Analog Devices LTM4683 Power Management Manuals

Manuals and User Guides for Analog Devices LTM4683 Power Management. We have 1 Analog Devices LTM4683 Power Management manual available for free PDF download: Manual

Analog Devices LTM4683 Manual (132 pages)

Brand: Analog Devices | Category: Computer Hardware | Size: 6 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
23
Decoupling Requirements
23
Functional Diagram
24
Test Circuits
25
Operation
27
Power Module Introduction
27
Power Module Major Features Overview
27
EEPROM with ECC
28
Power-Up and Initialization
29
Soft-Start
30
Time-Based Sequencing
30
Voltage-Based Sequencing
31
Shutdown
31
Light-Load Current Operation
31
Switching Frequency and Phase
32
PWM Loop Compensation
32
Output Voltage Sensing
32
INTV CC /VBIAS Power
33
Output Current Sensing and Sub Milliohm DCR Current Sensing
33
Input Current Sensing
33
Polyphase Load Sharing
34
Internal Temperature Sense
34
RCONFIG (Resistor Configuration) Pins
34
CONFIG_ALL[6] = 1B) Top Resistor = 14.3K
35
Or 23 Channels, Set Top Resistor to 14.3K
36
Setting)
37
Examples Expressed in 7- and 8-Bit Addressing
37
Fault Detection and Handling
37
Status Registers and ALERT Masking
38
Mapping Faults to Faultn Pins
40
Power Good Pins
40
CRC Protection
40
Serial Interface
40
Communication Protection
40
Device Addressing
41
Responses to VOUT and IIN /IOUT Faults
41
Output Overvoltage Fault Response
41
Output Undervoltage Response
42
Peak Output Overcurrent Fault Response
42
Responses to Timing Faults
42
Responses to V in OV Faults
42
Responses to OT/UT Faults
43
Internal Overtemperature Fault Response
43
Overtemperature and Undertemperature Fault Response
43
Responses to Input Overcurrent and Output Undercurrent Faults
43
Responses to External Faults
43
Fault Logging
43
Bus Timeout Protection
44
Similarity between Pmbus, Smbus and I 2 C 2-Wire Interface
44
Pmbus Serial Digital Interface
44
Pmbus Command Summary
49
Pmbus Commands
49
Applications Information
55
Input Capacitors
55
Output Capacitors
55
Light Load Current Operation
55
Switching Frequency and Phase
56
Output Current Limit Programming
57
Minimum On-Time Considerations
58
Variable Delay Time, Soft-Start and Output Voltage Ramping
58
Digital Servo Mode
58
Soft off (Sequenced Off)
59
Undervoltage Lockout
60
Fault Detection and Handling
60
Open-Drain Pins
61
Phase-Locked Loop and Frequency Synchronization
61
Input Current Sense Amplifier
62
Programmable Loop Compensation
62
Checking Transient Response
62
Polyphase Configuration
64
Connecting the USB to I 2 C/Smbus/Pmbus Controller to the LTM4683 in System
64
Ltpowerplay: an Interactive GUI for Digital Power
65
Pmbus Communication and Command Processing
65
Thermal Considerations and Output Current Derating
67
EMI Performance
76
Safety Considerations
76
Layout Checklist/Example
76
Typical Applications
78
Pmbus Command Details
83
Addressing and Write Protect
83
General Configuration Commands
85
On/Off/Margin
86
PWM Configuration
88
Voltage
91
Input Voltage and Limits
91
Output Voltage and Limits
92
Output Current and Limits
95
Input Current and Limits
97
Temperature
98
Power Stage DCR Temperature Calibration
98
Power Stage Temperature Limits
98
Timing
99
Timing-On Sequence/Ramp
99
Timing-Off Sequence/Ramp
100
Precondition for Restart
101
Fault Response
101
Fault Responses All Faults
101
Fault Responses Input Voltage
102
Fault Responses Output Voltage
102
Fault Responses Output Current
105
Fault Responses IC Temperature
106
Fault Responses External Temperature
107
Fault Sharing
108
Fault Sharing Propagation
108
Fault Sharing Response
110
Scratchpad
110
Identification
111
Fault Warning and Status
112
Telemetry
118
NVM Memory Commands
122
Store/Restore
122
Fault Logging
123
Block Memory Write/Read
127
Package Description
128
Package Description
129
Revision History
131
Package Photos
132
Design Resources
132
Related Parts
132

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