MPS EV7747DQ-00A Quick Start Manual

The Future of Analog IC Technology
DESCRIPTION
The EV7747DQ-00A is the evaluation board for
the MP7747, a 20W mono Class D Audio
Amplifier. It is one of MPS' products of fully
integrated audio amplifiers which dramatically
reduce solution size by integrating the following:
•
250mΩ power MOSFETs
•
Startup / Shutdown pop elimination
•
Short circuit protection circuits
The MP7747 utilizes a single ended output
structure capable of delivering 20W into 4Ω
speakers. MPS Class D Audio Amplifiers exhibit
the high fidelity of a Class A/B amplifier at high
efficiency. The circuit is based on the MPS'
TM
AAM proprietary variable frequency topology
that delivers excellent linearity, fast response
time and operates on a single power supply.
ELECTRICAL SPECIFICATIONS
Parameter Symbol
Supply Voltage
EV7747DQ-00A EVALUATION BOARD
(L x W x H) 3.5" x 2.5" x 1.2"
9.0cm x 6.3cm x 3.0cm
Board Number
EV7747DQ-00A
EV7747DQ-00A Rev. 1.0
1/5/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Value Units
V 9.5~36 V
DD
MPS IC Number
MP7747DQ
www.MonolithicPower.com
© 2011 MPS. All Rights Reserved.
EV7747DQ-00A
2x20W Stereo Single Ended Class D
Audio Amplifier Evaluation Board
FEATURES
•
2 x 20W Output at V
•
THD+N = 0.02% at 1W, 8Ω, 1kHz
•
91% Efficiency at 20W and V
4Ω load
•
Low Noise (103µV Typical)
•
9.5V to 36V Operation from a Single Supply
APPLICATIONS
•
Flat Panel TV
•
Portable Docking Stations
•
Surround Sound DVD Systems
•
Televisions
•
Multimedia Computers
•
Home Stereo Systems
"MPS" and "The Future of Analog IC Technology" are Registered Trademarks of
Monolithic Power Systems, Inc.
AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power
Systems, Inc.
THD+N vs. P
V =24V, Freq=1kHz
DD
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
60m 100m
= 24V into a 4Ω load
DD
=24V with
DD
OUT
1 10 35
P (W)
OUT
1