EV8048DQK-00A 22v, 4a quad channel power half-bridge evaluation board EV8048DQK-00A rev. 1.0 www.monolithicpower.com 1 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. the future of analog ic technology general description the EV8048DQK-00A is the evaluation board for the mp8048, a configurable dual channel full-bridge or quad channel half-bridge. the mp8048 features a low current shutdown mode, standby mode, input under voltage protection, current limit, thermal shutdown and fault flag signal output. each full-bridge can be driven independently as stereo single ended audio amplifiers, or driven complementary in a bridge tied load (btl) audio amplifier configuration. all channels of drivers interface with standard logic signals. electrical specifications parameter symbol value units supply voltage v dd 7.5 ? 22 v peak output current i peak 4 a features ? 4a peak current output ? up to 600khz switching frequency ? protected integrated power 200m ? switches ? 30ns switch dead time ? all switches current limited ? under voltage protection ? thermal protection ? 3.4ma operation current ? fault output flag ? single ended output power: 8w/channel, at 22v, 8 ? load ? bridge tied load output power: 30w/channel, at 22v, 8 ? load applications ? class d audio drivers ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. EV8048DQK-00A evaluation board (l x w x h) 4.0? x 3.3? x 1.0? (10.2cm x 8.4cm x 2.6cm) board number mps ic number EV8048DQK-00A mp8048dqk
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board EV8048DQK-00A rev. 1.0 www.monolithicpower.com 2 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. evaluation board schematic
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board 05/04, rev. 1.0 www.monolithicpower.com 3
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board EV8048DQK-00A rev. 1.0 www.monolithicpower.com 4 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. EV8048DQK-00A bill of materials qty ref value description package manufacturer manufacturer p/n 1 c6 0.1uf ceramic capacitor, 50v, x7r 0603 murata grm188r71h104ka93d 6 c11-16 0.1uf ceramic capacitor, 50v, x7r 0805 murata grm21br71h104ka01l 2 c3, c24, 1uf ceramic capacitor, 50v, x7r 1206 tdk c3216x7r1h105k 4 c7, c10, c18, c21 390pf ceramic capacitor, 50v, c0g 0603 murata grm1885c1h391ja01d 2 c8, c19 0.47uf cbb capacitor, 50v radial panasonic 4 c5, c9, c17, c20 0.22uf cbb capacitor, 50v radial panasonic 2 c1, c22 1000uf electrolytic cap, 35v radial rubycon 1 r1 4.7k ? film res., 1% 0603 yageo rc0603fr-074k7l 4 r2, r3, r7, r8 10 ? film res., 1% 0603 yageo rc0603fr-0710rl 3 r4, r5, r6 100k ? film res., 1% 0603 yageo rc0603fr-07100kl 4 l1, l2, l3, l4 22uh 3.29a radial toko 13rhbp-a7502by-220m 4 d6, d7, d8, d9 diode switch, 40v, 0.5a sod-123 diodes inc. b0540w 4 d1, d4, d10, d12 ns 4 d3, d5, d11, d13 diode schottky, 40v, 1a smb diodes inc. b140b 1 d2 diode zener, 4.7v, 200mw sod-323 diodes inc. bzt52c4v7s-7 2 fb1-2 ferrite bead, 6a 1206 lion pb321611-320 1 u1 class d audio amplifier mps mp8048dqk 25 25-pins sip header, 0.1" any 1 cn1 banana jacks, red and black any 2 cn2, cn3 pstz-2 any
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board EV8048DQK-00A rev. 1.0 www.monolithicpower.com 5 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. printed circuit board layout figure 1?top silk layer
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board 05/04, rev. 1.0 www.monolithicpower.com 6 figure 2? bottom silk layer
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board EV8048DQK-00A rev. 1.0 www.monolithicpower.com 7 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. quick start guide the EV8048DQK-00A comes pre-configured to operate as a stereo btl (bridge tied load) audio power driver, where a complementary pwm modulated audio signal (pwm and pwm ) is used for each channel, and the music is played to the 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 stereo btl (bridge-tied load) operation input/output requirements 1. power supply: 7.5v to 22v. 2. stereo complementary pwm signal source (pwm, pwm ). 3. speaker load: 8 ? . setup condition for operation 4. connect the speaker between spk_out1a and spk_out1b. similarly, connect the speaker between spk_out2a and spk_out2b, 5. connect the pwm signal source to pwm1a and the complementary signal source pwm to pwm1b, respectively. use the gnd terminal between pwm1a and pwm1b as the ground connection for the pwm inputs. similarly, connect the complementary pwm signal of the other channel to pwm2a and pwm2b. 6. apply power to the board. 7. audio should be heard through the speakers. quick start guide for se (single-ended) operation input/output requirements 1. power supply: 7.5v to 22v. 2. pwm signal source. 3. two speaker loads: 4 ? or 8 ? . setup condition for operation 4. take channel 1 (the full-bridge with output sw1a and sw1b) as an example. remove c8 and connect the speakers as shown in figure 3. 5. connect the stereo pwm signal source to pwm1a and pwm1b, respectively. use the gnd terminals between pwm1a and pwm1b as the ground connections for the pwm inputs. 6. apply power to the board. 7. audio should be heard through the speakers. 8. the operation for channel 2 (the full-bridge with output sw2a and sw2b) is same.
EV8048DQK-00A ? 22v, 4a quad chann el power half-bridge ev board notice: the information in this document is subject to change wi thout notice. please contact m ps 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. EV8048DQK-00A rev. 1.0 www.monolithicpower.com 8 12/14/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. EV8048DQK-00A pwm audio signal left pwm right pwm pwm1a pwm1b gnd spk_out1a spk_out1b 4 or 8 4 or 8 1000 f 25v 1000 f 25v 1000 f 25v 1000 f 25v 50k 50k 50k 50k v dd v dd figure 3?setup for single-ended operation (1 full-bridge only)
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