all dimensions in mm. unless stated otherwise the tolerance on the listed dimensions are: .x 0.2 .xx 0.10 * all dimensions in mm. unless stated otherwise the tolerance on the listed dimensions are: .x 0.2 .xx 0.10 suggested land pattern final outline final outline tolerance on pads = 0.05 primary suggested land pattern p715.d (9/13) pulseelectronics.com smt power inductors power beads - pa314xahl series coupled inductor
4 for more information pulse worldwide headquarters 12220 world trade drive san diego, ca 92128 u.s.a. tel: 858 674 8100 fax: 858 674 8262 pulse europe zeppelinstrasse 15 71083 herrenberg germany tel: 49 7032 7806 0 fax: 49 7032 7806 12 pulse china headquarters b402, shenzhen academy of aerospace technology bldg. 10th kejinan road high-tech zone nanshan district shenzen, pr china 518057 tel: 86 755 33966678 fax: 86 755 33966700 pulse north china room 2704/2705 super ocean finance ctr. 2067 yan an road west shanghai 200336 china tel: 86 21 62787060 fax: 86 2162786973 pulse south asia 135 joo seng road #03-02 pm industrial bldg. singapore 368363 tel: 65 6287 8998 fax: 65 6287 8998 pulse north asia 3f no. 198, zhongyuan road zhongli city taoyuan county (32068) taiwan tel: 886 3 4356768 fax: 886 3 4356823 performance warranty of products ofered on this data sheet is limited to the parameters specifed. 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, 2013. pulse electronics, inc. all rights reserved. dcr measurement location a 1 2 b pa314xhl p715.d (9/13) pulseelectronics.com smt power inductors power beads - pa314xahl series coupled inductor
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