Overview
The TPA3106D1VFPR is a 40-W mono Class-D audio power amplifier produced by Texas Instruments. This device is designed for driving bridged-tied stereo speakers and is known for its high efficiency, which eliminates the need for an external heat sink in most applications. The TPA3106D1VFPR operates from a supply voltage range of 10 V to 26 V and can drive speakers with impedances as low as 4Ω. It features four selectable, fixed gain settings and includes thermal and short-circuit protection with auto recovery.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Continuous Output Power (THD+N < 7%, f = 1 kHz, VCC = 24 V, RL = 8 Ω) | 25 | - | - | W |
| Supply Voltage Range | 10 | - | 26 | V |
| Operating Free-Air Temperature Range | -40 | - | 85 | °C |
| Gain Settings | 19 dB, 25 dB, 31 dB, 35 dB | - | - | - |
| Total Harmonic Distortion + Noise (THD+N) at 1 kHz, PO = 20 W | - | 0.2% | - | % |
| Signal-to-Noise Ratio (SNR) | - | 98 | - | dB |
| Thermal Trip Point | - | 150 | - | °C |
| Thermal Hysteresis | - | 30 | - | °C |
Key Features
- High efficiency (~92%) Class-D operation, eliminating the need for an external heat sink.
- Four selectable, fixed gain settings (19 dB, 25 dB, 31 dB, 35 dB).
- Differential inputs.
- Thermal and short-circuit protection with auto recovery feature.
- Clock output for synchronization with multiple Class-D devices.
- Exposed thermal pad on the underside of the chip for improved thermal dissipation.
Applications
- Televisions
- Powered speakers
- Home audio systems
- Automotive audio systems
- Other consumer electronics requiring high-efficiency audio amplification.
Q & A
- What is the maximum output power of the TPA3106D1VFPR? The TPA3106D1VFPR can deliver up to 40 W of continuous output power into an 8-Ω load from a 25-V supply.
- What is the operating voltage range of the TPA3106D1VFPR? The device operates from a supply voltage range of 10 V to 26 V.
- What are the gain settings available on the TPA3106D1VFPR? The device has four selectable, fixed gain settings: 19 dB, 25 dB, 31 dB, and 35 dB.
- Does the TPA3106D1VFPR require an external heat sink? No, due to its high efficiency (~92%), the TPA3106D1VFPR typically does not require an external heat sink.
- What kind of protection features does the TPA3106D1VFPR have? The device includes thermal and short-circuit protection with an auto recovery feature.
- How does the TPA3106D1VFPR handle thermal dissipation? The device has an exposed thermal pad on the underside of the chip that must be connected to a thermally dissipating plane for proper power dissipation.
- What is the signal-to-noise ratio (SNR) of the TPA3106D1VFPR? The SNR is 98 dB.
- What are some common applications for the TPA3106D1VFPR? Common applications include televisions, powered speakers, home audio systems, and automotive audio systems.
- How does the TPA3106D1VFPR's modulation scheme differ from traditional Class-D modulation schemes? The TPA3106D1VFPR uses a modulation scheme where the outputs are in phase with each other, reducing switching current and I2R losses in the load.
- Does the TPA3106D1VFPR support synchronization with multiple Class-D devices? Yes, it has a clock output for synchronization with multiple Class-D devices.
