6.7 Typical Characteristics,

6.7.1 Bridge -Tied Load (BTL)

All measurements taken at audio frequency = 1 kHz, closed-loop gain = 26 dB, BD Modulation, 10 µH + 0.68 µF,

TA = 25°C, AES17 measurement filter, unless otherwise noted.

Output Power (W)

0.01

0.1

1

10

10m

100m

1

10

20

D001

D001

f = 100 Hz

f = 1 kHz

f = 10 kHz

AVCC = PVCC = 12 V, Load = 8 Ω, LC Filter

Figure 6-1. THD+N vs Power (BTL)

Output Power (W)

0.01

0.1

1

10

10m

100m

1

10

20

D002

D002

f = 100 Hz

f = 1 kHz

f = 10 kHz

AVCC=PVCC = 8 V, Load = 4 Ω, LC Filter

Figure 6-2. THD+N vs Power (BTL)

Frequency (Hz)

0.001

0.01

0.1

1

10

100

1k

10k

20

20k

D004

D004

Po = 2 W

Po = 5 W

AVCC = PVCC = 12 V, Load = 8 Ω, LC Filter

Figure 6-3. THD+N vs Frequency (BTL)

Frequency (Hz)

0.001

0.01

0.1

1

10

100

1k

10k

20

20k

D005

D005

Po = 2 W

Po = 5 W

AVCC=PVCC = 12 V, Load = 4 Ω

Figure 6-4. THD+N vs Frequency (BTL)

Supply Voltage (V)

8

9

10

11

12

13

14

15

0

2

4

6

8

10

12

14

16

18

20

22

24

THD+N = 1 %

THD+N = 10 %

Load = 4 Ω

Figure 6-5. Output Power vs Supply Voltage (BTL)

Supply Voltage (V)

8

9

10

11

12

13

14

15

0

2

4

6

8

10

12

14

16

18

20

THD+N = 1 %

THD+N = 10 %

Load = 8 Ω

Figure 6-6. Output Power vs Supply Voltage (BTL)

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TPA3139D2

SLOS810A – OCTOBER 2019 – REVISED AUGUST 2020

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