Audio Reference Designs

 

International Rectifier offers a complete class D audio power amplifier design, which contains protection functions and house keeping power supplies for ease of use. This reference design is intended to implement protection circuits and design an optimum PCB layout.

 

PowIRaudio™ Integrated Amplifier Reference Designs

Number of Audio Channels

Load Impedance (Ohm)

Output Power per Channel [RMS]

Power Supply

Reference Design Kit

Featured PowIRaudio™ Device

2

4

35W

Single Power Supply

IRAUDAMP15

IR4311M

IRAUDAMP18

IR4312M

70W

Split Power Supply

IRAUDAMP16

IR4302M

100W

Single Power Supply

IRAUDAMP17

IR4302M

IRAUDAMP19

IR4301M

130W

Split Power Supply

IRAUDAMP12

IR4301M

2

100W

Split Power Supply

IRAUDAMP22

IR4322M

135W

IRAUDAMP21

IR4321M

 

 

Discrete Audio Reference Designs

Number of Audio Channels

Load Impedance (Ohm)

Output Power per Channel [RMS]

Reference Design Kit

Featured IC

Featured MOSFET

1

2

1700W

IRAUDAMP9

IRS2092S

IRFB4227

2

4

150W

IRAUDAMP4A

IRS20957S

IRF6645

IRAUDAMP5

IRS2092S

IRF6645

300W

IRAUDAMP7D

IRS2092

IRFI4019H-117P

IRAUDAMP7S

IRS2092S

IRAUDAMP10

IRS2052M

IRF6775M

8

300W

IRAUDAMP6

IRS20957S

IRF6785M

4

4 150W

IRAUDAMP8

IRS2093S

IRF6665

 

 

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Audio Reference Designs

18 Matching Results

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  • Audio Reference Design
  • 1k Budgetary Pricing
  • Halogen-Free
  • Technology
  • Part
  • Base Part Status
  • Number of Audio Channels
  • Output Power per Channel RMS
  • Power Supply
  • Featured Part
  • Load Impedance (Ohm)
Part
Base Part Status
Output Power per Channel RMS
Power Supply
Featured Part
Active and Preferred
2
135 W
Split
IR4322M
2
Active and Preferred
2
100 W
Split
IR4321M
2
Active and Preferred
2
100 W
Single
IR4301M
4
Active and Preferred
2
35 W
Single
IR4311M
4
Active and Preferred
IRS27952
Active and Preferred
2
35 W
Single
IR4312M
4
Active and Preferred
2
130 W
Split
IR4301M
4
Active and Preferred
2
70 W
Split
IR4302M
4
Active and Preferred
2
100 W
Single
IR4302M
4
Active and Preferred
2
370 W
IRS2052M
4
Active and Preferred
1
1700 W
IRS2092SPBF
2
Active and Preferred
2
300 W
IRS20957SPBF
8
Active and Preferred
2
150 W
IRS20957SPBF
4
Active and Preferred
IR2085
Active and Preferred
4
150 W
IRS2093MPBF
4
Active and Preferred
2
300 W
IRS2092SPBF
4
Active and Preferred
2
300 W
IRS2092SPBF
4
Active and Preferred
2
150 W
IRS2092SPBF
4
   

IRAUDAMP22

Two-channel 50W (2 Ohms) Half-Bridge Class-D Audio Power Amplifier

    Output Power
  • 50W x 2 channels (10%THD+N 2? load; no heatsink),
  • 100W x 2 channels (10%THD+N 2? load; *with heatsink),
    Multiple Protection Features:
  • Over-current protection (OCP), high & low side
  • Over-voltage protection (OVP),
  • Under-voltage protection (UVP), high & low side
  • DC-protection (DCP),
  • Over-temperature protection (OTP)
    PWM Modulator:
  • Self-oscillating half-bridge topology with optional clock synchronization
  Featuring: IR4322 PowIRaudio™ integrated Class D IC

 


 

IRAUDAMP21

Two-channel 90W (2 Ohms) Half-Bridge Class-D Audio Power Amplifier

    Output Power:
  • 90W x 2 channels (10%THD+N 2? load; no heatsink),
  • 135W x 2 channels (10%THD+N 2? load; *with heatsink),
    Multiple Protection Features:
  • Over-current protection (OCP), high & low side
  • Over-voltage protection (OVP),
  • Under-voltage protection (UVP), high & low side
  • DC-protection (DCP),
  • Over-temperature protection (OTP)
    PWM Modulator:
  • Self-oscillating half-bridge topology with optional clock synchronization
  Featuring: IR4321 PowIRaudio™ integrated Class D IC

 


 

IRAUDAMP19

Two-channel 100W (4Ohms) Half-bridge Class-D Audio Power Amplifier with single power supply

  • 100 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.02% THD+N distortion @ 10W, 4 Ohms
  • Residual noise 230 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 75W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology
  • Featuring IR4301 PowIRaudio™ integrated Class D IC

 


 

IRAUDAMP18

Two-channel 35 W (4 Ohms) Half-bridge Class-D Audio Power Amplifier with single power supply

  • 35 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.018% THD+N distortion @ 3W, 4 Ohms
  • Residual noise 180 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 35W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology
  • Featuring IR4312 PowIRaudio™ integrated Class D IC

 

 


 

IRAUDAMP17

Two-channel 100 W (4 Ohms) Half-bridge Class-D Audio Power Amplifier with single power supply

  • 100 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.008% THD+N distortion @ 30W, 4 Ohms
  • Residual noise 220 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 100W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology
  • Featuring IR4302 PowIRaudio™ integrated Class D IC

 

 


 

IRAUDAMP16

Two-channel 70 W (4 Ohms) Half-bridge Class-D Audio Power Amplifier

  • 70 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.015% THD+N distortion @ 30W, 4 Ohms
  • Residual noise 250 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 70W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP,DC protection & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IR4302 PowIRaudio™ integrated Class D IC

 

 


 

IRAUDAMP15

Two-channel 35 W (4 Ohms) Half-bridge Class-D Audio Power Amplifier with single power supply

  • 35 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.02% THD+N distortion @ 5W, 4 Ohms
  • Residual noise 250 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 35W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology
  • Featuring IR4311 PowIRaudio™ integrated Class D IC

 


 

IRAUDAMP12

Two-channel 130 W (4 Ohms) Half-bridge Class-D Audio Power Amplifier

  • 130 W x 2 channels, (THD=10%, 1kHz, 4 Ohms)
  • 0.02% THD+N distortion @ 50W, 4 Ohms
  • Residual noise 250 µV, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 130W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP,DC protection & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IR4301 PowIRaudio™ integrated Class D IC

 

 


 

IRAUDPS3

+/-30V 200W Switch Mode Power Supply for Class-D Audio Power Amplifiers

  • 110Vac or 220Vac selectable input voltage range
  • 89% efficiency at low line, 91% efficiency at high line
  • Over current and short circuit protection
  • Small form factor, light weight
  • Featuring IRS27952S resonant half-bridge control IC

 


 

IRAUDPS1

Switched Mode Audio Power Supply for Class D Audio Power Amplifiers

  • DC-DC converter from 12V to +/-35V
  • Push-Pull converter
  • Power output scalable from 250W-1000W
  • 90% efficiency
  • Protected for OCP, UVP, OVP, OTP
  • External turn ON/OFF
  • Featuring IR2085 self oscillating gate driver and IRF6648 DirectFET MOSFETs

 


 

IRAUDAMP11

Three-channel 120 W Half-bridge

  • 120 W x 3 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.02% THD+N distortion @ 60W, 4 Ohms
  • Residual noise 220 µV, IHF-A weighted, AES-17 filter
  • 90% Efficiency @ 120W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2053M Controller and Gate Driver IC and IRF6665 DirectFET MOSFETs

 


 

IRAUDAMP10

Two-channel 300 W (4Ohms) Half-bridge Class-D Audio Power Amplifier

  • 300 W x 2 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.008% THD+N distortion @ 100W, 4 Ohms
  • Residual noise 220 µV, IHF-A weighted, AES-17 filter
  • 90% Efficiency @ 300W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2052M Controller and Gate Driver IC and IRF6775 DirectFET MOSFETs

 


 

IRAUDAMP9

Single channel 1700 W (2 ?) Half-bridge Class-D Audio Power Amplifier

  • 1700 W Single channel (2? load THDN=10%, 1kHz)
  • 1% THD+N distortion @ 1200W, 2 Ohms +/-75V
  • Residual noise 290 µV, IHF-A weighted, AES-17 filter
  • 94% efficiency @ 1200W, 2 Ohms, Single Channel Driven, Class-D Stage
  • OCP, OVP, UVP, DC protection, HOPS ( High Output peak Shutdown Protection) & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2092S Gate Driver ( with external BJT buffering ) and IRFB4227PBF 200V MOSFETs

 


 

IRAUDAMP8

Four-channel 120 W Half-bridge Class-D Audio Power Amplifier

  • 120 W x 4 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.015% THD+N distortion @ 60W, 4 Ohms
  • Residual noise 200 µV, IHF-A weighted, AES-17 filter
  • 90% Efficiency @ 120W, 4 Ohms, Class-D Stage
  • OCP, OVP, UVP & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2093M Controller and Gate Driver IC and IRF6665 DirectFET MOSFETs

 


 

IRAUDAMP7D

Two-channel 250 W Half-bridge Class-D Audio Power Amplifier

  • 250 W x 2 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.05% THD+N distortion @ 120W, 4 Ohms
  • Residual noise 200 µV, IHF-A weighted, AES-17 filter
  • All through-hole components on single layer PCB
  • OCP, OVP, UVP, DC protection & OTP
  • Half bridge/ full bridge selector
  • Featuring IRS2092 Gate Driver IC and IRFI4019H-117P MOSFETs

 


 

IRAUDAMP7S

Two-channel 250 W Half-bridge Class-D Audio Power Amplifier

  • 250 W x 2 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.01% THD+N distortion @ 120W, 4 Ohms
  • Residual noise 200 µV, IHF-A weighted, AES-17 filter
  • Single layer PCB
  • OCP, OVP, UVP, DC protection & OTP
  • Half bridge/ full bridge selector
  • Featuring IRS2092S Gate Driver IC and IRFI4019H-117P MOSFETs

 


 

IRAUDAMP6

Two-channel 250 W (8 Ohms) Half-bridge Class-D Audio Power Amplifier

  • 250 W x 2 channels (8 Ohms load THD=1%, 1kHZ)
  • 0.005% THD+N distortion @ 125W, 8 Ohms
  • Residual noise 90 µV, IHF-A weighted, AES-17 filter
  • 96% efficiency @ 250W, 8 Ohms, Single Channel Driven, Class-D Stage
  • OCP, OVP, UVP, DC protection & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS20957S Gate Driver and IRF6785 DirectFET MOSFETs

 


 

IRAUDAMP5

Two-channel 120 W Half-bridge Class-D Audio Power Amplifier

  • 120W x 2 Channels (THD=1%, 1kHZ)
  • 0.005% THD+N @ 60W, 4 Ohms
  • 170 µV Distortion, IHF-A weighted, AES-17 filter
  • 96% Efficiency @ 120W, 4 Ohms, Single Channel Driven, Class-D Stage
  • OCP, OVP, UVP, DC protection & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2092S Controller and Gate Driver IC and IRF6645 DirectFET MOSFETs

 


 

IRAUDAMP4A

Two-channel 120 W Half-bridge Class-D Audio Power Amplifier

  • 120 W x 2 channels, (THD=1%, 1kHZ)
  • 0.004% THD+N distortion @ 60W, 4 Ohms
  • Residual noise 52 µV, IHF-A weighted, AES-17 filter
  • 96% efficiency @ 120W, 4 Ohms, Single Channel Driven, Class-D Stage
  • OCP, OVP, UVP, DC protection & OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS20957S Gate Driver and IRF6645 DirectFET MOSFETs
   

 

No archived kits for Audio are avialable for purchase at this time.

Reference Design

Part Number

Description

IRAUDAMP4

IRS20955S

Two-channel 120 W Half-bridge Class-D Audio Power Amplifier

IRAUDAMP3

IRS20124S

Complete 6-channel 120W half-bridge Class D Audio power amplifier

IRAUDAMP1

IR2011S

Audio reference design for High Power Class D Audio Power Amplifier