TPA3255開發(fā)板套件編程器的評估板-音頻放大器規(guī)格書PDF中文資料

1 Features

? Wide 10-V to 42-V Supply Voltage Range

? Stereo (2 x BTL) and mono (1 x PBTL)

configurations

? Output Power at 10 THD+N

– 200-W Stereo into 4 Ω in BTL Configuration

– 300-W Mono into 3 Ω in PBTL Configuration

– 425W Mono into 2 Ω in PBTL Configuration

? Output Power at 1 THD+N

– 170-W Stereo into 4 Ω in BTL Configuration

– 325-W Mono into 2 Ω in PBTL Configuration

? Closed-loop feedback design

– <0.02 THD+N at 1 W into 4 Ω

– 60-dB PSRR (BTL, No input signal)

– <100-μV output noise (A-weighted)

– >110-dB SNR (A-weighted)

? Low-Power operating modes

– Standby modes: mute and shutdown

– Single-channel BTL operation

? Multiple input options to simplify pre-amp design

– Differential or single-ended analog inputs

– Selectable Gains: 20 dB, 23.5 dB, 32 dB, 36 dB

? Integrated Protection: Undervoltage, Overvoltage,

Overcurrent, Cycle-by-cycle Current Limit, Short

Circuit, Clipping Detection, Overtemperature

Warning and Shutdown, and DC Speaker

Protection

? Easily synchronize muliples devices

? 90 Efficient Class-D Operation (4 Ω)

2 Applications

? Bluetooth and Wi-Fi? speakers

? Soundbars

? Subwoofers

? Professional and public address (PA) speakers

3 Description

TPA3223 is a high-power Class-D amplifier that

enables efficient operation at full-power, idle and

standby. The device features closed-loop feedback

which provides low distortion across the audio band

and delivers excellent sound quality. The device

operates in AD modulation and can drive up to 2 x

200 W into 4-Ω load or 1 x 400 W into 2-Ω load.

The TPA3223 features a single-ended or differential

analog-input interface that supports up to 2 VRMS with

four selectable gains: 20 dB, 23.5 dB, 32 dB and

36 dB. The TPA3223 also achieves >90 efficiency,

low idle power and ultra-low standby power (<0.1

W). This is made possible through the use of 60-

mΩ MOSFETs, an optimized gate drive scheme and

low-power operating modes. To further simplify the

design, the device integrates essential protection

features including undervoltage, overvoltage, cycleby-

cycle current limit, short circuit, clipping detection,

overtemperature warning and shutdown, and DC

speaker protection.