Power amplifier with load detection
and auto BTL/SE selection
Preliminary specification
Supersedes data of 1999 Apr 08
File under Integrated Circuits, IC01
2001 Jul 23
Page 2
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
FEATURES
General
• Operating voltage from 8 to 18 V
• Low distortion
• Few external components, fixed gain
• Automatic mode selection (SE or BTL) depending on
connected rear loads
• Can be used as a stereo amplifier in Bridge-Tied Load
(BTL) or quad Single-Ended (SE) amplifiers
• Single-ended mode without loudspeaker capacitor
• Soft clipping, to guarantee good clip behaviour with
inductive loads
• Mute and standby mode with one-pin operation
• Diagnostic information for Dynamic Distortion Detector
(DDD), high temperature (140 °C) operation mode and
short-circuit
• Noswitch-on/offplopswhenswitchingbetweenstandby
and mute and from mute to on
• Load detection on rear channels when switching from
standby to mute
• Fast mute on supply voltage drops (low VP mute).
TDA8586
GENERAL DESCRIPTION
The device incorporates the following functions:
• 4 × 6 W SE amplifies without SE capacitor, because of
the availability of 2 half supply voltage power buffers
• 2 × 20 W BTL amplifiers
• Automatic switching between 2 and 4 speaker
operation. The mode of operation is determined during
start-up.
This amplifier is protected for all general short-circuit
conditions to battery or ground, overvoltage, 45 V load
dump and short-circuits on the speaker outputs.
Thedevice is contained in a 20-pin power HSOP package,
but is also available in a 17-pin SIL power package. When
packaged in the 20-pin HSOP package additional
functions are available:
• DDD level selection between 2 and 10%
• Overrule pin for changing mode of operation
(from SE to BTL or from BTL to SE).
Protection
• Short-circuit proof to ground, positive supply voltage on
all pins and across load
• ESD protected on all pins
• Thermal protection against temperatures exceeding150 °C
• Load dump protection
• Overvoltage protection.
ORDERING INFORMATION
TYPE
NUMBER
TDA8586QDBS17Pplastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)SOT243-1
TDA8586THHSOP20heatsink small outline package; 20 leads; low stand-offSOT418-2
NAMEDESCRIPTIONVERSION
PACKAGE
2001 Jul 232
Page 3
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
TDA8586
auto BTL/SE selection
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
P
I
q(tot)
I
stb
G
v
Bridge-tied load application
P
o
THDtotal harmonic distortionf
V
OO
V
n(o)
Single-ended application
P
o
THDtotal harmonic distortionf
V
OO
V
n(o)
operating supply voltage8.0−18V
total quiescent currentVP= 14.4 V, SE mode−140170mA
standby supply currentVP= 14.4 V−1100µA
voltage gainSE mode252627dB
BTL mode313233dB
output powerVP= 14.4 V; RL=4Ω
THD = 0.5%1415−W
THD = 10%1721−W
= 1 kHz; Po=1W;
i
−0.050.15%
VP= 14.4 V; RL=4Ω
DC output offset voltageVP= 14.4 V; RL=4Ω;
−1020mV
mute condition
V
= 14.4 V; on condition−0100mV
P
noise output voltageRs=1kΩ; VP= 14.4 V−100200µV
output powerVP= 14.4 V; RL=4Ω
THD = 0.5%44.5−W
THD = 10%56−W
= 1 kHz; Po=1W;
i
−0.080.15%
VP= 14.4 V; RL=4Ω
DC output offset voltageVP= 14.4 V; RL=4Ω;
−1020mV
mute condition
V
= 14.4 V; on condition−0100mV
P
noise output voltageRs=1kΩ; VP= 14.4 V−80150µV
2001 Jul 233
Page 4
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
BLOCK DIAGRAM
handbook, full pagewidth
IN1
IN2
5
TDA8586Q
6
V
60
kΩ
60
kΩ
60
kΩ
P1
2
TDA8586
V
P2
16
−
V/I
+
+
V/I
−
+
V/I
−
−
OA
1
OUT1
+
−
V
Pn
OA
3
HVP1
+
+
OA
4
OUT2
−
IN3
ACREF
IN4
MSO
7
11
V
Pn
30 kΩ
BUFFER
8
60
kΩ
60
kΩ
60
kΩ
−
V/I
+
−
OA
17
OUT3
+
+
V/I
−
−
V
Pn
OA
15
HVP2
+
+
+
V/I
OA
−
14
OUT4
−
13
INTERFACEDIAGNOSTIC
10
PGND2
9
PGND1
12
MGR023
DIAG
Fig.1 Block diagram SOT243-1.
2001 Jul 234
Page 5
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
Power amplifier with load detection and
auto BTL/SE selection
handbook, halfpage
PGND1
PGND2
ACREF
OUT1
V
P1
HVP1
OUT2
IN1
IN2
IN3
IN4
DIAG
MSO
OUT4
HVP2
V
P2
OUT3
1
2
3
4
5
6
7
8
9
TDA8586Q
10
11
12
13
14
15
16
17
MGR025
handbook, halfpage
OUT2
HVP1
V
P1
OUT1
PGND1
PGND2
OUT3
V
P2
HVP2
OUT4
20
19
18
17
16
TDA8586TH
15
14
13
12
11
MGR026
TDA8586
1
n.c.
2
IN1
3
IN2
4
IN3
5
IN4
6
ACREF
7
DIAG
8
MSO
9
OVERRULE
10
DDDSEL
Fig.3 Pin configuration (SOT243-1).
2001 Jul 237
Fig.4 Pin configuration (SOT418-2).
Page 8
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
FUNCTIONAL DESCRIPTION
The TDA8586 is a multi-purpose power amplifier with four
amplifiers and 2 buffer stages, which can be connected in
the following configurations with high output power and
low distortion:
• Dual Bridge-Tied Load (BTL) amplifiers
• Quad Single-Ended (SE) amplifiers.
IntheBTLmodeofoperation,the2 bufferamplifiersactas
inverting amplifiers to complete the bridge across the front
amplifiers (OUT1 and OUT3) and the rear outputs (OUT2
and OUT4) enter a high-impedance state.
In the SE mode of operation, the buffers act as an AC
ground path thereby eliminating the need for series
capacitors on the speaker outputs.
Diagnostics:
• While the IC is in the mute mode, the diagnostic output
will signal the mode of operation when the IC is not
overruled
• In the on mode the diagnostic output will signal any fault
in the IC or if the output of any amplifier is clipping with
a distortion of 10% (or 2% depending on selected
clip-mode).
Special attention is given to the dynamic behaviour as
follows:
• Noise suppression during engine start
• No plops when switching from standby to on
• Slow offset change between mute and on (controlled by
MSO pin)
• Low noise levels, which are independent of the supply
voltage.
TDA8586
The presence of the load is measured after the transition
between standby and mute. The IC will determine if there
is an acceptable load on both outputs (OUT2 and OUT4).
If both outputs are unloaded, the IC will switch to a
2 speaker mode of operation (BTL mode), unless it is
overruled.
There are two options to overrule:
1. Before transition from mute to on, after a load
detection, pulling the diagnostic output above 9.5 V
will force the IC into 4 speaker mode
2. TDA8586TH: pulling the OVERRULE pin according
pinning table.
Care should be taken with the OVERRULE function as it
works during the on mode. If there is a 2 or 4 speaker
mode change during the on mode a large plop can be
heard on the speakers.
The ACREF input (common signal input) acts with the four
signal inputs (IN1 to IN4) to provide quasi differential
inputs. A capacitor must be connected to this pin of which
the ground pin should be connected to the ground at the
signal source (usually the ground at the audio signal
processor). This capacitor has a dual function. During the
speaker detection, the signal ground capacitor is used to
set the time constant of the measurement (and thus
determines the minimum required switch-on time).
The capacitorontheMSOpin allows the integrate function
to provide immunity to outside noises during load
detection.
Protections are included to avoid the IC being damaged at:
• Over temperature: Tj> 150 °C
• Short-circuit of the output pin(s) to ground or supply rail.
When short-circuited, the power dissipation is limited
• ESD protection (Human Body Model 3000 V and
Machine Model 300 V).
2001 Jul 238
Page 9
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
handbook, full pagewidth
state
condition
V
P
MSO
diagnostic
information
V
9 V
3 V
5 V
standby
P
0
0
0
mute
load detect
minimum 1 s
SE detection
BTL detection
mute
no load detect
BTL detected
SE detected
on
no clipping/shorts
on
clipping
TDA8586
on
short-circuit
diagnostic
overrule
mode select
amplifier
output
buffer/amplifier
output
10 V
0.5V
0.5V
5 V
The mode is overruled only from
BTL to SE when the diagnostic pin
is excited with a pulse of 10 V.
0
This voltage must remain present.
Whatever the load detection has found the mode of operation will be inverted.
0
P
0
P
0
Toggling between the 2 modes is possible.
short-circuit to supply
short-circuit over load
short-circuit to ground
short-circuit to supply
short-circuit over load
short-circuit to ground
MGR027
Fig.5 Timing diagram including diagnostics.
2001 Jul 239
Page 10
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
TDA8586
auto BTL/SE selection
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
P
V
DIAG
I
OSM
I
ORM
V
rp
V
sc
P
tot
T
j
T
stg
T
amb
Note
1. A large reverse current will flow, therefore external protection is needed (fuse and reverse diode).
supply voltageoperating818V
load dump protected;
−45V
see Fig.6
voltage on diagnostic pin−18V
non-repetitive peak output current−6A
repetitive peak output current−4A
reverse polarity voltagenote 1−6V
ACand DC short-circuit voltage of output pins
−18V
across loads and to ground or supply pins
total power dissipation−75W
junction temperature−150°C
storage temperature−55+150°C
operating ambient temperature−40+150°C
handbook, halfpage
45 V
V
P
14.4 V
t
r
t
f
MGL404
t (ms)
Fig.6 Load dump voltage waveform.
THERMAL CHARACTERISTICS
SYMBOLPARAMETERCONDITIONSVALUEUNIT
R
R
th(j-a)
th(j-c)
thermal resistance from junction to ambientin free air40K/W
thermal resistance from junction to case2K/W
2001 Jul 2310
Page 11
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
TDA8586
auto BTL/SE selection
CHARACTERISTICS
VP= 14.4 V; T
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supplies
V
P
I
q(tot)
I
stb
V
O
V
P(mute)
V
o
V
I
PIN MSO
V
MSO
I
MSO
Diagnostic; output buffer (open-collector); see Figs 7 to 8
V
DIAG(L)
I
LI
V
DIAG(or)
V
DIAG(4ch)
CD2clip detector LOWTHD mode; V
CD10clip detector HIGHTHD mode (default);
CLIP DETECT CONTROL PIN
V
DDDSEL
I
DDDSEL
Stereo BTL application (see Fig.7)
THDtotal harmonic distortionf
P
o
=25°C; fi= 1 kHz; RL= ∞; measured in test circuit of Fig.8; unless otherwise specified.
amb
operating supply voltage8.014.418V
total quiescent currentSE mode−140170mA
standby current−1100µA
DC output voltageVP= 14.4 V−7.0−V
low supply voltage mute6.07.08.0V
single-ended and bridge-tied
load output voltage
VP= 14.4 V; RL=4Ω
mute condition−−20mV
on condition−−100mV
DC input voltageVP= 14.4 V−4.0−V
voltage at pin MSOstandby condition0−0.8V
mute condition; note 12.03.04V
on condition8.0−10.5V
input currentmute pin at standby condition;
V
< 0.8 V
MSO
diagnostic output voltage LOW I
leakage currentV
=1mA−0.30.8V
sink
= 14.4 V−−1µA
DIAG
diagnostic override voltagein mute mode after load
−540µA
10.5−18V
detection
diagnostic4 channel indication
voltage
mute, after load detection with
4 speakers connected
>3V;
DIAG
−0.30.8V
0.523.5%
R=10kΩ
71013%
V
>3V; R=10kΩ
DIAG
voltage at DDD select pin to
obtain:
Input current DDD select pinV
10% DDD0−1V
2% DDD3−6V
DDDSEL
= 1 kHz; Po= 1 W; RL=4Ω−0.050.15%
i
45 Hz < f
=5V15−140µA
< 10 kHz; Po=1W;
i
−0.3−%
RL=4Ω; filter: f < 30 kHz
output powerVP= 14.4 V; RL=4Ω; note 2
THD = 0.5%1415−W
THD = 10%1721−W
2001 Jul 2311
Page 12
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
TDA8586
auto BTL/SE selection
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
G
v
∆G
v
α
cs
V
OO
V
n(o)
V
n(o)(mute)
V
o(mute)
SVRRsupply voltage ripple rejection: R
Z
i
Quad SE application (see Fig.8)
THDtotal harmonic distortionf
P
o
G
v
∆G
v
α
cs
V
OO
V
n(o)
V
n(o)(mute)
V
o(mute)
SVRRsupply voltage ripple rejectionR
voltage gainV
channel unbalanceV
=15mV313233dB
i(rms)
=15mV−0.70+0.7dB
i(rms)
channel separationPo= 2 W; fi= 1 kHz; RL=4Ω4555−dB
DC output offset voltageVP= 14.4 V; on condition−0100mV
V
= 14.4 V; RL=4Ω;
P
−1020mV
mute condition
noise output voltage onRs=1kΩ; VP= 14.4 V; note 3−100150µV
noise output voltage mutenote 3−020µV
output voltage muteV
2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
A
2
max.
3.5
3.50.35
3.2
e
(1)
bpc
A
A
4
3
+0.12
0.53
−0.02
0.40
0.32
0.23
D
16.0
15.8
11
w M
b
p
0510 mm
scale
(2)
D
1
13.0
12.6
D
1.1
0.9
(2)
E
E
2
11.1
10.9
1
6.2
5.8
E
2.9
2.5
Q
A
2
A
4
detail X
H
L
Q
1.7
1.5
v
0.25w0.25
e
E
14.5
13.9
p
1.1
0.8
2
1.27
L
x
0.03
(A3)
p
0.07
A
θ
yZ
2.5
2.0
θ
8°
0°
OUTLINE
VERSION
SOT418-2
IEC JEDEC EIAJ
REFERENCES
2001 Jul 2319
EUROPEAN
PROJECTION
ISSUE DATE
98-02-25
99-11-12
Page 20
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
SOLDERING
Introduction
Thistextgivesavery brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-holeandsurface mount componentsaremixedon
one printed-circuit board. Wave soldering can still be used
for certain surface mount ICs, but it is not suitable for fine
pitch SMDs. In these situations reflow soldering is
recommended.
Through-hole mount packages
SOLDERING BY DIPPING OR BY SOLDER WAVE
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joints for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
MANUAL SOLDERING
Apply the soldering iron (24 V or less) to the lead(s) of the
package, either below the seating plane or not more than
2 mm above it. If the temperature of the soldering iron bit
is less than 300 °C it may remain in contact for up to
10 seconds. If the bit temperature is between
300 and 400 °C, contact may be up to 5 seconds.
Surface mount packages
REFLOW SOLDERING
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
totheprinted-circuitboardbyscreenprinting,stencillingor
pressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,
convection or convection/infrared heating in a conveyor
type oven. Throughput times (preheating, soldering and
cooling) vary between 100 and 200 seconds depending
on heating method.
stg(max)
). If the
TDA8586
Typical reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 220 °C for
thick/large packages, and below 235 °C for small/thin
packages.
WAVE SOLDERING
Conventional single wave soldering is not recommended
forsurfacemountdevices (SMDs) or printed-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
To overcome these problems the double-wave soldering
method was specifically developed.
If wave soldering is used the following conditions must be
observed for optimal results:
• Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
• Forpackageswithleads on four sides, the footprintmust
be placed at a 45° angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
MANUAL SOLDERING
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300 °C. When using a dedicated tool, all other leads can
be soldered in one operation within 2 to 5 seconds
between 270 and 320 °C.
2001 Jul 2320
Page 21
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
TDA8586
auto BTL/SE selection
Suitability of IC packages for wave, reflow and dipping soldering methods
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the
2. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.
3. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
4. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
5. Wave soldering is only suitable for LQFP, QFP and TQFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
6. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
Objective dataDevelopmentThis data sheet contains data from the objective specification for product
Preliminary dataQualificationThis data sheet contains data from the preliminary specification.
Product dataProductionThis data sheet contains data from the product specification. Philips
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
(1)
STATUS
(2)
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
DEFINITIONS
DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
attheseoratanyother conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentationor warranty that such applicationswillbe
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductorscustomersusing or selling theseproducts
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
theuseofany of these products, conveys nolicenceortitle
under any patent, copyright, or mask work right to these
products,andmakesnorepresentationsorwarrantiesthat
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
2001 Jul 2322
Page 23
Philips SemiconductorsPreliminary specification
Power amplifier with load detection and
auto BTL/SE selection
NOTES
TDA8586
2001 Jul 2323
Page 24
Philips Semiconductors – a w orldwide compan y
Argentina: see South America
Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381, Fax. +1 800 943 0087
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 3341 299, Fax.+381 11 3342 553
For all other countries apply to: Philips Semiconductors,
Marketing Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
2001
Internet: http://www.semiconductors.philips.com
72
Printed in The Netherlands753503/03/pp24 Date of release: 2001 Jul 23Document order number: 9397750 08407
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