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Philips TDA8925 Datasheet

Power stage 2x15 to 25 w class-d audio amplifier
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DATA SHEET
TDA8925
Power stage 2 x 15 to 25 W class-D
audio amplifier
Product specification
Supersedes data of 2004 Jan 05
INTEGRATED CIRCUITS
2004 May 06

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  Summary of Contents for Philips TDA8925

  • Page 1 INTEGRATED CIRCUITS DATA SHEET TDA8925 Power stage 2 x 15 to 25 W class-D audio amplifier Product specification 2004 May 06 Supersedes data of 2004 Jan 05...
  • Page 2: Table Of Contents

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier CONTENTS TEST AND APPLICATION INFORMATION 15.1 SE application FEATURES 15.2 Package ground connection APPLICATIONS 15.3 Output power 15.4 Reference design GENERAL DESCRIPTION 15.5 Reference design bill of material QUICK REFERENCE DATA 15.5.1...
  • Page 3: Features

    FEATURES GENERAL DESCRIPTION • High efficiency (> 94 %) The TDA8925 is a switching power stage for a high efficiency class-D audio power amplifier system. • Operating voltage from ±7.5 V to ±30 V With this power stage a compact 2 × 15 W self oscillating •...
  • Page 4: Contents

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier BLOCK DIAGRAM V DD2 V DD1 handbook, full pagewidth TDA8925 BOOT1 DRIVER HIGH CONTROL OUT1 HANDSHAKE DRIVER REL1 STAB temp V SS1 TEMPERATURE SENSOR...
  • Page 5: Pinning

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier PINNING SYMBOL DESCRIPTION digital switch input; channel 1 REL1 digital control output; channel 1 handbook, halfpage DIAG digital open-drain output for REL1 overtemperature and overcurrent...
  • Page 6: Functional Description

    The TDA8925 is a two-channel audio power amplifier Temperature and short-circuit protection sensors are system using the class-D technology (see Fig.1). included in the TDA8925. In the event that the maximum current or maximum temperature is exceeded the The power stage TDA8925S is used for driving the diagnostic output is pulled down to V .
  • Page 7: Limiting Values

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier LIMITING VALUES In accordance with the Absolute Maximum Rate System (IEC 60134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT − ±30 supply voltage − ±30...
  • Page 8: Dc Characteristics

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 12 DC CHARACTERISTICS = ±15 V; T = 25 °C; measured in test diagram of Fig.4; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP.
  • Page 9: Ac Characteristics

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 13 AC CHARACTERISTICS = ±15 V; T = 25 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Single-ended application; note 1 = 8 Ω...
  • Page 10: Switching Characteristics

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 14 SWITCHING CHARACTERISTICS = ±15 V; T = 25 °C; measured in Fig.4; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT PWM outputs (pins OUT1 and OUT2); see Fig.3 −...
  • Page 11 _white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ... V DD2 V DD1 TDA8925 BOOT1 12 kΩ DRIVER...
  • Page 12: Se Application

    Reference design The reference design for a self oscillating class-D system for the TDA8925 is shown in Fig.5. The Printed-Circuit Board (PCB) layout is shown in Figs 6, 7 and 8. The bill of materials is given in Section 15.5.1.
  • Page 13 5.6 Ω 22 Ω 470 nF 220 nF (35 V) 2.2 nF 2 kΩ STAB (U1,9) 1 kΩ 560 pF 3.9 kΩ 560 pF 150 Ω 2.2 nF 10 kΩ mdb614 Fig.5 SE self oscillating class-D system application diagram for TDA8925.
  • Page 14 Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier handbook, full pagewidth pin 1 OUT1 OUT2 − − 22 V V DD Bottom silk MDB615 Fig.6 Printed-circuit board (bottom silk) layout for TDA8925ST.
  • Page 15: Reference Design Bill Of Material

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier handbook, full pagewidth TDA8925ST state of D art V P typ +/- 15 V 2 x 15 W in 8 Ω single layer demo PCB v2r4...
  • Page 16: Printed-Circuit Board

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier COMPONENT DESCRIPTION TYPE COMMENTS C28, C29, C30, 560 pF/100 V SMD0805 50 V is OK C19, C20, C21, 2.2 nF/50 V SMD0805 C22, C39, C42...
  • Page 17: Curves Measured In Reference Design

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 15.6 Curves measured in reference design MDB618 MDB620 handbook, halfpage handbook, halfpage THD + N THD + N −1 −1 −2 −2 −3 −3 −2...
  • Page 18 Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier MDB621 MDB623 handbook, halfpage handbook, halfpage α (dB) (dB) −20 −40 −60 −80 −100 −2 −1 P o (W) f i (Hz) 2 × 8 Ω SE; V = ±15 V.
  • Page 19: Package Outlines

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 16 PACKAGE OUTLINES RDBS17P: plastic rectangular-DIL-bent-SIL power package; 17 leads SOT577-2 (row spacing 2.54 mm) non-concave view B: mounting base side 10 mm scale...
  • Page 20 Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 7.7 mm) SOT243-3 non-concave view B: mounting base side 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT 17.0...
  • Page 21: Soldering

    Philips Semiconductors Product specification Power stage 2 x 15 to 25 W class-D TDA8925 audio amplifier 17 SOLDERING The total contact time of successive solder waves must not exceed 5 seconds. 17.1 Introduction to soldering through-hole mount packages The device may be mounted up to the seating plane, but...
  • Page 22: Data Sheet Status

    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. 3. For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
  • Page 23 Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com. © Koninklijke Philips Electronics N.V. 2004 SCA76 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.