SLVSHH5B
August 2023 – December 2024
TPS25983
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device Comparison Table
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Undervoltage Protection (UVLO and UVP)
7.3.2
Overvoltage Protection (OVP)
7.3.3
Inrush Current, Overcurrent, and Short-Circuit Protection
7.3.3.1
Slew Rate and Inrush Current Control (dVdt)
7.3.3.2
Circuit Breaker
7.3.3.3
Active Current Limiting
7.3.3.4
Short-Circuit Protection
7.3.4
Overtemperature Protection (OTP)
7.3.5
Analog Load Current Monitor (IMON)
7.3.6
Power Good (PG)
7.3.7
Reverse Current Blocking FET Driver
7.3.8
Fault Response
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application: Standby Power Rail Protection in Datacenter Servers
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Device Selection
8.2.2.2
Setting the Current Limit Threshold: RILIM Selection
8.2.2.3
Setting the Undervoltage and Overvoltage Lockout Set Point
8.2.2.4
Choosing the Current Monitoring Resistor: RIMON
8.2.2.5
Setting the Output Voltage Ramp Time (TdVdt)
8.2.2.5.1
Case 1: Start-Up Without Load: Only Output Capacitance COUT Draws Current
8.2.2.5.2
Case 2: Start-Up With Load: Output Capacitance COUT and Load Draw Current
8.2.2.6
Setting the Transient Overcurrent Blanking Interval (tITIMER)
8.2.2.7
Setting the Auto-Retry Delay and Number of Retries
8.2.3
Application Curves
8.3
System Examples
8.3.1
Optical Module Power Rail Path Protection
8.3.1.1
Design Requirements
8.3.1.2
Device Selection
8.3.1.3
External Component Settings
8.3.1.4
Voltage Drop
8.3.1.5
Application Curves
8.3.2
Input Protection for 12-V Rail Applications: PCIe Cards, Storage Interfaces, and DC Fans
8.3.3
Priority Power MUXing
8.4
Power Supply Recommendations
8.4.1
Transient Protection
8.4.2
Output Short-Circuit Measurements
8.5
Layout
8.5.1
Layout Guidelines
8.5.2
Layout Example
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
Package Options
Mechanical Data (Package|Pins)
RGE|24
MPQF124G
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND572A
Orderable Information
slvshh5b_oa
slvshh5b_pm
1
Features
Wide input voltage range: 2.7V to 26V
30V absolute maximum
Low on-resistance: R
ON
= 2.7mΩ typical
Adjustable current limit threshold
Range: 2A to 20A
Accuracy: ±8% (typical for I
LIM
> 5A)
Circuit breaker and current limiter options
Adjustable overcurrent blanking timer
Handles load transients without tripping
Accurate current monitor output
±1.5% (typical at 25°C for I
OUT
> 3A)
±3% (maximum for I
OUT
> 3A)
User configurable fault response
Latch-off or auto-retry
Number of retries (finite or indefinite)
Delay between retries
Robust short-circuit protection
Fast-trip response time < 400ns typical
Immune to line transients – no nuisance tripping
Adjustable output slew rate (dVdt) control
Option to drive external FET for reverse current blocking in disabled/OFF state
Adjustable undervoltage lockout
Adjustable overvoltage lockout
Integrated overtemperature protection
Power good indication
Small footprint: 4mm × 4mm QFN package