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TAS5802PWPR 데이터시트(PDF) 31 Page - Texas Instruments

부품명 TAS5802PWPR
상세설명  TAS5802 22W Stereo, Inductor-Less, Digital Input, Closed-Loop Class-D Audio Amplifier with 96Khz Extended Processing and Low Idle Power Dissipation
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제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
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TAS5802PWPR 데이터시트(HTML) 31 Page - Texas Instruments

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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,
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TAS5802
SLASFB7A – NOVEMBER 2024 – REVISED AUGUST 2025
Copyright © 2025 Texas Instruments Incorporated
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