SLVSGF4C June   2022  – June 2026 TPS1641

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Enable and Shutdown Input (EN/SHDN)
      2. 7.3.2  Overvoltage Protection (OVP)
      3. 7.3.3  Output Slew Rate and Inrush Current Control (dVdt)
      4. 7.3.4  Active Current Limiting (ILIM) With the TPS16412, TPS16413, TPS16416, and TPS16417
      5. 7.3.5  Active Power Limiting (PLIM) With the TPS16410, TPS16411, TPS16414, and TPS16415
        1. 7.3.5.1 Internal Current Limit for the TPS16410 and TPS16411
      6. 7.3.6  Overcurrent Protection (IOCP) and Blanking Time (IDLY or PDLY) for Transient Loads
      7. 7.3.7  Fast-Trip and Short-Circuit Protection
      8. 7.3.8  Analog Load Current Monitor (IMON) on the IOCP Pin
      9. 7.3.9  IN to OUT Short Detection (TPS16410, TPS16411, TPS16412, and TPS16413)
      10. 7.3.10 Thermal Shutdown and Overtemperature Protection
      11. 7.3.11 Fault Response and Indication (FLT)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application: 15W Power Limiting for Low Power Circuits (LPCs)
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting Overvoltage Setpoints
        2. 8.2.2.2 Setting the Output Overcurrent Setpoint (IOCP)
        3. 8.2.2.3 Setting the Output Power Limit
        4. 8.2.2.4 Monitoring the Output Current
        5. 8.2.2.5 Limiting the Inrush Current and Setting the Output Slew Rate
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Accurate Power or Current Limiting at the Output of DC/DC or Flyback Converter
    4. 8.4 Best Design Practices
    5. 8.5 Power Supply Recommendations
      1. 8.5.1 Transient Protection
    6. 8.6 Layout
      1. 8.6.1 Layout Guidelines
      2. 8.6.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

3 Description

The TPS1641x family are integrated eFuse devices with accurate power limit or current limit. The device family provides robust protection with integrated overcurrent protection, overvoltage protection, IN to OUT short detection, and overtemperature protection.

TPS16410, TPS16411, TPS16414, and TPS16415 devices provide ± 5% power limiting at 15W for loads and also provide configurable blanking time for transient overload or overcurrent events. Use TPS16410, TPS16411, TPS16414, and TPS16415 in low-power circuits (LPCs) for 15W power limiting as per IEC60335 and UL60730 standards. TPS1641x devices provide protection from adjacent pin short and pin short to GND faults.

Applications such as backplane power protection in PLC and DCS modules configure the current limit with a resistor on the ILIM pin. TPS16412, TPS16413, TPS16416, and TPS16417 devices provide ± 6% current limiting at 1A for loads and also provide output slew rate control with dVdT pin to charge large capacitive loads at power up.

TPS1641x features IN to OUT short detection and indicate IN to OUT short on the FLT pin. The FLT pin either provides to MCU as digital input or to drive an external PFET.

The devices are characterized for operation over a junction temperature range from –40°C to +125°C.

Package Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2)
TPS1641x VSON (10) 3.00mm × 3.00mm
(1) For all available packages, see the orderable addendum at the end of the datasheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPS1641 Simplified Schematic Simplified Schematic
TPS1641 Configurable Blanking Time for Transient Loads Configurable Blanking Time for Transient Loads