TDA7851F

TDA7851F 4 x 48 W MOSFET quad bridge power amplifier Datasheet - production data  Automute at min. supply voltage detection  Low external component count: – Internally fixed gain (26 dB) – No external compensation – No bootstrap capacitors  Output DC offset detector '!0'03 '!0'03 Flexiwatt25 (Horizontal) Flexiwatt25 (Vertical) Features  Multipower BCD technology  High output power capability: – 4 x 48 W/4 Ω max. – 4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10% – 4 x 72 W/2 Ω max.  MOSFET output power stage  Excellent 2 Ω driving capability  Hi-Fi class distortion  Low output noise  Standby function  Protections: – Output short circuit to GND, to Vs, across the load – Very inductive loads – Overrating chip temperature with soft thermal limiter – Load dump voltage – Fortuitous open GND – Reversed battery – ESD Description The TDA7851F is a breakthrough MOSFET technology class AB audio power amplifier, designed for high-power car radio. The fully complementary P-Channel/N-Channel output structure allows a rail-to-rail output voltage swing. This, combined with high output current and minimized saturation losses, sets new power references in the car-radio field, with unparalleled distortion performance.  Mute function Table 1. Device summary Order code Package Packing TDA7851F Flexiwatt25 (vertical) Tube TDA7851FH-QIX Flexiwatt25 (horizontal) Tube February 2016 This is information on a product in full production. DocID17714 Rev 4 1/18 www.st.com Contents TDA7851F Contents 1 2 3 4 5 6 2/18 Block diagram and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.1 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.4 Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1 Flexiwatt 25 (vertical) package information . . . . . . . . . . . . . . . . . . . . . . . 13 5.2 Flexiwatt 25 (horizontal) package information . . . . . . . . . . . . . . . . . . . . . 15 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 DocID17714 Rev 4 TDA7851F List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Flexiwatt 25 (vertical) package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Flexiwatt 25 (horizontal) package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 DocID17714 Rev 4 3/18 3 List of figures TDA7851F List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. 4/18 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output power vs. supply voltage (RL = 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Output power vs. supply voltage (RL = 2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. output power (RL = 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. output power (RL = 2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. frequency (RL = 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Distortion vs. frequency (RL = 2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Crosstalk vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Output attenuation vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Power dissipation and efficiency vs. output power (RL = 4 Ω, SINE) . . . . . . . . . . . . . . . . . 10 Power dissipation and efficiency vs. output power (RL = 2 Ω, SINE) . . . . . . . . . . . . . . . . . 10 Power dissipation vs. output power (RL = 4 Ω, audio program simulation). . . . . . . . . . . . . 11 Power dissipation vs. output power (RL = 2 Ω, audio program simulation). . . . . . . . . . . . . 11 ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . 11 Flexiwatt 25 (vertical) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Flexiwatt 25 (horizontal) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 DocID17714 Rev 4 TDA7851F Block diagram and application circuit 1 Block diagram and application circuit 1.1 Block diagram Figure 1. Block diagram 6CC 6CC 34 "9 /$ -54% /54 ). /54 07 '.$ /54 /54 ). 07 '.$ /54 ). /54 07 '.$ /54 ). /54 07 '.$ !# '.$ 362 4!" 3 '.$ '!0'03 1.2 Application circuit Figure 2. Application circuit # P& # P& 6CC  6CC   2 34 "9    + 2 # P&   -54% + # P&  # ).     #P& /54  ).   #P&   ). #P& /54  P& ). /54  3 '.$    # P& /54   # P&  362  /$ 4!" !# 2 6 + /$/54 '!0'03 DocID17714 Rev 4 5/18 17 Pin description TDA7851F 2 Pin description 2.1 Pin connection Figure 3. Pin connection (top view) /$ 0 '.$ -54% /54 6## /54 /54 0 '.$ /54 ). !# '.$ ). 3 '.$ ). ). 362 /54 0 '.$ 6## /54 34 "9 /54 /54 4!" 2.2  0 '.$  '!0'03 Thermal data Table 2. Thermal data Symbol Rth j-case 6/18 Parameter Thermal resistance junction-to-case DocID17714 Rev 4 max Value Unit 1 °C/W TDA7851F Electrical specifications 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Value Unit Operating supply voltage 18 V VS (DC) DC supply voltage 28 V VS (pk) Peak supply voltage (for t = 50 ms) 50 V Output peak current Non repetitive (t = 100 μs) Repetitive (duty cycle 10% at f = 10 Hz) 10 9 A A Power dissipation Tcase = 70 °C 85 W Tj Junction temperature 150 °C Tstg Storage temperature -55 to 150 °C VS IO Ptot 3.2 Electrical characteristics Refer to the test and application diagram, VS = 14.4 V; RL = 4 Ω; Rg = 600 Ω; f = 1 kHz; Tamb = 25 °C; unless otherwise specified. Table 4. Electrical characteristics Symbol Parameter Test condition Min. Typ. Max. Unit 8 - 18 V VS Supply voltage range - Iq1 Quiescent current RL =  100 150 300 mA VOS Output offset voltage Play mode / Mute mode -60 - +60 mV -10 - +10 mV dVOS During mute ON/OFF output offset voltage ITU R-ARM weighted see Figure 18 During standby ON/OFF output offset voltage -10 - +10 mV 25 26 27 dB ±1 dB 28 22 - W W 48 38 - W W - W Gv Voltage gain - dGv Channel gain unbalance - Po Po max. Output power Max. output power(1) VS = 14.4 V; THD = 10% VS = 14.4 V; THD = 1% VS = 14.4 V; THD = 10%, 2 Ω VS = 14.4 V; THD = 1%, 2 Ω VS = 14.4 V; RL = 4 Ω VS = 14.4 V; RL = 2 Ω Vs = 15.2V; RL = 4 Ω (square wave input (2 Vrms)) DocID17714 Rev 4 25 - - 45 75 48 7/18 17 Electrical specifications TDA7851F Table 4. Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max. Unit THD Distortion Po = 4 W - 0.01 0.05 % eNo Output noise "A" Weighted Bw = 20 Hz to 20 kHz - 35 50 100 μV μV SVR Supply voltage rejection f = 100 Hz; Vr = 1 Vrms 50 70 - dB fch High cut-off frequency PO = 0.5W 100 300 - kHz Ri Input Impedance - 70 100 130 kΩ CT Cross talk f = 1 kHz PO = 4 W f = 10 kHz PO = 4 W 60 70 60 - dB dB ISB Standby current consumption VSt-By = 1.2 V - - 20 μA VSt-By = 0 - - 10 μA Ipin5 Standby pin current VSt-By = 1.2 V to 2.6 V - - ±1 μA VSB out Standby out threshold voltage (Amp: ON) 2.6 - VSB in Standby in threshold voltage (Amp: OFF) - - Mute attenuation POref = 4 W 80 90 dB VM out Mute out threshold voltage (Amp: Play) 2.6 - V VM in Mute in threshold voltage (Amp: Mute) - - 6.7 7 AM (Amp: Mute) Att.  80 dB; POref = 4 W VAM in 1.2 1.2 V V V VS automute threshold (Amp: Play) Att. < 0.1 dB; PO = 0.5 W Ipin23 V Muting pin current 7.5 8 V VMUTE = 1.2 V (Sourced current) 7 12 18 μA VMUTE = 2.6 V -5 - 18 μA VST-BY = 5 V ±1 ±2 ±3 V Vo > ±3 V, Ioff Det = 1 mA 0 V < Voff Det < 18 V - 0.2 0.4 V Vo < ±1 V - 0 15 μA Offset detector VOFF Detected diff. output offset VOFF_SAT Off detector sat voltage VOFF_LK Off detector leakage current 1. Saturated square wave output 8/18 DocID17714 Rev 4 TDA7851F Electrical specifications 3.3 Electrical characteristics curves Figure 4. Quiescent current vs. supply voltage Figure 5. Output power vs. supply voltage (RL = 4 Ω) )DM!   0O7                 6I 2,f           0O MAX 2,: F+(Z 4($ 4($       6S6 '!0'03 Figure 6. Output power vs. supply voltage (RL = 2 Ω)    6S6    '!0'03 Figure 7. Distortion vs. output power (RL = 4 Ω) 0O7 4($     0O MAX 2,: F+(Z  6S6 2,:    F+(Z 4($      F+(Z 4($                      0O7 6S6 '!0'03 Figure 8. Distortion vs. output power (RL = 2 Ω) 4($ '!0'03 Figure 9. Distortion vs. frequency (RL = 4 Ω)   6S6 2,: 4($   6S6 2,: 0O7 F+(Z   F+(Z              F(Z 0O7 '!0'03 DocID17714 Rev 4 '!0'03 9/18 17 Electrical specifications TDA7851F Figure 10. Distortion vs. frequency (RL = 2 Ω) 4($  #2/334!,+D"   6S6 2,: 0O7  Figure 11. Crosstalk vs. frequency 2,: 0O7 2G:                   F(Z   F(Z '!0'03 '!0'03 Figure 12. Supply voltage rejection vs. frequency  Figure 13. Output attenuation vs. supply voltage /54054!44.D" 362D"  2G: 6RIPPLE6RMS  2,: 0O7REF                        6S6 F(Z '!0'03 '!0'03 Figure 14. Power dissipation and efficiency vs. Figure 15. Power dissipation and efficiency vs. output power (RL = 4 Ω, SINE) output power (RL = 2 Ω, SINE) 0TOT7 K    K  0TOT7                    6S6 2,X: F+(Z3).%  0TOT  6S6 2,X: F+(Z3).% K   0TOT                        0O7 10/18         '!0'03 DocID17714 Rev 4     0O7       '!0'03 TDA7851F Electrical specifications Figure 16. Power dissipation vs. output power (RL = 4 Ω, audio program simulation) 0TOT7  0TOT7   6S6 2,X: '!533)!../)3%  Figure 17. Power dissipation vs. output power (RL = 2 Ω, audio program simulation) 6S6 2,X: '!533)!../)3%   #,)034!24   #,)034!24                        0O7 0O7 '!0'03 '!0'03 Figure 18. ITU R-ARM frequency response, weighting filter for transient pop /UTPUTATTENUATIOND"             (Z '!0'03 DocID17714 Rev 4 11/18 17 Application hints 4 Application hints 4.1 SVR TDA7851F Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF time sequence and, consequently, plays an essential role in the pop optimization during ON/OFF transients.To conveniently serve both needs, its minimum recommended value is 10μF. 4.2 Input stage The TDA7851's inputs are ground-compatible and can stand very high input signals (± 8 Vpk) without any performance degradation. If the standard value for the input capacitors (0.1 μF) is adopted, the low frequency cut-off amounts to 16 Hz. The input capacitors should be 1/4 of the capacitor connected to AC-GND pin for optimum pop performance. 4.3 Standby and muting Standby and muting facilities are both CMOS-compatible. In absence of true CMOS ports or microprocessors, a direct connection to Vs of these two pins is admissible but a 470 k equivalent resistance should be present between the power supply and muting and standby pins. R-C cells have always to be used in order to smooth down the transitions for preventing any audible transient noise. About standby, the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5 V /ms. 4.4 Heatsink definition Under normal usage (4 Ohm speakers) the heatsink's thermal requirements have to be deduced from Figure 16, which reports the simulated power dissipation when real music/speech programmers are played out. Noise with Gaussian-distributed amplitude was employed for this simulation. Based on that, frequent clipping occurrence (worst-case) causes Pdiss = 26 W. Assuming Tamb = 70 °C and TCHIP = 150 °C as boundary conditions, the heatsink's thermal resistance should be approximately 2 °C/W. This would avoid any thermal shutdown occurrence even after long-term and full-volume operation. 12/18 DocID17714 Rev 4 TDA7851F 5 Package information Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Flexiwatt 25 (vertical) package information Figure 19. Flexiwatt 25 (vertical) package outline 9 & % 9 + + 9 $ + 2 + 5 / 5 9 5 / 1 5 / 5.1 / / 9 9 5 / 3LQ ' 5 5 5 ( * * ) 0 0 *$3*36 B)B: Table 5. Flexiwatt 25 (vertical) package mechanical data Dimensions Ref Inches(1) Millimeters Min. Typ. Max. Min. Typ. Max. A 4.45 4.50 4.65 0.1752 0.1772 0.1831 B 1.80 1.90 2.00 0.0709 0.0748 0.0787 C - 1.40 - - 0.0551 - D 0.75 0.90 1.05 0.0295 0.0354 0.0413 E 0.37 0.39 0.42 0.0146 0.0154 0.0165 DocID17714 Rev 4 13/18 17 Package information TDA7851F Table 5. Flexiwatt 25 (vertical) package mechanical data (continued) Dimensions Ref Inches(1) Millimeters Min. Typ. Max. Min. Typ. Max. F(2) - - 0.570 - - 0.0224 G 0.80 1.00 1.20 0.0315 0.0394 0.0472 G1 23.75 24.00 24.25 0.9350 0.9449 0.9547 H(3) 28.90 29.23 29.30 1.1378 1.1508 1.1535 H1 - 17.00 - - 0.6693 - H2 - 12.80 - - 0.5039 - H3 - 0.80 - - 0.0315 - L 22.07 22.47 22.87 0.8689 0.8846 0.9004 L1 18.57 18.97 19.37 0.7311 0.7469 0.7626 15.50 15.70 15.90 0.6102 0.6181 0.6260 L3 7.70 7.85 7.95 0.3031 0.3091 0.3130 L4 - 5.00 - - 0.1969 - L5 3.35 3.50 3.65 0.1319 0.1378 0.1437 M 3.70 4.00 4.30 0.1457 0.1575 0.1693 M1 3.60 4.00 4.40 0.1417 0.1575 0.1732 N - 2.20 - - 0.0866 - O - 2.00 - - 0.0787 - R - 1.70 - - 0.0669 - R1 - 0.50 - - 0.0197 - R2 - 0.30 - - 0.0118 - R3 - 1.25 - - 0.0492 - R4 - 0.50 - - 0.0197 - L2 (3) V 5° 5° V1 3° 3° V2 20° 20° V3 45° 45° 1. Values in inches are converted from mm and rounded to 4 decimal digits. 2. Dam-bar protusion not included. 3. Molding protusion included. 14/18 DocID17714 Rev 4 TDA7851F Flexiwatt 25 (horizontal) package information Figure 20. Flexiwatt 25 (horizontal) package outline 9 % & 9 + 9 ' + + + $ 5 5 / / 9 5 5 / 9 1 / 0 * ) 3 ( 0 5 * 5 / / 9 / 5.2 Package information 0 *$3*36 B'B4, Table 6. Flexiwatt 25 (horizontal) package mechanical data Dimensions Ref Inches(1) Millimeters Min. Typ. Max. Min. Typ. Max. A 4.45 4.50 4.65 0.1752 0.1772 0.1831 B 1.80 1.90 2.00 0.0709 0.0748 0.0787 C - 1.40 - - 0.0551 - D - 2.00 - - 0.0787 - E 0.37 0.39 0.42 0.0146 0.0154 0.0165 - - 0.57 - - 0.0224 G 0.75 1.00 1.25 0.0295 0.0394 0.0492 G1 23.70 24.00 24.30 0.9331 0.9449 0.9567 (3) 28.90 29.23 29.30 1.1378 1.1508 1.1535 H1 - 17.00 - - 0.6693 - H2 - 12.80 - - 0.5039 - H3 - 0.80 - - 0.0315 - L 21.64 22.04 22.44 0.8520 0.8677 0.8835 F (2) H DocID17714 Rev 4 15/18 17 Package information TDA7851F Table 6. Flexiwatt 25 (horizontal) package mechanical data (continued) Dimensions Ref Inches(1) Millimeters Min. Typ. Max. Min. Typ. Max. 10.15 10.5 10.85 0.3996 0.4134 0.4272 15.50 15.70 15.90 0.6102 0.6181 0.6260 L3 7.70 7.85 7.95 0.3031 0.3091 0.3130 L4 - 5 - - 0.1969 - L5 5.15 5.45 5.85 0.2028 0.2146 0.2303 L6 1.80 1.95 2.10 0.0709 0.0768 0.0827 M 2.75 3.00 3.50 0.1083 0.1181 0.1378 M1 - 4.73 - - 0.1862 - M2 - 5.61 - - 0.2209 - N - 2.20 - - 0.0866 - P 3.20 3.50 3.80 0.1260 0.1378 0.1496 R - 1.70 - - 0.0669 - R1 - 0.50 - - 0.0197 - R2 - 0.30 - - 0.0118 - R3 - 1.25 - - 0.0492 - R4 - 0.50 - - 0.0197 - L1 L2 (3) V 5° 5° V1 3° 3° V2 20° 20° V3 45° 45° 1. Values in inches are converted from mm and rounded to 4 decimal digits. 2. Dam-bar protusion not included. 3. Molding protusion included. 16/18 DocID17714 Rev 4 TDA7851F 6 Revision history Revision history Table 7. Document revision history Date Revision 09-Jul-2010 1 Initial release. 13-Jun-2012 2 Updated: Features on page 1; Section 3.2: Electrical characteristics on page 7. 18-Sep-2013 3 Updated disclaimer. 4 Updated Table 1: Device summary on page 1 (added new order code). Updated Section 5: Package information (added Flexiwatt25 horizontal package information). 05-Feb-2016 Changes DocID17714 Rev 4 17/18 17 TDA7851F IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2016 STMicroelectronics – All rights reserved 18/18 DocID17714 Rev 4