MPS EV8042DF-00B User manual

EV8042DF-00B
High Current, Dual Channel
Power Half-Bridge Evaluation Board
EV8042-00B Rev. 1.0 www.MonolithicPower.com 1
6/8/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
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GENERAL DESCRIPTION
The EV8042DF-00B 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 VDD 7.5 – 24 V
Peak Output Current IPEAK 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
•4µA 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 Trademarks of Monolithic
Power Systems, Inc.
EV8042DF-00B EVALUATION BOARD
(L x W x H) 4.0” x 3.5” x 1.0”
(10.2cm x 8.9cm x 2.5cm)
Board Number MPS IC Number
EV8042DF-00B MP8042DF

EV8042DF-00B – HIGH CURRENT, DUAL CHANNEL POWER HALF-BRIDGE
EVALUATION BOARD
EV8042-00B Rev. 1.0 www.MonolithicPower.com 2
6/8/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
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
GND
PWM2
NC
GND
STDBY
GND
GND
SHDWN
NC
FAULT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
VCC
PULL-UP
VDD
CN1
CN2
OUT1
OUT2
GND
GND
GND
GND PWM1
STDBY
SHDWN
FAULT
VCC
+
VCC
D4
D5
D7
D6
D2
1N4148
D1
4.7V
D3
1N4148
C2
390pF
SW2
SW1
BST1
BST2
OUT1
OUT2
C13
390pF
EV8042DF-00B BILL OF MATERIALS
Qty Ref Value Description Package Manufacturer Manufacturer P/N
C1 2200µF Electrolytic Cap.,35V, NHG Radial Panasonic ECA-1VHG222
C2, C13 390pF Ceramic Cap., 50V, X7R SM0805 Panasonic ECU-V1H391KBN
C3, C4 1µF Ceramic Cap., 50V, X7R 1210 TDK C3225X7R1H105K
C5, C6 0.1µF Ceramic Cap., 50V, X7R 0805 TDK C2012X7R1H104K
C7, C8 0.1µF Ceramic Cap., 25V, X5R 1206 Panasonic ECJ-3VB1E104K
C9, C11 0.47µF Film Cap., 50V, V-Series Radial Panasonic ECQ-V1H474JL
C10 1µF Film Cap., 63V, V-Series Radial Panasonic ECQ-V1J105JM
C12 0.1µF Ceramic Cap., 16V, X7R 0603 TDK C1608X7R1C104K
R1 4.7kFilm Res., 5% 0603 Panasonic ERJ-3GEYJ472V
R2, R3, R4 100kFilm Res., 5% 0603 Panasonic ERJ-3GEYJ104V
R5, R6 10Ceramic Res., 5% SM0805 Panasonic ERJ-6GEYJ100V
D1 Diode Zener, 4.7V, 200mW SOD-323 Diodes Inc. BZT52C4V7S-7
D2, D3 Diode Switch, 75V, 200mW SOD-323 Diodes Inc. 1N4148WS-7
D4, D5,
D6, D7
Diode Schottky, 30V, 1A SMB IR MBRS130LTR
L1, L2 10µH Power Inductor, 7A Radial Toko 16RHBP-100M
CN1, CN2 Banana Jacks, Red and Black
U1 Class D Audio Amplifier TSSOP-20 MPS MP8042DF

EV8042DF-00B – HIGH CURRENT, DUAL CHANNEL POWER HALF-BRIDGE
EVALUATION BOARD
EV8042-00B Rev. 1.0 www.MonolithicPower.com 3
6/8/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer Figure 2—Top Layer
Figure 3—Bottom Silk Layer Figure 4—Bottom Layer

EV8042DF-00B – HIGH CURRENT, DUAL CHANNEL POWER HALF-BRIDGE
EVALUATION BOARD
EV8042-00B Rev. 1.0 www.MonolithicPower.com 4
6/8/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
QUICK START GUIDE
The EV8042DF-00B 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.
2. Stereo PWM Signal Source.
3. Two Speaker Loads: 4or 8each.
Setup Condition for Operation
4. Remove C10 and connect the speakers as shown in Figure 5.
5. 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.
6. Apply power to the board.
7. Audio should be heard through the speakers.

EV8042DF-00B – HIGH CURRENT, DUAL CHANNEL POWER HALF-BRIDGE
EVALUATION BOARD
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.
EV8042-00B Rev. 1.0 www.MonolithicPower.com 5
6/8/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
EV8042DF-00B
PWM1
GND
PWM2
PWM AUDIO
SIGNAL
SPK_OUT1
SPK_OUT2
V
DD
V
DD
LEFT PWM
RIGHT PWM
Figure 5—Setup for Single-Ended Operation