tda2500 Tripath Technology Inc., tda2500 Datasheet
tda2500
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tda2500 Summary of contents
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... Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. The typical application for the TDA2500 is driving low impedance loads for professional and high- end consumer amplifiers. The feedback and voltage range of the TDA2500 can be configured externally unlike previous Tripath modules such as TA0104A. Thus, the TDA2500 is capable of emulating Tripath’ ...
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... VN12 Voltage for FET drive (Volts about VNN) Note 5: The VPP and VNN supply limits are based on the internal OV/UV sensing resistor values. The supply voltage range can be lowered via external resistors. In the typical application of the TDA2500, the external resistors and R ...
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... 0.5 V 1.25 V 0.97 1.09 V 227 250 V 216 V 111 125 V 101 118 V -221 -250 V -215 V -110 -125 V -98 -118 V 111 123 V 106 -108 -120 V -105 V -53 -60 V -48 -55 V TDA2500 – KL/ Rev. 0.9/05.05 ...
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... Rin OUT L = 49.9k:, See Application / Test Circuit P = 10W/Channel OUT L A-Weighted, input shorted, DC offset nulled to zero : , 1%, 1W TYP. MAX. UNITS W 1100 W 800 W 650 W 550 W 425 W 350 W 800 W 600 W 500 W 425 W 325 W 275 0.015 % 0.02 % 0.02 % 103 14.6 V 325 TDA2500 – KL/ Rev. 0.9/05.05 ...
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... LO2 27 HO2COM 26 25 HO2 VNN 24 VPP 23 HO1 22 H01COM 21 LO1 20 19 TDA2500 – KL/ Rev. 0.9/05.05 ...
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... Negative supply voltage sense input. This pin is biased at 1.25V nominally and left floating in typical applications. Typically, external resistors will be connected to VLOW to lower the supply voltage operation range. See the Application Information for a detailed description on how to lower the supply voltage range. TDA2500 – KL/ Rev. 0.9/05.05 ...
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... R OCR 20K 18.7K VPP VNN 18.7K AGND VPP1 VNN1 1.33M: 1.21M 1000pF VPP2 VNN2 1.33M: 3.57M: AGND AGND V5 TDA2500 – KL/ Rev. 0.9/05. 0.22uF 15:10W 0.22uF 0.22uF 15:10W 0.22uF ...
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... The value that the idle switching difference is greater than 40kHz. Please refer to the Application / Test Circuit. R Potentiometer used to manually trim the DC offset on the output of the TDA2500. OFA R Resistor that limits the manual DC offset trim range and allows for more precise OFB adjustment ...
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... C Supply decoupling for the power supply sensing pins. For optimum performance, VB these components should be located close to the TDA2500 and returned to analog ground. R Main over-voltage and under-voltage sense resistor for the negative supply (VNN). VNN1 Please refer to the Electrical Characteristics Section for the trip points as well as the hysteresis band ...
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... THD+N vs Output Power +/-90V 8OHM f = 1kHz, 7kHz AES 17 FILTER THD+N vs Output Power +/-65V +/-75V, +/-90V 8OHM f = 1kHz AES 17 FILTER THD+N vs Frequency +/- 90V 8 OHM PO =TBDW f = 1kHz BW = 22kHz, 30kHz TDA2500 – KL/ Rev. 0.9/05.05 ...
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... IMD +/-90V 8OHM Po=TBDW Channel Separation 4 ohm +/-90V Po = 10W AES 17 FILTER Efficiency and Power Dissipation +/-90V 8 OHM f =1kHz THD<=10% AES 17 FILTER TDA2500 – KL/ Rev. 0.9/05.05 ...
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... VPP and VNN. This signal is then low-pass filtered to obtain an amplified reproduction of the audio input signal. The processor portion of the TDA2500 is operated from a 5-volt supply. In the generation of the switching patterns for the output MOSFETs, the processor inserts a “break-before-make” dead time between the turn-off of one transistor and the turn-on of the other in order to minimize shoot-through currents in the MOSFETs ...
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... The MOSFET drivers in the TDA2500 are operated from voltages obtained from VN12 and LO1COM for the low-side driver, and bootstrap voltage (internally generated) and HO1COM for the high-side driver. VN12 must be a regulated 12V above VNN. N-Channel MOSFETs are used for both the top and bottom of the half bridge. The gate resistors, R used to control MOSFET slew rate and thereby minimize voltage overshoots ...
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... Refer to the Application / Test Circuit for a schematic description. TD A2500 TH ERMA L MANAGEMENT The bottom of the TDA2500 module is a metal plate and serves as a heat sink for the internal MOSFET drivers. The temperature of this plate is directly related to the power dissipated in the output drivers. The power dissipated is broken up into two main areas, the VN12 power, and the power needed to charge the parasitic capacitances ...
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... The gain of the TDA2500 is the product of the input stage gain and the modulator gain. Please refer to the sections, Input Stage Design, and Modulator Feedback Design, for a complete explanation of how to determine the external component values VTDA2500 ...
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... Depending on the maximum supply voltage, the feedback ratio will need to be adjusted to maximize performance. The value of R internal to the TDA2500 hybrid, (see explanation below) define the gain of the modulator. Once these values are chosen, based on the maximum supply voltage, the gain of the modulator will be fixed even as the supply voltage fluctuates due to current draw ...
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... There is a delay of approximately 200 milliseconds between the de-assertion of MUTE and the un-muting of the TDA2500. Please note that when the amplifier is in mute, the outputs are in a high impedance state and thus, the feedback resistors will set the output at approximately 2.5V without a load connected ...
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... IN1 and IN2 in the Application/Test Circuit. It should be noted that the DC voltage on the output of a TDA2500 amplifier with no load in mute will not be zero. This offset does not need to be nulled. The output impedance of the amplifier in mute mode is approximately 40K:(R 1 ...
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... TDA2500. Thus, a current limit into a “short” will produce a peak current level roughly twice that of an over-current into a 4: (or higher) load. The calculation above is for an over current condition (driving a 4:resistor for example). Thus, the peak current into a short will be roughly double of the calculation above ...
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... VNN = 95uA * (R || 1.27M:) UVRSTMAX VNN1 VNN TDA2500 R VNN1 38 VLOW VPP R VPP1 37 VHIGH OVRSTMIN OVRSTMIN VPP1 minus OVRSTMIN VNN1 TDA2500 – KL/ Rev. 0.9/05.05 ...
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... VN1 2 SU PPL Y VN12 is an additional supply voltage required by the TDA2500. VN12 must be 12 volts more positive than the nominal VNN. VN12 must track VNN. Generating the VN12 supply requires some care. The proper way to generate the voltage for VN12 is to use a 12V-postive supply voltage referenced to the VNN supply ...
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... OU TPUT TRAN SISTOR SELECTION The key parameters to consider when selecting what MOSFET to use with the TDA2500 are drain-source breakdown voltage (BVdss), gate charge (Qg), and on-resistance (R The BVdss rating of the MOSFET needs to be selected to accommodate the voltage swing between V and V as well as any voltage peaks caused by voltage ringing due to switching transients. With ...
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... Thus, a high quality film capacitor is strongly recommended. The typical application of the TDA2500 is driving “high impedance” loads from 12.5 ohms and above. This dictates the use of a larger value output inductor, L minimize in band output filter peaking and match better to the intended load impedance. ...
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... This information can be used to eliminate boost by putting the two channels of a TDA2500 amplifier out of phase with each other. This works because each channel is pumping out of phase with the other, and the net effect is a cancellation of pumping currents in the power supply ...
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... For ease of use, the “voltage shifting” components are external to the TDA2500, allowing the user to choose the voltage range, depending on the specific application. The most typical application is emulating a TA0104A with its associated gain and voltage range. Below is a list of instructions along with diagrams of the modifications needed to implement a “ ...
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... Add the resistor dividers to both VLOW and VHIGH as shown in Figure 8. These resistors lower the supply range of the TDA2500 to roughly +/-60V to +/-93V, with a maximum undervoltage turn on voltage of +/-55V, assuming worse case tolerances. It should be noted that the TA0104A voltage specification of +/-55V to +/-92V were the undervoltage and overvoltage turn on points, not the inner hysteresis band. The “ ...
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... TDA2500 design. OCR ). These capacitors stabilize the sensing circuit resulting and diode (D HBR TDA2500 APPLICATION VALUES R R VPP1 VPP2 487k, 1% 487k, 1% 649k, 1% 649k, 1% was used for a TA0104A OCR ) clamping structure VNN1 VNN2 442k, 1% 1.33M, 1% 590k, 1% 1.78M, 1% TDA2500 – KL/ Rev. 0.9/05.05 ...
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... 2500mil. 750mil. (63.5mm) (19mm 2858mil. (72.6mm) MAX 2913mil. (74mm) 8 position header female TDA2500 – KL/ Rev. 0.9/05. ...
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... F For more Sales Information, please visit us @ For more Technical Information, please visit www.tripath.com/cont_s.htm www.tripath.com/data.htm TDA2500 – KL/ Rev. 0.9/05.05 Other trademarks ...