TPA3220 50W Stereo / 100W Peak HD Analog-Input Pad-Down Class-D Amplifier | TI.com

TPA3220 (ACTIVE)

50W Stereo / 100W Peak HD Analog-Input Pad-Down Class-D Amplifier

50W Stereo / 100W Peak HD Analog-Input Pad-Down Class-D Amplifier - TPA3220
 

Description

TPA3220 is a pad-down Class-D amplifier that enables efficient operation at full-power, idle and standby. The device features closed-loop feedback with a bandwidth up to 100 kHz, which provides low distortion across the audio band and delivers excellent sound quality. The device operates with either AD or low idle-current HEAD (High Efficiency AD) modulation and can drive up to 2 x 60 W continuously or 2 x 110 W peak into 4-Ω load with the thermal pad on bottom connected to the PCB.

The TPA3220 features a single-ended or differential analog-input interface that supports up to 2 VRMS with four selectable gains: 18 dB, 24 dB, 30 dB and 34 dB20 dB, 26 dB, 32 dB and 36 dB. The TPA3220 also achieves >90% efficiency, low idle power (<0.25 W) and ultra-low standby power (<0.1 W). This is made possible through the use of 70-mΩ MOSFETs, an optimized gate drive scheme and low-power operating modes. TPA3220 includes a built-in LDO for easy integration in single-power-supply systems. To further simplify the design, the device integrates essential protection features including undervoltage, cycle-by-cycle current limit, short circuit, clipping detection, overtemperature warning and shutdown, as well as DC speaker protection.

Features

  • Stereo (2 x BTL) and Mono (1 x PBTL) Operation
  • Output Power at 10% THD+N
    • 60-W Stereo Continuous into 8 Ω in BTL
    • 110-W Stereo Peak into 4 Ω in BTL
  • Output Power at 1% THD+N
    • 50-W Stereo Continuous into 8 Ω in BTL
    • 89-W Stereo Peak into 4 Ω in BTL
  • 5-V Gate Drive or Built-in LDO for Optional Single-Supply Operation
  • Closed-Loop Feedback Design
    • Signal Bandwidth up to 100 kHz for High-Frequency Content From HD Sources
    • 0.02% THD+N at 1 W into 4 Ω
    • 60-dB PSRR (BTL, No Input Signal)
    • <72-µV Output Noise (A-Weighted)
    • >108-dB SNR (A-Weighted)
    • AD or HEAD Modulation Schemes
  • Low-Power Operating Modes
    • Standby Modes: Mute and < 1 mA Shutdown
    • Low Idle-Current HEAD Modulation Scheme
    • Single-Channel BTL Operation
  • Multiple Input Options to Simplify Pre-Amp Design
    • Differential or Single-Ended Analog Inputs
    • Selectable Gains: 18 dB, 24 dB, 30 dB, 34 dB
  • Integrated Protection: Undervoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection
  • 90% Efficient Class-D Operation (4 Ω)
  • Thermal Pad Located on Package Bottom
  • Pin-Compatible Family of Devices with Voltage and Power-Level Options

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Parametrics Compare all products in Speaker Amps

 
Audio Input Type
Architecture
Speaker Channels (Max)
Power Stage Supply (Min) (V)
Power Stage Supply (Max) (V)
Output Power (W)
Load (Min) (ohms)
SNR (dB)
THD + N @ 1 kHz (%)
Iq (Typ) (mA)
Control Interface
Closed/Open Loop
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Power to Parallel Bridge Tied Load (Max) (W)
PSRR (dB)
Operating Temperature Range (C)
Rating
TPA3220 TPA3221 TPA3244 TPA3245 TPA3250 TPA3251 TPA3255
Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input    
Class-D     Class-D     Class-D     Class-D     Class-D     Class-D     Class-D    
Stereo     Stereo     4     4     4     4     4    
7     7     12     12     12     12     18    
30     30     30     30     36     36     53.5    
100     100     100     115     130     175     315    
1     1     1.5     1.5     1.5     1.5     4    
108     108     110     112     110     111     112    
0.02     0.02     0.005     0.005     0.005     0.005     0.006    
15     15     15     15     12.5     12.5     24    
Hardware     Hardware     Hardware     Hardware     Hardware     Hardware     Hardware    
Closed     Closed     Closed     Closed     Closed     Closed     Closed    
5     5     10.8     10.8     10.8     10.8     10.8    
30     30     13.2     13.2     13.2     13.2     13.2    
200     200     160     230     189     355     600    
60     60     60     60     60     80     80    
-40 to 85     -40 to 85     0 to 70     0 to 70     0 to 70     0 to 70     0 to 70    
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