Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Topology | Stereo BTL / mono PBTL Class-D audio amplifier |
| Power | 2 × 30 W into 8 Ω at 24 V stated family configuration |
| Supply | 4.5 V to 26 V |
| Efficiency | >90% stated family efficiency |
| Switching | Multiple switching-frequency options up to 1.2 MHz; master/slave synchronization |
| Audio Inputs | Differential and single-ended analog input support |
| Controls | Programmable gain/power limit, mute/shutdown and fault functions |
| Exact Package / Packing | HTSSOP (DAP), 32 pins with exposed thermal pad; 2000-piece large reel; −40°C to +85°C; marking TPA3118 |
Product Overview
TPA3118D2DAPR is a stereo analog-input Class-D amplifier for TV, powered speaker and general audio systems. At 24 V it can deliver the 30-W-per-channel class into 8-Ω loads while maintaining high switching efficiency.
The family supports multiple switching frequencies and AM-avoidance settings so designers can move Class-D switching energy away from sensitive radio bands. Master/slave synchronization also helps multi-amplifier products avoid uncontrolled beat frequencies.
Power output depends strongly on supply voltage, speaker impedance, distortion target and thermal/PCB conditions. The exposed-pad HTSSOP layout and output LC/filter strategy therefore determine whether headline power is sustainable.
For related devices, see HKEQGOO’s Audio Amplifiers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPA3118D2DAPR |
| Topology | Stereo BTL / mono PBTL Class-D audio amplifier |
| Power | 2 × 30 W into 8 Ω at 24 V stated family configuration |
| Supply | 4.5 V to 26 V |
| Efficiency | >90% stated family efficiency |
| Switching | Multiple switching-frequency options up to 1.2 MHz; master/slave synchronization |
| Audio Inputs | Differential and single-ended analog input support |
| Controls | Programmable gain/power limit, mute/shutdown and fault functions |
| Exact Package / Packing | HTSSOP (DAP), 32 pins with exposed thermal pad; 2000-piece large reel; −40°C to +85°C; marking TPA3118 |
| Manufacturer Status | Active / Production |
| Part Marking | TPA3118 |
Functional Highlights
AM avoidance makes switching frequency a system-level EMC/audio choice
The amplifier can move or synchronize its carrier so radio reception and multi-channel beating are easier to manage.
Programmable power limit can protect speakers and power supplies
Output voltage/power can be capped below the theoretical rail-limited maximum for smaller drivers or constrained adapters.
Design Considerations
- Calculate output power at the actual speaker impedance, supply sag and allowed THD—not only the headline 30 W.
- Use exposed-pad copper/thermal vias and keep switching current loops compact.
- Select output filtering/EMI strategy from cable length, speaker load and regulatory requirements.
Product Status and Exact Order Code
Texas Instruments lists TPA3118D2DAPR as Active / Production; HTSSOP (DAP), 32 pins; 2000-piece large tape and reel; −40°C to +85°C; marking TPA3118.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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