TDF8591TH datasheet(7/34 Pages) NXP

部品番号	TDF8591TH

部品情報	2 X 100 W SE (4 OHM) or 1 X 310 W BTL (4 OHM) class-D amplifier

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TDF8591TH_1

Product data sheet

Rev. 01 — 5 March 2008

7 of 34

NXP Semiconductors

TDF8591TH

2

× 100 W SE (4 Ω) or 1 × 310 W BTL (4 Ω) class-D ampliﬁer

When the loudspeaker terminals are short-circuited and the OCP is triggered the

TDF8591TH is switched off completely and will try to restart every 100 ms (see Figure 6):

• 50 ms after switch off pin DIAG will be released

• 100 ms after switch off the ampliﬁer will return to mute

• 150 ms after switch off the ampliﬁer will return to operation. If the short-circuit

condition is still present after this time this cycle will be repeated. The average

dissipation will be low because of the small duty cycle

A short-circuit of the loudspeaker terminals to one of the supply lines will also trigger the

activation of the OCP and the ampliﬁer will shut down. During restart the window

protection will be activated. As a result the ampliﬁer will not start up after 100 ms and pin

DIAG will remain LOW until the short-circuit to the supply lines is removed.

Fig 5.

Pin DIAG with activated current limiting

Fig 6.

Restart of the TDF8591TH

001aad838

≈ VSSA + 8 V

Ch1 mean

5.03 V

M 20.0 ms

A Ch1 ~ 1.28 V

≈ VSSA + 2 V

VSSA

τ

001aah365

input voltage

current in the

short-circuit

(between the

speaker terminals)

PWM output

pin DIAG

50 ms

50.0 V

∼

5.00 V

Ω

Ch2

Ch4

500 mV

Ch3

1.80 V

10.0 V

M 25.0 ms

Ch1

Ch3

2

3

1

4

50 ms

同様の部品番号 - TDF8591TH

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同様の説明 - TDF8591TH

メーカー	部品番号	データシート	部品情報
NXP Semiconductors	TDF8590TH	215Kb / 30P	2 X 80 W SE (4 OHM) or 1 X 160 W BTL (8 OHM) class-D amplifier Rev. 02-23 April 2007
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	TDA8591J	295Kb / 36P	4 X 44 W into 4 or 4 X 75 W into 2 quad BTL car radio power amplifier 2002 Jan 14
	TDA8564Q	81Kb / 15P	2 x 24 W BTL or 4 x 12 W single-ended car radio power amplifier February 1995
	TDA8561Q	117Kb / 24P	2 x 24 W BTL or 4 x 12 W single-ended car radio power amplifier 1999 Jun 30
	TDA8920B	209Kb / 34P	2 X 100 W class-D power amplifier Rev. 01-1 October 2004

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