6-pak 8/2001 rev f page 1 features small sip design parallelable boost sip one stocking part meets a variety of loads programmable control sip control/boost pair extremely configurable fast transient response no need for large external capacitors extremely small footprint low component count low cost, high reliability staked pins wave solderable integrated input filter low input ripple application note dcan-34 - 6-pak demo board downloadable from our website - cdpowerelectronics.com description the 6-pak? is a modular system of control and boost sips. each 6a control sip can also drive up to 8 additional 6a boost sips in parallel, for a total of 54a. each sip accepts a regulated 5v input ( +10%) and provides 2.5v to 3.6vdc output. the circuit is optimized for high efficiency and fast load transient response needed by telecom, dsp and microprocessor applications. advanced thermal design, monolithic power circuitry and synchronous rectification result in outstanding performance and value. with integrated input filter and output capacitors, the 6-pak system makes a complete power supply which requires no external components over the specified operating range. pins are staked for wave solderability. 6-p ak 6-p ak s power electronics division www.cdtechno.com click on power electronics series programmable dc/dc converter product data sheet power: 6 amp parrallelable boost modules size: 2.00 x 0.60 x .27 ordering information typical examples: 6p 25 - ca 6a control sip 6p 25 - p 6a power booster sip
6-pak 8/2001 rev f page 2 parameter conditions min typ max units input input voltage v in 4.5 5.0 5.5 v dc input current ripple v in = 4.5v to 5.5v, i o = 6a 400 ma rms required capacitance c in note 1 0 100 f output output voltage v o nominal 3.25 3.3 3.35 v dc output program range note 2 2.5 3.6 v dc output current i o t a = 60 c 0 6 amps output ripple 20mhz bw 50 75 m vp-p output rise time tr v in = 5v, i o = 6a resistive, c o = 0 430 500 s output start-up time tr v in = 5v, i o = 6a resistive, c o = 5000 f 3.0 4.0 ms output capacitance range c o 0 5000 f line regulation i o = 6a +0.2 +0.5 % load regulation i o min - i o max, v in = 4.5-5.5v +0.8 +1.2 % temperature coefficient t a = -40 c to +60 cv in = 5v, i o = 6a +0.01 %/ c combined variation v in min-max & /or i o min-max t a = -40 c to +60 c +2 % protection note 3 general switching frequency 800 khz dynamic response ? i o / ? t = 1a/10 sec, v i = 5.0v, t a = 25 c load change from i o = 0% to i o = 100% peak deviation 20 30 mv settling time (v o <10% peak deviation) 130 200 sec load change from i o = 100% to i o = 0% peak deviation 20 35 mv settling time (v o <10% peak deviation) 200 300 sec temperature operating temperature -40 +60 c storage temperature -40 +125 c electrical specifications unless otherwise specified, operating conditions are as follows: v o = 3.3v, t a = 25 c, c in = 100 f notes 1. input source<3 ? from 6-pak ? , load transient <3a per sip. 100 f low esr capacitor for load transients >3a per sip. 2. optional programming 2.5v - 3.6v. see table. 3. the unit is protected against short circuit on the output for durations not exceeding 10 seconds and a repetition rate of less than 5%.
6-pak 8/2001 rev f page 3 programming the 6-pak ? is programmed through the control sip. all connected power boosters follow the control sip programming. to program the 6-pak ? for v out <3.3, connect a resistor across the trim and v o pins. for v out >3.3, resistor is connected across trim and gnd. v out resistor value v out resistor value 2.5 196 ? 3.1 1.37k 2.6 255 ? 3.2 2.80k 2.7 332 ? 3.3 open 2.8 442 ? 3.4 2.32k 2.9 604 ? 3.5 1.00k 3.0 866 ? 3.6 649 ? typical performance curves 80.00 83.00 86.00 89.00 92.00 95.00 -40-30-20-100 102030405060 efficiency (%) efficiency v/s ambient temp. ambient temp. (deg. c) transient response operating conditions are as follows: v in =5v, v o =3.3v, load change from i o =0% to i o =100%, t a =25 c, c in =100 f, c o =0. operating conditions are as follows: vin=5v, vo=3.3v, load change from io=100% to io=0%, t a =25 c, cin=100 f, co=0. (unless otherwise specified, operating conditions are as follows: v in = 5.0v, v o = 3.3v, i o = 6a, t a = +25 c, c in = 100 f, c out = 0.) note: the ambient temperature is as measured at approx. 1/4 ? away on the back side of the unit, with the probe end at approx. center (vertical & horizontal). for thermal performance, the unit was mounted on a 4 ? x4 ? pcb (with ground plane) & enclosed in a box so that it operates in a controlled environment.
6-pak 8/2001 rev f page 4 mechanical outline tolerances +.008 ? for 3 place decimals + .02 ? for 2 place decimals + .002 ? for pin diameter standard options are shown, consult factory for other available options. system interconnection guidelines 1. each sip must have input, ground and output pins sunk into common input ground and output planes in the host pc board. 2. two additional common signal traces are required to interconnect int1 and int2 pins. these traces must be a least 0.06 ? wide and make a straight connection among the modules. 3. power booster sip must be adjacent to the control sip located in the center of the layout, as shown in the typical example figure. recommended distance between sip pin centers is 0.5 ? . 4. a 300 lfm air flow is required in direction from pin 9 to pin 1, to draw rated power from booster configuration. each application using boosters should be evaluated for thermal performance. pin function description 1v o output voltage 2v o output voltage 3 trim output adjust* 4 gnd ground 5 inti intermodule 1 6 gnd ground 7 int2 intermodule 2 8v i 5v input voltage 9v i 5v input voltage * not connected on boosters pin out any data, prices, descriptions or specifications presented herein are subject to revision by c&d technologies, inc. without not ice. while such information is believed to be accurate as indicated herein, c&d technologies, inc. makes no warranty and hereby disclaims all warranties, express or impli ed, with regard to the accuracy or completeness of such information. further, because the product(s) featured herein may be used under conditions beyond its cont rol, c&d technologies, inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particula r use or in any specific application or arising from any course of dealing or usage of trade. the user is solely responsible for determining the suitability of the product(s) feat ured herein for user ? s intended purpose and in user ? s specific application. c&d technologies, inc. does not warrant or recommend that any of its products be used in any life supp ort or aviation or aerospace applications. power electronics division, united states 3400 e britannia drive, tucson, arizona 85706 tel: 800.547.2537 fax: 520.770.9369 c&d technologies (power electronics) ltd. shannon, co. clare, ireland tel: +353.61.474.133 fax:+353.61.474.141 c&d technologies, (ncl) milton keynes mk14 5bu uk tel: +44 (0)1908 615232 fax: +44 (0)1908 617545
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