Texas Instruments UCC21551/UCC21551-Q1 Isolated Gate Driver

Texas Instruments UCC21551/UCC21551-Q1 Dual-Channel Isolated Gate Driver is designed with 4A peak-source and 6A peak-sink current to drive power MOSFET, SiC, and IGBT transistors. This isolated gate driver can be configured as two low-side, two high-side, or a half-bridge driver. The input side is separated from the two output drivers by a 5kV_RMS isolation barrier, with a minimum of 125V/ns Common-Mode Transient Immunity (CMTI). The UCC21551/UCC21551-Q1 isolated gate driver enables high efficiency, high power density, and robustness in a wide variety of power applications. Typical applications include isolated converters in AC-DC and DC-DC, motor drives, inverters, and Uninterruptible Power Supplies (UPS). The UCC21551-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

Can be configured as a dual low-side, a dual high-side, or a half-bridge driver
–40°C to 150°C junction temperature range
Up to 4A peak source and 6A peak sink output
Common-Mode Transient Immunity (CMTI) greater than 125V/ns
Up to 25V V_DD output drive supply
- 12V and 17V V_DD UVLO options

Switching parameters
- 33ns typical propagation delay
- 5ns maximum delay matching
- 6ns maximum pulse-width distortion
- 10µs maximum VDD power-up delay
UVLO protection for all power supplies
Fast enable for power sequencing

Applications

Motor drive and inverters
Uninterruptible Power Supply (UPS)
Isolated converters in AC-DC and DC-DC

Texas Instruments UCC21551/UCC21551-Q1 Isolated Gate Driver

Features

Applications

Functional Block Diagram

Typical Application Schematic

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