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TPA3110D2-Q1 Datasheet(PDF) 24 Page - Texas Instruments |
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TPA3110D2-Q1 Datasheet(HTML) 24 Page - Texas Instruments |
24 / 36 page ![]() OUTP OUTN OUTP Speaker Current OUTP OUTN OUTP-OUTN Speaker Current OUTP OUTN OUTP-OUTN Speaker Current 0V 0V PVCC NoOutput PositiveOutput NegativeOutput 0A 0A 0V -PVCC OUTP-OUTN TPA3110D2-Q1 SLOS794B – SEPTEMBER 2012 – REVISED SEPTEMBER 2015 www.ti.com Typical Application (continued) The bootstrap capacitors connected between the BSxx pins and corresponding output function as a floating power supply for the high-side N-channel power MOSFET gate drive circuitry. During each high-side switching cycle, the bootstrap capacitors hold the gate-to-source voltage high enough to keep the high-side MOSFETs turned on. 8.2.2.8 Differential Inputs The differential input stage of the amplifier cancels any noise that appears on both input lines of the channel. To use the TPA3110D2-Q1 with a differential source, connect the positive lead of the audio source to the INP input and the negative lead from the audio source to the INN input. To use the TPA3110D2-Q1 with a single-ended source, AC-ground the INP or INN input through a capacitor equal in value to the input capacitor on INN or INP and apply the audio source to either input. In a single-ended input application, the unused input should be AC- grounded at the audio source instead of at the device input for best noise performance. For good transient performance, the impedance seen at each of the two differential inputs should be the same. The impedance seen at the inputs should be limited to an RC time constant of 1 ms or less if possible. This is to allow the input DC blocking capacitors to become completely charged during the 14 ms power-up time. If the input capacitors are not allowed to completely charge, there will be some additional sensitivity to component matching which can result in pop if the input components are not well matched. 8.2.2.9 Using Low-ESR Capacitors Low-ESR capacitors are recommended throughout this application section. A real (as opposed to ideal) capacitor can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this resistor minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this resistance, the more the real capacitor behaves like an ideal capacitor. 8.2.3 Application Curve Figure 42. The TPA3110D2-Q1 Output Voltage and Current Waveforms into an Inductive Load 24 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: TPA3110D2-Q1 |
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