Document
TDF8599
I2C-bus controlled dual channel 43 W/2 Ω single channel 85 W/1 Ω class-D power amplifier with load diagnostics
Rev. 01 — 13 November 2008 Product data sheet
1. General description
The TDF8599 is a dual Bridge-Tied Load (BTL) car audio amplifier comprising an NDMOST-NDMOST output stage based on SOI BCDMOS technology. Low dissipation enables the TDF8599 high-efficiency, class-D amplifier to be used with a smaller heat sink than those normally used with standard class-AB amplifiers.
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The TDF8599 can operate in either non-I2C-bus mode or I2C-bus mode. When in I2C-bus mode, DC load detection results and fault conditions can be easily read back from the device. Up to five I2C-bus addresses can be selected when an external resistor is connected to pin ADS. When pin ADS is short circuited to ground, the TDF8599 operates in non-I2C-bus mode. Switching between Operating mode and Mute mode in non-I2C-bus mode is only possible using pins EN and SEL_MUTE.
2. Features
I I I I I I I I I I I I I I I High-efficiency Low quiescent current Operating voltage from 8 V to 18 V Two 4 Ω/2 Ω capable BTL channels or one 1 Ω capable BTL channel Differential inputs Supports I2C-bus mode with five I2C-bus addresses or non-I2C-bus mode operation Clip detect Independent short circuit protection for each channel Advanced short circuit protection for load, GND and supply Load dump protection Thermal foldback and thermal protection DC offset protection Selectable AD or BD modulation Parallel channel mode for high current drive capability Advanced clocking: N Switchable oscillator clock source: internal (master) or external (slave) N Spread spectrum mode N Phase staggering N Frequency hopping I No ‘pop noise’ caused by DC output offset voltage
NXP Semiconductors
TDF8599
Class-D power amplifier with load diagnostics
I I2C-bus mode: N DC load detection N AC load detection N Thermal pre-warning diagnostic level setting N Identification of activated protections or warnings N Selectable diagnostic information available using pin DIAG I Qualified in accordance with AEC-Q100
3. Applications
I Car audio applications
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4. Quick reference data
Table 1. Symbol VP Istb Iq(tot) Quick reference data Parameter supply voltage standby current total quiescent current voltage on pin EN < 0.8 V Operating mode; no load, snubbers and filter connected Stereo mode; THD = 1 %; RL = 4 Ω THD = 10 %; RL = 4 Ω square wave (EIAJ); RL = 4 Ω THD = 1 %; RL = 2 Ω THD = 10 %; RL = 2 Ω square wave (EIAJ); RL = 2 Ω Parallel mode THD = 10 %; RL = 1 Ω
[1] Output power is measured indirectly based on RDSon measurement.
[1] [1]
Conditions
Min 8 -
Typ 14.4 90
Max 18 10 120
Unit V µA mA
General; Vp = 14.4 V
Dual BTL channel; Vp = 14.4 V Po output power 18 24 29 39 20 26 40 32 43 70 85 W W W W W W W
5. Ordering information
Table 2. Ordering information Package Name TDF8599TH TDF8599TD HSOP36 HSOP36 Description plastic, heatsink small outline package; 36 leads; low stand-off height plastic, heatsink small outline package; 36 leads; low stand-off height Version SOT851-2 SOT938-1 Type number
TDF8599_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 13 November 2008
2 of 52
NXP Semiconductors
TDF8599
Class-D power amplifier with load diagnostics
6. Block diagram
VDDA 10 9 8 DRIVER HIGH PWM CTRL 33 DRIVER LOW PGND1 VP1 IN1N 2 PWM CTRL DRIVER LOW ACGND 5
+
VP1 31
VP2 24
AGND SVRR
STABI1
34 32 VP1
VSTAB1 BOOT1N
TDF8599
1
OUT1N
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IN1P
29
BOOT1P
DRIVER HIGH 28 OUT1P
PGND1 VP2 DRIVER HIGH PWM CTRL
23
BOOT2N
22 DRIVER LOW PGND2 VP2 26
OUT2N
IN2P
3
BOOT2P
IN2N
4 PWM CTRL
DRIVER HIGH 27 DRIVER LOW OUT2P
OSCSET OSCIO SSM MOD VDDD EN SEL_MUTE SCL SDA ADS
18 19 17 12 35 6 7 16 15 11 36 GNDD/HW 14 DIAG 13 20 30 PGND1 MODE SELECT + I2C-BUS DIAGNOSTICS OSCILLATOR
PGND2
5 V STABI
STABI2
21
VSTAB2
PROTECTIONS OVP, OCP, OTP UVP, TF, WP,DCP
25 PGND2
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CLIP DCP
Fig 1.
Block diagram
TDF8599_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 13 November 2008
3 of 52
NXP Semiconductors
TDF8599
Class-D power amplifier with load diagnostics
7. Pinning information
7.1 Pinning
GNDD/HW 36 VDDD 35 VSTAB1 34 OUT1N 33 BOOT1N 32 VP1 31
1 2 3 4 5 6 7 8
IN1P IN1N IN2P IN2N ACGND EN SEL_MUTE SVRR AGND
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PGND1 30 BOOT1P 29 OUT1P 28 OUT2P 27 BOOT2P 26 PGND2 25 VP2 24 BOOT2N 23 OUT2N 22 VSTAB2 21 DCP 20 OSCIO 19
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TDF8599TH
9
10 VDDA 11 ADS 12 MOD 13 CLIP 14 DIAG 15 SDA 16 SCL 17 SSM 18 OSCSET
Fig 2.
Heatsink up (top view) pin configuration TDF8599TH
TDF8599_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 13 November 2008
4 of 52
NXP Semiconductors
TDF8599
Class-D power amplifier with load diagnostics
IN1P IN1N IN2P IN2N ACGND EN SEL_MUTE SVRR
1 2 3 4 5 6 7 8 9
36 GNDD/HW 35 VDDD 34 VSTAB1 33 OUT1N 32 BOOT1N 31 VP1 30 PGND1 29 BOOT1P
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AGND
TDF8599TD
28 OUT1P 27 OUT2P 26 BOOT2P 25 .