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TAS5802PWPR Datasheet(PDF) 31 Page - Texas Instruments |
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TAS5802PWPR Datasheet(HTML) 31 Page - Texas Instruments |
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31 / 106 page  6.4.6.2 1SPW Modulation The 1SPW mode alters the normal modulation scheme in order to achieve higher efficiency with a slight penalty in THD degradation and more attention required in the output filter selection. In Low Idle Current mode the outputs operate at ~14% modulation during idle conditions. When an audio signal is applied one output will decrease and one will increase. The decreasing output signal will quickly rail to GND at which point all the audio modulation takes place through the rising output. The result is that only one output is switching during a majority of the audio cycle. Efficiency is improved in this mode due to the reduction of switching losses. OUTP OUTN OUTP -OUTN Speaker Current OUTP OUTN OUTP -OUTN Speaker Current OUTP OUTN OUTP -OUTN Speaker Current 0 V 0 V PVCC No Output Positive Output Negative Output 0 A 0 A 0 V -PVCC Figure 6-11. 1SPW Mode Modulation 6.4.6.3 Hybrid Modulation Hybrid Modulation is designed to minimized power loss without compromising the THD+N performance, and is optimized for battery-powered applications. With Hybrid modulation enabled, device detects the input signal level and adjust PWM duty cycle dynamically based on PVDD. Hybrid modulation achieves ultra low idle current and maintains the same audio performance level as the BD Modulation. In order to minimize the power dissipation, www.ti.com TAS5802 SLASFB7A – NOVEMBER 2024 – REVISED AUGUST 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 31 Product Folder Links: TAS5802 |
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