TDF8599A Просмотр технического описания (PDF) - NXP Semiconductors.

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TDF8599A

I2C-bus controlled dual channel 135 W/4Ω, single channel 250 W/2Ω class-D power amplifier with load diagnostics

NXP Semiconductors. 

NXP Semiconductors

TDF8599A

I2C-bus controlled dual channel class-D power amplifier

Table 3. Pin description …continued

Symbol

Pin Type[1] Description

CLIP

13 O

clip output; open-drain

DIAG

14 O

diagnostic output; open-drain

SDA

15 I/O

I2C-bus data input and output

SCL

16 I

I2C-bus clock input

SSM

17

master setting: Spread spectrum mode frequency

slave setting: phase lock operation

OSCSET

18

master/slave oscillator setting

master only setting: set internal oscillator frequency

OSCIO

19 I/O

external oscillator slave setting: input

internal oscillator master setting: output

DCP

20 I

DC protection input for the filtered output voltages

VSTAB2

21

decoupling internal stabilizer 2 for DMOST drivers

OUT2N

22 O

channel 2 negative PWM output

BOOT2N

23

boot 2 negative bootstrap capacitor

VP2[2]

PGND2

24 P

25 G

channel 2 power supply voltage

channel 2 power ground

BOOT2P

26

boot 2 positive bootstrap capacitor

OUT2P

27 O

channel 2 positive PWM output

OUT1P

28 O

channel 1 positive PWM output

BOOT1P

29

boot 1 positive bootstrap capacitor

PGND1

30 G

channel 1 power ground

VP1[2]

BOOT1N

31 P

32

channel 1 power supply voltage

boot 1 negative bootstrap capacitor

OUT1N

33 O

channel 1 negative PWM output

VSTAB1

34

decoupling internal stabilizer 1 for DMOST drivers

VDDD

GNDD/HW

35

36 G

decoupling of the internal 5 V logic supply

ground digital supply voltage

handle wafer connection

[1] I = input, O = output, I/O = input/output, G = ground and P = power supply.

[2] In this data sheet supply voltage VP describes VP1, VP2 and VPA.

8. Functional description

8.1 General

The TDF8599A is a dual full bridge (BTL) audio power amplifier using class-D technology.

The audio input signal is converted into a Pulse-Width Modulated (PWM) signal using the

analog input and PWM control stages. A PWM signal is applied to driver circuits for both

high-side and low-side enabling the DMOS power output transistors to be driven. An

external 2nd order low-pass filter converts the PWM signal into an analog audio signal

across the loudspeakers.

TDF8599A_2

Product data sheet

Rev. 02 — 30 June 2009

© NXP B.V. 2009. All rights reserved.

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