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TAS5802PWPR Datasheet(PDF) 30 Page - Texas Instruments |
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TAS5802PWPR Datasheet(HTML) 30 Page - Texas Instruments |
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30 / 106 page  • Play Mode. Register 0x68h [1:0]=11, device stays in Play Mode. 6.4.6 Device Modulation TAS5802 has 3 modulation schemes: BD Modulation, 1SPW modulation and Hybrid modulation. Select modulation schemes for TAS5802 with Register 0x02 [1:0]-DEVICE_CTRL1. 6.4.6.1 BD Modulation This is a modulation scheme that allows operation without the classic LC reconstruction filter when the amp is driving an inductive load with short speaker wires. Each output is switching from 0 volts to the supply voltage. The OUTPx and OUTNx are in phase with each other with no input so that there is little or no current in the speaker. The duty cycle of OUTPx is greater than 50% and OUTNx is less than 50% for positive output voltages. The duty cycle of OUTPx is less than 50% and OUTNx is greater than 50% for negative output voltages. The voltage across the load sits at 0 V throughout most of the switching period, reducing the switching current, which reduces any I2R losses in the load. 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 6-10. BD Mode Modulation TAS5802 SLASFB7A – NOVEMBER 2024 – REVISED AUGUST 2025 www.ti.com 30 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: TAS5802 |
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