TDF8599
I
2
C-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.
The TDF8599 can operate in either non-I
2
C-bus mode or I
2
C-bus mode. When in I
2
C-bus
mode, DC load detection results and fault conditions can be easily read back from the
device. Up to five I
2
C-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-I
2
C-bus mode.
Switching between Operating mode and Mute mode in non-I
2
C-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 I
2
C-bus mode with five I
2
C-bus addresses or non-I
2
C-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
I
2
C-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
4. Quick reference data
Table 1.
Symbol
V
P
I
stb
I
q(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 %; R
L
= 4
Ω
THD = 10 %; R
L
= 4
Ω
square wave (EIAJ); R
L
= 4
Ω
THD = 1 %; R
L
= 2
Ω
THD = 10 %; R
L
= 2
Ω
square wave (EIAJ); R
L
= 2
Ω
Parallel mode
THD = 10 %; R
L
= 1
Ω
[1]
Output power is measured indirectly based on R
DSon
measurement.
[1]
[1]
Conditions
Min
8
-
-
Typ
14.4
-
90
Max
18
10
120
Unit
V
µA
mA
General; V
p
= 14.4 V
Dual BTL channel; V
p
= 14.4 V
P
o
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
V
DDA
10
9
8
DRIVER
HIGH
PWM
CTRL
IN1P
1
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
33
OUT1N
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
V
DDD
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
+
I
2
C-BUS
DIAGNOSTICS
OSCILLATOR
PGND2
5 V STABI
STABI2
21
VSTAB2
PROTECTIONS
OVP, OCP, OTP
UVP, TF, WP,DCP
25
PGND2
001aai766
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
V
DDD
35
VSTAB1 34
OUT1N 33
BOOT1N 32
VP1 31
PGND1 30
BOOT1P 29
OUT1P 28
OUT2P 27
BOOT2P 26
PGND2 25
VP2 24
BOOT2N 23
OUT2N 22
VSTAB2 21
DCP 20
OSCIO 19
001aai767
1
2
3
4
5
6
7
8
IN1P
IN1N
IN2P
IN2N
ACGND
EN
SEL_MUTE
SVRR
AGND
TDF8599TH
9
10 V
DDA
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
AGND
1
2
3
4
5
6
7
8
9
36 GNDD/HW
35 V
DDD
34 VSTAB1
33 OUT1N
32 BOOT1N
31 VP1
30 PGND1
29 BOOT1P
TDF8599TD
28 OUT1P
27 OUT2P
26 BOOT2P
25 PGND2
24 VP2
23 BOOT2N
22 OUT2N
21 VSTAB2
20 DCP
19 OSCIO
V
DDA
10
ADS 11
MOD 12
CLIP 13
DIAG 14
SDA 15
SCL 16
SSM 17
OSCSET 18
001aai768
Fig 3.
Heatsink down (top view) pin configuration TDF8599TD
7.2 Pin description
Table 3.
Symbol
IN1P
IN1N
IN2P
IN2N
ACGND
EN
Pin description
Pin
1
2
3
4
5
6
Type
[1]
I
I
I
I
I
I
Description
channel 1 positive audio input
channel 1 negative audio input
channel 2 positive audio input
channel 2 negative audio input
decoupling for input reference voltage
enable input:
non-I
2
C-bus mode: switch between off and Mute mode
I
2
C-bus mode: off and Standby mode
SEL_MUTE
SVRR
AGND
V
DDA
ADS
MOD
TDF8599_1
7
8
9
10
11
12
I
I
G
P
I
I
select mute or on (unmute)
decoupling for internal half supply reference voltage
analog supply ground
analog supply voltage
non-I
2
C-bus mode: connected to ground
I
2
C-bus mode: selection and address selection pin
modulation mode, phase shift and parallel mode select
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 13 November 2008
5 of 52
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