SLVSE94G September   2018  – June 2024

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 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Hot Plug-In and Inrush Current Control
        1. 8.3.1.1 Thermal Regulation Loop
      2. 8.3.2  PGOOD and PGTH
        1. 8.3.2.1 PGTH as VOUT Sensing Input
      3. 8.3.3  Undervoltage Lockout (UVLO)
      4. 8.3.4  Overvoltage Protection (OVP)
      5. 8.3.5  Input Reverse Polarity Protection (B_GATE, DRV)
      6. 8.3.6  Reverse Current Protection
      7. 8.3.7  Overload and Short-Circuit Protection
        1. 8.3.7.1 Overload Protection
          1. 8.3.7.1.1 Active Current Limiting at 1 × IOL (TPS26630 and TPS26632 Only)
          2. 8.3.7.1.2 Active Current Limiting With 2 × IOL Pulse Current Support (TPS26631, TPS26633, TPS26635, TPS26636, and TPS26637 Only)
        2. 8.3.7.2 Short-Circuit Protection
          1. 8.3.7.2.1 Start-Up With Short Circuit on Output
      8. 8.3.8  Output Power Limiting, PLIM (TPS26632, TPS26633, TPS26635, TPS26636, and TPS26637 Only)
      9. 8.3.9  Current Monitoring Output (IMON)
      10. 8.3.10 FAULT Response (FLT)
      11. 8.3.11 IN_SYS, IN, OUT, and GND Pins
      12. 8.3.12 Thermal Shutdown
      13. 8.3.13 Low Current Shutdown Control (SHDN)
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application: Power Path Protection in a PLC System
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Programming the Current-Limit Threshold—R(ILIM) Selection
        2. 9.2.2.2 Undervoltage Lockout and Overvoltage Set Point
        3. 9.2.2.3 Output Buffer Capacitor – COUT
        4. 9.2.2.4 PGTH Set Point
        5. 9.2.2.5 Setting Output Voltage Ramp Time—(tdVdT)
          1. 9.2.2.5.1 Support Component Selections— RPGOOD and C(IN)
        6. 9.2.2.6 Selecting Q1, Q2 and TVS Clamp for Surge Protection
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 Simple 24-V Power Supply Path Protection
      2. 9.3.2 Priority Power MUX Operation
      3. 9.3.3 Input Protection for a Compact 24-V Auxiliary Power Supply for Servo Drives
    4. 9.4 Dos and Do Nots
    5. 9.5 Power Supply Recommendations
      1. 9.5.1 Transient Protection
    6. 9.6 Layout
      1. 9.6.1 Layout Guidelines
      2. 9.6.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.1 Overview

The TPS2663x devices are a family of 60-V industrial eFuses. The devices provides robust protection for all systems and applications powered from 4.5 V to 60 V. With an external N-channel FET the devices can be used to protect the loads from negative supply voltages down to –60 V. For hot-pluggable boards, the devices provide hot-swap power management with inrush current control and programmable output voltage slew rate features using the dVdT pin. Load, source, and device protections are provided with many programmable features including overcurrent, overvoltage and undervoltage. The precision overcurrent limit (±7% at 6 A) helps to minimize over design of the input power supply, while the fast response short-circuit protection 1-µs (typical) immediately isolates the faulty load from the input supply when a short circuit is detected. The device features fast reverse current blocking response (0.17 µs). The internal robust protection control blocks of the TPS2663x along with its ±60-V rating, helps to simplify the system designs for the industrial surge compliance ensuring complete protection of the load and the device. The 60-V maximum DC operating and 70-V absolute maximum voltage rating enables system protection from 60-V DC input supply faults and from industrial SELV power supplies.

By monitoring the output (Load) voltage through the PGTH pin, the device distinguishes between real system faults and system transients and the turn-ON delay during a fault recovery is controlled accordingly. The valid load voltage detection threshold can be adjusted using a resistor ladder network from OUT, PGTH and GND. This scheme ensures fast recovery during system tests like voltage interruption and brown-out tests, EMC testing like Electrical Fast Transients (IEC61000-4-4) and Surge (IEC61000-4-5).

The TPS26632, TPS26633, TPS26635 TPS26636 and TPS26637 devices integrate adjustable output power limiting (PLIM) functionality that simplifies the system design requiring compliance in accordance to standards like IEC61010-1 and UL1310.

The devices provides precise monitoring of voltage bus for brown-out, overvoltage conditions and asserts fault signal for the downstream system. The device overall threshold accuracy of 2% ensures tight supervision of bus, eliminating the need for a separate supply voltage supervisor chip. The devices monitors V(IN_SYS) and V(OUT) to provide true reverse current blocking when a reverse condition or input power failure condition is detected.

Additional features of the TPS2663x devices include:

  • ±6% current monitor output (IMON) for health monitoring of the system
  • A choice of latch-off or automatic restart mode response during current limit, power limit and thermal fault using MODE pin
  • PGOOD indicator output with ±2% accurate adjustable valid load voltage detection threshold (PGTH)
  • Overtemperature protection to safely shutdown in the event of an overcurrent event
  • De-glitched fault reporting for supply brown-out and overvoltage faults
  • Enable and disable control from an MCU using the SHDN pin