Details

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BUY TPA3112D1PWPR https://www.utsource.net/itm/p/5614338.html
25-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD?

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage range	4.5	-	18	V
Quiescent Current (Iq)	Current consumption in standby mode	-	1.2	-	mA
Output Power (POUT)	Continuous average output power into 4Ω load at 1% THD+N	-	2 x 30	-	W
Efficiency (η)	Power efficiency at 1kHz, 1W output, 12V supply	-	90	-	%
SNR (Signal-to-Noise Ratio)	Signal-to-noise ratio at 1kHz, A-weighted	-	105	-	dB
THD+N (Total Harmonic Distortion + Noise)	Distortion plus noise at 1kHz, 1W output, 12V supply	-	0.007	-	%
PSRR (Power Supply Rejection Ratio)	Rejection of power supply ripple at 1kHz	-	80	-	dB
EMI Filter	Built-in EMI filter to reduce electromagnetic interference	-	-	-	-
Thermal Shutdown Temperature	Temperature at which the device shuts down to prevent damage	-	150	-	°C
Short-Circuit Protection	Protection against short-circuits at the output	-	-	-	-
Overvoltage Protection	Protection against overvoltage conditions	-	-	-	-
Undervoltage Protection	Protection against undervoltage conditions	-	-	-	-

Instructions for Using TPA3112D1PWPR

1. Supply Voltage:

   • Ensure the supply voltage is within the range of 4.5V to 18V to avoid damage to the device.
   • Use a stable power source to maintain consistent performance.

2. Quiescent Current:

   • The device consumes approximately 1.2mA in standby mode. This low current helps in reducing power consumption when not in use.

3. Output Power:

   • The TPA3112D1PWPR can deliver up to 2 x 30W continuous average output power into a 4Ω load with less than 1% THD+N.
   • Ensure the load impedance is appropriate to avoid overloading the amplifier.

4. Efficiency:

   • The device operates at 90% efficiency at 1kHz, 1W output, and 12V supply, making it suitable for battery-powered applications.

5. SNR and THD+N:

   • The signal-to-noise ratio is 105dB A-weighted, ensuring high audio quality.
   • The total harmonic distortion plus noise is 0.007% at 1kHz, 1W output, and 12V supply, providing clear sound reproduction.

6. PSRR:

   • The power supply rejection ratio is 80dB at 1kHz, effectively filtering out power supply ripple and maintaining audio quality.

7. EMI Filter:

   • The built-in EMI filter reduces electromagnetic interference, helping to comply with regulatory standards.

8. Thermal Shutdown:

   • The device will shut down if the temperature exceeds 150°C to prevent thermal damage. Allow the device to cool before resuming operation.

9. Protection Features:

   • The TPA3112D1PWPR includes short-circuit, overvoltage, and undervoltage protection to safeguard the device under various operating conditions.

10. Layout Considerations:

    • Use proper PCB layout techniques to minimize parasitic inductance and capacitance, ensuring optimal performance.
    • Place decoupling capacitors close to the power pins to stabilize the supply voltage.

11. Heat Dissipation:

    • Ensure adequate heat dissipation by using a heatsink or thermal pad to maintain the operating temperature within safe limits.

12. Testing and Verification:

    • Test the device under various conditions to ensure it meets the required specifications and performance criteria.
    • Verify the functionality of all protection features to ensure reliable operation.

(For reference only)