NXP Semiconductors TDA8932B Uživatelský manuál stáhnout pdf (Strana 31)

Product data sheet Rev. 03— 21 June 2007 31 of 48

NXP Semiconductors

TDA8932B

Class-D audio ampliﬁer

= 1 kHz (short time P

); dashed line will require

heat sink for continuous time output power

(1) R

=2× 4 Ω; THD+N = 10 %

(2) R

=2× 4 Ω; THD+N = 0.5 %

(3) R

=2× 8 Ω; THD+N = 10 %

(4) R

=2× 8 Ω; THD+N = 0.5 %

= 1 kHz; power dissipation in junction only; short

time P

at THD+N = 10 %; dashed line will require

heat sink for continuous time output power

(1) R

=2× 4 Ω

(2) R

=2× 8 Ω

Fig 19. Output power per channel as a function of

supply voltage

Fig 20. Power dissipation as a function of supply

voltage

(V)

10 3830 3414 18 22 26

001aaf886

(W/channel)

(4)

(1)

(2)

(3)

(V)

10 383414 18 22 26 30

001aaf889

(W)

(2)

(1)

= 1 kHz;

(1) V

= 22 V; R

=2× 4 Ω

(2) V

= 30 V; R

=2× 8 Ω

= 1 kHz; power dissipation in junction only

(1) V

=22V; R

=2× 4 Ω

(2) V

=30V; R

=2× 8 Ω

Fig 21. Output power efﬁciency as a function of output

power per channel

Fig 22. Power dissipation as a function of output power

per channel (two channels driven)

(W/channel)

02015510

001aad780

100

(%)

(2)

(1)

001aad781

1.0

2.0

3.0

(W)

(W/channel)

−2

1010

−1

(2)

(1)

p+×

-------------------------

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 47 48

TDA8932B 1

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