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INTEGRATED CIRCUITS
DATA SHEET
TDA8928J
Power stage 2 x 10 or 1 x 20 W
class-D audio amplifier
Preliminary specification 2004 May 05
Supersedes data of 2004 Feb 04
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier CONTENTS 15 TEST AND APPLICATION INFORMATION 15.1 SE application 1 FEATURES 15.2 Package ground connection 2 APPLICATIONS 15.3 Output power 15.4 Reference design 3 GENERAL DESCRIPTION 15.4.1 Printed-circuit board 4 QUICK REFERENCE DATA 15.4.2 Bill of materials 5 ORDERING INFORMATION 15.5 Curves measured in reference design 6 BLOCK DIAGRAM 16 PACKAGE OUTLINE 7 PINNING 17 SOLDERING 8 FUNC
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 1 FEATURES 3 GENERAL DESCRIPTION • High efficiency (> 90 %) The TDA8928J is a switching power stage for a high efficiency class-D audio power amplifier system. • Supply voltage from ±7.5 V to ±30 V With this power stage a compact 2 × 10 W self oscillating • Very low quiescent current digital amplifier system can be built, operating with high • High output power efficiency and very low d
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 6 BLOCK DIAGRAM V V handbook, full pagewidth DD2 DD1 13 5 TDA8928J 6 BOOT1 4 DRIVER EN1 HIGH CONTROL 1 7 OUT1 SW1 AND HANDSHAKE 2 DRIVER REL1 LOW 9 STAB temp V SS1 TEMPERATURE SENSOR 3 DIAG AND current V DD2 CURRENT PROTECTION 15 12 POWERUP BOOT2 14 DRIVER EN2 HIGH CONTROL 17 11 SW2 AND OUT2 HANDSHAKE 16 DRIVER REL2 LOW 810 MGX377 V V SS1 SS2 Fig.1 Block diagram. 2004 May 05 4
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 7 PINNING SYMBOL PIN DESCRIPTION SW1 1 digital switch input; channel 1 REL1 2 digital control output; channel 1 handbook, halfpage SW1 1 DIAG 3 digital open-drain output for REL1 2 overtemperature and overcurrent report DIAG 3 EN1 4 digital enable input; channel 1 EN1 4 V 5 positive power supply; channel 1 DD1 V 5 DD1 BOOT1 6 bootstrap capacitor; channel 1 BOOT1 6 OUT1 7 PWM output; cha
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 8 FUNCTIONAL DESCRIPTION 8.2 Protection The TDA8928J is a two-channel audio power amplifier Temperature and short-circuit protection sensors are system using class-D technology. included in the TDA8928J. The diagnostic output is pulled down to V in the event that the maximum current or SS The power stage TDA8928J is used for driving the maximum temperature is exceeded. The system shuts
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 9 LIMITING VALUES In accordance with the Absolute Maximum Rate System (IEC 60134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT V supply voltage -± 30 V P V supply voltage for -± 30 V P(sc) short-circuits across the load I repetitive peak current in - 2A ORM output pins T storage temperature - 55 +150 °C stg T ambient temperature - 40 +85 °C amb T virtual junction temperature - 150 °C vj
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 12 DC CHARACTERISTICS V = ±12.5 V; T =25 °C; measured in test diagram of Fig.4; unless otherwise specified. P amb SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply V supply voltage ±7.5 ±12.5 ±30 V P I total quiescent current no load connected - 25 45 mA q(tot) outputs floating - 510 mA Internal stabilizer logic supply (pin STAB) V stabilizer output voltage referenced to V 11.7 13 14
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 13 AC CHARACTERISTICS V = ±12.5 V; T =25 °C; unless otherwise specified. P amb SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Single-ended application; note 1 P output power R =8 Ω o L (2) THD = 0.5 % 7 8 - W (2) THD = 10 % 9 10 - W R =16 Ω L THD = 0.5 % - 4 - W THD = 10 % - 5 - W THD total harmonic distortion P = 1 W; note 3 o f = 1 kHz - 0.05 0.1 % i f = 10 kHz - 0.2 - % i η efficiency
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 14 SWITCHING CHARACTERISTICS V = ±12.5 V; T =25 °C; measured in Fig.4; unless otherwise specified. P amb SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT PWM outputs (pins OUT1 and OUT2); see Fig.3 t rise time - 30 - ns r t fall time - 30 - ns f t blanking time - 70 - ns blank t propagation delay from pin SW1 (SW2) to - 200 - ns PD pin OUT1 (OUT2) t minimum pulse width - 220 270 ns W(min)
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 15 TEST AND APPLICATION INFORMATION dbook, full pagewidth 2004 May 05 11 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _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 lan
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 15.1 SE application For a SE application the application diagram as shown in Fig.5 can be used. 15.2 Package ground connection The heatsink of the TDA8928J is connected internally to V . SS 15.3 Output power The output power in SE self oscillating class-D applications can be estimated using the formula 2 R L × V ----------------------------------------------- - P () R++ R R L ds(on) s P
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier - 2004 May 05 13 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _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 throu
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 15.4.1 PRINTED-CIRCUIT BOARD The printed-circuit board dimensions are 8.636 × 5.842 cm; single-sided copper of 35 μm; silk screen on both sides; 79 holes; 94 components (32 resistors and 41 capacitors). handbook, full pagewidth R24 pin 1 C10 R26 R30 C28 R1 R11 C24 R32 C8 C45 C34 R35 C26 C26 R19 R19 C36 C26 R21 R21 R33 C11 C31 C31 R34 C9 R22 R12 C25 R2 C16 C30 R31 R15 R15 C37 C37 R13 U2
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V SS GND V DD Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier TDA8928ST L3 U1 C5 J2 J1 state of D art C27 V typ +/- 12.5 V C7 P 2 x 10 W in 8 Ω C6 single layer L4 demo PCB v2r4 RL 1 2003 DZ1 C14 C15 C4 L1 C3 L2 J3 C32 C33 S1 DZ2 CO2 CO1 Con3 Con2 Con1 Out1 Out2 power_on In1 In2 Top silk mgx381 Fig.8 Printed-circuit board (top silk) layout for TDA8928ST. 15.4.2 BILL OF MATERIALS COMPONENT DESCRIPTION TYPE COMMENTS U1 TDA8928ST Philip
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier COMPONENT DESCRIPTION TYPE COMMENTS C19, C20, C21, 2.2 nF, 50 V SMD0805 C22, C39, C42 C12, C13 15 nF, 50 V SMD0805 C40, C41 47 nF, 50 V SMD1206 C1, C2, C16, C17, 100 nF, 50 V SMD0805 C26, C38 C8, C9, C10, C11, 220 nF, 50 V SMD1206 C8 to C11 used as jumper C34, C35 C32, C33 470 nF, 63 V MKT C24, C25 1 μF, 16 V SMD1206 1206 due to supply range C7, C14, C15, 22 μF, 100 V Panasonic NHG Seri
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 15.5 Curves measured in reference design MGX383 MGX384 2 2 10 10 handbook, halfpage handbook, halfpage THD + N THD + N (%) (%) 10 10 (1) 1 1 (1) (2) - 1 - 1 10 10 (2) (3) - 2 - 2 10 10 - 3 - 3 10 10 - 2 - 1 2 2 3 4 5 10 10 10 10 10 10 10 110 10 f (Hz) P (W) i o 2 × 8 Ω SE; V = ±12.5 V. P (1) 6 kHz. 2 × 8 Ω SE; V = ±12.5 V. P (2) 1 kHz. (1) P =10W. o (3) 100 Hz. (2) P =1W. o Fig.9 THD +
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier MGX387 MGX388 100 0 handbook, halfpage handbook, halfpage α S/N cs (dB) (dB) 80 - 20 60 - 40 40 - 60 (1) (2) 20 - 80 0 - 100 - 2 - 1 2 2 3 4 5 10 10 10 110 10 10 10 10 10 f (Hz) P (W) o i 2 × 8 Ω SE; V = ±12.5 V. P (1) P =1W. o (2) P =10W. o 2 × 8 Ω SE; V = ±12.5 V. P Fig.14 Channel separation as function of Fig.13 S/N as function of output power. frequency. MDB624 MGX389 35 24 handboo
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier 16 PACKAGE OUTLINE DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 7.7 mm) SOT243-3 non-concave D h x D E h view B: mounting base side A 2 d B j E A L 3 L c v M Q 117 e e w M m Z 1 2 b p e 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) (1) (1) (1) UNIT A A b cDde D E e e E j LL m Q v w x Z 2 p h 1 2 h 3 17.0 4.6 0.75 0.48 24.0 20.0 12.2 3.4 8.4 2.4 2.1 2.0
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Philips Semiconductors Preliminary specification Power stage 2 x 10 or 1 x 20 W class-D TDA8928J audio amplifier RDBS17P: plastic rectangular-DIL-bent-SIL power package; 17 leads (row spacing 2.54 mm) SOT577-2 non-concave D h x D E h view B: mounting base side d A 2 B j E A L Q c e 2 117 e w M Z 1 L 1 b p e 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) (1) (1) (1) UNIT A A bcE Dde D e e E jLL Q v w x Z 2 p h 1 2 h 1 4.6 0.75 0.48 24.0 20.0 12.2 3.4 3.75 3.75 2.1 2.00 mm 10 2.54 1.27
