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PDF HCA600ACREF Data sheet ( Hoja de datos )
| Número de pieza | HCA600ACREF | |
| Descripción | 600W/1000W Full Bandwidth Class D Amplifier | |
| Fabricantes | Intersil Corporation | |
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PRELIMINARY
Data Sheet
HCA600ACREF
October 1999
File Number 4777
600W/1000W Full Bandwidth Class D
Amplifier
The HCA600ACREF reference
design delivers 600W RMS
power into a 8Ω load and
1000W into a 4Ω load.
The design is part of the Intersil’s Coolaudio™ program that
supports customers to achieve a minimum time-to-market for
audio end products. As part of this program, this design is
offered after execution of a licensing agreement. At that time,
Intersil provides to the licensee a documentation package
containing: 1) a circuit description, 2) schematics, 3) test
and manufacturing information, 4) A bill of materials with all
vendors and vendor part numbers, 5) Intersil’s engineering
support contacts, 6) one evaluation unit.
For more information, visit our web page at
http://www.intersil.com. For technical assistance, call Central
Applications at 1-800-442-7747, or email us at
Licensing Information
Contacts for licensing details, reference design evaluation,
and general questions are as follows:
Continental Far East, Email [email protected]
Intersil Cool Audio, Email [email protected]
Reference Design Block Diagram
SOURCE SOURCE
12
PRE-AMPLIFIER
HCA600ACREF
Features
• 600W RMS Power into 8Ω
• 1000W RMS Power into 4Ω
• THD <0.02% at 1kHz and 450W into 8Ω
• SNR >110dB Relative to Full Power
• Output Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . <200µV
• Constant Group Delay
• DC to 80kHz Small Signal Bandwidth
• Power Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . .28kHz
• Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V/µs
• Efficiency >90% at 500W into 8Ω
• Meets FCC and EN55013 Requirements for EMC
• Based On the Intersil HCA8001, Audio Specific IC
• Differential or Single Ended Input
• Over-Current, Over-Voltage and Thermal Protection
• Soft Clipping
• Bridgeable up to 4000W
Applications
• Sound Reinforcement
• Professional and Commercial Sound Systems
• Powered Speakers
• Hi-Fi Stereo
HCA600ACREF
220MM (8.7”)
HCA600ACREF
HCA600ACREF
HCA600ACREF
POWER
SUPPLY
HCA8001
HCA600ACREF
HEATSINK / EMI SHIELD
FETS AND DIODES
HCA8001
NOTE: The HCA600ACREF can be used in many different commercial and professional applications
including movie theater surround sound systems as depicted in this reference design block diagram.
27.9MM (1.1”)
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 407-727-9207 | Copyright © Intersil Corporation 1999
Coolaudio™ is a trademark of Intersil Corporation.
1 page  
HCA600ACREF
Typical Performance Curves
1
400W
0.1
0.01
20W
0.001
0.0005
10
100 1k
FREQUENCY (Hz)
10k 30k
FIGURE 1. THD +N (%) vs FREQUENCY LOAD = 8Ω
1.000
0.0
-1.000
LOAD = 8Ω
LOAD = 4Ω
-2.000
-3.000
-4.000
-5.000
-6.000
10
100 1k
FREQUENCY (Hz)
10k
80k
FIGURE 2. AMPLIFIER FREQUENCY RESPONSE
10W - LOAD = 8Ω
AMPLIFIER OUTPUT vs INPUT
90 LOAD = 8Ω
78
R= ∞
1012
760
65 R = 20K 528
R = 10K
52 338
39 190
26.0
84
13.0
21
0.0 0.0
0.0 0.6 0.12 0.18 2.4 3.0 3.6 4.2 4.8 5.2 6.0
INPUT VOLTAGE (VRMS)
FIGURE 3. AMPLIFIER TRANSFER CHARACTERISTIC WITH
VARIOUS SETTINGS OF SOFT CLIPPING
RESISTOR
Soft Clipping
Figures 3, 4 and 5 show the effects of the soft clipping
circuitry within the amplifier. Figure 3 shows the transfer
characteristic of the amplifier for various values of the soft
clipping programming resistor. An important aspect of soft
clipping is the apparent increase in sound level. As soft
clipping is reached, the upper and lower envelop of the
sinewave is gradually reduced. This “soft” rounding reduces
the higher harmonics that would result if hard clipping as
shown in Figure 5 was enabled. Soft clipping also results in
an amplifier with a more pleasing sound. Figure 4 shows the
rounding of the output with soft clipping, while Figure 5
shows the ampler output without soft clipping.
DSA 602A DIGITIZING SIGNAL ANALYZER
1ms/DIV
FIGURE 4. OSCILLOSCOPE DISPLAY OF AMPLIFIER
OUTPUT WITH SOFT CLIPPING CIRCUIT
ENABLED
DSA 602A DIGITIZING SIGNAL ANALYZER
1ms/DIV
FIGURE 5. OSCILLOSCOPE DISPLAY OF AMPLIFIER
OUTPUT WITH SOFT CLIPPING CIRCUIT
DISABLED
5
5 Page 
HCA600ACREF
Power supply wiring is important. The wires for the +/-Bus
must be kept close to their return (power ground). Twisting
the cables is recommended. The bias supplies should also
be kept close to their returns (AGND). Twisting is
recommended. The return for the 12VFLT is the -Bus. The
primary wires for the transformer should be twisted as
should the secondary wires to the rectifiers. When twisting is
not possible, use tie wraps. Low frequency EMI issues are
usually due to radiation from the bridge rectifiers as the
board itself is compliant.
Authorized Intersil Licensing Agents
Asia
Continental Far East, Inc.
3-1-5 Azabudai, Minato-ku
Tokyo 106, Japan
Tel: 03-3584-0339
FAX: 03-3588-0930
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
11
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