Apogee DDX-2050 Manual

FEATURES
•
HIGH OUTPUT CAPABILITY
• 2 x 30W into 8Ω or 1 x 60W into 4 Ω
@ <1% THD
•
SINGLE SUPPLY (+9V to +30V)
•
COMPACT SURFACE MOUNT PACKAGE
•
HIGH EFFICIENCY, >88%
•
THERMAL OVERLOAD AND SHORT
CIRCUIT PROTECTION
BENEFITS
•
COMPLETE SURFACE MOUNT DESIGN
•
POWER SUPPLY SAVINGS
APPLICATIONS
•
DIGITAL POWERED SPEAKERS
•
PC SOUND CARDS
•
CAR AUDIO
•
SURROUND SOUND SYSTEMS
•
DIGITAL AUDIO COMPONENTS
INLA
BIAS
CONFIG
PWRDN
FAULT
TRISTATE
TWARN
GNDREF
INLB
INRA
VSIG
VREG2
VREG2
VREG1
VREG1
GNDR1
INRB
129 Morgan Drive, Norwood, MA 02062
CONTROLLED DOCUMENT:
All-Digital High Efficiency Power Amplifier
PROTECTION
AND
DRIVER
LOGIC
REGULATORS
Figure 1. Block Diagram
Specifications are subject to change without notice.
voice: (781) 551-9450
DRN: PRELIMINARY
GENERAL DESCRIPTION
The DDX-2050 power device is a monolithic dual
channel H-Bridge that can provide up to 30 watts
per channel of audio power at very high
efficiency. The DDX-2050 power device
contains a logic interface, integrated bridge
drivers, high efficiency
transistors and protection circuitry. The device
may be used as a dual bridge or reconfigured as
a single bridge with double the output current
capability.
The benefits of the DDX amplification system are
an all-digital design that eliminates the need for a
digital to analog converter (DAC) and the high
efficiency operation derived from the use of
Apogee's patented damped ternary pulse width
modulation (PWM). This approach provides an
efficiency advantage over conventional Class-D
designs and up to three times the efficiency of
typical Class A/B amplifiers with music input
signals.
FET
DRIVE
FET
DRIVE
FET
DRIVE
FET
DRIVE
fax: (781) 440-9528
DDX-2050
MOSFET output
VCC1P
OUTPL
OUTPL
PGND1P
VCC1N
OUTNL
OUTNL
PGND1N
VCC2P
OUTPR
OUTPR
PGND2P
VCC2N
OUTNR
OUTNR
PGND2N
email: apogee@apogeeddx.com
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