TB29H TOSHIBA Bi-CMOS Digital Integrated Circuit Silicon Monolithic TB29H Maximum Power 47 W BTL 4-ch Audio Power IC The TB29H is 4-ch BTL audio amplifier for car audio applications. This IC can generate higher power: POUT MAX = 47 W as it includes the pure complementary P-ch and N-ch DMOS output stage. It is designed to yield low distortion ratio for 4-ch BTL audio power amplifier, built-in standby function, muting function, and various kinds of protectors. Additionally, high-side switch is built in. Features Weight: 7.7 g (typ.) High power output : POUT MAX () = 47 W (typ.) (VCC = 4.4 V, f = khz, JEITA max, RL = 4 Ω) : POUT MAX (2) = 4 W (typ.) (VCC =.7 V, f = khz, JEITA max, RL = 4 Ω) : POUT MAX () = 8 W (typ.) (VCC = 4.4 V, f = khz, JEITA max, RL = 2 Ω) : POUT () = 29 W (typ.) (VCC = 4.4 V, f = khz, THD = %, RL = 4 Ω) : POUT (2) = 2 W (typ.) (VCC =.2 V, f = khz, THD = %, RL = 4 Ω) : POUT () = W (typ.) (VCC = 4.4 V, f = khz, THD = %, RL = 2 Ω) Low distortion ratio: THD =.% (typ.) (VCC =.2 V, f = khz, POUT = W, RL = 4 Ω) Low noise: VNO = 9 µvrms (typ.) (VCC =.2 V, Rg = Ω, BW = 2 Hz~2 khz, RL = 4 Ω) Built-in standby switch function (pin 4) Built-in muting function (pin 22) Built-in high-side switch function (pin 2) Built-in various protection circuits: Thermal shut down, overvoltage, out to GND, out to VCC, out to out short Operating supply voltage: VCC (opr) = 9~8 V (RL = 4 Ω) Note : Since this device s pins have a low withstanding voltage, please handle it with care. 22--6
TB29H Block Diagram 2 6 TAB V CC V CC2 C C OUT ( ) 9 C IN PW-GND 8 R L OUT ( ) 7 OUT2 ( ) C 2 IN2 PW-GND2 2 R L OUT2 ( ) C 6 6 AC-GND OUT ( ) 7 C IN PW-GND 8 R L OUT ( ) 9 OUT4 ( ) 2 C 4 IN4 PW-GND4 24 R L OUT4 ( ) 2 PRE-GND RIP STBY H-SW MUTE 4 2 22 V PLAY C2 C4 R MUTE : PRE-GND : PW-GND 2 22--6
TB29H Caution and Application Method (Description is made only on the single channel.). Voltage Gain Adjustment This IC has no NF (negative feedback) Pins. Therefore, the voltage gain can not be adjusted, but it makes the device a space and total costs saver. Input Amp. Amp. 2A Amp. 2B Figure Block Diagram The voltage gain of amp. : GV db The voltage gain of amp.2a, B : GV2 2dB The voltage gain of BTL connection : GV (BTL) 6dB Therefore, the total voltage gain is decided by expression below. GV GV GV2 GV (BTL) 2 6 26dB 2. Standby SW Function (pin 4) By means of controlling pin 4 (standby pin) to High and Low, the power supply can be set to ON and OFF. The threshold voltage of pin 4 is set at about VBE (typ.), and the power supply current is about 2 A (typ.) in the standby state. ON OFF Power 4 k9 V CC 2 V BE Control Voltage of Pin 4: V SB to BIAS CUTTING CIRCUIT Standby Power V SB (V) ON OFF ~. OFF ON.~6 V When changing the time constant of pin 4, check the pop noise. Figure 2 With pin 4 set to High, Power is turned ON Advantage of Standby SW () Since VCC can directly be controlled to ON or OFF by the microcomputer, the switching relay can be omitted. (2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching. 22--6
TB29H Large current capacity switch Battery Relay Battery V CC V CC Conventional Method From microcomputer Small current capacity switch Battery From microcomputer Battery Stand-By V CC Stand-By V CC Standby Switch Method Figure. Muting Function (pin 22) Audio muting function is enabled when pin 22 is Low. When the time constant of the muting function is determined by R and C4, it should take into account the pop noise. The pop noise which is generated when the power or muting function is turned ON/OFF will vary according to the time constant. (Refer to Figure 4 and Figure.) The pin 22 is designed to operate off V. Moreover, this terminal (pin 22) serves as the source switch of current of an internal mute circuit. And it is designed so that the discharge current of this terminal (pin 22) may serve as 2 A. The outside pull-up resistor R is determind on the basic of this value. ex) When control voltage is changed in to 6 V from V. 6 V/ V 47 k 6 k To obtain enough mute attenuation, a series resistor, R at pin 22 should be 47 k9 or more. V R C 4 22 k9 Mute ON/OFF control Mute attenuation ATT (db) 2 2 4 6 8 f khz VOUT 2dBm ATT V MUTE 2.. 2 2. Pin 22 control voltage: VMUTE (V) Figure 4 Muting Function Figure Mute Attenuation V MUTE (V) 4 22--6
4. High-Side Switch TB29H Pin 2 of this device is used in concerned with VCC as a high-side switch which operates with the standby pin. Thus, both the power amp IC and the connected external unit (the hideaway unit) can be turned ON/OFF by using of the standby switch.. Pop Noise Suppression Since the AC-GND pin (pin 6) is used as the NF pin for all amps, the ratio between the input capacitance (C) and the AC-to-GND capacitance (C6) should be :4. Also, if the power is turned OFF before the C and C6 batteries have been completely charged, pop noise will be generated because of the DC input umbalance. To counteract the noise, it is recommended that a longer charging time be used for C2 as well as for C and C6. Note that the time which audio output takes to start will be longer, since the C2 makes the muting time (the time from when the power is turned ON to when audio output starts) is fix. The pop noise which is generated when the muting function is turned ON/OFF will vary according to the time constant of C4. The greater the capacitance, the lower the pop noise. Note that the time from when the mute control signal is applied to C4 to when the muting function is turned ON/OFF will be longer. 6. External Component Constants Component Name Recommended Value Purpose C.22 F To eliminate DC Lower than recommended value Cut-off frequency is increased C2 F To reduce ripple Powering ON/OFF is faster C C4. F F To provide sufficient oscillation margin To reduce pop noise Effect Higher than recommended value Cut-off frequency is reduced Powering ON/OFF takes longer Reduces noise and provides sufficient oscillation margin High pop noise. Duration until muting function is turned ON/OFF is short C 9 F Ripple filter Power supply ripple filtering C6 F NF for all outputs Pop noise is suppressed when C:C6 :4 Low pop noise. Duration until muting function is turned ON/OFF is long Notes Pop noise is generated when V CC is ON Pop noise is generated when V CC is ON Note: If recommended value is not used. 22--6
TB29H Maximum Ratings (Ta 2 C) Characteristics Symbol Rating Unit Peak supply voltage (.2 s) V CC (surge) V DC supply voltage V CC (DC) 2 V Operation supply voltage V CC (opr) 8 V Output current (peak) I O (peak) 9 A Power dissipation P D (Note 2) 2 W Operation temperature T opr 4~8 C Storage temperature T stg ~ C Note 2: Package thermal resistance G j-t C/W (typ.) (Ta 2 C, with infinite heat sink) Electrical Characteristics (unless otherwise specified, V CC.2 V, f khz, R L 4 9, Ta 2 C) Characteristics Symbol Test Circuit Test Condition Min Typ. Max Unit Quiescent current I CCQ V IN 2 4 ma Output power Output power (R L 2 9) P OUT MAX () V CC 4.4 V, max POWER 47 P OUT MAX (2) V CC.7 V, max POWER 4 P OUT () V CC 4.4 V, THD % 29 P OUT (2) THD % 2 2 P OUT MAX () V CC 4.4 V, max POWER 8 P OUT MAX (4) V CC.7 V, max POWER 77 P OUT () V CC 4.4 V, THD % P OUT (4) THD % 42 4 Total harmonic distortion THD P OUT W.. % Voltage gain G V V OUT.77 Vrms 24 26 28 db Voltage gain ratio,g V V OUT.77 Vrms.. db Output noise voltage Ripple rejection ratio R.R. Cross talk C.T. V NO () Rg 9, DIN44 V NO (2) Rg 9, BW 2 Hz~2 khz 9 2 f rip Hz, R g 62 9 V rip.77 Vrms R g 62 9 V OUT.77 Vrms W W Vrms 6 db 7 db Output offset voltage V OFFSET mv Input resistance R IN 9 k9 Standby current I SB Standby condition 2 A Standby control voltage Mute control voltage Mute attenuation ATT M High-Side Switch V SB H POWER: ON. 6. V SB L POWER: OFF. V M H MUTE: OFF. 6. V M L MUTE: ON, R 47 k9. MUTE: ON V OUT 7.7 Vrms Mute: OFF V V 8 9 db Output current I O 4 ma Difference voltage between V CC and output,v o I O 4 ma, B 9.6 V.2.6 V 6 22--6
TB29H Test Circuit 2 6 TAB V CC V CC2 C 9 F C. F OUT ( ) 9.22 F C IN PW-GND 8 R L OUT ( ) 7 OUT2 ( ).22 F C 2 IN2 PW-GND2 2 R L OUT2 ( ) F C 6 6 AC-GND OUT ( ) 7.22. F C IN PW-GND 8 R L OUT ( ) 9 OUT4 ( ) 2.22 F C 4 IN4 PW-GND4 24 R L OUT4 ( ) 2 PRE-GND RIP STBY H-SW MUTE 4 2 22 47 k9 V PLAY C2 F C4 F R MUTE : PRE-GND : PW-GND 7 22--6
TB29H THD P OUT (ch) Filter Hz : ~ khz khz : 4 Hz~ khz khz : 4 Hz~ 2 khz : 4 Hz~ 2 khz.. khz... khz THD P OUT (ch2) CC.2 V RL 測定 Filter ch のみ入力 Filter Hz : ~ khz khz Hz : ~ 4 Hz~ khz khz khz khz : 4 4 Hz~ Hz~ khz khz 4 Hz~ 2 khz : 4 Hz~ khz : 4 Hz~ 2 khz.. khz... khz.. f Hz.. f Hz.......... Filter THD P OUT (ch) Filter THD P OUT (ch4) Hz : ~ khz khz : 4 Hz~ khz khz : 4 Hz~ 2 khz : 4 Hz~ Hz : ~ khz khz : 4 Hz~ khz khz : 4 Hz~ 2 khz : 4 Hz~..... 2 khz khz khz..... 2 khz khz khz.. f Hz.. f Hz.......... 8 22--6
TB29H THD P OUT (ch) THD P OUT (ch2) f khz Filter 4 Hz~ khz.2 V f khz Filter 4 Hz~ khz.2 V..... VCC 9. V 6. V..... VCC 9. V 6. V.............. THD P OUT (ch) THD P OUT (ch4) f khz Filter 4 Hz~ khz.2 V f khz Filter 4 Hz~ khz.2 V..... VCC 9. V 6. V..... VCC 9. V 6. V.............. 9 22--6
TB29H muteatt f R.R. f Mute attenuation muteatt (db) 2 4 6 8 VOUT 2dBm ch ~4ch Ripple rejection ratio R.R. (db) 2 4 6 RG 62 9 Vrip dbm 4ch ch ch 2ch 2 k k k 8 k k k frequency f (Hz) frequency f (Hz) Voltage gain GV (db) 4 2 G V f ch ~4ch VOUT dbm..... POUT W No filter 2ch 4ch ch ch THD f k k k frequency f (Hz). k k k frequency f (Hz) 22--6
TB29H 4 khz V IN P OUT (ch) Hz 4 khz V IN P OUT (ch2) Hz 2 khz f 2 khz No filter 2 khz f 2 khz No filter 2 4 6 8 2 4 6 8 Input voltage VIN (Vrms) Input voltage VIN (Vrms) 4 khz V IN P OUT (ch) Hz 4 khz V IN P OUT (ch4) Hz 2 khz f 2 khz No filter 2 khz f 2 khz No filter 2 4 6 8 2 4 6 8 Input voltage VIN (Vrms) Input voltage VIN (Vrms) 22--6
TB29H C.T. f (ch) C.T. f (ch2) Cross talk C.T. (db) 2 4 6 VOUT dbm RG 62 9 ch2 ch Cross talk C.T. (db) 2 4 6 VOUT dbm RG 62 9 ch ch ch4 ch4 8 k k k frequency f (Hz) 8 k k k frequency f (Hz) C.T. f (ch) C.T. f (ch4) Cross talk C.T. (db) 2 4 6 VOUT dbm RG 62 9 ch ch4 ch2 Cross talk C.T. (db) 2 4 6 VOUT dbm RG 62 9 ch ch ch2 8 k k k frequency f (Hz) 8 k k k frequency f (Hz) 2 22--6
TB29H Output noise voltage VNO ( Vrms) 2 Filter ~2 khz V NO R g ch~4ch Power dissipation PD (W) 8 f khz 4ch drive 6 4 2 P D P OUT 9. V 8 V 6 V.2 V k k k 2 2 Signal source resistance Rg (9) THD f POUT W..... ch ch4 ch2 ch... Maximum output power POmax (db) f khz 8 P Omax V CC 6 4 2 8 2 4 6 8 frequency f (khz) Supply voltage VCC (V) Power dissipation PD (W) 2 8 6 4 2 PD P OUT VCC 6. V.2 V 9. V f khz Output current ICCQ (ma) 4 RL VIN 2 I CCQ V CC 2 4 6 7 2 Output power POUT/ch ( C) Supply voltage VCC (V) 22--6
TB29H THD P OUT (ch) THD P OUT (ch2).... f 2 khz khz khz.... f 2 khz khz khz. Hz. Hz........ THD P OUT (ch) THD P OUT (ch4).... f 2 khz khz khz.... f 2 khz khz khz. Hz. Hz........ 4 22--6
TB29H f khz THD P OUT (ch).2 V f khz THD P OUT (ch2).2 V... VCC 9. V... VCC 9. V... 6. V. 6. V........ f khz THD P OUT (ch).2 V f khz THD P OUT (ch4).2 V... VCC 9. V... VCC 9. V... 6. V. 6. V........ 22--6
TB29H Package Dimensions Weight: 7.7 g (typ.) 6 22--6
TB29H RESTRICTIONS ON PRODUCT USE 77EBF TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the Handling Guide for Semiconductor Devices, or TOSHIBA Semiconductor Reliability Handbook etc.. The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ( Unintended Usage ). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer s own risk. This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. The products described in this document are subject to the foreign exchange and foreign trade laws. The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. The information contained herein is subject to change without notice. 7 22--6