EV8048DQK-00A 22V, 4A Quad Channel Power Half-Bridge Evaluation Board The Future of Analog IC Technology GENERAL DESCRIPTION FEATURES 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 Supply Voltage Peak Output Current Symbol Value Units VDD IPEAK 7.5 – 22 4 V A ±4A Peak Current Output Up to 600kHz Switching Frequency Protected Integrated Power 200mΩ 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, 8Ω Load Bridge Tied Load Output Power: 30W/Channel, at 22V, 8Ω 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) EV8048DQK-00A Rev. 1.0 12/14/2009 Board Number MPS IC Number EV8048DQK-00A MP8048DQK www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 1 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD EVALUATION BOARD SCHEMATIC EV8048DQK-00A Rev. 1.0 12/14/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 2 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD 05/04, Rev. 1.0 www.MonolithicPower.com 3 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD EV8048DQK-00A BILL OF MATERIALS Qty Ref 1 C6 6 C11-16 2 C3, C24, Value Description Ceramic Capacitor, 50V, 0.1uF X7R Ceramic Capacitor, 50V, 0.1uF X7R Ceramic Capacitor, 50V, 1uF X7R Ceramic Capacitor, 50V, 390pF C0G 0.47uF CBB Capacitor, 50V C7, C10, C18, C21 2 C8, C19 C5, C9, 4 0.22uF CBB Capacitor, 50V C17, C20 2 C1, C22 1000uF Electrolytic Cap, 35V 1 R1 4.7kΩ Film Res., 1% R2, R3, 10Ω Film Res., 1% 4 R7, R8 3 R4, R5, R6 100kΩ Film Res., 1% L1, L2, L3, 4 22uH 3.29A L4 D6, D7, 4 Diode Switch, 40V, 0.5A D8, D9 D1, D4, 4 NS D10, D12 D3, D5, 4 Diode Schottky, 40V, 1A D11, D13 Diode Zener, 4.7V, 1 D2 200mW 2 FB1-2 Ferrite Bead, 6A 1 U1 Class D Audio Amplifier 25 25-Pins Sip Header, 0.1" Banana Jacks, Red and 1 CN1 Black 2 CN2, CN3 PSTZ-2 4 EV8048DQK-00A Rev. 1.0 12/14/2009 Package Manufacturer Manufacturer P/N 0603 muRata GRM188R71H104KA93D 0805 muRata GRM21BR71H104KA01L 1206 TDK 0603 muRata Radial Panasonic Radial Panasonic Radial 0603 Rubycon Yageo RC0603FR-074K7L 0603 Yageo RC0603FR-0710RL 0603 Yageo RC0603FR-07100KL Radial Toko SOD-123 Diodes Inc. B0540W SMB Diodes Inc. B140B SOD-323 Diodes Inc. BZT52C4V7S-7 1206 LION MPS any PB321611-320 MP8048DQK C3216X7R1H105K GRM1885C1H391JA01D 13RHBP-A7502BY-220M any any www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 4 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer EV8048DQK-00A Rev. 1.0 12/14/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 5 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD Figure 2— Bottom Silk Layer 05/04, Rev. 1.0 www.MonolithicPower.com 6 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD 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: 8Ω. 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: 4Ω or 8Ω. 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 Rev. 1.0 12/14/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 7 EV8048DQK-00A – 22V, 4A QUAD CHANNEL POWER HALF-BRIDGE EV BOARD VDD PWM1A SPK_OUT1A LEFT PWM PWM AUDIO SIGNAL GND 4 or 8 1000 F 25V 50k 1000 F 25V 50k EV8048DQK-00A VDD RIGHT PWM PWM1B SPK_OUT1B 4 or 8 1000 F 25V 50k 1000 F 25V 50k Figure 3—Setup for Single-Ended Operation (1 full-bridge only) 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 Intellectual Property rights are 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 12/14/2009 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 8