2DS786A2
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 ................................................................................................................ 23
10. REVISION HISTORY .......................................................................................................................... 23
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