SLVSHI9E March   2025  – April 2026 TPS7H5020-SEP , TPS7H5020-SP , TPS7H5021-SEP , TPS7H5021-SP , TPS7H5030-SEP , TPS7H5030-SP , TPS7H5031-SEP , TPS7H5031-SP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Tables
  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 Quality Conformance Inspection
    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  Input Voltage (VIN) and VLDO
      2. 7.3.2  Driver Input Voltage (PVIN)
      3. 7.3.3  Start-Up
      4. 7.3.4  Enable and Undervoltage Lockout (UVLO)
      5. 7.3.5  Voltage Reference
      6. 7.3.6  Error Amplifier
      7. 7.3.7  Output Voltage Programming
      8. 7.3.8  Soft Start (SS)
      9. 7.3.9  Switching Frequency and External Synchronization
        1. 7.3.9.1 Internal Oscillator Mode
        2. 7.3.9.2 External Synchronization Mode
          1. 7.3.9.2.1 External Synchronization with TPS7H5021 and TPS7H5031
      10. 7.3.10 Duty Cycle Limit
      11. 7.3.11 Minimum On-Time and Off-Time
      12. 7.3.12 Pulse Skipping
      13. 7.3.13 Leading Edge Blank Time
      14. 7.3.14 Current Sense and PWM Generation (CS_ILIM)
      15. 7.3.15 Gate Driver Output
      16. 7.3.16 Unpowered Voltage Clamp
      17. 7.3.17 Sourcing Driver Return (OUTH_REF)
      18. 7.3.18 Slope Compensation (RSC)
      19. 7.3.19 Frequency Compensation
      20. 7.3.20 Thermal Shutdown
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1  Switching Frequency
        2. 8.2.2.2  Output Voltage Programming Resistor Selection
        3. 8.2.2.3  Driver PVIN Configuration
        4. 8.2.2.4  Soft-Start Capacitor Selection
        5. 8.2.2.5  Transformer Design
        6. 8.2.2.6  Primary Power Switch Selection
        7. 8.2.2.7  Output Diode Selection
        8. 8.2.2.8  RCD Clamp
        9. 8.2.2.9  Output Capacitance Selection
        10. 8.2.2.10 Current Sense Resistor
        11. 8.2.2.11 Frequency Compensation Component Selection
      3. 8.2.3 Application Curves
      4. 8.2.4 Boost Converter
      5. 8.2.5 Feedback Isolation Using ISOS510
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.1 Overview

The TPS7H502x and TPS7H503x are radiation-hardened current mode, single-ended PWM controllers that contain integrated gate drivers. The TPS7H502x device is capable of operation up to 1MHz in all modes, while the TPS7H503x is operational up to 500kHz. These controllers are intended for use in space-grade power controller designs and can support topologies such as the flyback, forward, and the boost. The TPS7H5020 and TPS7H5030 have a nominal maximum duty cycle of 100%, while the TPS7H5021 and TPS7H503x have a nominal 50% duty cycle limit.

The controllers also feature a 0.6V ±1% voltage reference to enable high accuracy converter designs. Features such as soft-start, enable, and adjustable slope-compensation are included in the controller, simplifying the overall converter design and minimizing the external components needed. The converters also can be synchronized to an external clock through the SYNC pin. The external clock synchronization range is from 100kHz to 1MHz for the TPS7H502x, which is the same as the frequency range in internal oscillator mode. The TPS7H503x external clock synchronization range is from 100kHz to 500kHz.

The controllers offer separate voltage inputs for the controller voltage and driver stage though the VIN and PVIN pins, respectively. The voltage range for both of these inputs is from 4.5V to 14V for the TPS7H502x, and offers the user a great deal of flexibility. The TPS7H503x input voltage range is from 8V to 14V. The integrated drivers can be used with silicon FETs (typical 12V gate voltage), while the TPS7H502x can also be used with GaN power semiconductor devices (typical 5V gate voltage). When driving GaN devices with the TPS7H502x, the VLDO regulator output can be tied directly to PVIN or a separate supply can be utilized at PVIN if the user desires. The TPS7H502x VLDO output is programmable from 4.5V to 5.5V.