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TPS16890 9V–80V, 3.65mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry
SLVSHO1
March 2025
TPS1689
ADVANCE INFORMATION
CONTENTS
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TPS16890 9V–80V, 3.65mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry
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
5.6
PMBus and GPIO DC Characteristics
5.7
Telemetry
5.8
Logic Interface
5.9
Timing Requirements
5.10
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Undervoltage Protection
6.3.2
Insertion Delay
6.3.3
Overvoltage Protection
6.3.4
Inrush Current, Overcurrent, and Short-Circuit Protection
6.3.4.1
Slew rate (dVdt) and Inrush Current Control
6.3.4.1.1
Start-Up Timeout
6.3.4.2
Steady-State Overcurrent Protection (Circuit-Breaker)
6.3.4.3
Active Current Limiting During Start-Up
6.3.4.4
Short-Circuit Protection
6.3.5
Analog Load Current Monitor (IMON)
6.3.6
Overtemperature Protection
6.3.7
Analog Junction Temperature Monitor (TEMP)
6.3.8
FET Health Monitoring
6.3.9
Single Point Failure Mitigation
6.3.9.1
IMON Pin Single Point Failure
6.3.9.2
IREF Pin Single Point Failure
6.3.10
General Purpose Digital Input/Output Pins
6.3.10.1
Fault Response and Indication (FLT)
6.3.10.2
Power Good Indication (PG)
6.3.10.3
Parallel Device Synchronization (SWEN)
6.3.11
Stacking Multiple eFuses for Unlimited Scalability
6.3.11.1
Current Balancing During Start-Up
6.3.12
Quick Output Discharge(QOD)
6.3.13
Write Protect Feature(WP#)
6.3.14
PMBus® Digital Interface
6.3.14.1
PMBus® Device Addressing
6.3.14.2
SMBus Protocol
6.3.14.3
SMBus™ Message Formats
6.3.14.4
Packet Error Checking
6.3.14.5
Group Commands
6.3.14.6
SMBus™ Alert Response Address (ARA)
6.3.14.7
PMBus® Commands
6.3.14.8
Analog-to-digital Converter
6.3.14.9
Digital-to-analog Converters
6.3.14.10
DIRECT format Conversion
6.3.14.11
Blackbox Fault Recording
6.4
Device Functional Modes
7
Application and Implementation
7.1
Application Information
7.1.1
Single Device, Standalone Operation
7.1.2
Single TPS1689 and multiple TPS1685 Devices, Parallel Connection
7.1.3
Multiple TPS1689 Devices: Parallel Connection With Individual Telemetry
7.1.4
Multiple Devices, Independent Operation (Multi-zone)
7.2
Typical Application: 54-V, 2-kW Power Path Protection with PMBus® Interface in Datacenter Servers
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.3
Application Performance Plots
7.3
Power Supply Recommendations
7.3.1
Transient Protection
7.3.2
Output Short-Circuit Measurements
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Application Limitation and Errata
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
11.1
Mechanical Data
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
VMA|23
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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