4 x 50 W MOSFET quad bridge power amplifier

Features:

• High output power capability:

– 4 x 50 W/4  max.
– 4 x 30 W/4  @ 14.4 V, 1 kHz, 10 %
– 4 x 80 W/2  max.
– 4 x 55 W/2  @ 14.4V, 1 kHz, 10 %

• MOSFET output power stage
• Excellent 2  driving capability
• Hi-Fi class distortion
• Low output noise
• ST-BY function
• Mute function
• Automute at min. supply voltage detection
• Low external component count:

– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ On board 0.35 A high side driver
Protections:

• Output short circuit to gnd, to Vs, across the load
• Very inductive loads
• Overrating chip temperature with soft thermal limiter
• Output DC offset detection
• Load dump voltage
• Fortuitous open gnd
• Reversed battery

Circuit Diagram:

4 x 50 W MOSFET quad bridge power amplifier

Audio Circuit Diagram 4x50W TDA8594

General description:

The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power amplifier made in BCDMOS technology. It contains four independent amplifiers in BTL configuration. Through the I2C-bus, diagnosis of temperature warning and clipping level is fully programmable and the information available via two diagnostic pins is selectable. The status of each amplifier (output offset, load or no load, short-circuit or speaker incorrectly connected) can be read separately.

Features and benefits:

• Operates in legacy mode (non I2C-bus) and I2C-bus mode (3.3 V and 5 V compliant)
• Three hardware-programmable I2C-bus addresses
• Drives 4  or 2  loads
• Speaker fault detection
• Independent short-circuit protection per channel
• Loss of ground and open VP safe (with 200 m series impedance and a supply  decoupling capacitor of 2200 F maximum)
• All outputs short-circuit proof to ground, supply voltage and across the load
• All pins short-circuit proof to ground
• Temperature-controlled gain reduction to prevent audio holes at high junction  temperatures
• Low battery voltage detection
• Offset detection
• This part has been qualified in accordance with AEC-Q100

Circuit Diagram:

Audio Circuit Diagram 4x50W TDA8594

4 x 50 Watt power amplifier and multiple voltage regulator

FEATURES

• I2C-bus control
• Can drive a 2 Ω load with a battery voltage of up to 16 V and a 4 Ω load with a battery voltage of up to 18 V
• DC load detection, open, short and present
• AC load (tweeter) detection
• Programmable clip detect; 1 % or 4 %
• Programmable thermal protection pre-warning
• Independent short-circuit protection per channel
• Low gain line driver mode (20 dB)
• Loss-of-ground and open VP safe
• All outputs protected from short-circuit to ground, to VP or across the load
• All pins protected from short-circuit to ground
• Soft thermal-clipping to prevent audio holes
• Low battery detection.
• Voltage regulators

PROTECTION

• If connection to the battery voltage is reversed, all regulator voltages will be zero
• Able to withstand voltages at the output of up to 18 V (supply line may be short-circuited)
• Thermal protection to avoid thermal breakdown
• Load-dump protection
• Regulator outputs protected from DC short-circuit to ground or to supply voltage
• All regulators protected by foldback current limiting
• Power switches protected from loss-of-ground.

APPLICATIONS

• Boost amplifier and voltage regulator for car radios and CD/MD players.

GENERAL DESCRIPTION

Amplifiers The TDA8588 has a complementary quad audio power amplifier that uses BCDMOS technology. It contains four amplifiers configured in Bridge Tied Load (BTL) to drive speakers for front and rear left and right channels. The I2C-bus allows diagnostic information of each amplifier and its speaker to be read separately. Both front and both rear channel amplifiers can be configured independently in line driver mode with a gain of 20 dB (differential output).

Voltage regulators

• The TDA8588 has a multiple output voltage regulator with two power switches. The voltage regulator contains the following:
• Four switchable regulators and one permanently active regulator (microcontroller supply)
• Two power switches with loss-of-ground protection
• A reset output that can be used to communicate with a microcontroller.
• The quiescent current has a very low level of 150 µA with only regulator 2 active.

Circuit Diagram:

Application circuit 4 x 50 Watt power amplifier and multiple voltage regulator

Bottom of printed-circuit board layout of test and application circuit showing components viewed from

bottom

Bottom of printed-circuit board layout of test and application circuit showing copper layer viewed from top

Top of printed-circuit board layout of test and application circuit showing components viewed from top

Bottom of printed-circuit board layout of test and application circuit showing copper layer viewed from top

4 x 50 W MOSFET quad bridge power amplifier

Features

• High output power capability:
• 4 x 50 W/4  max.
• 4 x 30 W/4  @ 14.4 V, 1 kHz, 10 %
• 4 x 80 W/2  max.
• 4 x 55 W/2  @ 14.4V, 1 kHz, 10 %
• MOSFET output power stage
• Excellent 2  driving capability
• Hi-Fi class distortion
• Low output noise
• ST-BY function
• Mute function
• Automute at min. supply voltage detection
• Low external component count:
• Internally fixed gain (26 dB)
• No external compensation
• No bootstrap capacitors
• On board 0.35 A high side driver
• Output short circuit to gnd, to Vs, across the load
• Very inductive loads
• Overrating chip temperature with soft thermal limiter
• Output DC offset detection
• Load dump voltage
• Fortuitous open gnd
• Reversed battery

Circuit Diagram

4 x 50 W MOSFET quad bridge power amplifier

4 x 50 W TDA7567

Features:

Multipower BCD technology

MOSFET output power stage

DMOS power output

Differential Input

New high efficiency (class SB)

High output power capability 4x28 W/4  @ 

14.4 V, 1 kHz, 10% THD, 4x50 W MAX power 

Max. output power 4x72 W/2 

Full I2C bus driving:

Independent front/rear soft play/mute

Selectable gain 26 dB /16 dB (for low noise line output function)

High efficiency enable/disable

I2C bus digital diagnostics (including DC and AC load detection)

Operates both in I2C and non-I2C bus mode

Two selectable I2C bus addresses

Full fault protection

DC offset detection

Four independent short circuit protection

Clipping detector pin with selectable threshold (2 %/10 %)

Standby/mute pin

Linear thermal shutdown with multiple thermal warning

ESD protection

Description:

The TDA7567PD is a new BCD technology quad bridge power amplifier in PowerSO36 package specially intended for automotive applications.Thanks to the DMOS output stage the TDA7567PD has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 % when compared to the level provided by conventional class AB solutions. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.The I2C bus can be disabled and the device can be controlled by standby/mute pin.

Circuit Diagram

4 x 50 W TDA7567

4 x 50W quad power amplifier TDA7564B

Features:

■ Multipower BCD technology

■ MOSFET output power stage

■ DMOS power output

■ New high efficiency (class SB)

■ High output power capability 4x28 W/4  @ 

14.4 V, 1 kHz, 10 % THD, 4x50 W max, power 

■ Max. output power 4x72 W/2 

■ Full I2C bus driving:

– Standby

– Independent front/rear soft play/mute

– Selectable gain (for low noise line output 

function)

– High efficiency enable/disable

– I2C bus digital diagnostics (including AC 

and DC load detection)

■ Full fault protection

■ DC offset detection

■ Four independent short circuit protection

■ Clipping detector (2 %/10 %)

■ Linear thermal shutdown with multiple thermal 

warning

■ ESD protection

Description:

The TDA7564B is a new BCD technology quad bridge type of car radio amplifier in Flexiwatt25 / PowerSO36 package specially intended for car radio applications. Thanks to the DMOS output stage the TDA7564B has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50% when compared to the level provided by conventional class AB solutions. This device is equipped with a full diagnostics array that communicates the status of each speaker through the I2C bus.

Circuit Diagram:

4 x 50W quad power amplifier TDA7564B

4 x 50 W multifunction quad power amplifier with built-in diagnostics feature

Features:

■ Multipower BCD technology

■ MOSFET output power stage

■ DMOS power output

■ New high efficiency (class SB)

■ High output power capability 4 x 28 W / 4  @ 

14.4 V, 1 kHz, 10 % THD, 4 x 50 W max power 

■ Max. output power 4 x 72 W / 2 

■ Full I2C bus driving:

– Standby

– Independent front/rear soft play/mute

– Selectable gain 30 dB / 16 dB (for low noise 

line output function)

– High efficiency enable/disable

– I2C bus digital diagnostics (including DC 

and AC load detection)

■ Full fault protection

■ DC offset detection

■ Four independent short circuit protection

■ Clipping detector pin with selectable threshold 

(2 % / 10 %)

■ Standby/mute pin

■ Linear thermal shutdown with multiple thermal 

warning

■ ESD protection

Description:

The TDA7563B is a new BCD technology quad bridge type of car radio amplifier in Flexiwatt27 & PowerSO36 packages specially intended for car radio applications. Thanks to the DMOS output stage the TDA7563B has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 % when compared to the level provided by conventional class AB solutions.

This device is equipped with a full diagnostics array that communicates the status of each  speaker through the I2C bus.

Circuit Diagram:

4 x 50 W multifunction quad power amplifier  with built-in diagnostics feature

4 x 49 W quad bridge car radio amplifier

General Description:

The TDA7386 is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed 

for high end car radio applications. Based on a fully complementary PNP/NPN  configuration, the TDA7386 allows a rail to rail  output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.

Circuit Diagram:

4 x 49 W quad bridge car radio amplifier