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Apogee Technology

DDX-2050 Datasheet Preview

DDX-2050 Datasheet

All-Digital High Efficiency Power Amplifier

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DDX-2050
All-Digital High Efficiency Power Amplifier
FEATURES
HIGH OUTPUT CAPABILITY
2 x 30W into 8or 1 x 60W into 4
@ <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
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 MOSFET output
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.
INLA
BIAS
CONFIG
PWRDN
FAULT
TRISTATE
TWARN
GNDREF
INLB
INRA
VSIG
VREG2
VREG2
VREG1
VREG1
GNDR1
INRB
PROTECTION
AND
DRIVER
LOGIC
FET
DRIVE
FET
DRIVE
REGULATORS
FET
DRIVE
FET
DRIVE
Figure 1. Block Diagram
VCC1P
OUTPL
OUTPL
PGND1P
VCC1N
OUTNL
OUTNL
PGND1N
VCC2P
OUTPR
OUTPR
PGND2P
VCC2N
OUTNR
OUTNR
PGND2N
Specifications are subject to change without notice.
129 Morgan Drive, Norwood, MA 02062 voice: (781) 551-9450 fax: (781) 440-9528 email: apogee@apogeeddx.com
CONTROLLED DOCUMENT:
DRN: PRELIMINARY
Page 1 of 13




Apogee Technology

DDX-2050 Datasheet Preview

DDX-2050 Datasheet

All-Digital High Efficiency Power Amplifier

No Preview Available !

DDX-2050
Absolute Maximum Ratings [Note 1]
SYMBOL
PARAMETER
VALUE
VCC
Power supply voltage
40V
VL Input logic reference
5.5V
Tj Operating junction temperature range
-40 to +150
Tstg Storage temperature range
-40 to +150
Note 1: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Recommended Operating Conditions [Note 2]
SYMBOL
PARAMETER
VCC
Power supply voltage [Note 3]
VL Input logic reference
TA Ambient Temperature
Note 2: Performance not guaranteed beyond recommended operating conditions.
Note 3: Overvoltage protection may preclude operation above 30V.
MIN
10.0
2.7
0
TYP
3.3
MAX
36.0
5.0
70
Thermal Data
SYMBOL
θJC
TjSD
Twarn
ThSD
PARAMETER
Thermal resistance junction-case (heat spreader)
Thermal shut-down junction temperature
Thermal warning temperature
Thermal shut-down hysteresis
MIN
TYP
150
130
25
MAX
2.5
Electrical Characteristics
Refer to circuit in Figure 4. VCC = 28V, VL = 3.3V, fsw = 384kHz, TA = 25C, RL = 8unless otherwise specified.
SYMBOL PARAMETER
CONDITION MIN TYP
Po
Output power per channel [Notes 4,5]
THD+N <1%
35
Po
Output power per channel [Notes 4,5]
VCC = 30V,
@ 10% THD+N
50
UVL Undervoltage Lockout Threshold
7
OVP
Overvoltage Protection Threshold
30 35
IPD Vcc supply current in Powerdown
Icctri Supply current from Vcc in Tristate
TRISTATE = 0
2-Channel
1
22
Icc Vcc supply current
switching at
384kHz.
72
Isc
THD+N
Output Short-circuit Protection limit
Total Harmonic Distortion+Noise [Note 4]
Speaker outputs.
Po=1 Wrms
Po=30 Wrms
3.0 5.0
0.08
0.33
THD+N
Total Harmonic Distortion+Noise [Note 5]
Po=1 Wrms
Po=30 Wrms
0.05
0.15
SNR
Signal to Noise Ratio [Note 4]
A-Weighted
93
SNR
Signal to Noise Ratio [Note 5]
A-Weighted
100
η Efficiency
Po=2 x 30 W
88
RdsON
Power MOSFET output resistance
Id=1A
200
RdsON
matching
Id=1A
95
ton Turn-on delay time
Resistive load
toff Turn-off delay time
Resistive load
tr Rise time
Resistive load
tf Fall Time
Resistive load
VIL
Low logic input voltage on PWRDN,
TRISTATE pins
VL = 2.7V
VL = 3.3V
VL = 5.0V
0.7
0.8
0.85
MAX
9
40
3
6.5
0.18
0.50
270
100
100
25
25
UNIT
V
V
°C
°C
UNIT
V
V
°C
UNIT
°C/W
°C
°C
°C
UNIT
Wrms
Wrms
V
V
mA
mA
mA
A
%
%
%
%
dB
dB
%
m
%
ns
ns
ns
ns
V
PRELIMINARY
Specifications are subject to change without notice.
PRELIMINARY
129 Morgan Drive, Norwood, MA 02062 voice: (781) 551-9450 fax: (781) 440-9528 email: apogee@apogeeddx.com
CONTROLLED DOCUMENT: P_903-000030_Rev00 Data Sheet, DDX-2050.doc DRN: PRELIMINARY
Page 2 of 13


Part Number DDX-2050
Description All-Digital High Efficiency Power Amplifier
Maker Apogee Technology
Total Page 13 Pages
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