Product details

Number of channels (#) 2 Isolation rating (Vrms) 5700 Power switch GaNFET, IGBT, MOSFET 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 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 Undervoltage lockout (Typ) 5, 8, 12
Number of channels (#) 2 Isolation rating (Vrms) 5700 Power switch GaNFET, IGBT, MOSFET 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 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 Undervoltage lockout (Typ) 5, 8, 12
SOIC (DW) 16 77 mm² 10.3 x 7.5
  • 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
    • 6-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 certifications:
    • 8000-VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5700-VRMS 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
  • 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
    • 6-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 certifications:
    • 8000-VPK reinforced isolation per DIN V VDE V 0884-11:2017-01
    • 5700-VRMS 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

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.

Every 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.

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.

Every 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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Design & development

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

Evaluation board

UCC21520EVM-286 — UCC21520 4A/6A isolated dual-channel gate driver evaluation module

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, (...)

Evaluation board

UCC21521CEVM-286 — UCC21521C 4A/6A Isolated Dual-Channel Gate Driver Evaluation Module

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 (...)

Simulation model

UCC21521A PSpice Transient Model

SLUM561.ZIP (54 KB) - PSpice Model
Simulation model

UCC21521A Unencrypted PSpice Transient Model

SLUM562.ZIP (3 KB) - PSpice Model
Simulation model

UCC21521 Unencrypted PSpice Transient Model

SLUM565.ZIP (3 KB) - PSpice Model
Simulation model

UCC21521 PSpice Transient Model

SLUM566.ZIP (139 KB) - PSpice Model
Simulation model

UCC21521C PSpice Transient Model

SLUM567.ZIP (52 KB) - PSpice Model
Simulation model

UCC21521C Unencrypted PSpice Transient Model

SLUM568.ZIP (3 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Calculation tool

UCC21520 Bootstrap Calculator 1.0

SLURAZ5.ZIP (609 KB)
Package Pins Download
SOIC (DW) 16 View options

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