TPA3221DDV

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1. Describe

The TPA3221DDV is a high power Class D amplifier, Available at full power, idle and support. The device has closed loop feedback Bandwidth up to 100 kHz, it provides low The entire audio band is distorted and provides Excellent sound quality. the device and AD or low idle current HEAD (High Efficiency AD mode) modulation and can drive up to 2 x 105 W into 4-Ω load or 1 x 208 W into 2-Ω load. TPA3221 can be used in single-ended or differential Analog input interface supporting up to 2 VRMS Four selectable gains: 18 dB, 24 dB, 30 dB and 34 Db. The TPA3221 also achieves >90% efficiency, low Idle power (<0.25 W) and ultra-low standby power (<0.1 watts). This can be done by using 70mΩ MOSFET, optimized gate drive scheme and low-power operating modes. The TPA3221 includes a Built-in LDO for easy integration into single-supply systems. To further simplify the design, The unit integrates basic protection functions Including undervoltage, overvoltage, cycle-by-cycle Current Limit, Short Circuit, Clip Detection, overtemperature warning and shutdown, and DC speaker protection.

2. Feature

    1. 7V to 30V wide supply voltage operation

    2. Stereo (2 x BTL) and mono (1 x PBTL) operation

    3. Output power at 10% THD+N

        – 4 Ω 105 W stereo in BTL configuration

        – 112-W stereo into 3 Ω in BTL configuration

        – 208W mono to 2Ω in PBTL configuration

    4. Output power at 1% THD+N

        – 88-W stereo into 4 Ω in BTL configuration

        – 3 Ω 100 W stereo in BTL configuration

        – 170-W mono to 2 Ω in PBTL configuration

    5. 5V gate drive or built-in LDO for optional single-supply operation

    6. 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) 

        – <75µV output noise (A-weighted)

        – >108-dB SNR (A-weighted)

        – AD or HEAD modulation scheme

    7. Low power operating mode

        – Standby mode: mute and < 1 mA shutdown

        – Low idle current HEAD modulation scheme

        – Single channel BTL operation

    8. Multiple input options simplify preamp design

        – Differential or single-ended analog input

        – Selectable gains: 18 dB, 24 dB, 30 dB, 34 dB

    9. Integrated protections: undervoltage, overvoltage, Cycle-by-cycle current limit, short circuit, clipping detection, overtemperature warning and Shutdown and DC Speaker Protection

  10. 90% Class D operating efficiency (4 Ω)

  11. Pin-Compatible Device Family with Voltage and power stage options

3. Application

    1. Wireless and powered speakers

    2. Sound bar

    3. Bass

    4. Bookshelf sound system

    5. Professional and Public Address (PA) Speaker

4. Pin configuration

5. Pin Description

6. Application Information

    TPA3221DDV can be configured either in stereo BTL, mono BTL or mono PBTL mode depending on output power conditions and system design.