The TPA313xD2 are efficient, stereo digital amplifier power stages for driving speakers with up to 2x42W/4Ω peak power. TPA3131/32D2 operates heatsink-free with cooling to PCB through the bottom side PowerPAD™ with sustained output power from 2 × 4 W / 8 Ω (TPA3131D2) to 2 × 25 W / 8 Ω (TPA3132D2).
The TPA313xD2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences; this is achieved together with an option of Master and Slave synchronization, making it possible to synchronize multiple devices.
The TPA313xD2 are fully protected against faults with short-circuit protection and thermal protection as well as overvoltage, undervoltage, and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.
For feature compatible devices see: PowerPAD up device 2 × 50-W TPA3116D2, PowerPAD down 2 × 15-W TPA3130D2 and 2 × 30-W TPA3118D2.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPA3131D2 | VQFN (32) | 5.00 mm × 5.00 mm |
TPA3132D2 |
Changes from A Revision (September 2013) to B Revision
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | 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. |
2 | GVDD | PO | Internally generated gate voltage supply. Not to be used as a supply or connected to any component other than a 1uF X7R ceramic decoupling capacitor. |
3 | GAIN/SLV | I | Sets Gain and selects between Master and Slave mode depending on pin voltage divider. |
4 | GND | G | Ground |
5 | INNL | I | Negative audio input for left channel. Biased at 3V. |
6 | INPL | I | Positive audio input for left channel. Biased at 3V. |
7 | MUTE | I | Mute signal for fast disable/enable of outputs: HIGH = outputs OFF (high-Z), LOW = outputs ON. TTL logic levels with compliance to AVCC. |
8 | AM2 | I | AM Avoidance Frequency Selection |
9 | AM1 | I | AM Avoidance Frequency Selection |
10 | AM0 | I | AM Avoidance Frequency Selection |
11 | SYNC | DIO | Clock input/output for synchronizing multiple class-D devices. Direction determined by GAIN/SLV pin. Input signal not to exceed GVDD (7V) |
12 | AVCC | P | Analog Supply |
13 | PVCC | P | Power supply |
14 | PVCC | P | Power supply |
15 | BSPL | BST | Boot strap for positive left channel output, connect to 220nF X7R ceramic cap to OUTPL |
16 | OUTPL | PO | Positive left channel output |
17 | GND | G | Ground |
18 | OUTNL | PO | Negative left channel output |
19 | BSNL | BST | Boot strap for negative left channel output, connect to 220nF X7R ceramic cap to OUTNL |
20 | GND | G | Ground |
21 | GND | G | Ground |
22 | BSNR | BST | Boot strap for negative right channel output, connect to 220nF X7R ceramic cap to OUTNR |
23 | OUTNR | PO | Negative right channel output |
24 | GND | G | Ground |
25 | OUTPR | PO | Positive right channel output |
26 | BSPR | BST | Boot strap for positive right channel output, connect to 220nF X7R ceramic cap to OUTPR |
27 | PVCC | PI | Power supply |
28 | PVCC | PI | Power supply |
29 | SDZ | I | Shutdown logic input for audio amp (LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with compliance to AVCC. |
30 | FAULTZ | DO | General fault reporting including Over-current_PVCC, OVP_DVDD FAULT1Z = High, normal operation FAULT1Z = Low, fault condition |
31 | INPR | I | Positive audio input for right channel. Biased at 3V. |
32 | INNR | I | Negative audio input for right channel. Biased at 3V. |
33 | Thermal pad | G | Connect to GND for best system performance. If not connected to GND, leave floating. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Supply voltage, VCC | PVCC, AVCC | –0.3 | 30 | V |
Input voltage, VI | INPL, INNL, INPR, INNR | –0.3 | 6.3 | V |
PLIMIT, GAIN / SLV, SYNC | –0.3 | GVDD+0.3 | V | |
AM0, AM1, AM2, MUTE, SDZ | –0.3 | PVCC+0.3 | V | |
Slew rate, maximum | AM0, AM1, AM2, MUTE, SDZ | 10 | V/ms | |
Operating free-air temperature, TA | –40 | 85 | °C | |
Operating junction temperature, TJ | –40 | 150 | °C | |
Storage temperature, Tstg | –40 | 125 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±500 |
MIN | NOM | MAX | UNIT | ||||
---|---|---|---|---|---|---|---|
VCC | Supply voltage | PVCC, AVCC | 4.5 | 26 | V | ||
VIH | High-level input voltage | AM0, AM1, AM2, MUTE, SDZ, SYNC | 2 | V | |||
VIL | Low-level input voltage | AM0, AM1, AM2, MUTE, SDZ, SYNC | 0.8 | V | |||
VOL | Low-level output voltage | FAULTZ, RPULL-UP = 100 kΩ, PVCC = 26 V | 0.8 | V | |||
IIH | High-level input current | AM0, AM1, AM2, MUTE, SDZ (VI = 2 V, VCC = 18 V) | 50 | µA | |||
RL(BTL) | Minimum load Impedance | Output filter: L = 10 µH, C = 680 nF | 3.2 | 4 | Ω | ||
RL(PBTL) | Output filter: L = 10 µH, C = 1 µF | 1.6 | |||||
Lo | Output-filter Inductance | Minimum output filter inductance under short-circuit condition | 1 | µH |
THERMAL METRIC(1)(2) | TPA313xD2 | UNIT | ||
---|---|---|---|---|
VQFN | ||||
32 PINS | ||||
RθJA | Junction-to-ambient thermal resistance | 31.3 | °C/W | |
ψJT | Junction-to-top characterization parameter | 0.2 | ||
ψJB | Junction-to-board characterization parameter | 5.5 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
KSVR | Power supply ripple rejection | 200 mVPP ripple at 1 kHz, Gain = 20 dB, Inputs AC-coupled to GND | –70 | dB | ||
PO | Continuous output power | RL = 8 Ω, THD+N = 10%, f = 1 kHz, PVCC = 7.4 V (TPA3131D2) | 4 | W | ||
RL = 4 Ω, THD+N = 10%, f = 1 kHz, PVCC = 7.4 V (TPA3131D2) | 7.3 | |||||
RL = 8 Ω, THD+N = 10%, f = 1 kHz, PVCC = 19V (TPA3132D2) | 25 | |||||
RL = 4 Ω, THD+N = 10%, f = 1 kHz, PVCC = 19V (TPA3132D2) | 42 | |||||
THD+N | Total harmonic distortion + noise | RL = 8 Ω, f = 1 kHz, PO = 0.1W to 2 W (TPA3132D2) RL = 8 Ω, f = 1 kHz, PO = 0.1W to 12.5 W (TPA3131D2) |
0.1% | |||
Vn | Output integrated noise | 20 Hz to 22 kHz, A-weighted filter, Gain = 20 dB | 70 | µV | ||
–80 | dBV | |||||
Crosstalk | VO = 1 Vrms, Gain = 20 dB, f = 1 kHz | –100 | dB | |||
SNR | Signal-to-noise ratio | Maximum output at THD+N < 1%, f = 1 kHz, Gain = 20 dB, A-weighted (TPA3131D2, PVCC = 7.4V) | 98 | dB | ||
Maximum output at THD+N < 1%, f = 1 kHz, Gain = 20 dB, A-weighted (TPA3131D2, PVCC = 19V) | 105 | |||||
fOSC | Oscillator frequency | AM2=0, AM1=0, AM0=0 | 376 | 400 | 424 | kHz |
AM2=0, AM1=0, AM0=1 | 470 | 500 | 530 | |||
AM2=0, AM1=1, AM0=0 | 564 | 600 | 636 | |||
AM2=0, AM1=1, AM0=1 | 940 | 1000 | 1060 | |||
AM2=1, AM1=0, AM0=0 | 1128 | 1200 | 1278 | |||
AM2=1, AM1=0, AM0=1 | Reserved | |||||
AM2=1, AM1=1, AM0=0 | ||||||
AM2=1, AM1=1, AM0=1 | ||||||
Thermal trip point | 150+ | °C | ||||
Thermal hysteresis | 15 | °C | ||||
Over current trip point | TPA3131D2 | 3.4 | A | |||
TPA3132D2 | 7 |