EV8758H-L-00A 22v, 10a, high current synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 1 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. the future of analog ic technology description the EV8758H-L-00A is used for demonstrating the performance of mp8758h, a fully-integrated, high efficiency, synchronous step-down switch mode converter. mp8758h provides up to 10a continuous output current over a wide input supply range with constant-on-time control for fast loop response. the evaluation board can deliver 10a continuous load current from a 4.5v to 22v input with excellent load and line regulation. this part requires minimum number of external components and is available in qfn21 (3mmx4mm) package electrical specification paramete r symbol v alue units input voltage v in 4.5-22 v output voltage v out 1.2 v output current i out 10 a switching frequency f sw 500 khz features ? wide 4.5v to 22v operating input range ? 10a continous output current ? low r ds (on) internal power mosfets ? proprietary switching loss reduction technique ? internal soft start ? output discharge ? 500khz switching frequency ? pfm/pwm mode selection ? hiccup mode ocp, uvp ? auto retry thermal shutdown, ovp ? output adjustable from 0.604v applications ? laptop computer ? tablet pc ? networking systems ? personal video recorders ? flat panel television and monitors ? distributed power systems a ll mps parts are lead-free and adhere to the rohs directive. for mps green status, please visit mps website under products, quality assurance page. ?mps? and ?the future of analog ic technology?, are registered trademarks of monolithic power systems, inc. EV8758H-L-00A evaluation board (l w h) 8.55cm 8.55cm 1.6cm board numbe r mps ic numbe r EV8758H-L-00A mp8758hgl load current(a) efficiency vs. output current 10 20 30 40 50 60 70 80 90 100 0.01 0.1 1 10 v in =12v v in =22v v in =4.5v
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 2 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. evaluation board schematic EV8758H-L-00A bill of materials qty re f v alue description package manufacture r manufacturer p/n 2 c1a,c1b 22f ceramic cap, 25v, x7r 1206 murata grm31er71e226ke15l 2 c1c,c2d 0.1f ceramic cap, 25v, x7r 0603 murata grm188r71e104ka01d 3 c2a,c2b, c2c 22f ceramic cap, 16v, x5r 1206 murata grm31cr61c226me15l 1 c3 220nf ceramic cap, 25v, x7r 0603 murata grm188r71e224ka88d 1 c4 220pf ceramic cap, 50v, x7r 0603 murata grm188r71h221ka01d 1 c5 1uf ceramic cap, 25v, x7r 0603 murata grm188r71e105ka12d 1 l1 1.2h dcr=1.8m ? , isat=25a 11mm 10.2mm wurth 744325120 3 r1,r2,r7 100k ? film res, 1% 0603 royal rl0603fr-07100kl 1 r3 4.7 ? film res, 1% 0603 royal rl0603fr-074r7l 0 r4,r6 ns 1 r5 499k ? film res, 1% 0603 royal rl0603fr-07499kl 1 r8 499 ? film res, 1% sm0603 royal rl0603fr-07499rl 1 u1 mp8758hgl dc-dc converter qfn3 4 mps mp8758hgl
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 3 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. evb test results performance waveforms are tested on the EV8758H-L-00A. v in =12v, v out =1.2v, l=1.2h, t j =+25c, unless otherwise noted. v pg 5v/div. v in 10v/div. v out 500mv/div. v sw 10v/div. i inductor 2a/div. v pg 5v/div. v in 5v/div. v out 500mv/div. v sw 10v/div. i inductor 2a/div. v pg 5v/div. v en 5v/div. v out 500mv/div. v sw 10v/div. i inductor 2a/div. v in 5v/div. v out 500mv/div. v sw 5v/div. i inductor 2a/div. v en 5v/div. v out 500mv/div. v sw 5v/div. i inductor 2a/div. v pg 5v/div. v in 10v/div. v out 500mv/div. v sw 10v/div. i inductor 10a/div. v pg 5v/div. v in 5v/div. v out 500mv/div. v sw 10v/div. i inductor 10a/div. v pg 5v/div. v en 5v/div. v out 500mv/div. v sw 10v/div. i inductor 10a/div. v in 5v/div. v out 500mv/div. v sw 5v/div. i inductor 2a/div. start-up through v in i out =0a, pfm start-up through v in i out =0a, pwm start-up through v in i out =10a shutdown through v in i out =0a, pwm shutdown through v in i out =0a, pfm shutdown through v in i out =10a start-up through en i out =0a, pfm start-up through en i out =0a, pwm start-up through en i out =10a
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 4 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the EV8758H-L-00A. v in =12v, v out =1.2v, l=1.2h, t j =+25c, unless otherwise noted. v pg 5v/div. v en 5v/div. v out 500mv/div. v sw 10v/div. i inductor 10a/div. v in 5v/div. v out /ac 50mv/div. v sw 5v/div. i inductor 2a/div. v in 5v/div. v out /ac 20mv/div. v sw 5v/div. i inductor 2a/div. v in 5v/div. v out /ac 20mv/div. v sw 5v/div. i inductor 10a/div. v out 50mv/div. i out 5a/div. v in 10v/div. v out 500mv/div. v sw 5v/div. i inductor 10a/div. v in 10v/div. v out 500mv/div. v sw 5v/div. i inductor 10a/div. v pg 5v/div. v en 5v/div. v out 500mv/div. v sw 10v/div. i inductor 10a/div. v en 5v/div. v out 500mv/div. v sw 5v/div. i inductor 2a/div. shutdown through en i out =0a, pfm shutdown through en i out =0a, pwm shutdown through en i out =10a output voltage ripple i out =0a, pwm output voltage ripple i out =0a, pfm output voltage ripple i out =10a load transient response i out =5a to 10a short-circuit entry i out =10a short-circuit recovery i out =10a
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 5 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the EV8758H-L-00A. v in =12v, v out =1.2v, l=1.2h, t j =+25c, unless otherwise noted. v pg 5v/div. v out 1v/div. v sw 5v/div. i inductor 5a/div. v pg 5v/div. v out 1v/div. v sw 5v/div. i inductor 5a/div. output ovp entry i out =0a, pfm output ovp recovery i out =0a, pfm
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 6 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. printed circuit board layout figure 1: top silk layer figure 2: top layer figure 3: inner layer1 figure 4: inner layer2
EV8758H-L-00A ? 10a, 22v, synchronous buck converter EV8758H-L-00A rev. 1.0 www.monolithicpower.com 7 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. figure 5: bottom layer
EV8758H-L-00A ? 10a, 22v, synchronous buck converter notice: the information in this document is subject to change without notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. EV8758H-L-00A rev.1.0 www.monolithicpower.com 8 1/14/2016 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. quick start guide 1. connect the positive and negative terminals of the load to the vout and gnd pins respectively. 2. preset the output of power supply between 4.5v and 22v, and then turn off the power supply. 3. connect the positive and negative terminals of the power supply output to the vin and gnd pins respectively: 4. turn the power supply on. the mp8758hgl will automatically start up. 5. to use the enable function, apply a digital input to the en pin. drive en high to turn on the regulator or low to turn it off 6. use r1 and r2 to set the output voltage. follow the application information section in the device datasheet to select the proper value of r1, r2, inductor and output capacitor values when output voltage is changed.
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