6.7.2 Paralleled Bridge -Tied Load (PBTL)

All measurements taken at audio frequency = 1 kHz, closed-loop gain = 20 dB, BD Modulation, 10 µH + 0.68 µF,

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

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 %

A.

Load = 8 Ω

Figure 6-24. Output Power vs Supply Voltage, 8 Ω

Supply Voltage (V)

8

9

10

11

12

13

14

15

0

4

8

12

16

20

24

28

32

THD+N = 1 %

THD+N = 10 %

A.

Load = 4 Ω

Figure 6-25. Output Power vs Supply Voltage, 4 Ω

Output Power (W)

0

10

20

30

40

50

60

70

80

90

100

0

10

20

2

4

6

8

12

14

16

18

D014

PVCC = 8 V

PVCC = 12 V

A.

Load = 8 Ω

Figure 6-26. Efficiency vs Output Power, 8 Ω

Output Power (W)

0

10

20

30

40

50

60

70

80

90

100

0

10

20

2

4

6

8

12

14

16

18

D013

D013

PVCC = 8 V

PVCC = 12 V

A.

Load = 4 Ω

Figure 6-27. Efficiency vs Output Power, 4 Ω

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TPA3139D2

SLOS810A – OCTOBER 2019 – REVISED AUGUST 2020

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