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UCC21551

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4A/6A 5kVRMS dual-channel isolated gate driver with EN and DT pins for IGBT and SiC

Product details

Number of channels 2 Withstand isolation voltage (VISO) (Vrms) 5000 Power switch IGBT, MOSFET, SiCFET Peak output current (A) 6 Features Programmable dead time Output VCC/VDD (max) (V) 25 Output VCC/VDD (min) (V) 13 Input supply voltage (min) (V) 3 Input supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Propagation delay time (µs) 0.028 Input threshold CMOS Operating temperature range (°C) -40 to 150 Rating Catalog Rise time (ns) 8 Fall time (ns) 8 Undervoltage lockout (typ) (V) 5, 8, 12
Number of channels 2 Withstand isolation voltage (VISO) (Vrms) 5000 Power switch IGBT, MOSFET, SiCFET Peak output current (A) 6 Features Programmable dead time Output VCC/VDD (max) (V) 25 Output VCC/VDD (min) (V) 13 Input supply voltage (min) (V) 3 Input supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Propagation delay time (µs) 0.028 Input threshold CMOS Operating temperature range (°C) -40 to 150 Rating Catalog Rise time (ns) 8 Fall time (ns) 8 Undervoltage lockout (typ) (V) 5, 8, 12
SOIC (DWK) 14 106.09 mm² 10.3 x 10.3
  • Universal: dual low-side, dual high-side or half-bridge driver
  • Junction temperature range –40 to +150°C
  • Up to 4-A peak source and 6-A peak sink output
  • Common-mode transient immunity (CMTI) greater than 125 V/ns
  • Up to 25-V VDD output drive supply
    • 12-V and 17-V VDD UVLO options
  • Switching parameters:
    • 33-ns typical propagation delay
    • 5-ns maximum delay matching
    • 6-ns maximum pulse-width distortion
    • 10-µs maximum VDD power-up delay
  • UVLO protection for all power supplies
  • Fast enable for power sequencing
  • Universal: dual low-side, dual high-side or half-bridge driver
  • Junction temperature range –40 to +150°C
  • Up to 4-A peak source and 6-A peak sink output
  • Common-mode transient immunity (CMTI) greater than 125 V/ns
  • Up to 25-V VDD output drive supply
    • 12-V and 17-V VDD UVLO options
  • Switching parameters:
    • 33-ns typical propagation delay
    • 5-ns maximum delay matching
    • 6-ns maximum pulse-width distortion
    • 10-µs maximum VDD power-up delay
  • UVLO protection for all power supplies
  • Fast enable for power sequencing

The UCC21551x is an isolated dual channel gate driver family with programmable dead time and wide temperature range. It is designed with 4-A peak-source and 6-A peak-sink current to drive power MOSFET, SiC, and IGBT transistors.

The UCC21551x can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver. The input side is isolated from the two output drivers by a 5-kVRMS isolation barrier, with a minimum of 125-V/ns common-mode transient immunity (CMTI).

Protection features include: resistor programmable dead time, disable feature to shut down both outputs simultaneously, and integrated de-glitch filter that rejects input transients shorter than 5 ns. All supplies have UVLO protection.

With all these advanced features, the UCC21551x device enables high efficiency, high power density, and robustness in a wide variety of power applications.

The UCC21551x is an isolated dual channel gate driver family with programmable dead time and wide temperature range. It is designed with 4-A peak-source and 6-A peak-sink current to drive power MOSFET, SiC, and IGBT transistors.

The UCC21551x can be configured as two low-side drivers, two high-side drivers, or a half-bridge driver. The input side is isolated from the two output drivers by a 5-kVRMS isolation barrier, with a minimum of 125-V/ns common-mode transient immunity (CMTI).

Protection features include: resistor programmable dead time, disable feature to shut down both outputs simultaneously, and integrated de-glitch filter that rejects input transients shorter than 5 ns. All supplies have UVLO protection.

With all these advanced features, the UCC21551x device 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
* Data sheet UCC21551x 4-A, 6-A, Reinforced Isolation Dual-Channel Gate Driver datasheet (Rev. B) PDF | HTML 08 Jan 2024
Application note Review of Different Power Factor Correction (PFC) Topologies' Gate Driver Needs PDF | HTML 22 Jan 2024
Certificate UCC21551CQEVM-079 EU RoHS Declaration of Conformity (DoC) 06 Apr 2023

Design & development

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Evaluation board

UCC21551CQEVM-079 — UCC21551 evaluation module for 4-A, 6-A dual-channel isolated gate driver

The UCC21551CQEVM has a two-layer copper PCB containing multiple test points and jumpers in order to fully evaluate the functionality of the UCC21551. The EVM features PWM input control, onboard adjustable power supply, sockets for discrete FETs, external active clamp for low-side protection, (...)

User guide: PDF | HTML
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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 (...)
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SOIC (DWK) 14 View options

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