SLVSGF4B
june 2022 – may 2023
TPS1641
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable and Shutdown Input (EN/SHDN)
8.3.2
Overvoltage Protection (OVP)
8.3.3
Output Slew Rate and Inrush Current Control (dVdt)
8.3.4
Active Current Limiting (ILIM) With the TPS16412, TPS16413, TPS16416, and TPS16417
8.3.5
Active Power Limiting (PLIM) With the TPS16410, TPS16411, TPS16414, and TPS16415
8.3.5.1
Internal Current Limit for the TPS16410 and TPS16411
8.3.6
Overcurrent Protection (IOCP) and Blanking Time (IDLY or PDLY) for Transient Loads
8.3.7
Fast-Trip and Short-Circuit Protection
8.3.8
Analog Load Current Monitor (IMON) on the IOCP Pin
8.3.9
IN to OUT Short Detection (TPS16410, TPS16411, TPS16412, and TPS16413)
8.3.10
Thermal Shutdown and Overtemperature Protection
8.3.11
Fault Response and Indication (FLT)
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application: 15-W Power Limiting for Low Power Circuits (LPCs)
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Setting Overvoltage Setpoints
9.2.2.2
Setting the Output Overcurrent Setpoint (IOCP)
9.2.2.3
Setting the Output Power Limit
9.2.2.4
Monitoring the Output Current
9.2.2.5
Limiting the Inrush Current and Setting the Output Slew Rate
9.2.3
Application Curves
9.3
System Examples
9.3.1
Accurate Power or Current Limiting at the Output of DC/DC or Flyback Converter
9.4
Best Design Practices
9.5
Power Supply Recommendations
9.5.1
Transient Protection
9.6
Layout
9.6.1
Layout Guidelines
9.6.2
Layout Example
10
Device and Documentation Support
10.1
Receiving Notification of Documentation Updates
10.2
Support Resources
10.3
Trademarks
10.4
Electrostatic Discharge Caution
10.5
Glossary
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DRC|10
MPDS117L
Thermal pad, mechanical data (Package|Pins)
DRC|10
QFND013N
Orderable Information
slvsgf4b_oa
slvsgf4b_pm
1
Features
Operating voltage range (IN):
4.5 V to 40 V (power limit devices)
2.7 V to 40 V (current limit devices)
Withstands negative voltages up to –1 V at output
Ultra-low ON-resistance: R
ON
= 152 mΩ (typ.)
2-W to 64-W power limiting
0.03-A to 1.8-A current limiting
IN to OUT short detection and indication on
FLT
pin
FLT
output for diagnostics and driving external PFET
±5% accurate power limit at 15 W (power limit devices)
±6% accurate current limit at 1 A (current limit devices)
Configurable overvoltage protection
Configurable overcurrent protection (I
OCP
)
Configurable blanking time for transient currents
Overvoltage protection up to 60 V with external FET
Adjustable output slew rate control (dVdt) for inrush current protection
Enable and shutdown control
Output load current monitoring on IOCP pin
Overtemperature protection (OTP) with thermal shutdown
Small footprint: QFN 3 × 3 mm, 0.5-mm pitch