The TPA3110D2 is a 15-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard™ speaker protection circuitry includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter allows the user to set a "virtual" voltage rail lower than the chip supply to limit the amount of current through the speaker. The DC detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.
The TPA3110D2 can drive stereo speakers as low as 4 Ω. The high efficiency of the TPA3110D2, 90%, eliminates the need for an external heat sink when playing music.
The outputs are also fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPA3110D2 | HTSSOP (28) | 9.70 mm × 4.40 mm |
Changes from E Revision (November 2015) to F Revision
Changes from D Revision (July 2012) to E Revision
Changes from C Revision (August 2010) to D Revision
Changes from B Revision (July 2010) to C Revision
Changes from A Revision (July 2009) to B Revision
Changes from * Revision (July 2009) to A Revision
DEVICE NUMBER | SPEAKER CHANNELS | SPEAKER AMP TYPE | OUTPUT POWER (W) | ADDITIONAL FEATURES |
---|---|---|---|---|
TPA3110D2 | Stereo | Class D | 15 | Power limiter |
TPA3130D1 | Stereo | Class D | 15 | |
TPA3118D2 | Stereo | Class D | 30 | Power limiter |
TPA3116D1 | Stereo | Class D | 50 | Power limiter |
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | SD | I | Shutdown logic input for audio amp (LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with compliance to AVCC. |
2 | FAULT | O | Open drain output used to display short circuit or dc detect fault status. Voltage compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting FAULT pin to SD pin. Otherwise, both short circuit faults and dc detect faults must be reset by cycling PVCC. |
3 | LINP | I | Positive audio input for left channel. Biased at 3 V. |
4 | LINN | I | Negative audio input for left channel. Biased at 3 V. |
5 | GAIN0 | I | Gain select least significant bit. TTL logic levels with compliance to AVCC. |
6 | GAIN1 | I | Gain select most significant bit. TTL logic levels with compliance to AVCC. |
7 | AVCC | P | Analog supply |
8 | AGND | — | Analog signal ground. Connect to the thermal pad. |
9 | GVDD | O | High-side FET gate drive supply. Nominal voltage is 7V. Also should be used as supply for PLIMIT function. |
10 | PLIMIT | I | Power limit level adjust. Connect a resistor divider from GVDD to GND to set power limit. Connect directly to GVDD for no power limit. |
11 | RINN | I | Negative audio input for right channel. Biased at 3 V. |
12 | RINP | I | Positive audio input for right channel. Biased at 3 V. |
13 | NC | — | Not connected |
14 | PBTL | I | Parallel BTL mode switch |
15 | PVCCR | P | Power supply for right channel H-bridge. Right channel and left channel power supply inputs are connect internally. |
16 | PVCCR | P | Power supply for right channel H-bridge. Right channel and left channel power supply inputs are connect internally. |
17 | BSPR | I | Bootstrap I/O for right channel, positive high-side FET. |
18 | OUTPR | O | Class-D H-bridge positive output for right channel. |
19 | PGND | — | Power ground for the H-bridges. |
20 | OUTNR | O | Class-D H-bridge negative output for right channel. |
21 | BSNR | I | Bootstrap I/O for right channel, negative high-side FET. |
22 | BSNL | I | Bootstrap I/O for left channel, negative high-side FET. |
23 | OUTNL | O | Class-D H-bridge negative output for left channel. |
24 | PGND | — | Power ground for the H-bridges. |
25 | OUTPL | O | Class-D H-bridge positive output for left channel. |
26 | BSPL | I | Bootstrap I/O for left channel, positive high-side FET. |
27 | PVCCL | P | Power supply for left channel H-bridge. Right channel and left channel power supply inputs are connect internally. |
28 | PVCCL | P | Power supply for left channel H-bridge. Right channel and left channel power supply inputs are connect internally. |