TDF8599B datasheet(13/54 Pages) NXP

부품명	TDF8599B

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

PDF	54 Pages

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제조업체	NXP [NXP Semiconductors]

홈페이지	http://www.nxp.com

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13 / 54 page

TDF8599B_1

Product data sheet

Rev. 01 — 29 July 2009

13 of 54

NXP Semiconductors

TDF8599B

I2C-bus controlled dual channel class-D power ampliﬁer

8.4.2 Phase staggering (Slave mode)

In Slave mode with phase lock operation enabled, a phase shift with respect to the

incoming clock signal can be selected to distribute the switching moments over time. In

non-I2C-bus mode, 1

⁄

2 π phase shift can be programmed using pin MOD. In I

2C-bus mode,

ﬁve different phase shifts (1

⁄

4 π,

⁄

3 π,

⁄

2 π,

⁄

3 π,

⁄

4 π) can be selected using the I

2C-bus

bits (IB3[D1:D3]). See Table 8 for selection of the phase shift in non-I2C-bus mode with pin

MOD. An additional capacitor must be connected to pin SSM when 1

⁄

4 π phase shift is

used (see Figure 8). An example of using 1

⁄

2 π phase shift for BD modulation is shown in

Figure 12.

a. Phase switching cycle.

b. Inverted signal to the modulator.

Fig 11. BD modulation

001aai781

INxP

OUTxP

OUTxP, OUTxN

001aai782

INxN

OUTxN

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