TDA8920B NXP Semiconductors, TDA8920B Datasheet

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TDA8920B

Manufacturer Part Number
TDA8920B
Description
The TDA8920B is a high efficiency class-D audio power amplifier with very lowdissipation
Manufacturer
NXP Semiconductors
Datasheet

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1. General description
2. Features
3. Applications
The TDA8920B is a high efficiency class-D audio power amplifier with very low
dissipation. The typical output power is 2
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.
TDA8920B
2
Rev. 02 — 07 November 2005
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)
100 W class-D power amplifier
100 W.
Product data sheet

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TDA8920B Summary of contents

Page 1

... Rev. 02 — 07 November 2005 1. General description The TDA8920B is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 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 ...

Page 2

... THD = Ordering information Package Name Description HSOP24 plastic, heatsink small outline package; 24 leads; low stand-off height DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier Min Typ Max 12 ...

Page 3

... MODE 2 (19) SGND2 mute 5 (22) IN2P INPUT 4 (21) STAGE IN2M 1 (18 SSA2 SSA1 Pin numbers in parenthesis refer to the TDA8920BJ. Fig 1. Block diagram TDA8920B_2 Product data sheet STABI PROT 18 (12) 13 (7) RELEASE1 PWM SWITCH1 CONTROL MODULATOR ENABLE1 HANDSHAKE STABI TEMPERATURE SENSOR ...

Page 4

... DDP2 BOOT2 22 OUT2 SSP2 19 n.c. TDA8920BTH STABI SSP1 16 OUT1 BOOT1 DDP1 PROT 13 Fig 2. Pin configuration TDA8920BTH 7.2 Pin description Table 3: Symbol Pin V SSA2 SGND2 V DDA2 IN2M IN2P MODE OSC IN1P IN1M V DDA1 TDA8920B_2 Product data sheet 1 V SSA2 2 SGND2 3 ...

Page 5

... 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 4. If the capacitor C is left out of the application the voltage on the Figure 5 V standby/ mute R R mute/on Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier 5. MODE pin C SGND 001aab172 © Koninklijke Philips Electronics N.V. 2005. All rights reserved ...

Page 7

... The audio signal is available after a second delay of 50 ms. For pop noise-free start- recommended that the time constant applied to the MODE pin is at least 500 ms for the transition between standby and operating. Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier audio output ...

Page 8

... 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

... TDA8920B_2 Product data sheet Section 13.6 for more information on this maximum output current limiting Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi the start-up procedure © ...

Page 10

... OCP (short to one of the supply lines). TDA8920B_2 Product data sheet ) supply voltages and is triggered if the voltage difference SSA 0. DDA SSA an overview is given of all protections and the effect on the output signal. Overview of TDA8920B protections Complete shut-down Y [ Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi ...

Page 11

... Conditions supply voltage operating non operating repetitive peak current in maximum output output pin current limiting storage temperature ambient temperature junction temperature Section 13.6. Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier Figure 6. OUT1 SGND OUT2 power stage mbl466 Min Max - 30 ...

Page 12

... V stabilizer output voltage o(stab) TDA8920B_2 Product data sheet Thermal characteristics Parameter thermal resistance from junction to ambient TDA8920BTH TDA8920BJ thermal resistance from junction to case TDA8920BTH TDA8920BJ Section 13.5. Conditions no load, no filter; no RC-snubber network connected mute and operating; with respect to V Rev. 02 — 07 November 2005 ...

Page 13

... Product data sheet …continued Conditions slope is directly related to the time-constant of the RC-network on the MODE pin V ( oo(on) STBY V oo(mute) 0 0.8 Conditions R = 30.0 k OSC Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier Min Typ - 150 - 20 Figure 7. MUTE ON 2.2 3.0 4.2 V (V) MODE Min Typ ...

Page 14

... Hz i standby 100 Hz i operating mute (RMS) i(CM) measurement. See also DSon = Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi unless otherwise specified. Min Typ [ 110 [ [ [ ...

Page 15

... Hz i standby 100 Hz i operating mute (RMS) i(CM) measurement. See also DSon = Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi unless otherwise specified. Min Typ [2] - 174 - 210 [2] - 138 - 173 [3] - 0. [4] ...

Page 16

... P min osc = --------------------------------------------------------- output power just at clipping = output power at THD = 1. o(1%) Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier Figure 4, 5 and 7). 2 osc 2 f osc © Koninklijke Philips Electronics N.V. 2005. All rights reserved. (1) (2) (3) ( ...

Page 17

... – determined by the efficiency ( ) of the TDA8920B. The efficiency measured in the diss TDA8920B as a function of output power is given in be derived as a function of output power (see The derating curves (given for several values of R ...

Page 18

... 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 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 Depending on the impedance of the short circuit the amplifi ...

Page 19

... 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

... TDA8920BTH • The internal heat spreader of the TDA8920BTH is internally connected to V • The external heatsink must be connected to the ground plane • Use a thermal conductive electrically non-conductive Sil-Pad between the backside of the TDA8920BTH and a small external heatsink • ...

Page 21

... C26 IN2P 5 5.6 k 470 nF C28 220 pF IN2 R12 C29 IN2M 4 5.6 k 470 nF C30 C34 FB GND 100 nF 100 DDA SSA Fig 9. TDA8920BTH application schematic V DDP R2 V DDA R1 V DDP 5 5.6 k DZ1 R4 5V6 5 100 F/10 V ON/OFF OPERATE/MUTE V SSP ...

Page 22

... P ( kHz. ( kHz. ( 100 Hz. Fig 13. (THD + N)/ function of output power; BTL load Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi N)/ confi ...

Page 23

... N)/S (%) (Hz) (1) P (2) P Fig 17. (THD + N)/ function of frequency; BTL load Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier (1) ( configuration out = 10 W. out configuration with 2 ...

Page 24

... P (W) o (1) 2 (2) 2 (3) 1 (4) 1 Fig 21. Efficiency as a function of total output power Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi (1) 80 (2) 100 configuration. ...

Page 25

... (1) 1 (2) 1 ( 5.6 k and Fig 25. Gain as a function of frequency Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier 240 ( (2) 160 (3) ( kHz. 6 BTL configuration. ...

Page 26

... Fig 27. Output voltage as a function of mode voltage 120 S/N (dB) ( BTL configuration. 8 BTL configuration. Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi mode V = 100 mV kHz. i 001aab243 2 3 ...

Page 27

... scale (2) ( 0.32 16.0 13.0 1.1 11.1 6.2 2.9 0.23 15.8 12.6 0.9 10.9 5.8 2.5 REFERENCES JEDEC JEITA Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi detail 14.5 1.1 1.7 1 0.25 0.25 0.03 13.9 0.8 1.5 EUROPEAN PROJECTION © Koninklijke Philips Electronics N.V. 2005. All rights reserved. ...

Page 28

... 28.0 12.2 10. 2.54 1.27 5.08 27.5 11.8 9.85 REFERENCES JEDEC JEITA Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier non-concave view B: mounting base side ...

Page 29

... C (SnPb process) or below 245 C (Pb-free process) – for all BGA, HTSSON..T and SSOP..T packages TDA8920B_2 Product data sheet Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifi the stg(max) © Koninklijke Philips Electronics N.V. 2005. All rights reserved. ...

Page 30

... 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 Product data sheet 2 called small/thin packages. Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier 3 350 mm so called © Koninklijke Philips Electronics N.V. 2005. All rights reserved ...

Page 31

... LBGA, not suitable [5] , not suitable , SO, SOJ suitable not recommended not recommended [10] [10] , WQCCN..L not suitable Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier [2] Reflow [3] not suitable suitable [6] suitable suitable [7] [8] suitable [9] suitable not suitable © Koninklijke Philips Electronics N.V. 2005. All rights reserved. ...

Page 32

... Product data sheet - the maximum value for the supply voltage is given for both Table Preliminary data sheet - Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier Doc. number Supersedes - TDA8920B_1 5) 9397 750 13356 - © Koninklijke Philips Electronics N.V. 2005. All rights reserved ...

Page 33

... Trademarks Notice — All referenced brands, product names, service names and trademarks are the property of their respective owners. Rev. 02 — 07 November 2005 TDA8920B 2 100 W class-D power amplifier © Koninklijke Philips Electronics N.V. 2005. All rights reserved ...

Page 34

... No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Published in The Netherlands TDA8920B Date of release: 07 November 2005 Document number: TDA8920B_2 ...

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