TIDUF75
April
2025
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1
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Description
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Resources
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Features
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Applications
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6
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1System Description
- 1.1
Key System Specifications
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2System Overview
- 2.1
System Block Diagram
- 2.2
Design Considerations
- 2.2.1
Determining the Number of eFuse Devices to use in Parallel
- 2.2.2
Setting up the Primary and Secondary Devices
in a Parallel Configuration
- 2.2.3
Selecting the CDVDT Capacitor
to Control the Output Slew Rate and Start-Up Time
- 2.2.4
Selecting the RIREF Resistor to set
the Reference Voltage for Overcurrent Protection and Active Current Sharing
- 2.2.5
Selecting the RIMON Resistor to set
the Overcurrent (Circuit Breaker) and Fast-Trip Thresholds During Steady-State
- 2.2.6
Selecting the RILIM Resistor to set the Current Limit and Fast-Trip Thresholds During Start-Up and the Active Sharing Threshold During Steady-State
- 2.2.7
Selecting the CITIMER Capacitor to
Set the Overcurrent Blanking Timer
- 2.2.8
Selecting the Resistors to set the Under-voltage Lockout Threshold
- 2.2.9
Selecting the R-C Filter Between
VIN and VDD
- 2.2.10
Selecting the Pullup Resistors and Power Supplies for SWEN, PG, FLT, and CMPOUT Pins
- 2.2.11
TVS Diode Selection at Input and Schottky Diode Selection at Output
- 2.2.12
Selecting CIN and
COUT
- 2.3
Highlighted Products
- 2.3.1
TPS25985
- 2.3.2
LM94022 and LM94022-Q1
- 2.3.3
INA241x
- 2.3.4
TLV760
- 2.3.5
SN74LVC1G123
- 2.3.6
UCC27511A
- 2.3.7
CSD18510Q5B
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3Hardware, Software, Testing Requirements, and Test Results
- 3.1
Hardware Requirements
- 3.2
Test Setup
- 3.3
Test Results
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36
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4Design and Documentation Support
- 4.1
Design Files
- 4.1.1
Schematics
- 4.1.2
Bill of Materials
- 4.1.3
Altium Project
- 4.1.4
Gerber Files
- 4.2
Tools
- 4.3
Documentation Support
- 4.4
Support Resources
- 4.5
Trademarks
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5About the Author
4.3 Documentation Support
- Texas Instruments, TPS25985x 4.5V – 16V, 0.59mΩ, 80A Stackable eFuse with
Accurate and Fast Current Monitor Data Sheet
- Texas Instruments, LM94022, LM94022-Q1 1.5V, SC70, Multi-Gain Analog
Temperature Sensor With Class-AB Output Data Sheet
- Texas Instruments, SN74LVC1G123 Single Retriggerable Monostable Multivibrator
With Schmitt-Trigger Inputs Data Sheet
- Texas Instruments, INA241x –5V to 110V, Bidirectional, Ultra-Precise Current
Sense Amplifier With Enhanced PWM Rejection Data Sheet
- Texas Instruments, UCC2751x Single-Channel, High-Speed, Low-Side Gate Driver
(With 4A Peak Source and 8A Peak Sink) Data Sheet
- Texas Instruments, TLV760 100mA, 30V, Fixed-Output, Linear-Voltage Regulator
Data Sheet
- Texas Instruments, CSD18510Q5B N-Channel NexFET™ Power MOSFET Data
Sheet