SLUSG22 October   2025 UCC35131-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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 Insulation Specifications
    6. 6.6 Electrical Characteristics
    7. 6.7 Safety-Related Certifications
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Pre-Production Samples Operating Limits
    3. 7.3 Functional Block Diagram
    4. 7.4 Feature Description
      1. 7.4.1 Power Stage Operation
        1. 7.4.1.1 VDD-COM Voltage Regulation
        2. 7.4.1.2 COM-VEE Voltage Regulation
      2. 7.4.2 Output Voltage Soft Start
      3. 7.4.3 ENA and Power-Good
      4. 7.4.4 Protection Functions
        1. 7.4.4.1 Input Undervoltage Lockout
        2. 7.4.4.2 Input Overvoltage Lockout
        3. 7.4.4.3 Output Undervoltage Protection
        4. 7.4.4.4 Output Overvoltage Protection
        5. 7.4.4.5 Over-Temperature Protection
        6. 7.4.4.6 BSW Pin Faults Protection
    5. 7.5 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 VDD-COM Voltage Regulation
        2. 8.2.2.2 COM-VEE Voltage Regulation and Single Output Configuration
    3. 8.3 System Examples
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

3 Description

The UCC35131-Q1 is an automotive qualified high isolation voltage DC/DC power module designed to provide power to IGBT, SiC, Si and GaN isolated gate drivers and UIR Sensors. Its proprietary integrated transformer, flip-chip package, and advanced control architectures achieve high power density, low noise, and lowest system BOM. This device is capable of delivering 2.0W typical output power at 85oC ambient temperature. The highly accurate dual-output voltages, easily set by resistor dividers, enable low on-resistance, fast and reliable switching for SiC, IGBT and GaN devices. The low-latency feedback control reduces the output capacitance for fast load transient and supports dynamic voltage programming. The wide input voltage and adjustable VIN UVLO supports both wide battery voltage of electric vehicles and regulated input rails. It is operational from 5.5V to 20V VIN, and can withstand VIN overvoltage transient up to 28V.

The integrated protection features, fault-report Power-Good pin, and enable function increase system robustness and save external components. The SOIC package with 8.2mm creepage and clearance distance ensures high isolation capability.

Device Information
ORDERABLE PART NUMBERPACKAGE(1)BODY SIZE (NOM)

PUCC35131

DQDHARQ1		 DHA (SSOP, 16) 5.85mm × 7.50mm
(1) For all available packages, see Section 11.
UCC35131-Q1 Simplified Application Simplified Application