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Home > Embedded ICs > Embedded - Microcontroller Unit (MCU) > UCC21520DWR
Texas Instruments


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UCC21520DWR Overview

The UCC21520 and the UCC21520A areisolated dual-channel gate drivers with 4-A source and 6-A sinkpeak current. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz withbest-in-class propagation delay and pulse-width distortion.

The input side is isolated from the two output drivers by a5.7-kVRMS reinforced isolation barrier, with a minimum of 100-V/nscommon-mode transient immunity (CMTI). Internal functional isolation between the two secondary-sidedrivers allows a working voltage of up to 1500 VDC.

Every driver can be configured as two low-side drivers, two high-sidedrivers, or a half-bridge driver with programmable dead time (DT). A disable pin shuts down bothoutputs simultaneously when it is set high, and allows normaloperation when left open or grounded. As a fail-safe measure, primary-side logic failures forceboth outputs low.

Each device accepts VDD supply voltages up to 25 V. A wide input VCCI rangefrom 3 V to 18 V makes the driver suitable for interfacing with both analog and digitalcontrollers. All the supply voltage pins have under voltage lock-out(UVLO) protection.

With all these advanced features, the UCC21520 and the UCC21520A enable high efficiency, high powerdensity, and robustness in a wide variety of power applications.


  • Universal: dual low-side, dual high-side or half-bridge driver
  • Operating temperature range –40 to +125°C
  • Switching parameters:
    • 19-ns typical propagation delay
    • 10-ns minimum pulse width
    • 5-ns maximum delay matching
    • 5-ns maximumpulse-width distortion
  • Common-mode transient immunity (CMTI) greater than 100 V/ns
  • Surge Immunity up to 12.8 kV
  • Isolation barrier life >40 Years
  • 4-A peak source, 6-A peak sink output
  • TTL and CMOS compatible inputs
  • 3-V to 18-V input VCCI range to interface with both digital and analogcontrollers
  • Up to 25-V VDD output drive supply
    • 5-V and 8-V VDD UVLO options
  • Programmable overlap and dead time
  • Rejects input pulses and noise transients shorter than 5 ns
  • Fast disable for power sequencing
  • Industry standard wide body SOIC-16 (DW) package
  • Safety-related certifications:
    • 8000-VPK Reinforced Isolation per DIN V VDE V0884-11:2017-01
    • 5.7-kVRMS Isolation for 1 minute per UL 1577
    • CSA Certification per IEC 60950-1, IEC 62368-1, IEC 61010-1 and IEC 60601-1End Equipment Standards
    • CQC certification per GB4943.1-2011

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