CS4412
TABLE OF CONTENTS
1. PIN DESCRIPTION ................................................................................................................................. 2
2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 4
RECOMMENDED OPERATING CONDITIONS .................................................................................... 4
ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 4
PWM POWER OUTPUT CHARACTERISTICS ..................................................................................... 5
DC ELECTRICAL CHARACTERISTICS ................................................................................................ 6
DIGITAL INTERFACE SPECIFICATIONS ............................................................................................. 6
DIGITAL I/O PIN CHARACTERISTICS ................................................................................................. 7
3. TYPICAL CONNECTION DIAGRAMS ................................................................................................. 8
4. APPLICATIONS ................................................................................................................................... 12
4.1 Overview ........................................................................................................................................ 12
4.2 Reset and Power-Up ...................................................................................................................... 12
4.2.1 PWM Popguard Transient Control ........................................................................................ 12
4.2.2 Recommended Power-Up Sequence .................................................................................... 12
4.2.3 Recommended Power-Down Sequence .............................................................................. 13
4.3 Output Mode Configuration ............................................................................................................ 13
4.4 Output Filters ................................................................................................................................. 14
4.4.1 Half-Bridge Output Filter ........................................................................................................ 14
4.4.2 Full-Bridge Output Filter (Stereo or Parallel) ......................................................................... 15
4.5 Device Protection and Error Reporting .......................................................................................... 16
4.5.1 Over-current Protection ......................................................................................................... 16
4.5.2 Thermal Warning, Thermal Error, and Under-Voltage Error ................................................. 16
5. POWER SUPPLY, GROUNDING, AND PCB LAYOUT ....................................................................... 17
5.1 Power Supply and Grounding ........................................................................................................ 17
5.1.1 Integrated VD Regulator ........................................................................................................ 17
5.2 QFN Thermal Pad .......................................................................................................................... 17
6. PARAMETER DEFINITIONS ................................................................................................................ 18
7. PACKAGE DIMENSIONS .................................................................................................................... 19
8. THERMAL CHARACTERISTICS ......................................................................................................... 20
8.1 Thermal Flag .................................................................................................................................. 20
9. ORDERING INFORMATION ................................................................................................................ 21
10. REVISION HISTORY .......................................................................................................................... 21
LIST OF FIGURES
Figure 1.Stereo Full-Bridge Typical Connection Diagram ........................................................................... 8
Figure 2.2.1 Channel Typical Configuration Diagram ................................................................................. 9
Figure 3.4-Channel Half-Bridge Typical Connection Diagram .................................................................. 10
Figure 4.Mono Parallel Full-Bridge Typical Connection Diagram ............................................................. 11
Figure 5.Output Filter - Half-Bridge ........................................................................................................... 14
Figure 6.Output Filter - Full-Bridge ............................................................................................................ 15
LIST OF TABLES
Table 1. I/O Power Rails ............................................................................................................................. 7
Table 2. Output Mode Configuration Options ............................................................................................ 13
Table 3. Low-Pass Filter Components - Half-Bridge ................................................................................. 14
Table 4. DC-Blocking Capacitors Values - Half-Bridge ............................................................................. 15
Table 5. Low-Pass Filter Components - Full-Bridge ................................................................................. 15
Table 6. Over-current Error Conditions ..................................................................................................... 16
Table 7. Thermal and Under-Voltage Error Conditions ............................................................................. 16
Table 8. VD Supply Level Indication ......................................................................................................... 17
2
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