ev 1400 - c - 0 1 a 7v input, 0.6 a, 1.5m hz negative power convertor evaluation board ev14 00 - c - 0 1 a rev. 1. 0 www.monolithicpower.com 1 9/25/2013 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2013 mps . all rights reserved. description the ev1400 - c - 0 1 a demonstrat es mpss mp 1400 , a monolithic negative dcdc power converter with built - in internal power mosfet . it offers a very compact solution to achieve up to 6 00m a continuous output current depending on input - voltage to output - voltage ratio. the output vo ltage can be regulated from - 0. 9 v to - 6v . the 1500 khz switching frequency allows for smaller external components producing a compact solution for a wide range of load currents . fault condition protection includes cycle - by - c ycle current limiting and thermal shutdown. t he mp 1400 is available in a 0.8mm x 1.6 mm 8 - ball csp package. electrical specifica tion parameter symbol value units input voltage v in 2.7 C 7 v output voltage v out - 5 v output current i out 0.6 a features ? w ide 2.7 v to 7 v operating input range ? output adjustable from - 0. 9 v to - 6v ? up to 600m a output current ? 300 m? high side mosfet on resistance ? default 1.5 mhz switching frequency ? ground reference enable ? cycle - by - cycle over current protection ? short circuit protect with hiccup mode ? output voltage discharge ? output over voltage protection ? available in a 0.8mm x 1.6mm 8 - ball csp package applications ? general negative voltage ? hdd ? small oled panel all mps parts are lead - free and adhere to the rohs directive. for mps green status, please visit mps website under quality assurance . mps and the future of analog ic technolog y , are registered trademarks of monolithic power systems, inc. ev 1400 - j - 01a evaluation board board number mps ic number ev 1400 - c - 0 1 a mp 1400 gc
ev 1400 - c - 0 1 a C 7 v, 1.5m h z , 0.6 a, buck - boost converter ev14 00 - c - 0 1 a rev. 1. 0 www.monolithicpower.com 2 9/25/2013 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2013 mps . all rights reserved. evaluation board sch ematic ev 1400 - j - 00a bill of m aterials qty refdes value d escription package manufacturer manufacturer p/n 1 c1 a 10 f ceramic cap., 16 v , x 7 r 1206 murata grm31cr71c106kac7l 3 c1 b , c 1c, c3 ns 3 c2 a , c2 b,c2c 22f ceramic cap., 10v, x 5 r 12 10 murata grm32er61c226ke20l 1 r1 105 k thick film res., 1% 0603 roya l rl0603fr - 07105kl 1 r2 24.9 k thick film res., 1% 0603 royal rl0603fr - 0724k9l 1 r3 100k thick film res., 5 % 0603 royal rl0603fr - 07100kl 1 r4 1 0 ? thick film res. , 1 % 0603 royal rl0603fr - 0710rl d1 schottky 2a30v sod - 123 onsemi mbr230lsft1 1 l1 4 . 7 h inductor, dcr= 35 m ? , is= 3.9 a smd wurth 744 77 89 004 1 u1 mp 1400 - c buck - boost convert csp_ 0.8mm*1.6mm mps mp 1400 gc mp 1400 105 k 24 . 9 k 4 . 7 uh en ref vout 10 uf en in sw gnd fb vout vin gnd d 1 16 v mbr 230 r 3 100 k c 1 b r 1 r 2 22 uf 16 v c 2 a l 1 gnd gnd gnd 22 uf 16 v c 2 b 22 uf 16 v c 2 c 10 r 4 c 1 a ns c 3 ns c 1 c ns
ev 1400 - c - 0 1 a C 7 v, 1.5m h z , 0.6 a, buck - boost converter ev14 00 - c - 0 1 a rev. 1. 0 www.monolithicpower.com 3 9/25/2013 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2013 mps . all rights reserved. evb test results performance waveforms are tested on the evaluation board. v in = 5 v , v out = - 5 v, l = 4.7 h, t a = 25 c, unless otherwise no ted.
ev 1400 - c - 0 1 a C 7 v, 1.5m h z , 0.6 a, buck - boost converter ev14 00 - c - 0 1 a rev. 1. 0 www.monolithicpower.com 4 9/25/2013 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2013 mps . all rights reserved. printed circuit boar d layout figure 1 top silk layer figure 2 top silk layer fi gure 3 bottom layer figure 4 bottom silk layer
ev 1400 - c - 0 1 a C 7 v, 1.5m h z , 0.6 a, buck - boost 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 i ntellectual p roperty r ights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for an y said applications. ev1400 - c - 0 1 a rev. 1.0 www.monolithicpower.com 5 9/25/2013 mps proprietary information. patent protected . unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reser ved. quick start guide 1. connect the positive and negative terminals of th e load to the vout and gnd pins, respectively . 2. preset the power s upply output between 2.7 v and 7 v , and then turn off the power supply . 3. co nnect the positive and negative terminals of the power supply output to the vin and gnd pins, respectively. 4. turn the po wer supply on. the board will automatically start up.
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