Datasheet LTM4675 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Dual 9A or Single 18A μModule Regulator with Digital Power System Management |
| Pages / Page | 132 / 2 — TABLE OF CONTENTS Features ... 1. Applications .. 1. Typical Application … |
| Revision | C |
| File Format / Size | PDF / 4.3 Mb |
| Document Language | English |
TABLE OF CONTENTS Features ... 1. Applications .. 1. Typical Application .. 1. Description.. 1. Absolute Maximum Ratings .. 3
Model Line for this Datasheet
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TABLE OF CONTENTS Features ... 1
Open-Drain Pins ..54
Applications .. 1
Phase-Locked Loop and Frequency Synchronization ..55
Typical Application .. 1
RCONFIG Pin-Straps
Description.. 1
(External Resistor Configuration Pins) ..56
Absolute Maximum Ratings .. 3
Voltage Selection ..56
Order Information .. 3
Connecting the USB to the I2C/SMBus/PMBus
Pin Configuration .. 3
Control er to the LTM4675 In System ...56
Electrical Characteristics ... 4
LTpowerPlay: An Interactive GUI for Digital Power
Typical Performance Characteristics ..11
System Management ..60
Pin Functions ..13
PMBus Communication and Command Processing ..61
Simplified Block Diagram ...18
Thermal Considerations and Output Current Derating... 62
Decoupling Requirements ...18
EMI Performance ..69
Functional Diagram ..19
Safety Considerations ...69
Test Circuits ...20
Layout Checklist/Example ...69
Operation...21 Typical Applications ..71
Power Module Introduction ...21
Appendix A ...77
Power Module Configurability and Readback Data ..23 Similarity Between PMBus, SMBus and Time-Averaged and Peak Readback Data ..25 I2C 2-Wire Interface ..77 Power Module Overview ...28
Appendix B ...78
EEPROM ...32 PMBus Serial Digital Interface ..78 Serial Interface ..33
Appendix C: PMBus Command Details ..82
Device Addressing ..33 Addressing and Write Protect ...82 Fault Detection and Handling ..34 General Configuration Registers ...84 Responses to VOUT and IOUT Faults...35 On/Off/Margin ...85 Responses to Timing Faults ..36 PWM Config ...87 Responses to SVIN OV Faults ..36 Voltage ..89 Responses to OT/UT Faults ...36 Current ..92 Responses to External Faults ...36 Temperature ..95 Fault Logging ..37 Timing ...97 Bus Timeout Protection ..37 Fault Response ...99
PMBus Command Summary ..38
Fault Sharing ... 106 PMBus Commands ..38 Scratchpad .. 108
Applications Information ..45
Identification ... 108 VIN to VOUT Step-Down Ratios ..48 Fault Warning and Status .. 109 Input Capacitors ..48 Telemetry .. 116 Output Capacitors ...48 NVM (EEPROM) Memory Commands ... 120 Light Load Current Operation ..48
Package Description ... 127
Switching Frequency and Phase ...49
Package Photograph ... 129
Minimum On-Time Considerations .. 51
Package Description ... 130
Variable Delay Time, Soft-Start and Output Voltage
Revision History .. 131
Ramping ... 51
Typical Application ... 132
Digital Servo Mode ...52
Design Resources .. 132
Soft Off (Sequenced Off) ..53
Related Parts .. 132
Undervoltage Lockout ...53 Fault Detection and Handling ..54 Rev. C 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Functional Diagram Test Circuits Operation Power Module Introduction Power Module Configurability and Readback Data Time-Averaged and Peak Readback Data Power Module Overview EEPROM Serial Interface Device Addressing Fault Detection and Handling Responses to VOUT and IOUT Faults Responses to Timing Faults Responses to SVIN OV Faults Responses to OT/UT Faults Responses to External Faults Fault Logging Bus Timeout Protection PMBus Command Summary PMBus Commands Applications Information VIN to VOUT Step-Down Ratios Input Capacitors Output Capacitors Light Load Current Operation Switching Frequency and Phase Minimum On-Time Considerations Variable Delay Time, Soft-Start and Output Voltage Ramping Digital Servo Mode Soft Off (Sequenced Off) Undervoltage Lockout Fault Detection and Handling Open-Drain Pins Phase-Locked Loop and Frequency Synchronization RCONFIG Pin-Straps (External Resistor Configuration Pins) Voltage Selection Connecting the USB to the I2C/SMBus/PMBus Controller to the LTM4675 In System LTpowerPlay: An Interactive GUI for Digital Power System Management PMBus Communication and Command Processing Thermal Considerations and Output Current Derating EMI Performance Safety Considerations Layout Checklist/Example Typical Applications Appendix A Similarity Between PMBus, SMBus and I2C 2-Wire Interface Appendix B PMBus Serial Digital Interface Appendix C: PMBus Command Details Addressing and Write Protect General Configuration Registers On/Off/Margin PWM Config Voltage Current Temperature Timing Fault Response Fault Sharing Scratchpad Identification Fault Warning and Status Telemetry NVM (EEPROM) Memory Commands Package Description Package Photograph Package Description Revision History Typical Application Design Resources Related Parts
TABLE OF CONTENTS Features ... 1
Open-Drain Pins ..54
Applications .. 1
Phase-Locked Loop and Frequency Synchronization ..55
Typical Application .. 1
RCONFIG Pin-Straps
Description.. 1
(External Resistor Configuration Pins) ..56
Absolute Maximum Ratings .. 3
Voltage Selection ..56
Order Information .. 3
Connecting the USB to the I2C/SMBus/PMBus
Pin Configuration .. 3
Control er to the LTM4675 In System ...56
Electrical Characteristics ... 4
LTpowerPlay: An Interactive GUI for Digital Power
Typical Performance Characteristics ..11
System Management ..60
Pin Functions ..13
PMBus Communication and Command Processing ..61
Simplified Block Diagram ...18
Thermal Considerations and Output Current Derating... 62
Decoupling Requirements ...18
EMI Performance ..69
Functional Diagram ..19
Safety Considerations ...69
Test Circuits ...20
Layout Checklist/Example ...69
Operation...21 Typical Applications ..71
Power Module Introduction ...21
Appendix A ...77
Power Module Configurability and Readback Data ..23 Similarity Between PMBus, SMBus and Time-Averaged and Peak Readback Data ..25 I2C 2-Wire Interface ..77 Power Module Overview ...28
Appendix B ...78
EEPROM ...32 PMBus Serial Digital Interface ..78 Serial Interface ..33
Appendix C: PMBus Command Details ..82
Device Addressing ..33 Addressing and Write Protect ...82 Fault Detection and Handling ..34 General Configuration Registers ...84 Responses to VOUT and IOUT Faults...35 On/Off/Margin ...85 Responses to Timing Faults ..36 PWM Config ...87 Responses to SVIN OV Faults ..36 Voltage ..89 Responses to OT/UT Faults ...36 Current ..92 Responses to External Faults ...36 Temperature ..95 Fault Logging ..37 Timing ...97 Bus Timeout Protection ..37 Fault Response ...99
PMBus Command Summary ..38
Fault Sharing ... 106 PMBus Commands ..38 Scratchpad .. 108
Applications Information ..45
Identification ... 108 VIN to VOUT Step-Down Ratios ..48 Fault Warning and Status .. 109 Input Capacitors ..48 Telemetry .. 116 Output Capacitors ...48 NVM (EEPROM) Memory Commands ... 120 Light Load Current Operation ..48
Package Description ... 127
Switching Frequency and Phase ...49
Package Photograph ... 129
Minimum On-Time Considerations .. 51
Package Description ... 130
Variable Delay Time, Soft-Start and Output Voltage
Revision History .. 131
Ramping ... 51
Typical Application ... 132
Digital Servo Mode ...52
Design Resources .. 132
Soft Off (Sequenced Off) ..53
Related Parts .. 132
Undervoltage Lockout ...53 Fault Detection and Handling ..54 Rev. C 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Functional Diagram Test Circuits Operation Power Module Introduction Power Module Configurability and Readback Data Time-Averaged and Peak Readback Data Power Module Overview EEPROM Serial Interface Device Addressing Fault Detection and Handling Responses to VOUT and IOUT Faults Responses to Timing Faults Responses to SVIN OV Faults Responses to OT/UT Faults Responses to External Faults Fault Logging Bus Timeout Protection PMBus Command Summary PMBus Commands Applications Information VIN to VOUT Step-Down Ratios Input Capacitors Output Capacitors Light Load Current Operation Switching Frequency and Phase Minimum On-Time Considerations Variable Delay Time, Soft-Start and Output Voltage Ramping Digital Servo Mode Soft Off (Sequenced Off) Undervoltage Lockout Fault Detection and Handling Open-Drain Pins Phase-Locked Loop and Frequency Synchronization RCONFIG Pin-Straps (External Resistor Configuration Pins) Voltage Selection Connecting the USB to the I2C/SMBus/PMBus Controller to the LTM4675 In System LTpowerPlay: An Interactive GUI for Digital Power System Management PMBus Communication and Command Processing Thermal Considerations and Output Current Derating EMI Performance Safety Considerations Layout Checklist/Example Typical Applications Appendix A Similarity Between PMBus, SMBus and I2C 2-Wire Interface Appendix B PMBus Serial Digital Interface Appendix C: PMBus Command Details Addressing and Write Protect General Configuration Registers On/Off/Margin PWM Config Voltage Current Temperature Timing Fault Response Fault Sharing Scratchpad Identification Fault Warning and Status Telemetry NVM (EEPROM) Memory Commands Package Description Package Photograph Package Description Revision History Typical Application Design Resources Related Parts
