Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 2-channel (stereo) or 4-channel (Quad) Class D HTSSOP 56

FEATURES

APPLICATIONS

DESCRIPTION

PWM_AP

PWM_BP

DVDD

AGND

OUTA

OUTB

OUTC

OUTD

HIZ

FAULT

TAS5602

DigitalPWMProcessor

Control

Inputs

IS

OUTA_P

OUTA_N

OUTB_P

OUTB_N

VALID

ERROR

PWM_CP

PWM_DP

Filter

BSA

BSB

DVDD

PVCC

AVCC

GPIO

PGND

BYPASS

BSC

BSD

DGND

VCLAMP_AB

VCLAMP_CD

3-4.2V

10-26V

THERM_WARN

SE/BTL

RESET

TAS5602

www.ti.com

................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008

20W STEREO DIGITAL AMPLIFIER POWER STAGE

• Integrated Self-Protection Circuits Including

Overvoltage, Undervoltage, Overtemperature,

• Supports Multiple Output Configurations

and Short Circuit With Error Reporting

– 2 × 20-W into a 8- Ω BTL Load at 18 V

– 4 × 10-W into a 4- Ω SE Load at 18 V

– 2 × 10W (SE) + 1 × 20W (BTL) at 18 V

• Flat-Panel, Rear-Projection, and CRT TV

• Thermally Enhanced Package

• Consumer Audio Applications

– DCA (56-pin HTTSOP)

• Wide Voltage Range: 10V – 26V

– No Separate Supply Required for Gate

The TAS5602 is a 20-W (per channel) efficient,

stereo digital amplifier power stage for driving 4

Drive

single-ended speakers, 2 bridge-tied speakers, or

• Efficient Class-D Operation Eliminates Need

combination of single and bridge-tied loads. The

for Heat Sinks

TAS5602 can drive a speaker with an impedance as

• Closed Loop Power Stage Architecture

low as 4 Ω . The high efficiency of the TAS5602

eliminates the need for an external heat sink.

– Improved PSRR Reduces Power Supply

Performance Requirements

A simple interface to a digital audio PWM processor

– High Damping Factor Provides for Tighter,

is shown below. The TAS5602 is fully protected

More Accurate Sound With Improved Bass against faults with short-circuit protection and thermal

protection as well as overvoltage and undervoltage

Response

protection. Faults are reported back to the processor

– Constant Output Power Over Variation in

to prevent devices from being damaged during

Supply Voltage

overload conditions.

• Single Ended Inputs

SIMPLIFIED APPLICATION CIRCUIT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2 PowerPad is a trademark of Texas Instruments.

3 System Two, Audio Precision are trademarks of Audio Precision, Inc.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (28 pages)

PAGE 1
TAS5602 www.ti.com...................................................................................................................................................
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 TERMINAL FUNCTIONS (continued) TERMINAL NO. I/O DESCRIPTION NAME 17 HIZ – Forces the output to high impedance state. Use this terminal to quickly (<1 ms) disable the output switching in cases like power fail.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) Supply Voltage Input Voltage VALUE UNIT DVDD –0.3 to 5 V AVCC, PVCC –0.3 to 30 V –0.3 to DVDD + 0.
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TAS5602 www.ti.com...................................................................................................................................................
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 APPLICATION CIRCUITS PA1 PGND OUTB OUTB L2 22uH 0.68 mF PVCC NC PWM_BP BYPASS 16 PWM_DP 17 HIZ 18 RESET 19 FAULT 20 AGND THERM WARN 21 22 PGND 0.1ufd/50V 220ufd/50V C13 PVCC PGND BSD 41 40 AGND 1.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com PA1 OUTB OUTB NC 19 FAULT 20 3.3V 10K THERM WARN 21 22 PGND PGND 0.1ufd/50V 220ufd/50V C13 PVCC 40 C17 AGND R1 4.7K AGND VCLAMP_CD 39 BSC HIZ RESET 38 37 PVCCC 36 PVCCC PGND 1.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 TYPICAL CHARACTERISTICS THD+N Vs. Frequency (BTL) THD+N Vs. Frequency (BTL) 10 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 VCC = 12 V RL = 8 Ω 1 P=5W P = 2.5 W 0.1 P = 0.5 W 0.01 0.001 20 100 1k VCC = 18 V RL = 8 Ω 1 P=5W 0.1 0.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS (continued) THD+N Vs. Output Power (BTL) THD+N Vs. Output Power (BTL) 10 THD+N − Total Harmonic Distortion + Noise − % THD+N − Total Harmonic Distortion + Noise − % 10 VCC = 18 V RL = 8 Ω 1 0.1 f = 1 kHz f = 10 kHz 0.01 f = 20 Hz 0.001 0.01 0.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 TYPICAL CHARACTERISTICS (continued) Output Power Vs. Supply Voltage (BTL) Crosstalk Vs.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS (continued) PSRR Vs. Frequency (BTL) THD+N Vs. Frequency (SE) −20 10 RL = 8 Ω VCC = 18 V THD+N − Total Harmonic Distortion + Noise − % PSRR − Power Supply Rejection Ratio − dB 0 −40 −60 −80 −100 −120 20 100 1k PO = 1 W RL = 4 Ω 1 VCC = 12 V 0.1 0.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 TYPICAL CHARACTERISTICS (continued) PSRR Vs. Frequency (SE) PSRR − Power Supply Rejection Ratio − dB 0 −20 RL = 4 Ω VCC = 24 V −40 −60 −80 −100 −120 20 100 1k 10k 20k f − Frequency − Hz G025 Figure 19.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com APPLICATION INFORMATION CLOSED-LOOP POWER STAGE CHARACTERISTICS The TAS5602 is PWM input power stage with a closed loop architecture. A 2nd order feedback loop varies the PWM output duty cycle with changes in the supply voltage.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 TAS5602 Fault timing chart Normal Operation Overcurrent detected? No TEMP > 125°C ? No Yes Yes RESET = L for > 1μs? TEMP < 105°C ? Yes TEMP < 130°C ? AVCC < 8.4 V ? No Yes Disable Output . No No No Yes Set THERM_WARN = L. Disable Output . Latch FAULT= L.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com Protection Mechanisms in the TAS5602 • • • • SCP (short-circuit protection, OCP) protects against shorts across the load, to GND, and to PVCC. OTP turns off the device if Tdie (typical) > 150°C. UVP turns off the device if PVCC (typical) < 8.4 V OVP turns off the device if PVCC (typical) > 27.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 Common Mode Resonance The BTL filter shown above is an excellent, low-cost way to attenuate the high frequency energy from the Class D output stage while passing the audio signal cleanly to the speakers.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com The circuit is designed for a CBYP value of 1 µF for best pop performance. The input capacitors should have the same value. A ceramic or tantalum low-ESR capacitor is recommended.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 THERMAL AND PACKAGE INFORMATION The TAS5602DCA package is the DCA 56-pin TSSOP package. To estimate the junction temperature using measurable parameters, a thermal metric θJT is modeled, which relates the temperature at the top of the package to the junction temperature, TJ. For TAS5602DCA, θJT = 0.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com The generator output and amplifier input must be ac-coupled. However, the EVMs already have the ac-coupling capacitors, (CIN), so no additional coupling is required.
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TAS5602 www.ti.com................................................................................................................................................... SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008 SE Input and SE Output (TAS5602 SE Configuration) The SE input and output configuration is used with class-AB amplifiers. A block diagram of a fully SE measurement circuit is shown in Figure 24. SE inputs normally have one input pin per channel.
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TAS5602 SLAS593B – JUNE 2008 – REVISED NOVEMBER 2008................................................................................................................................................... www.ti.com DIFFERENTIAL INPUT AND BTL OUTPUT (TAS5602 BTL Configuration) Many of the class-D APAs and many class-AB APAs have differential inputs and bridge-tied-load (BTL) outputs. Differential inputs have two input pins per channel and amplify the difference in voltage between the pins.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device TAS5602DCAR Package Package Pins Type Drawing SPQ HTSSOP 2000 DCA 56 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 24.4 Pack Materials-Page 1 8.6 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 15.6 1.8 12.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TAS5602DCAR HTSSOP DCA 56 2000 367.0 367.0 45.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.