evq4560-n-00a 2a, 55v, 2mhz step-down converter evaluation board evq4560n00a rev. 1.0 www.monolithicpower.com 1 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. the future of analog ic technology description the evq4560n00a is an evaluation board for the mpq4560, a high frequency stepdown regulator with an integrated power mosfet. the mp4560 integrates a 250m mosfet that provides 2a load current over a wide operating input voltage of 4.5v to 55v. current mode control provides fast transient response and eases loop stabilization. an internal softstart prevents inrush current at turnon. the evq4560n00a is a fully assembled and tested pcb. it generates a +5v output voltage at load current up to 2a from an 8v to 55v input range. switching frequency is set at 700khz. electrical specifications parameter symbol value units input voltage v in 8 C 55 v output voltage v out 5 v output current i out 2 a features ? 2a output current ? programmable switching frequency up to 2mhz ? wide 8v to 55v operating input range ? adjustable output from 0.8v ? fully assembled and tested applications ? high voltage power conversion ? game machines ? automotive systems ? industrial power systems ? distributed power systems ? printer systems ? battery powered systems all mps parts are lead free and adhere to the rohs directive. for mps green status, please visit mps website under quality assu rance. mps and the future of analog ic technology are registered trademarks of monolithic power systems, inc. evq4560-n-00a evaluation board (l x w x h) 3.5 x 2.5 x 0.4 (8.8cm x 6.4cm x 1.0cm) board number mps ic number evq4560n00a MPQ4560DN 0 10 20 30 40 50 60 70 80 90 100 1 100 10000
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board evq4560n00a rev. 1.0 www.monolithicpower.com 2 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evaluation board schematic 22nf c1 2.2f c2 22f c4 2.2f c3 0.1f c7 100k r1 gnd 5 sw fb 4 bst 8 freq 6 vin 7 en 2 comp 3 u1 mpq4560 d2 ns c11 22f c15 ns c14 22nf c8 23.7k r6 124k r8 47.5k r5 330pf c10 2.2f c5 2.2f c6 gnd gnd gnd gnd gnd gnd 0.1f c9 0 r4 gnd ns r7 gnd gnd ns c12 gnd ns c13 gnd gnd 16v fb1 fb2 d1 vin vin ns c16 22nf c17 100pf c19 22nf c18 22nf c20 ns c22 0.1f c21 ns c23 0.1f c24 ns c25 100v 100v 63v 100v vin en vout gnd 10h l1 22h l2 34k r2 127k r3 evq4560-n-00a bill of materials qty refdes value description package manufacturer manufactuer_p/n 2 c1, c17 22nf ceramic capacitor; 100v; x7r; 0805 0805 tdk c2012x7r2a223k 4 c2, c3, c5, c6 2.2f ceramic capacitor; 100v; x7r; 1210 1210 tdk c3225x7r2a225k 1 c4 22f electrolytic capacitor; 63v; 6.3mmx7.7mm(h) smd jianghai vtd63v22 2 c7, c9 0.1f ceramic capacitor; 100v; x7r; 0603 0603 murata grm188r72a104ka 35d 1 c8 22nf ceramic capacitor; 50v; x7r; 0805 0805 tdk c2012x7r1h223k 1 c10 330pf ceramic capacitor; 50v; x7r; 0603 0603 tdk c1608x7r1h331k 1 c15 22f ceramic capacitor; 16v; x7r; 1210 1210 tdk c3235x7r1c226m 1 c18 22nf ceramic capacitor; 100v; x7r; 0603 0603 tdk c1608x7r2a223k 1 c19 100pf ceramic capacitor; 100v; c0g; 0603 0603 tdk c1608c0g2a101j 1 c20 22nf ceramic capacitor; 50v; x7r; 0603 0603 tdk c1608x7r1h223k 2 c21, c24 0.1f ceramic capacitor; 100v; x7r; 0805 0805 tdk c2012x7r2a104k 2 c11, c25 ns 0805 4 c12, c13, c16, c22 ns 0603 2 c14, c23 ns 1210 1 d1 ns smb 1 d2 b260a diode schottky; 60v; 2a sma diodes b260a 5 en, gnd1, gnd2, vin, vout 2.0 golden pin hz
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board evq4560n00a rev. 1.0 www.monolithicpower.com 3 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evq4560-n-00a bill of materials (continued) qty refdes value description package manufacturer m anufactuer_p/n 2 fb1, fb2 magnetic bead; 6a 1206 murata blm31pg330sh1l 1 l1 10h inductor; 2.4a smd toko ds85lcbb1135as 100m 1 l2 22h inductor; 3a smd toko d104c919as220m 1 r1 100k film resistor; 1% 0603 yageo rc0603fr071 00kl 1 r2 34k film resistor; 1% 0603 yageo rc0603fr0734 kl 1 r3 127k film resistor; 1% 0603 yageo rc0603fr071 27kl 1 r4 0 film resistor; 5% 0603 yageo rc0603jr070rl 1 r5 47.5k film resistor; 1% 0603 yageo rc0603fr07 47k5l 1 r6 23.7k film resistor; 1% 0603 yageo rc0603fr07 23k7l 1 r7 ns 0603 1 r8 124k film resistor; 1% 0603 yageo rc0603fr071 24kl 1 u1 MPQ4560DN stepdown regulator so8/ep mps mpq45 60dn
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board evq4560n00a rev. 1.0 www.monolithicpower.com 4 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results performance waveforms are tested on the evaluation board. v in = 12v, v out = 5v, t a = 25c, unless otherwise noted. v sw 5v/div. v sw 5v/div. v out (ac) 10mv/div. v out (ac) 10mv/div. i l 20ma/div. i l 500ma/div. v ou t 2v/div. v sw 5v/div. v in 5v/div. i l 200ma/div. v ou t 2v/div. v sw 5v/div. v in 5v/div. i l 1a/div. v ou t 2v/div. v sw 5v/div. v in 5v/div. i l 50ma/div. v ou t 2v/div. v sw 5v/div. v in 5v/div. i l 1a/div. v ou t 2v/div. v sw 5v/div. v en 2v/div. i l 200ma/div. v ou t 2v/div. v sw 10v/div. v en 2v/div. i l 1a/div. v ou t 2v/div. v sw 5v/div. v en 2v/div. i l 50ma/div.
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board evq4560n00a rev. 1.0 www.monolithicpower.com 5 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the evaluation board. v in = 12v, v out = 5v, t a = 25c, unless otherwise noted. v en 2v/div. v out 2v/div. v sw 5v/div. i l 1a/div. v out (ac) 200mv/div. i l 500ma/div. v ou t 2v/div. v sw 5v/div. i l 2a/div. v ou t 2v/div. v sw 5v/div. i l 500ma/div. v ou t 2v/div. v sw 5v/div. i l 2a/div. 100 9080 70 60 50 40 30 20 10 0 150k 10m 1m 30m 80.0 -20.0 -10.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 1000 30 40 70 100 200 300 500 150k 10m 1m 30m 100 9080 70 60 50 40 30 20 10 0 en55022 - qp en55022 en55022 - av
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board evq4560n00a rev. 1.0 www.monolithicpower.com 6 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. printed circuit board layout figure 1top silk layer figure 2top layer figure 1inner1 layer figure 2inner2 layer figure 3bottom layer
evq4560-n-00a C 2a, 55v, 2mhz step-down converter e valuation board notice: the information in this document is subject to cha nge without notice. users should warrant and guaran tee that third party intellectual property rights are not infringe d upon when integrating mps products into any appli cation. mps will not assume any legal responsibility for any said applic ations. evq4560n00a rev. 1.0 www.monolithicpower.com 7 1/22/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. quick start guide 1. connect the positive and negative terminals of t he load to the vout and gnd pins, respectively. 2. preset the power supply output to between 8 and 55v, and then turn it off. 3. connect the positive and negative terminals of t he power supply output to the vin and gnd pins, respectively. 4. turn the power supply on. the MPQ4560DN will aut omatically startup. 5. to use the enable function, apply a digital inpu t to the en pin. drive en higher than 1.55v to turn on the regulator, drive en less than 1.23v to turn it off. 6. an input under voltage lockout (uvlo) function i s implemented by the addition of a resistor divider r1 and r2. the en threshold is 1.23v (falli ng edge), so v in uvlo threshold is r1 1.23v 1 r2 ? ? + ? ? ? ? . it is preset to around 3.8v on this board. 7. use r6 and r8 to set the output voltage with v fb = 0.8v. for r6 = 23.7k, r8 can be determined by: ( ) out r8 29.625 v 0.8 = ? (k). follow the application information section in the device datasheet to recalculate the compensation, i nductor and output capacitor values when output voltage is changed.
|
