Linear ANALOG DEVICES LTM4680 Manuals

Manuals and User Guides for Linear ANALOG DEVICES LTM4680. We have 1 Linear ANALOG DEVICES LTM4680 manual available for free PDF download: Operation Manual

Linear ANALOG DEVICES LTM4680 Operation Manual (126 pages)

Dual 30A or Single 60A µModule Regulator with Digital Power System Management

Brand: Linear | Category: Computer Hardware | Size: 7.03 MB

Features
1
Applications
1
Typical Application
1
Description
1
Table of Contents
2
Absolute Maximum Ratings
4
Order Information
4
Pin Configuration
4
Electrical Characteristics
5
Typical Performance Characteristics
12
Pin Functions
15
Simplified Block Diagram
19
Decoupling Requirements
19
Functional Diagram
20
Test Circuits
21
Operation
23
Power Module Introduction
23
Power Module Overview, Major Features
23
EEPROM with ECC
24
Power-Up and Initialization
25
Soft-Start
26
Time-Based Sequencing
26
Voltage-Based Sequencing
26
Shutdown
27
Light-Load Current Operation
27
Switching Frequency and Phase
28
PWM Loop Compensation
28
Output Voltage Sensing
28
INTV CC /EXTV CC Power
28
Output Current Sensing and Sub Milliohm Dcr Current Sensing
29
Input Current Sensing
29
Polyphase Load Sharing
29
External/Internal Temperature Sense
30
RCONFIG (Resistor Configuration) Pins
30
Applicable if MFR_CONFIG_ALL[6] = 1B)
31
If MFR_CONFIG_ALL[6] = 1B)
32
Fault Detection and Handling
33
Status Registers and ALERT Masking
34
Mapping Faults to FAULT Pins
36
Power Good Pins
36
CRC Protection
36
Serial Interface
36
Communication Protection
36
Device Addressing
36
Responses to V
37
Output Overvoltage Fault Response
37
OUT and IIN /IOUT Faults
37
Output Undervoltage Response
38
Peak Output Overcurrent Fault Response
38
Responses to Timing Faults
38
Responses to V in OV Faults
38
Responses to OT/UT Faults
38
Internal Overtemperature Fault Response
38
External Overtemperature and Undertemperature Fault Response
39
Responses to Input Overcurrent and Output Undercurrent Faults
39
Responses to External Faults
39
Fault Logging
39
Bus Timeout Protection
39
SIMILARITY between Pmbus, Smbus and I 2 C 2-WIRE INTERFACE
40
Pmbus Serial Digital Interface
40
Figures 7 to 24 Pmbus Protocols
42
Pmbus Command Summary
45
Pmbus Commands
45
Applications Information
51
Input Capacitors
51
Output Capacitors
51
Light Load Current Operation
51
Switching Frequency and Phase
52
Output Current Limit Programming
53
Minimum On-Time Considerations
54
Variable Delay Time, Soft-Start and Output Voltage Ramping
54
Digital Servo Mode
54
Soft off (Sequenced Off)
55
Undervoltage Lockout
56
Fault Detection and Handling
56
Open-Drain Pins
56
Phase-Locked Loop and Frequency Synchronization
57
Input Current Sense Amplifier
58
Programmable Loop Compensation
58
Checking Transient Response
59
Polyphase Configuration
60
Controller to the Ltm4680 in System
60
Ltpowerplay: an Interactive GUI for Digital Power
61
Pmbus Communication and Command Processing
61
Thermal Considerations and Output Current Derating
63
Tables 10 Thru 11: Output Current Derating
66
Slew Rate
68
Derating Curves
69
EMI Performance
70
Safety Considerations
70
Layout Checklist/Example
70
Typical Applications
72
Pmbus Command Details
77
Addressing and Write Protect
77
General Configuration Commands
79
On/Off/Margin
80
PWM Configuration
82
Voltage
85
Input Voltage and Limits
85
Output Voltage and Limits
86
Output Current and Limits
89
Input Current and Limits
91
Temperature
92
Power Stage DCR Temperature Calibration
92
Timing
93
Timing-On Sequence/Ramp
93
Timing-Off Sequence/Ramp
94
Precondition for Restart
95
Fault Response
95
Fault Responses All Faults
95
Fault Responses Input Voltage
96
Fault Responses Output Voltage
96
Fault Responses Output Current
99
Fault Responses IC Temperature
100
Fault Responses External Temperature
101
Fault Sharing
102
Fault Sharing Propagation
102
Fault Sharing Response
104
Scratchpad
104
Identification
105
Fault Warning and Status
106
Telemetry
113
NVM Memory Commands
117
Store/Restore
117
Fault Logging
118
Block Memory Write/Read
122
Package Description
123
Revision History
125
Package Photograph
126
Design Resources
126
Related Parts
126

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Linear ANALOG DEVICES LTM4680 Operation Manual (126 pages)

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