SLVSHH4
July 2024
TPS546E25
ADVANCE INFORMATION
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
D-CAP4 Control
6.3.1.1
Loop Compensation
6.3.2
Internal VCC LDO and Using an External Bias on VCC Pin and VDRV Pin
6.3.3
Input Undervoltage Lockout (UVLO)
6.3.3.1
Fixed VCC_OK UVLO
6.3.3.2
Fixed VDRV UVLO
6.3.3.3
Programmable PVIN UVLO
6.3.3.4
Control (CNTL)Enable
6.3.4
Differential Remote Sense and Internal, External Feedback Divider
6.3.5
Set the Output Voltage and VORST#
6.3.6
Start-Up and Shutdown
6.3.7
Dynamic Voltage Slew Rate
6.3.8
Set Switching Frequency
6.3.9
Switching Node (SW)
6.3.10
Overcurrent Limit and Low-side Current Sense
6.3.11
Negative Overcurrent Limit
6.3.12
Zero-Crossing Detection
6.3.13
Input Overvoltage Protection
6.3.14
Output Overvoltage and Undervoltage Protection
6.3.15
Overtemperature Protection
6.3.16
Telemetry
6.4
Device Functional Modes
6.4.1
Forced Continuous-Conduction Mode
6.4.2
DCM Light Load Operation
6.4.3
Powering the Device From a 12V Bus
6.4.4
Powering the Device From a Split-rail Configuration
6.4.5
Pin Strapping
6.4.5.1
Programming MSEL1
6.4.5.2
Programming PMB_ADDR
6.4.5.3
Programming MSEL2
6.4.5.4
Programming VSEL\FB
6.5
Programming
6.5.1
Supported PMBus Commands
7
Register Maps
7.1
Conventions for Documenting Block Commands
7.2
(01h) OPERATION
7.3
(02h) ON_OFF_CONFIG
7.4
(03h) CLEAR_FAULTS
7.5
(04h) PHASE
7.6
(09h) P2_PLUS_WRITE
7.7
(0Ah) P2_PLUS_READ
7.8
(0Eh) PASSKEY
7.9
(10h) WRITE_PROTECT
7.10
(15h) STORE_USER_ALL
7.11
(16h) RESTORE_USER_ALL
7.12
(19h) CAPABILITY
7.13
(1Bh) SMBALERT_MASK
7.14
(20h) VOUT_MODE
7.15
(21h) VOUT_COMMAND
7.16
(22h) VOUT_TRIM
7.17
(24h) VOUT_MAX
7.18
(25h) VOUT_MARGIN_HIGH
7.19
(26h) VOUT_MARGIN_LOW
7.20
(27h) VOUT_TRANSITION_RATE
7.21
(29h) VOUT_SCALE_LOOP
7.22
(2Ah) VOUT_SCALE_MONITOR
7.23
(2Bh) VOUT_MIN
7.24
(33h) FREQUENCY_SWITCH
7.25
(35h) VIN_ON
7.26
(36h) VIN_OFF
7.27
(39h) IOUT_CAL_OFFSET
7.28
(40h) VOUT_OV_FAULT_LIMIT
7.29
(41h) VOUT_OV_FAULT_RESPONSE
7.30
(42h) VOUT_OV_WARN_LIMIT
7.31
(43h) VOUT_UV_WARN_LIMIT
7.32
(44h) VOUT_UV_FAULT_LIMIT
7.33
(45h) VOUT_UV_FAULT_RESPONSE
7.34
(46h) IOUT_OC_FAULT_LIMIT
7.35
(48h) IOUT_OC_LV_FAULT_LIMIT
7.36
(49h) IOUT_OC_LV_FAULT_RESPONSE
7.37
(4Ah) IOUT_OC_WARN_LIMIT
7.38
(4Fh) OT_FAULT_LIMIT
7.39
(50h) OT_FAULT_RESPONSE
7.40
(51h) OT_WARN_LIMIT
7.41
(55h) VIN_OV_FAULT_LIMIT
7.42
(60h) TON_DELAY
7.43
(61h) TON_RISE
7.44
(64h) TOFF_DELAY
7.45
(65h) TOFF_FALL
7.46
(78h) STATUS_BYTE
7.47
(79h) STATUS_WORD
7.48
(7Ah) STATUS_VOUT
7.49
(7Bh) STATUS_IOUT
7.50
(7Ch) STATUS_INPUT
7.51
(7Dh) STATUS_TEMPERATURE
7.52
(7Eh) STATUS_CML
7.53
(7Fh) STATUS_OTHER
7.54
(80h) STATUS_MFR_SPECIFIC
7.55
(88h) READ_VIN
7.56
(8Bh) READ_VOUT
7.57
(8Ch) READ_IOUT
7.58
(8Dh) READ_TEMPERATURE_1
7.59
(98h) PMBUS_REVISION
7.60
(99h) MFR_ID
7.61
(9Ah) MFR_MODEL
7.62
(9Bh) MFR_REVISION
7.63
(ADh) IC_DEVICE_ID
7.64
(AEh) IC_DEVICE_REV
7.65
(D1h) SYS_CFG_USER1
7.66
(D2h) PMBUS_ADDR
7.67
(D4h) COMP
7.68
(D5h) VBOOT_OFFSET_1
7.69
(D6h) STACK_CONFIG
7.70
(D8h) PIN_DETECT_OVERRIDE
7.71
(D9h) NVM_CHECKSUM
7.72
(DAh) READ_TELEMETRY
7.73
(79h) STATUS_ALL
7.74
(DDh) EXT_WRITE_PROTECTION
7.75
(A4h) IMON_CAL
7.76
(FCh) FUSION_ID0
7.77
(FDh) FUSION_ID1
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Application
8.2.2
Design Requirements
8.2.3
Detailed Design Procedure
8.2.3.1
Input Capacitor Selection
8.2.3.2
Inductor Selection
8.2.3.3
Output Capacitor Selection
8.2.3.4
Compensation Selection
8.2.3.5
VCC and VRDV Bypass Capacitors
8.2.3.6
BOOT Capacitor Selection
8.2.3.7
VOSNS and GOSNS Capacitor Selection
8.2.3.8
PMBus Address Resistor Selection
8.2.4
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
8.4.2.1
Thermal Performance on TPS546E25EVM
9
Device and Documentation Support
9.1
Receiving Notification of Documentation Updates
9.2
Support Resources
9.3
Trademarks
9.4
Electrostatic Discharge Caution
9.5
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
11.1
Tape and Reel Information
Package Options
Mechanical Data (Package|Pins)
RXX|37
MPQF618C
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvshh4_oa
9.5
Glossary
TI Glossary
This glossary lists and explains terms, acronyms, and definitions.