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Product details

Parameters

Number of channels (#) 2 Isolation rating (Vrms) 5700 Power switch IGBT, MOSFET, GaNFET Peak output current (A) 6 DIN V VDE V 0884-10 transient overvoltage rating (Vpk) 8000 DIN V VDE V 0884-10 working voltage (Vpk) 2121 Enable/disable function Enable Output VCC/VDD (Max) (V) 25 Output VCC/VDD (Min) (V) 14.7, 9.2, 6.5 Input VCC (Min) (V) 3 Input VCC (Max) (V) 18 Prop delay (ns) 19 Operating temperature range (C) -40 to 125 open-in-new Find other Isolated gate drivers

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 open-in-new Find other Isolated gate drivers

Features

  • 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, 8-V, 12-V VDD UVLO Options
  • Programmable Overlap and Dead Time
  • Rejects Input Pulses and Noise Transients Shorter than 5 ns
  • Fast Enable for Power Sequencing
  • Wide Body SOIC-16 (DW) Package
  • Safety-Related and Regulatory Approvals:
    • 8000-VPK Isolation per DIN V VDE V 0884-10 (VDE V0884-10):2006-12
    • 5700-VRMS Isolation for 1 Minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 60601-1 End Equipment Standards (Planned)
    • CQC Certification per GB4943.1-2011 (Planned)
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Description

The UCC21521 is an isolated dual-channel gate driver with 4-A source and 6-A sink peak current. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz with best-in-class propagation delay and pulse-width distortion.

The input side is isolated from the two output drivers by a 5.7-kVRMS reinforced isolation barrier, with a minimum of 100-V/ns common-mode transient immunity (CMTI). Internal functional isolation between the two secondary-side drivers allows a working voltage of up to 1500 VDC.

This driver can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver with programmable dead time (DT). The EN pin pulled low shuts down both outputs simultaneously and allows for normal operation when left open or pulled high. As a fail-safe measure, primary-side logic failures force both outputs low.

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

With all these advanced features, the UCC21521 enables high efficiency, high power density, and robustness in a wide variety of power applications.

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Technical documentation

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Type Title Date
* Datasheet UCC21521 4-A, 6-A, 5.7-kVRMS Isolated Dual-Channel Gate Driver with Enable datasheet Jul. 25, 2016
Application notes External Gate Resistor Selection Guide (Rev. A) Feb. 28, 2020
Application notes Understanding Peak IOH and IOL Currents (Rev. A) Feb. 28, 2020
More literature VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. N) Nov. 13, 2019
More literature CSA Product Certificate (Rev. A) Aug. 15, 2019
More literature UL Certification E181974 Vol 4. Sec 7 (Rev. B) Jul. 22, 2019
User guides UCC21520EVM-286, UCC20520EVM- 286, UCC21521CEVM-286, and UCC21530EVM-286 Guide (Rev. B) Nov. 27, 2018
Technical articles How to achieve higher system robustness in DC drives, part 3: minimum input pulse Sep. 19, 2018
Technical articles How to achieve higher system robustness in DC drives, part 2: interlock and deadtime May 30, 2018
Technical articles Boosting efficiency for your solar inverter designs May 24, 2018
Technical articles How to achieve higher system robustness in DC drives, part 1: negative voltage Apr. 17, 2018
More literature CQC Product Certificate Nov. 04, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
29
Description

UCC21520EVM-286 is designed for evaluating UCC21520DW, which is an isolated dual-channel gate driver with 4-A source and 6-A sink peak current capability. This EVM could be served as a reference design for driving power MOSFETS, IGBTS, and SiC MOSFETS with UCC21520 pin function identification (...)

Features
  • Layout example for using UCC21520 to drive MOSFET, IGBT, SiC up to 1200VDC
  • Peripheral components selection reference
  • Each pin is extended out in PCB layout for pin function identification
  • PCB board cutout facilitates high voltage isolation test between primary side and secondary side
  • Maximized creepage (...)
EVALUATION BOARDS Download
document-generic User guide
49
Description

UCC21521CEVM-286 is designed for evaluating UCC21521CDW, which is an isolated dual-channel gate driver with 4-A source and 6-A sink peak current, 12V UVLO and Enable (Active High) Function. This EVM could be served as a reference design for driving power MOSFETS, IGBTS, and SiC MOSFETS with (...)

Features
  • Layout example for using UCC21521C to drive MOSFET, IGBT, SIC up to 1200VPC
  • Peripheral components selection reference
  • Each pin is extended out in PCB layout for pin function identification
  • PCB board cutout facilitates high voltage isolation test between primary side and secondary side
  • Maximized creepage (...)

Design tools & simulation

SIMULATION MODELS Download
SLUM561.ZIP (54 KB) - PSpice Model
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SLUM562.ZIP (3 KB) - PSpice Model
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SLUM567.ZIP (52 KB) - PSpice Model
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SLUM568.ZIP (3 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOLS Download
SLURAZ5.ZIP (609 KB)

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SOIC (DW) 16 View options

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