TDF8599B datasheet(8/54 Pages) NXP

Nome de Peças	TDF8599B

Descrição Electrónicos	I2C-bus controlled dual channel 43 W/4 W, single channel 85 W/1 W class-D power amplifier with load diagnostics

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TDF8599B_1

Product data sheet

Rev. 01 — 29 July 2009

8 of 54

NXP Semiconductors

TDF8599B

I2C-bus controlled dual channel class-D power ampliﬁer

The value of the resistor Rosc sets the clock frequency based on Equation 1:

(1)

In Master mode, Spread spectrum mode and frequency hopping can be enabled. In Slave

mode, phase staggering and phase lock operation can be selected. An external clock can

be used as the master-clock on pin OSCIO of the slave devices. When using an external

clock, it must remain active during the shutdown sequence to ensure that all devices are

switched off and able to enter the off state as described in Section 8.2 on page 6.

In Slave mode, an internal watchdog timer on pin OSCIO is triggered when the TDF8599B

is switched off by pulling down pin EN. If the external clock fails, the watchdog timer forces

the TDF8599B to switch off.

8.3.2 Spread spectrum mode (Master mode)

Spread spectrum mode is a technique of modulating the oscillator frequency with a slowly

varying signal to broaden the switching spectrum, thereby reducing the spectral density of

the EMI. Connecting a capacitor (CSSM) to pin SSM enables Spread spectrum mode (see

Figure 6). When pin SSM is connected to pin AGND, Spread spectrum mode is disabled.

Fig 4.

Clock frequency as a function of Rosc

Fig 5.

Master and slave conﬁguration

f

osc

12.45

10

9

×

R

osc

---------------------------- Hz

[]

=

fosc (kHz)

300

500

450

350

400

001aak224

20

30

10

40

50

Rosc

(k

Ω)

0

001aak218

OSCSET

OSCIO

Master

Cosc

R

fosc

Rosc

TDF8599B

OSCSET

OSCIO

Slave 1

TDF8599B

OSCSET

OSCIO

Slave 2

TDF8599B

Nº de peça semelhante - TDF8599B

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
NXP Semiconductors	TDF8599B	569Kb / 54P	I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics Rev. 2 ??23 August 2016
	TDF8599BTH	569Kb / 54P	I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics Rev. 2 ??23 August 2016
	TDF8599B	569Kb / 54P	I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics Rev. 2 ??23 August 2016

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Descrição semelhante - TDF8599B

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
NXP Semiconductors	TDF8599	316Kb / 52P	I2C-bus controlled dual channel 43 W/2 W single channel 85 W/1 W class-D power amplifier with load diagnostics Rev. 01-13 November 2008
	TDF8599B	569Kb / 54P	I2C-bus controlled dual channel 43 W/2 Ohm, single channel 85 W/1 Ohm class-D power amplifier with load diagnostics Rev. 2 ??23 August 2016
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