EV8042DF-00B – HIGH CURRENT, DUAL CHANNEL POWER HALF-BRIDGE
EVALUATION BOARD
EV8042-00B Rev. 1.0
www.MonolithicPower.com
4
6/8/2006
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© 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
Ω
or 8
Ω
.
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
Ω
or 8
Ω
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.