TDA2050A(XBLW)

XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER General Description The XBLW TDA2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. Thanks to its high power capability the TDA2050 is able to provide up to 35W true rms power into 4 ohm load @ THD = 10%, VS =18V, f = 1KHz and up to 32W into 8ohm load @ THD = 10%, VS = 22V, f = 1KHz.Moreover, the TDA 2050 delivers typically 50W music power into 4 ohm load over 1 sec at VS= 22.5V, f = 1KHz. The high power and very low harmonic and cross- over distortion (THD = 0.05% typ, @ VS = 22V, PO = 0. 1 to 15W, RL=8ohm, f=100Hz to 15KHz) make the device most suitable for both HiFi and high class TV sets. General Description  High Output Power(40W Music Power Iec 268.3 Rules )High Operating Supply Voltage (50V)  Single Or Split Supply Operations  Very Low Distortion  Short Circuit Protection (Out To Gnd)  Thermal Shutdown Ordering Information Product Model XBLW TDA2050A XBLW TDA2050A Package Type TO-220-5L TO-263-5L Marking TDA2050A TDA2050A Packing Packing Qty Tube Tape 1000/Box 500/Reel PIN CONNECTION (Top view) SCHEMATIC DIAGRAM XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 1 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER TEST AND APPLICATION CIRCUIT ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS Supply Voltage Vi Input Voltage Vi Differential Input Voltage IO Ptot Value Unit V 25 VS 15 V Output Peak Current (internally limited) 5 A 25 W Tstg, Tj Power Dissipation TCASE = 75。C Storage and Junction Temperature -40 to 150 。C TL Lead Temperature (Soldering, 10 seconds) 245 。C THERMAL DATA Symbol Rth jcase XBLWversion1.0 Description Thermal Resistance junction-case Max 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 Value Unit 3 。C/W 第 2 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit, VS = 土18V, Tamb = 25。C, f = 1 kHz; un-less otherwise specified) Symbol VS Id Parameter Test Condition Supply Voltage Range Min. Typ. 土4.5 Unit 土25 V VS = 土4.5V 30 50 mA VS = 土25V 55 90 mA Input Bias Current VS = 土22V 0.1 0.5 µA VOS Input Offset Voltage VS = 土22V 土15 mV IOS Input Offset Current VS = 土22V 土200 nA Ib Quiescent Drain Current Max. d = 0.5% 28 W 18 W 25 W RL = 4Ω 35 W RL = 8Ω 22 W VS = 土22V RL = 8Ω 32 W 50 W 24 RL = 4Ω RL = 8Ω VS = 土22V RL = 8Ω RMS Output Power 22 d = 10% PO Music Power d = 10%; T = 1s IEC268.3 RULES VS = 土22.5V; RL = 4 RL = 4 f = 1kHz, PO = 0. 1 to 24W d Total Harmonic Distortion 0.03 f = 100Hz to 10kHz, PO = 0. 1 to 18W VS =土22V RL = 8 f = 1kHz, PO = 0. 1 to 20W Slew Rate GV GV Open Loop Voltage Gain Closed Loop Voltage Gain BW Power Bandwidth (-3dB) eN Total Input Noise Ri Input Resistance (pin 1) SVR Supply Voltage Rejection η Efficiency 30 % % % 8 V/µs 80 dB 30.5 31 20 to RL = 4ΩVi = 200mV curve A 4 B = 22Hz to 22kHz 5 500 dB Hz 80,000 µV 10 µV kΩ Rs = 22kΩ; f = 100Hz; Vripple = 0.5Vrms 45 dB PO = 28W; RL = 4Ω 65 % 67 % 150 。C PO = 25W; RL = 8Ω; Thermal Shut-down Junction Temperature XBLWversion1.0 0.5 0.5 5 VS = 土22V Tsd-j % 0.02 f = 100Hz to 10kHz, PO = 0. 1 to 15W SR 0.5 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 3 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Figure 1: Split Supply Typical Application Circuit TDA2050 Figure 2: P.C. Board and ComponentsLayout of the Circuit of Fig. 1 (1:1) XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 4 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER SPLIT SUPPLY APPLICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of fig. 2. Different values can be used. The following table can help the designer. Component Recommende Purpose d Larger than Smaller than Recommended Value Recommended Value Value R1 22kΩ R2 680 R3 22k R4 2.2 C1 1µF C2 22µF C3 Input Impedance Feedback Resistor Frequency Stability Increase of Input Decrease of Input Impedance Impedance Decrease of Gain (*) Increase of Gain Increase of Gain Decrease of Gain (*) Danger of Oscillations Input Decoupling DC Higher Lowfrequency cut-off Inverting Input Increase of Switch DC Decoupling ON/OFF Noise Higher Lowfrequency cut-off 100nF Supply Voltage Bypass Danger of Oscillations 220µF Supply Voltage Bypass Danger of Oscillations 0.47µF Frequency Stability Danger of Oscillations C4 C5 C6 C7 (*) The gain must be higher than 24dB PRINTED CIRCUIT BOARD The layout shown in fig. 2 should be adopted by the designers. If different layouts are used, the ground points of input 1 and input 2 must be well decoupled from the ground return of the output in which a high current flows. Figure 3: Single Supply Typical Application Circuit TDA2050 XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 5 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Figure 4: P.C. Board and ComponentsLayout of the Circuit of Fig. 3 (1:1) SINGLE SUPPLY APPLICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of fig. 3. Different values can be used. The following table can help the designer. Component Recommende d Purpose Larger than Smaller than Recommended Value Recommended Value Value R1,R2,R3 22KΩ Biasing Resistor R4 22KΩ Feedback Resistors R5 680 R6 2.2 Frequency Stability C1 2.2µF Input Decoupling DC C2 100µF Supply Voltage Rejection Increase of Gain Decrease of Gain (*) Decrease of Gain (*) Increase of Gain Danger of Oscillations Higher Lowfrequency cut-off Worse Turn-off Transient Worse Turn-on Delay C3 1000µF Supply Voltage Bypass Danger of Oscillations Worse of Turn-off Transient C4 C5 22µF Inverting Input DC Increase of Switching Decoupling ON/OFF Higher Lowfrequency cut-off 100nF Supply Voltage Bypass Danger of Oscillations C6 0.47µF Frequency Stability Danger of Oscillations C7 1000µF Output DC Decoupling Higher Lowfrequency cut-off XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 6 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER (*) The gain must be higher than 24 dB NOTE If the supply voltage is lower than 40V and the load is 8ohm (or more) a lower value of C2 can be used (i.e. 22µF). C7 can be larger than 1000uF only if the supply voltage does not exceed 40V. TYPICAL CHARACTERISTICS (Split Supply Test Circuit unless otherwise specified) Figure 5: Output Power vs. Supply Voltage Figure 6: Distortion vs. Output Power Figure 7: Output Power vs. Supply Voltage Figure 8: Distortion vs. Output Power XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 7 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Figure. 9: Distortion vs. Frequency XBLWversion1.0 Figure 10: Distortion vs. Frequency 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 8 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER SHORT CIRCUIT PROTECTION The TDA2050 has an original circuit which limits the current of the output transistors. The maximum output current is a function of the collector emitter voltage; hence the output transistors work within their safe operating area. This function can therefore be considered as being peak power limiting rather than simple current limiting. It reduces the possibility that the device gets damaged during an accidental short circuit from AC output to ground. THERMAL SHUTDOWN The presence of a thermal limiting circuit offers the following advantages: 1)An overload on the output (even if it is permanent), or an above limit ambient temperature can be easily tolerated since the Tj cannot be higher than 150°C. 2)The heat sink can have a smaller factor of safety compared with that of a conventional circuit. There is no possibility of device damage due to high junction temperature. If for any reason, the junction temperature increases up to 150°C, the thermal shutdown simply reduces the power dissipation and the current consumption. The maximum allowable power dissipation depends upon the thermal resistance junction-ambient. Fig. 17 shows this dissipable power as a function of ambient temperature for different thermal resistance. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 9 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Figure 17: Maximum Allowable Power Dissipation vs. Ambient Temperature MOUNTING INSTRUCTIONS The power dissipated in the circuit must be removed by adding an external heat sink. Thanks to the PENTAWATT package, the heat sink mounting operation is very simple, a screw or a compression spring (clip) being sufficient. Between the heat sink and the package is better to insert a layer of silicon grease, to optimize the thermal contact; no electrical isolation is needed between the two surfaces. Fig. 18 shows an example of heat sink. Dimension suggestion The following table shows the length that the heat sink in fig. 18 must have for several values of Ptot and Rth Figure 18: Example of heat-sink APPENDIX A A.1 - MUSIC POWER CONCEPT MUSIC POWER is (according to the IEC clauses n.268-3 of Jan 83) the maximum power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity) 1 sec after the application of a sinusoidal input signal of frequency 1 KHz. According to this definition our method of measurement comprises the following steps: Set the voltage supply at the maximum operating value; XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 10 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER - Apply a input signal in the form of a 1KHz tone burst of 1 sec duration: the repetition period of the signal pulses is 60 sec; Ptot (W) 12 8 6 Lenght of heat sink (mm) 60 40 30 Rth of heat sink (。C/W) 4.2 6.2 8.3 - The output voltage is measured 1 sec from the start of the pulse; - Increase the input voltage until the output signal shows a THD=1 0 %; - The music power is then V2 out /RL, where Vout is the output voltage measured in the condition of point 4 and RL is the rated load impedance; The target of this method is to avoid excessive dissipation in the amplifier. A.2 - INSTANTANEOUS POWER Another power measurement (MAXIMUM INSTANTANEOUS OUTPUT POWER) was proposed by IEC in 1988 (IEC publication 268-3 subclause 19.A). We give here only a brief extract of the concept, and a circuit useful for the measurement. The supply voltage is set at the maximum operating value. The test signal consists of a sinusoidal signal whose frequency is 20 Hz, to which are added alternate positive and negative pulses of 50 µs duration and 500 Hz repetition rate. The amplitude of the 20 Hz signal is chosen to drive the amplifier to its voltage clipping limits, while the amplitude of the pulses takes the amplifier alternately into its current-overload limits A circuit for generating the test signal is given in fig. 19. The load network consists of a 40 F capacitor, in series with a 1 ohm resistor. The capacitor limits the current due to the 20 Hz signal to a low value, whereas for he short pulses the effective load impedance is of the order of 1 ohm , and a high output current is produced. Using this signal and load network the measurement may be made without causing excessive dissipation in the amplifier. The dissipation in the 1 ohm resistor is much lower than a rated output power of the amplifier, because the duty-cycle of the high output current is low. By feeding the amplifier output voltage to the Xplates of an oscilloscope, and the voltage across the 1 ohm resistor (representing the output current) to the Y=plates, it is possible to read on the display the value of the maximum instantaneous output power. The result of this test applied at the TDA 2050 is: PEAK POWER = 100W typ Figure 19: Test circuit for peak power measurement XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 11 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Physical Dimensions TO-220-5L Dimensions In Millimeters(TO220-5L) A A1 B C C1 D E F L1 L2 L3 L4 a b e Min： 4.45 1.22 10 8.45 6.10 0.32 4.24 8.24 15.45 17.65 3.00 2.64 0.76 1.70 2.67 Max： 4.62 1.32 10.4 8.95 6.60 0.42 4.70 8.70 16.25 18.25 3.85 2.84 1.02 BSC TYP Symbol： XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 12 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER TO-263-5L Unit:mm XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 13 页 共 14 页 XBLW TDA2050 32W Hi-Fi AUDIO POWER AMPLIFIER Statement：  Shenzhen xinbole electronics co., ltd. reserves the right to change the product specifications, without notice! Before placing an order, the customer needs to confirm whether the information obtained is the latest version, and verify the integrity of the relevant information.  Any semiconductor product is liable to fail or malfunction under certain conditions, and the buyer shall be responsible for complying with safety standards in the system design and whole machine manufacturing using Shenzhen xinbole electronics co., ltd products, and take appropriate security measures to avoid the potential risk of failure may result in personal injury or property losses of the situation occurred!  Product performance is never ending, Shenzhen xinbole electronics co., ltd will be dedicated to provide customers with better performance, better quality of integrated circuit products. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 14 页 共 14 页