ev2364df/1541dj-00a 4 output dsl power supply evaluation board ? initial release ev2364df/1541dj-00a rev. 1.0 www.monolithicpower.com 1 6/9/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. the future of analog ic technology tm tm general description the ev2364/1541-00a is an evaluation board for dsl power applications. it has four outputs and can supply 1.5a continuous output current over a wide input supply range with excellent load and line regulation. current mode operation provides fast transient response and eases loop stabilization. fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. electrical specifications parameter symbol value units input voltage v in 5 ? 23 v output voltage a v outa 3.3 v output current a i outa 1.5 a output voltage b v outb 1.8 v output current b i outb 1.5 a output voltage c v outc 12.8 v output current c i outc 100 ma output voltage d v outd 5 v output current d i outd 100 ma features ? 1.5a current for 3.3v and 1.8v outputs ? ceramic input and output capacitors ? high efficiency ? fixed operating frequency ? wide 5v to 23v operating input range ? adjustable output ? programmable under voltage lockout ? programmable soft-start applications ? distributed power systems ? i/o and core supplies ? dsl modems ? set top boxes ? cable modems ?mps? and ?the future of analog ic technology? are trademarks of monolithic power systems, inc. ev2364df/1541dj-00a evaluation board dimensions (2.6?x x 2.6?y x 0.4?z) board number mps ic number ev2364df/1541dj-00a mp2364df and mp1541dj
ev2364df/1541dj-00a ? 4 output dsl power supply evaluation board ? initial release ev2364df/1541dj-00a rev. 1.0 www.monolithicpower.com 2 6/9/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm performance curves 100 90 80 70 60 50 efficiency (%) 0 0.25 0.5 0.75 1.0 1.25 1.5 load current (a) efficiency vs load current v out =3.3v v out =12.8v v out =1.8v 100 90 80 70 60 50 efficiency (%) 0 20406080100 load current (ma) ev2364_1541_ec01-02 efficiency vs load current evaluation board schematic mp2364 ssa nc1 bsa ina swa pga sga fbb compb enb ena comp gba sgb pgb swb inb nc2 bsb ssb lm7805ct u3 in gnd out mp1541 sw in fb en gnd c2 10nf d2 b230a-13 c4 ns c5 3.3nf c17 10pf enb voutd 5v @ 100ma vouta 3.3v @ 1.5a gndd ena u1 vin 12v gnd c8 2.2nf c7 10nf d3 b230a-13 c18 82pf c10 ns voutb 1.8v @ 1.5a gndb voutc 12.8v @ 100ma gndc u2 d5 mbr0520 c13 100pf ev2364_1542_s01 enc gnda
ev2364df/1541dj-00a ? 4 output dsl power supply evaluation board ? initial release ev2364df/1541dj-00a rev. 1.0 www.monolithicpower.com 3 6/9/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm ev2364df/1541dj-00a bill of materials qty ref value description package manufacturer part no. distributor part no. 2 c1, c6 0.47f ceramic capacitor, 16v, x7r 0805 tdk: c2012x7r1c474k digikey: 445-1357-1-nd 2 c2, c7 10nf ceramic capacitor, 50v, x7r 0603 tdk: c1608x7r1h103k digikey: 445-1311-1-nd 2 c3, c9 22f ceramic capacitor, 6.3v, x5r 1210 tdk: c3225x5r0j226m digikey: 445-1404-1-nd 2 c4, c10 not used 1 c5 3.3nf ceramic capacitor, 50v, x7r 0603 panasonic: ecj-1vb1h332k digikey: pcc1778ct-nd 1 c8 2.2nf ceramic capacitor, 50v, x7r 0603 tdk: c1608x7r1h222k digikey: 445-1309-1-nd 2 c11, c12 10f ceramic capacitor, 25v, x7r 1210 tdk: c3225x7r1e106m digikey: 445-1434-1-nd 1 c13 100pf ceramic capacitor, 50v, c0g 0603 tdk: c1608c0g1h101j digikey: 445-1281-1-nd 1 c14 10f ceramic capacitor, 10v, x5r 1210 panasonic: ecj-4yb1a106k digikey: pcc2170ct-nd 1 c15 4.7f ceramic capacitor, 16v, x5r 1210 panasonic: ecj-4yb1c475k digikey: pcc2168tr-nd 1 c16 47f ceramic capacitor, 6.3v, x5r 1210 murata: grm32er60j476me20l digikey: 490-1887-1-nd 1 c17 10pf ceramic capacitor, 50v, x5r 0603 murata: grm1885c1h100ja01d digikey: 490-1403-1-nd 1 c18 82pf ceramic capacitor, 50v, x5r 0603 murata: grm1885c1h820ja01d digikey: 490-1425-2-nd 1 c19 1f ceramic capacitor, 25v, x5r 1210 murata: grm31c5c1e104ja01l digikey: 490-1767-2-nd 2 d2, d3 schottky diode, 30v, 2a, sma diodes inc: b230a-13 digikey: b230adict-nd 1 d5 schottky diode, 20v, 0.5a sod-123 on semiconductor: mbr0520lt1 digikey: mbr0520lt1osct-nd 2 l1, l2 5h 2.4a, smd, unshielded sumida: cdrh6d28-5r0 1 l3 10h 1.7a sumida: cdrh6d28-100nc 1 r1 25.5k ? metal film resistor, 1% 0603 panasonic: erj-3ekf2552v digikey: p25.5khct-nd 1 r2 7.5k ? metal film resistor, 5% 0603 panasonic: erj-3geyj752v digikey: p7.5kgct-nd 4 r3, r5, r6, r11 10k ? metal film resistor, 1% 0603 panasonic: erj-3ekf1002v digikey: p10.0khct-nd 1 r4 9.53k ? metal film resistor, 1% 0603 panasonic: erj-3ekf9531v digikey: p9.53khct-nd 2 r7, r9 100k ? resistor, 1% 0603 panasonic: erj-3ekf1003v digikey: p100khct-nd
ev2364df/1541dj-00a ? 4 output dsl power supply evaluation board ? initial release ev2364df/1541dj-00a rev. 1.0 www.monolithicpower.com 4 6/9/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm ev2364df/1541dj-00a bill of materials (continued) qty ref value description package manufacturer part no. distributor part no. 1 r8 110k ? resistor, 1% 0603 panasonic: erj-3ekf1103v digikey: p110khdkr-nd 1 r10 11.8k ? resistor, 1% 0603 panasonic: erj-3ekf1182v digikey: p11.8khct-nd 2 r12, r13 0 ? resistor, 5% 0603 panasonic: erj-3gey0r00v digikey: p0.0gtr-nd 1 u1 dc/dc controller tssop20 mps: mp2364df 1 u2 1.3mhz boost converter sot23-5 mps: mp1541 1 u3 5 volt regulator national semi: lm7805ct printed circuit board layout figure 1?top silk layer figure 2?top layer
ev2364df/1541dj-00a ? 4 output dsl power supply evaluation board ? initial release notice: the information in this document is subject to change wi thout notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev2364df/1541dj-00a rev. 1.0 www.monolithicpower.com 5 6/9/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm figure 3?bottom layer quick start guide the output voltages of this board are set to 3.3v (vouta), 1.8v (voutb), 12.8v (voutc) and 5v (voutd). the board layout accommodates most commonly used inductors and output capacitors. 1. attach the positive and negative ends of the first load to the vouta and gnd pins, respectively. if using other outputs, attach the positive and negative ends of their loads to the respective vout and gnd pins for the desired outputs. 2. preset the power supply output to 5v to 23v and turn it off. 3. connect the positive terminal of the power supply output to the vin pin and the negative terminal of the to the gnd pin. 4. turn on the power supply. the ev2364df/1541dj will automatically startup. 5. to use the enable function, apply a digital input to the ena/enb pins. drive en higher than 2.5v to turn on the regulator and less than 0.7v to turn it off.
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