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Manual
1. General description
2. Features
3. Applications
TDA8920B
2 × 100 W class-D power amplifier
Rev. 02 — 07 November 2005
The TDA8920B is a high efficiency class-D audio power amplifier with very low
dissipation. The typical output power is 2 × 100 W.
The device is available in the HSOP24 power package and in the DBS23P through-hole
power package. The amplifier operates over a wide supply voltage range from
±12.5 V to ±30 V (±32 V non operating) and consumes a very low quiescent current.
Zero dead time switching
Advanced current protection: output current limiting
Smooth start-up: no pop noise due to DC offset
High efficiency
Operating supply voltage from ±12.5 V to ±30 V
Low quiescent current
Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied
Load (BTL)
Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL)
High output power
High supply voltage ripple rejection
Internal switching frequency can be overruled by an external clock
Full short-circuit proof across load and to supply lines
Thermally protected
Television sets
Home-sound sets
Multimedia systems
All mains fed audio systems
Car audio (boosters)
Product data sheet
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Table of Contents
Related Manuals for Philips TDA8920B
Summary of Contents for Philips TDA8920B
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Page 1: General Description
Product data sheet 1. General description The TDA8920B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 100 W. The device is available in the HSOP24 power package and in the DBS23P through-hole power package. -
Page 2: Quick Reference Data
24 leads; low SOT566-3 stand-off height TDA8920BJ DBS23P plastic DIL-bent-SIL power package; 23 leads (straight SOT411-1 lead length 3.2 mm) TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 2 of 34... -
Page 3: Block Diagram
SSA2 SSA1 n.c. SSP1 SSP2 Pin numbers in parenthesis refer to the TDA8920BJ. Fig 1. Block diagram TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 3 of 34... -
Page 4: Pinning Information
1 IN1M negative audio input for channel 1 positive analog supply voltage for channel 1 DDA1 TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 4 of 34... -
Page 5: Functional Description
For protection a temperature sensor and a maximum current detector are built-in. The two audio channels of the TDA8920B contain two PWM modulators, two analog feedback loops and two differential input stages. It also contains circuits common to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager. - Page 6 Figure + 5 V standby/ mute MODE pin mute/on SGND 001aab172 Fig 4. Example of mode selection circuit TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 6 of 34...
- Page 7 MODE pin is at least 500 ms for the transition between standby and operating. Fig 5. Timing on mode selection input TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005...
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Page 8: Pulse Width Modulation Frequency
(the amplifier is NOT shut-down completely). The amplifier can distinguish between an impedance drop of the loudspeaker and a low-ohmic short across the load. In the TDA8920B this impedance threshold (Z depends on the supply voltage used. When a short is made across the load causing the impedance to drop below the threshold level (<... -
Page 9: Window Protection (Wp)
(after 100 ms) the window protection will be activated. As a result the amplifier will not start-up until the short to the supply line is removed. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005... -
Page 10: Supply Voltage Protections
Fault condition detected during (every) transition between standby-to-mute and during restart after activation of OCP (short to one of the supply lines). TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005... -
Page 11: Differential Audio Inputs
°C ambient temperature °C junction temperature Overvoltage protection might be activated. Current limiting concept. See also Section 13.6. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 11 of 34... -
Page 12: Thermal Characteristics
OO(BTL)(on) Stabilizer output; pin STABI stabilizer output voltage mute and operating; 12.5 o(stab) with respect to V SSP1 TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 12 of 34... -
Page 13: Dynamic Characteristics
SGND + 6 trip level for tracking on pin OSC SGND + 2.5 OSC(trip) frequency range for tracking track TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 13 of 34... -
Page 14: Stereo And Dual Se Application
= 0 Ω; f = 1 W; R = 1 kHz. = 1 V (RMS); f = 1 kHz. i(max) TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 14 of 34... -
Page 15: Mono Btl Application
Figure 6). In principle the loudspeaker can be connected between the outputs of the two single-ended demodulation filters. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 15 of 34... -
Page 16: Mode Pin
When using an external clock the following accuracy of the duty cycle of the external clock has to be taken into account: 47.5 % < δ < 52.5 %. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005... -
Page 17: Heatsink Requirements
----------------------------------- - th j a – diss is determined by the efficiency (η) of the TDA8920B. The efficiency measured in the diss TDA8920B as a function of output power is given in Figure 21. The power dissipation can... -
Page 18: Output Current Limiting
8 A (e.g. in case of a short-circuit to the supply lines or a short-circuit across the load) the maximum output current of the amplifier will be regulated to 8 A. The TDA8920B amplifier can distinguish between a low-ohmic short circuit condition and other overcurrent conditions like dynamic impedance drops of the loudspeakers used. The impedance threshold (Z ) depends on the supply voltage used. -
Page 19: Pumping Effects
If the overcurrent condition is removed the amplifier will remain in Operating mode once restarted. In this way the TDA8920B amplifier is fully robust against short circuit conditions while at the same time so-called audio holes as a result of loudspeaker impedance drops are eliminated. -
Page 20: Application Schematic
Minimum total required capacitance per power supply line is 3300 µF • TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 20 of 34... - Page 21 xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx 10 Ω L1 BEAD 5.6 kΩ CON1 +25 V 5.6 kΩ 47 µF/35 V 470 µF/35 V 100 nF 5.6 kΩ...
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Page 22: Curves Measured In Reference Design
Fig 13. (THD + N)/S as a function of output power; BTL configuration with 1 × 6 Ω load configuration with 1 × 8 Ω load TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 22 of 34... - Page 23 Fig 17. (THD + N)/S as a function of frequency; BTL configuration with 1 × 6 Ω load configuration with 1 × 8 Ω load TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 23 of 34...
- Page 24 Fig 20. Power dissipation as a function of total output Fig 21. Efficiency as a function of total output power power TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 24 of 34...
- Page 25 = 5.6 kΩ and Fig 25. Gain as a function of frequency; R = 330 pF = 330 pF TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 25 of 34...
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Page 26: Test Information
Fig 28. S/N ratio as a function of output power 14. Test information 14.1 Quality information The General Quality Specification for Integrated Circuits, SNW-FQ-611 is applicable. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 26 of 34... -
Page 27: Package Outline
REFERENCES OUTLINE EUROPEAN ISSUE DATE VERSION PROJECTION JEDEC JEITA 03-02-18 SOT566-3 03-07-23 Fig 29. Package outline SOT566-3 (HSOP24) TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 27 of 34... - Page 28 REFERENCES OUTLINE EUROPEAN ISSUE DATE VERSION PROJECTION JEDEC JEITA 98-02-20 SOT411-1 02-04-24 Fig 30. Package outline SOT411-1 (DBS23P) TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 28 of 34...
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Page 29: Soldering
225 °C (SnPb process) or below 245 °C (Pb-free process) • – for all BGA, HTSSON..T and SSOP..T packages TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 29 of 34... -
Page 30: Wave Soldering
When using a dedicated tool, all other leads can be soldered in one operation within 2 seconds to 5 seconds between 270 °C and 320 °C. TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005... -
Page 31: Package Related Soldering Information
For more detailed information on the BGA packages refer to the (LF)BGA Application Note (AN01026); order a copy from your Philips Semiconductors sales office. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). -
Page 32: Revision History
(see Table TDA8920B_1 20041001 Preliminary data sheet 9397 750 13356 TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 02 — 07 November 2005 32 of 34... -
Page 33: Data Sheet Status
This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. -
Page 34: Table Of Contents
Reflow soldering ..... . . 29 © Koninklijke Philips Electronics N.V. 2005 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
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