Intersil Corporation HCA600ACREF Datasheet

HCA600ACREF

PRELIMINARY

Data Sheet October 1999

600W/1000W Full Bandwidth Class D Ampliﬁer

The HCA600ACREFreference 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 achieveaminimumtime-to-market for audio end products. As part of this program, this design is offeredafter executionof 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.Fortechnical assistance, call Central Applications at 1-800-442-7747, or email us at centapp@intersil.com.

File Number 4777

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

Licensing Information

Contacts for licensing details, reference design evaluation, and general questions are as follows:

Continental Far East, Email cfelic@ca.mbn.or.jp Intersil Cool Audio, Email coolaud@intersil.com

Reference Design Block Diagram

SOURCE

PRE-AMPLIFIER

HCA600ACREF

POWER DISTRIBUTION

HCA600ACREF

POWER SUPPLY

Applications

• Sound Reinforcement

• Professional and Commercial Sound Systems

• Powered Speakers

• Hi-Fi Stereo

HCA600ACREF

220MM (8.7”)

HCA8001

78 MM (3.08”)

HEATSINK / EMI SHIELD

FETS AND DIODES

NOTE: TheHCA600ACREFcan be used in manydifferent commercial and professional applications including movie theater surround sound systems as depicted in this reference design block diagram.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 407-727-9207

Coolaudio™ is a trademark of Intersil Corporation.

HCA8001

27.9MM (1.1”)

HCA600ACREF

Absolute Maximum Ratings Operating Conditions

Bus Voltage, V

+/-12V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/-15V

12VFLT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -Bus +15V

Audio Inputs. . . . . . . . . . . . . . 12V Differential Peak to Peak Voltage

NOTE:

1. WARNING: The voltages inside the shield, at the edge connector, and on the speaker cables are potentially deadly. Extreme caution is required.

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is not implied.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±130V (Note 1)

BUS

Bus Voltage, V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±110V

BUS

+/-12V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/-12V

12VFLT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -Bus +12V

Ambient Temperature Range. . . . . . . . . . . . . . . . . . . . . 0oC to 50oC

Electrical Speciﬁcations R

=8Ω,V

LOAD

+/-12V = +/-12V

= ±110V,Supply Source Resistance < 2.5Ω, Storage Capacitor > 12,000µF, 12VFLT= 12V,

BUS

PARAMETER SYMBOL TEST CONDITIONS

SUPPLY SPECIFICATION

Minimum Bus Voltage V ±V

RMS Current I

BUS

±V

RMS Current I

BUS

±V

Average Current I

BUS,Q

12V Float Current I Minimum +/-12V V

BUS MIN

V BUS V BUS

VBUSQ

12VFLTBIAS

BIASmin

±12V Max RMS Current I+/- Rising Under Voltage Lock Out Voltage V Falling Under Voltage Lock Out Voltage V ENABLE Threshold Voltage V ENABLE Threshold Voltage V ENABLE Internal Source Current I

UV Rising UV Falling ENABLE1 ENABLE2

ENABLE

15V

600W into 8Ω±110 V 1kHz Sine Wave, Full Output Power (8Ω load) 3 A 1kHz Sine Wave, Full Output Power (4Ω load) 6 A Quiescent Current, No Signal 60 mA Current supplied to power output gate driver circuitry 400 mA 1kHz Sine Wave, Full Output Power (8Ω load) 11.5 V No input signal 40 mA Bus voltage that activates the amplifier ±75 V Bus voltage that shuts down the amplifier ±50 V Amplifier starts at this voltage, input amplifier muted 1 V Input amplifiers active and entire amplifier active 2 V Internal “Pull Up” Current 25 µA

OUTPUT POWER AND EFFICIENCY

Maximum Output Power (Note 2) P

MAX8Ω

Maximum Output Power (Note 2) 10% THD8ΩTHD = 10%, 1kHz, R Maximum Output Power (Note 2) P

MAX4Ω

Maximum Output Power (Note 2) 10% THD4ΩTHD = 10%, 1kHz, R Efficiency PMAX

PMAX PMAX PMAX

THD = 1%, 1kHz, R

EFFPOUT EFFPOUT EFFPOUT EFFPOUT

= 8Ω 600 W

LOAD

= 4Ω 1000 W

LOAD

= 200W, 8Ω 88 % = 500W, 8Ω 95 % = 400W, 4Ω 88 % = 1000W, 4Ω 90 %

AMPLIFIER PERFORMANCE

Total Harmonic Distortion + Noise

THD+N

Signal to Noise Ratio V Output Noise V

SNR

= 400W, R

OUT

= 8Ω, 1kHz 0.015 %

LOAD

Relative to full scale output, 600W into 8Ω 110 dB

Intermodulation Distortion IMD SMPTE, 60Hz and 7kHz, 4:1,

= 8Ω at 25W Output

LOAD

PSRR (∆V

OUT

/∆V

) PSRR DC 300 µV/V

BUS

= 25oC

UNITSTYP

= 8Ω 800 W

= 4Ω 1200 W

200 µV

0.02 %

HCA600ACREF

Electrical Speciﬁcations R

LOAD

=8Ω,V

= ±110V,Supply Source Resistance < 2.5Ω, Storage Capacitor > 12,000µF, 12VFLT= 12V,

BUS

+/-12V = +/-12V (Continued)

TA = 25oC

PSRR (∆V

PARAMETER SYMBOL TEST CONDITIONS

/∆V

OUT

) PSRRac 120Hz -65 dB

BUS

UNITSTYP

Amplifier Output Offset Voltage |VOS| DC voltage across the speaker, load = 8Ω 2mV Amplifier Output Impedance Z

OUT

Measured at 1kHz and 10W Output 16 mΩ

Damping Factor DF Measured at 1kHz and 10W Output 500

ADDITIONAL CHARACTERISTICS

Cutoff Frequency, Referenced to 1kHz F Cutoff Frequency, Referenced to 1kHz F

UPPER8 UPPER4

20kHz Response, Referenced to 1kHz FR at 20kHz Output at 20kHz and 10W, R Power Bandwidth P

-3dB, R

= 8Ω at 10W Output 80 kHz

LOAD

= 4Ω at 10W Output 70 kHz

LOAD

= 8Ω -0.5 dB

LOAD

Maximum Frequency for Full Power R

= 8Ω 28 kHz

LOAD

Slew Rate SR Maximum rate of change of the output voltage 18 V/µs Maximum Switching Ripple on Output F Input Gain A

PWM

Full Output Power, R

= 8Ω 12.0 V

LOAD

Either Inverting or non inverting input. Unused

26 dB

input returned to analog ground Input Impedance, Inverting Input R Input Impedance, Non Inverting Input R

-INPUT

+INPUT

Output Signal Phasing Phasing Positive going signal on non Inverting input

Differential amplifier input, other input grounded 10 kΩ

Differential amplifier input, other input grounded 5 kΩ

180 Degrees

results in negative going amplifier output Over Temperature Shut Down OT

Rising temperature to shutdown amplifier.

110

Set by an external thermistor Over Temperature Hysteresis OT

Difference between rising and falling temperature

shut down and start up points Amplifier Output Current Limit I Amplifier Output Current Limit Time

(Note 3)

Absolute Value 25 A

Time the amplifier must be in current limiting before

50 ms

shutdown

NOTES:

2. At this power level, the soft clipping circuitry is beginning to activate. It functions to “round off” peaks rather than hard limit as in most linear amplifiers. This helps to give this amplifier a pleasing sound during limiting. Moreover, this feature also makes the amplifier “sound louder”.

3. This time allows the amplifier to reproduce large, sustained peaks without shutting down, yet is adequate to protect the amplifier output from shorted speaker lines.

HCA600ACREF

HCA600ACREF Connector Pin Designations

PIN DESIGNATION FUNCTION WIRE COLOR SPECIFICATIONS AND COMMENTS

1 Analog Ground Input Ground Black

(22 Gauge)

2 Non-Inv Input Audio Input Phono Audio applied to pin 2 does not invert the phase of the signal.

3 Inv Input Audio Input Phono Pin 3 and 4 are differential inputs. Audio applied to pin 3 inverts

4 Analog Ground Input Ground Black

(22 Gauge)

5 Enable Enable Green

(22 Gauge)

6 Fan Controls fan or drives LED

indicatingovertemperature shutdown

7 CL_OUT Drives LED to indicate

onset of current limit

8 SFCL_OUT Drives LED to indicate soft

clipping is activated

9 -12V - Bias Supply Purple

10 +12V + Bias Supply Orange

11 PGND Power Ground Black

12 +BUS Positive Supply Red

13 +BUS Positive Supply Red

14 PGND Power Ground Black

15 -BUS Negative Supply White

16 -BUS Negative Supply White

17 +12VFLT Floating 12V supply

(referenced to -Bus)

18 PGND Power Ground Black

Molex Part Numbers: Header - 26-60-5180, Connector - 09-50-8183, Pins - 08-52-0113

WARNING: Insulate wires. Accidental shorts between +/- Bus and bias supplies will damage the ampliﬁer.

Brown (22 Gauge)

Grey (22 Gauge)

Blue (22 Gauge)

(22 Gauge)

(16 Gauge)

(16 Gauge) Yellow

(20 Gauge)

(16 Gauge)

Connect to ground of pre-amp or connect to pin 18.

Input impedance is 5kΩ.

the phase of the signal. Input impedance is 10kΩ.

Add capacitance to delay startup or pull low to disable amp.

Optional

50mA, -12V ±10%

50mA, +12V ±10%

Connect to Star Ground

For best results use at least 12,000µF, 160V electrolytic capacitor. Limit Bus under no load conditions to 130V.

500mA, +12V ±10% This signal is referenced to the negative rail (-Bus).

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