Philips TDA1562Q-N1, TDA1562Q-N2-S10, TDA1562Q-N1-S10, TDA1562Q-N2 Datasheet

DATA SH EET

Preliminary speciﬁcation File under Integrated Circuits, IC01

1998 Apr 07

INTEGRATED CIRCUITS

TDA1562Q

70 W high efficiency power amplifier with diagnostic facility

1998 Apr 07 2

Philips Semiconductors Preliminary speciﬁcation

70 W high efﬁciency power ampliﬁer with diagnostic facility

TDA1562Q

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 TDA1562Q is a monolithic integrated 70 W/4 Ω 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, radio and boosters) as well as mains fed applications (e.g. midi/mini audio combinations and TV sound).

QUICK REFERENCE DATA

Test conditions: V

= 14.4 V; RL=4Ω; Rs=0Ω; f = 1 kHz; T

amb

=25°C; unless otherwise speciﬁed.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

supply voltage operating 8 14.4 18 V

non-operating −−30 V load dump −−45 V

q(tot)

total quiescent current on and mute;

RL= open circuit

− 110 150 mA

stb

standby current standby − 150µA

V

 output offset voltage on and mute −−100 mV

∆V

 delta output offset voltage on ↔ mute −−30 mV

voltage gain 25 26 27 dB

Z

i(dif)

 differential input impedance 90 150 − kΩ

output power THD = 0.5% 45 55 − W

THD = 10% 60 70 − W

THD total harmonic distortion P

=1W − 0.03 − %

=20W − 0.06 − %

DDD active − 10 − % SVRR supply voltage ripple rejection on and mute 60 70 − dB CMRR common mode rejection ratio on 70 80 − dB ISRR input signal rejection ratio mute 80 90 − dB V

n(o)

noise output voltage on − 100 150 µV

1998 Apr 07 3

Philips Semiconductors Preliminary speciﬁcation

70 W high efﬁciency power ampliﬁer with diagnostic facility

TDA1562Q

ORDERING INFORMATION

BLOCK DIAGRAM

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA1562Q DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1

Fig.1 Block diagram.

handbook, full pagewidth

POWERSTAGE

PREAMP

status I/O

VP*

75 kΩ

−

C1+C1−

FEEDBACK

CIRCUIT

TDA1562Q

POWERSTAGE

CLASS-B CLASS-H

FAST MUTE

TEMPERATURE

SENSOR

LOAD DUMP

PROTECTION

STANDBY

MUTE

LOAD

DETECTOR

DYNAMIC

DISTORTION

DETECTOR

DIAGNOSTIC

INTERFACE

TEMPERATURE

PROTECTION

CURRENT

PROTECTION

LIFT-SUPPLY

disable

mode

select

IN+

75 kΩ

15 kΩ

reference voltage

PREAMP

−

IN−

ref

signal

GND

C2+C2−

OUT−

15 13 6

PGND1 PGND2

MGL264

diagnostic

OUT+

910

1998 Apr 07 4

Philips Semiconductors Preliminary speciﬁcation

70 W high efﬁciency power ampliﬁer with diagnostic facility

TDA1562Q

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) V

9 supply voltage 1

10 supply voltage 2 OUT− 11 negative output PGND2 12 power ground 2 C2+ 13 positive terminal of lift electrolytic

capacitor 2

ref

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

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

OUT−

PGND2

C2+ V

ref

C2−

STAT

SGND

1998 Apr 07 5

Philips Semiconductors Preliminary speciﬁcation

70 W high efﬁciency power ampliﬁer with diagnostic facility

TDA1562Q

FUNCTIONAL DESCRIPTION

The TDA1562Q 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, ‘standby’: the complete circuit is switched off, the supply current is very low

2. MID, ‘mute’: the circuit is switched on, but the input signal is suppressed

3. HIGH, ‘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 input (pin STAT)

NPUT

This input has 3 possibilities:

1. LOW, ‘fast mute’: the circuit remains switched on, but the input signal is suppressed

2. MID, ‘class-B’: the circuit operates as class-B amplifier, the high power supply voltage is disabled, independent of the case temperature

3. HIGH, ‘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.

UTPUT

This output has 3 possibilities:

1. LOW, ‘mute’: acknowledge of muted amplifier

2. MID, ‘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, ‘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.

1998 Apr 07 6

Philips Semiconductors Preliminary speciﬁcation

70 W high efﬁciency power ampliﬁer with diagnostic facility

TDA1562Q

Fig.3 Switching characteristics.

handbook, full pagewidth

mute

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

ref

VRT

output voltage

across load

zerocross change

class B/H-operation

zerocross mute

function

fast mute

function

quick start

mute

supply mute

function

MGL272

+ 14 hidden pages