TAS5822MDCPR datasheet(73/90 Pages) TI

Part #	TAS5822MDCPR

Description	TAS5822M 35-W, Digital Input, Stereo, Closed-Loop Class-D Audio Amplifier with 96kHz Enhanced Processing

PDF	90 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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73 / 90 page

8.2.2 MONO

（PBTL) System

In MONO mode, TAS5822M can be used as PBTL mode to drive sub-woofer with more output power.

Figure 8-2. Mono (PBTL) System Application Schematic

8.2.2.1 Design Requirements

Table 8-1. Design Parameters

PARAMETER

VALUE

PVDD

4.5V-24V

DVDD

1.8V or 3.3V

Speaker Load

6Ω/8Ω in BTL Mode, 3Ω/4Ω in PBTL Mode

LC Filter

10uH+0.68uF

8.2.2.2 Detailed Design Procedure

8.2.2.2.1 Bootstrap Capacitors

The output stage of the TAS5822M uses a high-side NMOS driver, rather than a PMOS driver. To generate the

gate driver voltage for the high-side NMOS, a bootstrap capacitor for each output terminal acts as a floating

power supply for the switching cycle. Use 0.47-µF capacitors to connect the appropriate output pin (OUT_X) to

the bootstrap pin (BST_X). For example, connect a 0.47-µF capacitor between OUT_A and BST_A for

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TAS5822M

SLASEV8 – DECEMBER 2020

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TAS5822MDCPR Datasheet(PDF) 73 Page - Texas Instruments