EVALPS540125ATOBO1 Infineon

UG 201708 PL17 10 5 Output PMIC Controller/ IRPS5401 User guide with DB295 and DB296 demo boards About this document Scope and purpose Note: The following information is given as a description of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. This application note is intended to provide a description of the operation of IRPS5401 and the performance of the DB295 (orderable as EVAL PS5401-25 or EVAL PS5401-40) and DB296 (orderable as EVAL PS5401-INT) demo boards. It is assumed that the user is already familiar with the datasheet and functions of the IRPS5401 device. Intended audience FAEs and customer engineers Application Note Please read the Important Notice and Warnings at the end of this document V 1.2 www.infineon.com page 1 of 63 2018-12-12 5 Output PMIC Controller/ IRPS5401 User guide with DB295 and DB296 demo boards Introduction Table of contents About this document ....................................................................................................................... 1 Table of contents ............................................................................................................................ 2 1 Introduction .......................................................................................................................... 3 2 I2C ADDRESS, PMBUS address, and address offset ..................................................................... 4 2.1 ADDR PROT Pin ....................................................................................................................................... 6 2.2 TEST ADDRESS 0Ah ................................................................................................................................. 8 3 LDO Operation ....................................................................................................................... 9 3.1 Source only mode ................................................................................................................................... 9 3.2 Sink/Source (Tracking) mode ................................................................................................................. 9 3.3 Fault settings ......................................................................................................................................... 10 4 Switcher Operation ............................................................................................................... 11 4.1 Setting the Switching Frequency .......................................................................................................... 12 4.2 AOT Mode ............................................................................................................................................... 12 4.3 External Sync ......................................................................................................................................... 14 4.4 Current Sense and Over Current Settings ............................................................................................ 15 4.5 Current Reporting Accuracy .................................................................................................................. 16 4.6 Over Voltage Settings at Start-up and Shut Down ............................................................................... 16 4.7 Over Voltage Settings under Steady State ........................................................................................... 17 4.8 Under Voltage Settings ......................................................................................................................... 18 4.9 Over Temperature ................................................................................................................................. 19 4.10 Scaling of VOUT ................................................................................................................................. 20 5 External Power Stage ............................................................................................................ 22 5.1 ISENSE AMP Gain Settings .................................................................................................................... 23 5.2 Layout Concerns .................................................................................................................................... 24 5.3 VSENSE FEEDBACK ................................................................................................................................ 24 5.4 VIN Decoupling ...................................................................................................................................... 25 6 C+D Operation ...................................................................................................................... 26 6.1 Current Balance ..................................................................................................................................... 26 6.2 Over Current Protection ........................................................................................................................ 26 7 MTP Programming................................................................................................................. 27 7.1 Programming a Single Config File ........................................................................................................ 27 7.1 Generating Multiple Config Files (*.mic) ............................................................................................... 27 7.1 Using the Multiple Config File Index Feature........................................................................................ 28 8 Modulator Details .................................................................................................................. 31 8.1 Emulated Current Mode Control with Digital P and I ........................................................................... 31 8.1 Description of Excel PI Calculator Tool ................................................................................................ 32 8.2 Recommended Circuit and Operating Parameters for Internal Switchers from the Data Sheet ....... 34 9 Efficiency, Power Dissipation, and Temp Rise ........................................................................... 35 9.1 GUI Efficiency Tool ................................................................................................................................ 35 9.2 Demo Board Efficiency and Temp Rise ................................................................................................. 37 10 DB295 and DB296 Details ....................................................................................................... 41 11 General Design Recommendations and Advisements ................................................................. 46 12 Typical Performance ............................................................................................................. 47 Application Note 2 of 63 V 1.2 2018-12-12