Total Output Power (W)

0

2.5

5

7.5

10

12.5

15

17.5

20

22.5

25

0

10

20

30

40

50

60

70

80

90

100

D015

PVcc = 6V

PVcc = 13V

PVcc = 14.4V

Output Power (W)

0.01

0.1

1

10

10m

100m

1

10

20

20m

50m

200m 500m

2

5

D013

20 Hz

1 kHz

Supply Voltage (V)

4

5

6

7

8

9

10

11

12

13

14

15

0

4

8

12

16

20

24

28

32

D014

10

TPA3136D2, TPA3136AD2

SLOS938F – MAY 2016 – REVISED JANUARY 2020

www.ti.com

Product Folder Links: TPA3136D2 TPA3136AD2

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Copyright © 2016–2020, Texas Instruments Incorporated

Typical Characteristics (continued)

All Measurements taken at 26dB closed loop gain, 1-kHz audio, T A= 25°C unless otherwise noted. Measurements were

made with AES17 filter using the TPA3136D2 EVM, which is available at ti.com.

AVCC=PVCC = 13 V, Load = 4 Ω + 33 µH, 20 Hz, 1 kHz

Figure 13. Total Harmonic Distortion + Noise vs Output

Power (PBTL)

AVCC=PVCC = 4.5 V to 14.4 V, Load = 4 Ω + 33 µH

Figure 14. Output Power vs Supply Voltage (PBTL)

AVCC=PVCC = 6 V, 13 V, 14.4 V, Load = 4 Ω + 33 µH

Figure 15. Efficiency vs Output Power (PBTL)

8 Parameter Measurement Information

All parameters are measured according to the conditions described in the Specifications section.

Most audio analyzers will not give correct readings of Class-D amplifiers’ performance due to their sensitivity to

out of band noise present at the amplifier output. An AES-17 pre analyzer filter is recommended to use for Class-

D amplifier measurements. In absence of such filter, a 30-kHz low-pass filter (10

Ω + 47 nF) can be used to

reduce the out of band noise remaining on the amplifier outputs.