UCC21520 - 4A/6A, 5.7 kVrms Isolated Dual Channel Gate Driver

The UCC21520 and the UCC21520A areisolated dual-channel gate driver with 4-A source and 6-A sink peak current. It is designed todrive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz with best-in-class propagation delay andpulse-width distortion.

The input side is isolated from the two output drivers by a5.7-kV_RMS 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 V_DC.

Every driver can beconfigured as two low-side drivers, two high-side drivers, or a half-bridge driver withprogrammable dead time (DT). A disable pin shuts down both outputs simultaneously when it is sethigh, and allows normal operation when left open or grounded. As a fail-safe measure, primary-sidelogic failures force both outputs low.

Each device accepts VDDsupply voltages up to 25 V. A wide input VCCI range from 3 V to 18 V makes the driver suitable forinterfacing with both analog and digital controllers. All the supply voltage pins have undervoltage lock-out (UVLO) protection.

With all these advanced features, the UCC21520 and theUCC21520A enable highefficiency, high power density, 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 Maximum Pulse-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 Analog Controllers
• 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-V_PK Reinforced Isolation per DIN V VDE V 0884-11:2017-01
  • 5.7-kV_RMS Isolation for 1 Minute per UL 1577
  • CSA Certification per IEC 60950-1, IEC 62368-1, IEC 61010-1 and IEC 60601-1 End Equipment Standards
  • CQC Certification per GB4943.1-2011

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