SLUSCO1 June 2017 UCC27212


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Switching Characteristics
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Input Stages
      2. 7.3.2Undervoltage Lockout (UVLO)
      3. 7.3.3Level Shift
      4. 7.3.4Boot Diode
      5. 7.3.5Output Stages
    4. 7.4Device Functional Modes
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. Dissipation
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
      1. 10.2.1Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1Documentation Support
      1. 11.1.1Related Documentation
    2. 11.2Receiving Notification of Documentation Updates
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information


  • 5-V Turn-off Under Voltage Lockout (UVLO)
  • Drives Two N-Channel MOSFETs in High-Side and Low-Side Configuration With Independent Inputs
  • Maximum Boot Voltage 120-V DC
  • 4-A Sink, 4-A Source Output Currents
  • 0.9-Ω Pullup and Pulldown Resistance
  • Input Pins Can Tolerate –10 V to +20 V and are Independent of Supply Voltage Range
  • TTL Compatible Inputs
  • 5-V to 17-V VDD Operating Range, (20-V ABS Maximum)
  • 7.2-ns Rise and 5.5-ns Fall Time With 1000-pF Load
  • Fast Propagation Delay Times (20-ns typical)
  • 4-ns Typical Delay Matching
  • Available in the WSON-10 package
  • Package for High-Density Applications
  • Specified from –40 to +140°C


  • Power Supplies for Telecom, Datacom, and Merchant
  • Half-Bridge and Full-Bridge Converters
  • High-Voltage Synchronous-Buck Converters
  • Two-Switch Forward Converters
  • Push-Pull and Active-Clamp Forward Converters
  • Class-D Audio Amplifiers


The UCC27212 device driver is based on the popular UCC27211 MOSFET drivers. In addition, UCC27212 offers extended operating range all the way down to 5 V which helps lower power losses.

The peak output pullup and pulldown current is 4-A source and 4-A sink, and pullup and pulldown resistance is 0.9 Ω. This allows for the ability to drive large power MOSFETs with minimized switching losses during the transition through the Miller Plateau of the MOSFET.

The input structure can directly handle –10 V, which increases robustness and also allows direct interface to gate-drive transformers without using rectification diodes. The inputs are also independent of supply voltage and have a 20-V maximum rating.

The switching node of the UCC27212 (HS pin) can handle –18-V maximum, which allows the high-side channel to be protected from inherent negative voltages caused by parasitic inductance and stray capacitance. The UCC27212 has increased hysteresis that allows for interface to analog or digital PWM controllers with enhanced noise immunity.

The low-side and high-side gate drivers are independently controlled and matched to 4 ns between the turn on and turn off of each other.

An on-chip 100-V rated bootstrap diode eliminates the external discrete diodes. Undervoltage lockout is provided for both the high-side and the low-side drivers which provides symmetric turn on and turn off behavior and forces the outputs low if the drive voltage is below the specified threshold.

Device Information(1)

UCC27212WSON (10)4.0 mm x 4.0 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Diagram

UCC27212 alt_slusco1.gif

Propagation Delays vs Supply Voltage T = 25°C

UCC27212 D001_SLUSCO1.gif