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IRF6645 Fiches technique(PDF) 3 Page - International Rectifier

No de pièce IRF6645
Description  120 W x 2 Channel Class D Audio Power Amplifier
Download  44 Pages
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Fabricant  IRF [International Rectifier]
Site Internet  http://www.irf.com
Logo IRF - International Rectifier

IRF6645 Fiches technique(HTML) 3 Page - International Rectifier

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2
RD-0617
Specifications
General Test Conditions (unless otherwise noted)
Notes / Conditions
Supply Voltage
±35 V
Load Impedance
4 Ω
Self-Oscillating Frequency
400 kHz
No input signal
Gain Setting
26.8 dB
1 Vrms input yields rated power
Electrical Data
Typical
Notes / Conditions
IR Devices Used
IRS20955 gate driver,
IRF6645 DirectFET MOSFET
Modulator
Self-oscillating, second order sigma-delta modulation, analog input
Power Supply Range
± 25 - 35 V
Output Power CH1-2: (1% THD+N)
120 W
1 kHz
Output Power CH1-2: (10% THD+N)
170 W
1 kHz
Rated Load Impedance
4 Ω
Supply Current
100 mA
No input signal
Total Idle Power Consumption
7 W
No input signal
Channel Efficiency
96%
Single-channel driven,
120 W, Class D stage
Audio Performance
Typical / Class D*
Notes / Conditions
THD+N, 1 W
THD+N, 10 W
THD+N, 60 W
0.005%
0.002%
0.004%
0.002%
0.001%
0.003%
1 kHz, Single-channel driven
Dynamic Range
113 dB
120 dB
A-weighted, AES-17 filter,
Single-channel operation
Residual Noise, 20Hz - 20 kHz BW,
A-Weighted
70 µV
50 µV
40 µV
20 µV
Self-oscillating – 400 kHz
Internal clock – 300 kHz
Damping Factor
170
2000
1 kHz, relative to 4 Ω load
Channel Separation
95 dB
80 dB
100 dB
85 dB
100 Hz
10 kHz
Frequency Response : 20Hz-20 kHz
: 20Hz-40 kHz
±1 dB
±3 dB
1W, 4 Ω - 8 Ω Load
Thermal Performance
Typical
Notes / Conditions
Idling
TC =30
°C
TPCB=37
°C
No signal input, TA=25
°C
2ch x 15 W (1/8 rated power)
TC =54
°C
TPCB=67
°C
Continuous, TA=25
°C
2ch x 120 W (rated power)
TC =80
°C
TPCB=106
°C
At OTP shutdown @ 150 s,
TA=25
°C
Physical Specifications
Dimensions
5.8 in (L) x 5.2 in (W)
Note: Specifications are typical and not guaranteed
*
Class D refers to audio performance measurements of the Class D output power stage
only, with preamp and output filter bypassed.


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