EV8042DF-00C high current, dual channel power half-bridge evaluation board ev8042-00c rev. 1.0 www.monolithicpower.com 1 7/26/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. the future of analog ic technology general description the EV8042DF-00C is the evaluation board for the mp8042, a high current, dual channel power half-bridge. it accepts pwm modulated inputs for operation. the mp8042 features a low current shutdown mode, standby mode, input under voltage protection, thermal shutdown and fault flag signal output. each channel can be driven independently as stereo single-ended audio amplifiers, or driven complementary in a bridge- tied load (btl) audio amplifier configuration. both channels of the driver interface with standard logic signals. the mp8042 is available in a 20-pin tssop (with exposed pad) package. electrical specifications parameter symbol value units supply voltage v dd 7.5 ? 24 v peak output current i peak 5 a features ? 5a peak current output ? up to 600khz switching frequency ? protected integrated power 150m ? switches ? 30ns switch dead time ? all switches current limited ? under voltage protection ? thermal protection ? 4 a quiescent current at shutdown ? fault output flag ? stereo single-ended: 20w/channel, 4 ? load ? bridge tied-load output power: 40w, 8 ? load applications ? class d audio drivers ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. EV8042DF-00C evaluation board (l x w x h) 4.1? x 3.6? x 1.1? (10.2cm x 9.0cm x 2.8cm) board number mps ic number EV8042DF-00C mp8042df
EV8042DF-00C ? high current, dual channel power half-bridge ev8042-00c rev. 1.0 www.monolithicpower.com 2 7/26/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. evaluation board schematic mp8042 u1 nc agnd1 pwm1 stby pwm2 fault shdwn agnd2 nc vdr2 vdr1 bst1 pgnd1 out1 vdd1 nc vdd2 out2 pgnd2 bst2 pwm1 1 gnd pwm2 nc gnd stdby nc gnd shdwn nc fault 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 vdd vdd vdd pull-up vdd cn1 cn2 spk_out1 spk_out2 gnd gnd gnd pwm2 stdby shdwn fault vdd + vdd d7 mbrs130ltr d6 50v mbrs130ltr d4 mbrs130ltr d5 mbrs130ltr d2 1n4148 d1 4.7v d3 1n4148 vdr2 pwm1 sw2 sw1 bst1 bst2 spk_out1 spk_out2 gnd vdr1 11 50v EV8042DF-00C bill of materials qty ref value description package manufacturer manufacturer p/n 1 c1 2200f electrolytic cap., 35v, nhg radial panasonic eca-1vhg222 2 c2, c13 390pf ceramic cap., 50v, x7r 0805 panasonic ecu-v1h391kbn 2 c3, c4 1f ceramic cap., 50v, x7r 1210 tdk c3225x7r1h105k 2 c5, c6 0.1f ceramic cap., 50v, x7r 0805 tdk c2012x7r1h104k 2 c7, c8 0.1f ceramic cap., 25v, x7r 1206 panasonic ecj-3vb1e104k 2 c9, c11 0.47f cap., 50v, stack metal film radial panasonic ecq-v1h474jl 1 c10 1f cap., 63v, stack metal film radial panasonic ecq-v1j105jm 1 c12 0.1f ceramic cap., 16v, x7r 0603 tdk c1608x7r1c104k 2 cn1 banana jacks, red and black 2 cn2 2 red banana jacks 1 d1 diode zener, 4.7v, 200mw sod-323 diodes inc. bzt52c4v7s-7 2 d2, d3 diode switch, 75v, 200mw sod-323 diodes inc. 1n4148ws-7 4 d4, d5, d6, d7 diode schottky, 30v, 1a smb ir mbrs130ltr 2 l1, l2 10h power inductor, 7a, 16rhbp radial toko 16rhbp-100m 1 r1 4.7k ? film res., 5% 0603 panasonic erj-3geyj472v 3 r2, r3, r4 100k ? film res., 5% 0603 panasonic erj-3geyj104v 2 r5, r6 10 ? ceramic res, 5% 0805 panasonic erj-6geyj100v 29 29-pins sip header, 0.1" keystone 5000 1 u1 class d audio amplifier tssop-20 mps mp8042df
EV8042DF-00C ? high current, dual channel power half-bridge ev8042-00c rev. 1.0 www.monolithicpower.com 3 7/26/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2? bottom silk layer
EV8042DF-00C ? high current, dual channel power half-bridge ev8042-00c rev. 1.0 www.monolithicpower.com 4 7/26/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. quick start guide the EV8042DF-00C comes pre-configured to operate as a btl (bridge-tied load) audio power driver, where a complementary pwm modulated audio signal (pwm and pwm ) is used an input, and music is played to a speaker connected to the output. for btl operation, follow the steps in the quick start guide for btl operation section. for single-ended operation, make modifications and follow the steps as described in the quick start guide for single-ended operation section. quick start guide for btl (bridge-tied load) operation input/output requirements 1. power supply: 7.5v to 24v. 2. complementary pwm signal source (pwm, pwm ). 3. speaker load: 4 ? or 8 ? . setup condition for operation 4. connect the speaker between spk_out1 and spk_out2 terminals. 5. connect a pwm signal source to pwm1 and the complementary signal source pwm to pwm2, respectively. use the gnd terminal between pwm1 and pwm2 as the ground connection for the pwm inputs. 6. apply power to the board. 7. audio should be heard through the speaker. quick start guide for se (single-ended) operation input/output requirements 1. power supply: 7.5v to 24v.stereo pwm signal source. 2. two speaker loads: 4 ? or 8 ? each. setup condition for operation 3. remove c10 and connect the speakers as shown in figure 3. 4. connect the stereo pwm signal source to the ev board. connect channel 1 to pwm1 and channel 2 to pwm2, respectively. use the gnd terminals between pwm1 and pwm2 as the ground connections for the pwm inputs. 5. apply power to the board. 6. audio should be heard through the speakers.
EV8042DF-00C ? high current, dual channel power half-bridge 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. ev8042-00c rev. 1.0 www.monolithicpower.com 5 7/26/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. EV8042DF-00C pwm1 gnd pwm2 pwm audio signal spk_out1 spk_out2 v dd v dd left pwm right pwm figure 3?setup for single-ended operation
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