ZHCSH28C September 2017 – May 2025 TPA3221
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Device Comparison Table
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Electrical Characteristics
- 6.6 Audio Characteristics (BTL)
- 6.7 Audio Characteristics (PBTL)
- Typical Characteristics, BTL Configuration, AD-mode
- Typical Characteristics, PBTL Configuration, AD-mode
- 7 Parameter Measurement Information
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagrams
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 Powering Up
- 8.4.2 Powering Down
- 8.4.3 Device Reset
- 8.4.4 Device Soft Mute
- 8.4.5
Device Protection System
- 8.4.5.1 Overload and Short Circuit Current Protection
- 8.4.5.2 Signal Clipping and Pulse Injector
- 8.4.5.3 DC Speaker Protection
- 8.4.5.4 Pin-to-Pin Short Circuit Protection (PPSC)
- 8.4.5.5 Overtemperature Protection OTW and OTE
- 8.4.5.6 Undervoltage Protection (UVP) and Power-on Reset (POR)
- 8.4.5.7 Fault Handling
-
9 Application and Implementation
- 9.1 Application Information
- 9.2 Typical Applications
- 9.3 Power Supply Recommendations
- 9.4 Layout
- 10Device and Documentation Support
- 11Revision History
- 12Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DDV|44
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DDV|44
訂購信息
8.3.3 AD-Mode and HEAD-Mode PWM Modulation
TPA3221 has the option of using either AD-Mode or HEAD-Mode PWM modulation scheme. AD mode has continuous switching of the two half bridge outputs in each BTL output channel. Both half bridge outputs are switching in HEAD mode, but with reduced duty cycle for idle operation and while playing small signals. With higher output levels one half bridge stops switching on HEAD mode operation. HEAD benefits both device power loss and EMI performance, where AD mode is considered to have the highest audio performance.
Figure 8-8 AD-Mode Configuration
Figure 8-9 HEAD-Mode Configuration
Figure 8-10 AD Mode Output Waveforms, Idle
Figure 8-11 AD Mode Output Waveforms, High Level Output
Figure 8-12 AD Mode Speaker Output Signals, Low or and High Level Output
Figure 8-13 HEAD Mode Output Waveforms, Idle
Figure 8-14 HEAD Mode Output Waveforms, High Level Output
Figure 8-15 HEAD Mode Speaker Output Signals, Low Level Output
Figure 8-16 HEAD Mode Speaker Output Signals, High Level Output