The IRAUDAMP4A reference design is an example of a two-channel 120 W half-bridge Class D audio power amplifier. The reference design will demonstrate how to use the IRS20957, implement protection circuits, and design an optimum PCB layout using the IRF6645 DirectFET MOSFETs.
The resulting design requires no heatsink for normal operation (one-eighth of continuous rated power). The reference design contains all the required housekeeping power supplies for ease of use. The two-channel design is scalable, for power and the number of channels.
(Infineon Technologies bought International Rectifier)
| Manufacturer | Infineon Technologies |
|---|---|
| Category | Audio Amplifiers |
| Eval Board Part Number | IRAUDAMP4A-ND |
| Eval Board Supplier | Infineon Technologies |
| Eval Board |
Board not Stocked
|
| Amplifier Type |
Class D
|
| Number of Outputs |
Stereo
|
| Output Power (RMS) @ Load |
120 W x 2 @ 4 Ω
|
| Voltage In |
±25 ~ 35 V
|
| THD+N (1kHz) @ Conditions |
< 0.004% @ 60 W (4 Ω, ±35 V)
|
| Features |
Over Current Protection
Over Voltage Protection Thermal Protection Under Voltage Protection, Brown-Out |
| Efficiency @ Conditions |
>95%, ±35V in, 4 Ω @ 120 W
>80%, ±35V in, 4 Ω @ 10 ~ 170 W |
| Standby Current [Typical] |
100 µA
|
| Quiescent Current [Typical] |
100 mA
|
| Component Count + Extras |
293 + 29
|
| Application / Target Market |
Audio: Hi Fi
Audio: Home Theater Systems Audio: Powered Speakers Portable Devices |
| Design Author |
Infineon Technologies
|
| Main I.C. Base Part |
IRF6645
IRS20957 |
| Quiescent Current [Maximum] |
- Not Given
|
| Standby Current [Maximum] |
- Not Given
|
| Date Created By Author | 2009-12 |
| Date Added To Library | 2017-05 |
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