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TAS5822MDCPR Datasheet(PDF) 12 Page - Texas Instruments |
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TAS5822MDCPR Datasheet(HTML) 12 Page - Texas Instruments |
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12 / 90 page  6.7 Typical Characteristics 6.7.1 Bridge Tied Load (BTL) Configuration Curves with 1SPW Modulation, Fsw = 768kHz Free-air room temperature 25°C (unless otherwise noted) Measurements were made using TAS5822MEVM board and Audio Precision System 2722 with Analog Analyzer filter set to 20-kHz brickwall filter. All measurements taken with audio frequency set to 1 kHz and device PWM frequency set to 768 kHz, 1SPW Mode, the LC filter used was 10μH / 0.68 μF, Class D bandwidth = 175 kHz, unless otherwise noted. Output Power (W) 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 D016 TA=25qC RL=4: BTL Mode Fsw=768kHz D900 PVDD = 18V PVDD = 24 V FSW = 768 kHz Load=4Ω 1SPW Mode Figure 6-3. Efficiency vs Output Power-BTL Output Power (W) 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 D016 TA=25qC RL=6: BTL Mode Fsw=768kHz D901 PVDD = 18V PVDD = 24 V FSW = 768 kHz Load=6Ω 1SPW Mode Figure 6-4. Efficiency vs Output Power-BTL Output Power (W) 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 D016 TA=25qC RL=8: BTL Mode Fsw=768kHz D902 PVDD = 18V PVDD = 24 V FSW = 768 kHz Load=8Ω 1SPW Mode Figure 6-5. Efficiency vs Output Power-BTL Supply Voltage (V) 0 20 40 60 80 100 20 5 15 18 10 20 Fsw=768kHz 1SPW Modulation BTL Mode D007 D030 D904 Load=4: Load=6: Load=8: FSW = 768 kHz 1SPW Mode Figure 6-6. Idle Channel Noise vs Supply Voltage Supply Voltage (V) 4 6 8 10 12 14 16 18 20 22 24 26 0 5 10 15 20 25 30 35 40 45 50 55 60 D014 D037 Fsw=768kHz TA=25qC RL=4: 1SPW Mode D905 THD+N=1%, 2CH run THD+N=1%, 1CH run THD+N=10%, 2CH run THD+N=10%, 1CH run Continuous Output Power, 2CH run, High PVDD, RDSon increase due to die temperature increase. FSW = 768 kHz 1SPW Mode Load=4Ω Figure 6-7. Output Power vs Supply Voltage Supply Voltage (V) 4 6 8 10 12 14 16 18 20 22 24 26 0 5 10 15 20 25 30 35 40 45 50 55 60 D014 D037 Fsw=768kHz TA=25qC 1SPW Mode D906 THD+N=1%, Load=6: THD+N=1%, Load=8: THD+N=10%, Load=6: THD+N=10%, Load=8: 6Ω and 8Ω efficiency is higher than 4Ω, better thermal performance, 2CH and 1CH data almost same. FSW = 768 kHz 1SPW Mode Load=6Ω or 8Ω Figure 6-8. Output Power vs Supply Voltage TAS5822M SLASEV8 – DECEMBER 2020 www.ti.com 12 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: TAS5822M |
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