TDF8599TH datasheet(37/52 Pages) NXP

Part #	TDF8599TH

Description	I2C-bus controlled dual channel 43 W/2 W single channel 85 W/1 W class-D power amplifier with load diagnostics

PDF	52 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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37 / 52 page

TDF8599_1

Product data sheet

Rev. 01 — 13 November 2008

37 of 52

NXP Semiconductors

TDF8599

Class-D power ampliﬁer with load diagnostics

Example 2:

• Vp = 14.4 V

• Po =2 × (25 W/10) = 2 × 2.5 W into 4 Ω (audio with crest factor of 10)

• Tamb =25 °C

• Pmax = 2.5 W (from Figure 39)

• Rth(j-a) =19K/W

• Tj(max) =25 °C + 2.5 W × 19 K/W = 72 °C

14.6 Curves measured in reference design

(1) VP = 14.4 V; RL =2 Ω at 6 kHz.

(2) VP = 14.4 V; RL =2 Ω at 1 kHz.

(3) VP = 14.4 V, RL =2 Ω at 100 Hz.

(1) VP = 14.4 V; RL =4 Ω at 6 kHz.

(2) VP = 14.4 V; RL =4 Ω at 1 kHz.

(3) VP = 14.4 V, RL =4 Ω at 100 Hz.

Fig 31. THD + N as a function of output power

Fig 32. THD + N as a function of output power

001aai800

10−1

102

10−1

10−2

102

10−3

(3)

(2)

(1)

001aai801

10−1

102

10−1

10−2

102

10−3

(3)

(2)

(1)

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