MPS EV8042DF-00B Bedienungsanleitung

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.

The Future of Analog IC Technology

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.

EVALUATION BOARD SCHEMATIC

MP8042

AGND1

PWM1

STBY

PWM2

FAULT

SHDWN

AGND2

VDR2

VDR1

BST1

PGND1

OUT1

VDD1

VDD2

OUT2

PGND2

BST2

PWM1

GND

PWM2

GND

STDBY

GND

SHDWN

FAULT

VCC

PULL-UP

VDD

CN1

CN2

OUT1

OUT2

GND

GND PWM1

STDBY

SHDWN

FAULT

VCC

1N4148

4.7V

1N4148

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.

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.

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.

EV8042DF-00B

PWM1

GND

PWM2

PWM AUDIO

SIGNAL

SPK_OUT1

SPK_OUT2

LEFT PWM

RIGHT PWM

Figure 5—Setup for Single-Ended Operation

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