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TDA1562Q 데이터시트(Datasheet) 7 Page - NXP Semiconductors

부품명 TDA1562Q
상세내용  70 W high efficiency power amplifier with diagnostic facility
PDF  24 Pages
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제조사  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
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 2 page
background image
2003 Feb 12
2
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
FEATURES
• Very high output power, operating from a single low
supply voltage
• Low power dissipation, when used for music signals
• Switches to low output power at too high case
temperatures
• Few external components
• Fixed gain
• Differential inputs with high common mode rejection
• Mode select pin (on, mute and standby)
• Status I/O pin (class-H, class-B and fast mute)
• All switching levels with hysteresis
• Diagnostic pin with information about:
– Dynamic Distortion Detector (DDD)
– Any short-circuit at outputs
– Open load detector
– Temperature protection.
• No switch-on or switch-off plops
• Fast mute on supply voltage drops
• Quick start option (e.g. car-telephony/navigation)
• Low (delta) offset voltage at the outputs
• Load dump protection
• Short-circuit safe to ground, supply voltage and across
the load
• Low power dissipation in any short-circuit condition
• Protected against electrostatic discharge
• Thermally protected
• Flexible leads.
GENERAL DESCRIPTION
The TDA1562 is a monolithic integrated 70 W/4
Bridge-Tied Load (BTL) class-H high efficiency power
amplifier in a 17 lead DIL-bent-SIL plastic power package.
The device can be used for car audio systems (e.g.
car radios and boosters) as well as mains fed applications
(e.g. midi/mini audio combinations and TV sound).
QUICK REFERENCE DATA
VP = 14.4 V; RL =4 Ω; Rs =0 Ω; f = 1 kHz; Tamb =25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VP
supply voltage
operating; note 1
8
14.4
18
V
non-operating
−−
30
V
load dump
−−
45
V
Iq
quiescent current
on and mute; RL = open
circuit
110
150
mA
Istb
standby current
standby
350
µA
V
OO
output offset voltage
on and mute
−−
100
mV
∆VOO
delta output offset voltage
on
↔ mute
−−
30
mV
Gv
voltage gain
25
26
27
dB
Z
i(dif)
differential input impedance
90
150
k
Po
output power
THD = 0.5%
45
55
W
THD = 10%
60
70
W
THD
total harmonic distortion
Po =1W
0.03
%
Po =20W
0.06
%
DDD active
2.1
%
 3 page
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2003 Feb 12
3
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
Note
1. When operating at VP > 16 V, the output power must be limited to 85 W at THD = 10% (or minimum load is 6 Ω).
ORDERING INFORMATION
SVRR
supply voltage ripple rejection
on and mute
55
63
dB
CMRR
common mode rejection ratio
on
56
80
dB
ISRR
input signal rejection ratio
mute
80
100
dB
Vn(o)
noise output voltage
on
100
150
µV
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA1562Q
DBS17P
plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
SOT243-1
TDA1562Q/S10
DBS17P
plastic DIL-bent-SIL power package; 17 leads (lead length 7.7 mm)
SOT243-3
TDA1562ST
RDBS17P
plastic rectangular-DIL-bent-SIL power package; 17 leads (row
spacing 2.54 mm)
SOT577-2
TDA1562SD
RDBS17P
plastic rectangular-DIL-bent-SIL (reverse bent) power package;
17 leads (row spacing 2.54 mm)
SOT668-2
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
 4 page
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2003 Feb 12
4
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
POWER-
STAGE
PREAMP
STAT
VP*
VP*
75
k
+
C1
+
C1
FEEDBACK
CIRCUIT
TDA1562
POWER-
STAGE
CLASS-B
CLASS-H
FAST MUTE
TEMPERATURE
SENSOR
LOAD DUMP
PROTECTION
STANDBY
MUTE
ON
LOAD
DETECTOR
DYNAMIC
DISTORTION
DETECTOR
DIAGNOSTIC
INTERFACE
TEMPERATURE
PROTECTION
CURRENT
PROTECTION
LIFT-SUPPLY
LIFT-SUPPLY
disable
disable
16
MODE
4
1
IN
+
35
75
k
15 k
reference
voltage
PREAMP
+
2
IN
14
Vref
17
SGND
C2
+
C2
OUT
15
13
6
PGND1
PGND2
MGL264
12
11
DIAG
OUT
+
7
8
910
VP2
VP1
 5 page
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2003 Feb 12
5
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
PINNING
SYMBOL
PIN
DESCRIPTION
IN+
1
signal input (positive)
IN
2
signal input (negative)
C1
3
negative terminal of lift electrolytic
capacitor 1
MODE
4
mode select input
C1+
5
positive terminal of lift electrolytic
capacitor 1
PGND1
6
power ground 1
OUT+
7
positive output
DIAG
8
diagnostic output (open-collector)
VP1
9
supply voltage 1
VP2
10
supply voltage 2
OUT
11
negative output
PGND2
12
power ground 2
C2+
13
positive terminal of lift electrolytic
capacitor 2
Vref
14
internal reference voltage
C2
15
negative terminal of lift electrolytic
capacitor 2
STAT
16
status I/O
SGND
17
signal ground
Fig.2 Pin configuration.
handbook, halfpage
TDA1562Q
TDA1562ST
TDA1562SD
MGL263
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
IN
+
IN
C1
MODE
C1
+
PGND1
OUT
+
DIAG
VP1
VP2
OUT
PGND2
C2
+
Vref
C2
STAT
SGND
 6 page
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2003 Feb 12
6
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
FUNCTIONAL DESCRIPTION
The TDA1562 contains a mono class-H BTL output power
amplifier. At low output power, up to 18 W, the device
operates as a normal BTL amplifier. When a larger output
voltage swing is required, the internal supply voltage is
lifted by means of the external electrolytic capacitors. Due
to this momentarily higher supply voltage the obtainable
output power is 70 W.
In normal use, when the output is driven with music-like
signals, the high output power is only needed during a
small percentage of time. Under the assumption that a
music signal has a normal (Gaussian) amplitude
distribution, the reduction in dissipation is about 50% when
compared to a class-B output amplifier with the same
output power. The heatsink should be designed for use
with music signals. If the case temperature exceeds
120
°C the device will switch back from class-H to class-B
operation. The high power supply voltage is then disabled
and the output power is limited to 20 W.
When the supply voltage drops below the minimum
operating level, the amplifier will be muted immediately.
Mode select input (pin MODE)
This pin has 3 modes:
1. LOW for standby: the complete circuit is switched off,
the supply current is very low
2. MID for mute: the circuit is switched on, but the input
signal is suppressed
3. HIGH for on: normal operation, the input signal is
amplified by 26 dB.
When the circuit is switched from mute to on or vice versa
the actual switching takes place at a zero crossing of the
input signal. The circuit contains a quick start option, i.e.
when it is switched directly from standby to on, the
amplifier is fully operational within 50 ms (important for
applications like car telephony and car navigation).
Status I/O (pin STAT)
INPUT
This input has 3 possibilities:
1. LOW for fast mute: the circuit remains switched on, but
the input signal is suppressed
2. MID for class-B: the circuit operates as class-B
amplifier, the high power supply voltage is disabled,
independent of the case temperature
3. HIGH for class-H: the circuit operates as class-H
amplifier, the high power supply voltage is enabled,
independent of the case temperature.
When the circuit is switched from fast mute to class-B/H or
vice versa the switching is immediately carried out. When
the circuit is switched from class-B to class-H or vice versa
the actual switching takes place at a zero crossing of the
input signal.
OUTPUT
This output has 3 possibilities:
1. LOW for mute: acknowledge of muted amplifier
2. MID for class-B: the circuit operates as class-B
amplifier, the high power supply voltage is disabled,
caused by the case temperature Tc > 120 °C
3. HIGH for class-H: the circuit operates as class-H
amplifier, the high power supply voltage is enabled,
because the case temperature Tc < 120 °C.
When the circuit is switched from class-B to class-H or vice
versa the actual switching takes place at a zero crossing
of the input signal.
The status I/O pins of maximum 8 devices may be tied
together for synchronizing purposes.
 7 page
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2003 Feb 12
7
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
Fig.3 Switching characteristics.
handbook, full pagewidth
on
mute
0
supply
voltage
reference
voltage
mode select
input
status I/O
input
HIGH
MID
LOW
HIGH
MID
class-H (Tc < 120 °C)
class-B (Tc > 120 °C)
LOW
status I/O
output
HIGH
MID
LOW
Vref
VRT
0
output voltage
across load
0
zero crossing change
class-B/H operation
zero crossing mute
function
fast mute
function
quick start
mute
supply mute
function
MGL272
 8 page
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2003 Feb 12
8
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
Diagnostic output (pin DIAG)
DYNAMIC DISTORTION DETECTOR (DDD)
At the onset of clipping of the output stages, the DDD
becomes active. This information can be used to drive a
sound processor or DC-volume control to attenuate the
input signal and so limit the distortion.
SHORT-CIRCUIT PROTECTION
When a short-circuit occurs at the outputs to ground or to
the supply voltage, the output stages are switched off.
They will be switched on again approximately 20 ms after
removing the short-circuit. During this short-circuit
condition the diagnostic output is continuously LOW.
When a short-circuit occurs across the load, the output
stages are switched off during approximately 20 ms. After
that time is checked during approximately 50
µs whether
the short-circuit is still present. During this short-circuit
condition the diagnostic output is LOW for 20 ms and
HIGH for 50
µs. The power dissipation in any short-circuit
condition is very low.
TEMPERATURE DETECTION
Just before the temperature protection becomes active the
diagnostic output becomes continuously LOW.
LOAD DETECTION
Directly after the circuit is switched from standby to mute
or on, a built-in detection circuit checks whether a load is
present. The results of this check can be detected at the
diagnostic output, by switching the mode select input in the
mute mode.
Since the diagnostic output is an open-collector output,
more devices can be connected.
Fig.4 Diagnostic information.
handbook, full pagewidth
HIGH
MID
LOW
mode select
input
diagnostic
output
output voltage
across load
0
HIGH
LOW
no load
clipping signal
short-circuit to
supply or ground
short-circuit
across load
t
MGL265
 9 page
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2003 Feb 12
9
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
Fig.5 Behaviour as a function of temperature.
handbook, full pagewidth
class-H
maximum output
voltage swing
diagnostic
output
status I/O: high
status I/O: open
MGL266
class-B
0
HIGH
LOW
status I/O
output
HIGH
MID
LOW
120
145
Tj (°C)
150
160
100
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Notes
1. When operating at VP > 16 V, the output power must be limited to 85 W at THD = 10% (or minimum load is 6 Ω).
2. Tj is a theoretical temperature which is based on a simplified representation of the thermal behaviour of the device.
Tj =Tc +P × Rth(j-c), where Rth(j-c) is a fixed value to be used for the calculation of Tj. The rating for Tj limits the
allowable combinations of power dissipation P and case temperature Tc (in accordance with IEC 60747-1).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VP
supply voltage
operating; note 1
18
V
non-operating
30
V
load dump; tr > 2.5 ms; t = 50 ms
45
V
IOSM
non-repetitive peak output current
10
A
IORM
repetitive peak output current
8A
Vsc
short-circuit safe voltage
18
V
Tstg
storage temperature
−55
+150
°C
Tamb
ambient temperature
−40
−°C
Tj
junction temperature
note 2
150
°C
Ptot
total power dissipation
60
W
 10 page
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2003 Feb 12
10
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
QUALITY SPECIFICATION
Quality in accordance with
“SNW-FQ-611D”, if this type is used as an audio amplifier.
THERMAL CHARACTERISTICS
DC CHARACTERISTICS
VP = 14.4 V; RL =4 Ω; Tamb =25 °C; measurements in accordance with Fig.9; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth(j-c)
thermal resistance from junction to case
1.5
K/W
Rth(j-a)
thermal resistance from junction to ambient
in free air
40
K/W
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies VP1 and VP2
VP
supply voltage
8
14.4
18
V
VP(th+)
supply threshold voltage
mute
→ on
7
9V
VP(th−)
supply threshold voltage
on
→ mute
7
9V
VP(H1)
hysteresis
(Vth+ − Vth−)−
200
mV
Iq
quiescent current
on and mute;
RL = open circuit
110
150
mA
Istb
standby current
standby
350
µA
Amplifier outputs OUT+ and OUT
VO
output voltage
on and mute
6.5
V
V
OO
output offset voltage
on and mute
−−
100
mV
∆V
OO
delta output offset voltage
on
↔ mute
−−
30
mV
Mode select input MODE
VI
input voltage
0
VP
V
II
input current
VMODE = 14.4 V
15
20
µA
Vth1+
threshold voltage 1+
standby
→ mute
1
2.2
V
Vth1−
threshold voltage 1
mute
→ standby
0.9
2V
VmsH1
hysteresis
(Vth1+ − Vth1−)−
200
mV
Vth2+
threshold voltage 2+
mute
→ on
3.3
4.2
V
Vth2−
threshold voltage 2
on
→ mute
3.3
4V
VmsH2
hysteresis
(Vth2+ − Vth2−)−
200
mV
Status I/O STAT
PIN STAT AS INPUT
Vst
input voltage
0
VP
V
Ist(H)
HIGH-level input current
VSTAT = 14.4 V
3.5
4.5
mA
Ist(L)
LOW-level input current
VSTAT =0V
−−350
−400
µA
Vth1+
threshold voltage 1+
fast mute
→ class-B −−
2V
Vth1−
threshold voltage 1
class-B
→ fast mute 1
−−
V
VstH1
hysteresis
(Vth1+ − Vth1−)−
200
mV
 11 page
background image
2003 Feb 12
11
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
Vth2+
threshold voltage 2+
class-B
→ class-H
−−
4.2
V
Vth2−
threshold voltage 2
class-H
→ class-B
3.3
−−
V
VstH2
hysteresis
(Vth2+ − Vth1−)−
200
mV
PIN STAT AS OUTPUT
Ist(mute)
mute acknowledge sink current
2.2
−−
mA
Vst(mute)
mute acknowledge output voltage
Ist = 2.2 mA
−−
0.5
V
Ist(clB)
class-B operation output current
15
−−µA
Vst(clB)
class-B operation output voltage
Ist =15 µA
2.0
3.0
V
Ist(clH)
class-H operation source current
−140
−−µA
Vst(clH)
class-H operation output voltage
Ist = −140 µAVP − 2.5 −−
V
Tc(th)
threshold case temperature sensor
120
−°C
Diagnostic output DIAG
VDIAG
output voltage
active LOW
−−
0.6
V
RL
load resistance for open load detection
100
−−Ω
Tj(th)
threshold junction temperature sensor
145
−°C
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Fig.6 Supply voltage transfer characteristic.
handbook, full pagewidth
VPH1
Vth−
Vth+
MGL267
fast mute
on
VP




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