2

DS786A1

CS4412A

TABLE OF CONTENTS

1. PIN DESCRIPTION ................................................................................................................................. 3

2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 5

RECOMMENDED OPERATING CONDITIONS .................................................................................... 5

ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 5

PWM POWER OUTPUT CHARACTERISTICS ..................................................................................... 6

DC ELECTRICAL CHARACTERISTICS ................................................................................................ 7

DIGITAL INTERFACE SPECIFICATIONS ............................................................................................. 7

DIGITAL I/O PIN CHARACTERISTICS ................................................................................................. 8

3. TYPICAL CONNECTION DIAGRAMS ................................................................................................. 9

4. APPLICATIONS ................................................................................................................................... 13

4.1 Overview ........................................................................................................................................ 13

4.2 Reset and Power-Up ...................................................................................................................... 13

4.2.1 PWM Popguard Transient Control ........................................................................................ 13

4.2.2 Initial Pulse Edge Delay ........................................................................................................ 14

4.2.3 Recommended Power-Up Sequence .................................................................................... 14

4.2.4 Recommended Power-Down Sequence ............................................................................... 14

4.3 Output Mode Configuration ............................................................................................................ 15

4.4 Output Filters ................................................................................................................................. 16

4.4.1 Half-Bridge Output Filter ........................................................................................................ 16

4.4.2 Full-Bridge Output Filter (Stereo or Parallel) ......................................................................... 18

4.5 Device Protection and Error Reporting .......................................................................................... 19

4.5.1 Over-Current Protection ........................................................................................................ 19

4.5.2 Thermal Warning, Thermal Error, and Under-Voltage Error ................................................. 19

5. POWER SUPPLY, GROUNDING, AND PCB LAYOUT ....................................................................... 20

5.1 Power Supply and Grounding ........................................................................................................ 20

5.1.1 Integrated VD Regulator ........................................................................................................ 20

5.2 QFN Thermal Pad .......................................................................................................................... 20

6. PARAMETER DEFINITIONS ................................................................................................................ 21

7. PACKAGE DIMENSIONS .................................................................................................................... 22

8. THERMAL CHARACTERISTICS ......................................................................................................... 23

8.1 Thermal Flag .................................................................................................................................. 23

9. ORDERING INFORMATION ................................................................................................................ 24

10. REVISION HISTORY .......................................................................................................................... 24

LIST OF FIGURES

Figure 1.Stereo Full-Bridge Typical Connection Diagram ........................................................................... 9

Figure 2.2.1 Channel Typical Connection Diagram .................................................................................. 10

Figure 3.4 Channel Half-Bridge Typical Connection Diagram .................................................................. 11

Figure 4.Parallel Full-Bridge Typical Connection Diagram .......................................................................12

Figure 5.Output Filter - Half-Bridge ........................................................................................................... 16

Figure 6.Output Filter - Full-Bridge ............................................................................................................ 18

LIST OF TABLES

Table 1. I/O Power Rails ............................................................................................................................. 8

Table 2. Typical Ramp Times for Typical VP Voltages ............................................................................. 13

Table 3. Output Mode Configuration Options ............................................................................................ 15

Table 4. Low-Pass Filter Components - Half-Bridge ................................................................................. 16

Table 5. DC-Blocking Capacitors Values - Half-Bridge ............................................................................. 17

Table 6. Low-Pass Filter Components - Full-Bridge ................................................................................. 18

Table 7. Over-current Error Conditions ..................................................................................................... 19

Table 8. Thermal and Under-Voltage Error Conditions ............................................................................. 19

Table 9. Power Supply Configuration and Settings ................................................................................... 20