UCC27511 Low-Side Gate Driver

Specifications

Product Overview

The UCC27511 is a Texas Instruments single-channel low-side gate driver for Power_Management designs using MOSFET or IGBT gate loads. It uses an asymmetrical output drive structure rated for 4 A peak source current and 8 A peak sink current, with rail-to-rail drive capability for capacitive gate loads.

The device operates from a single 4.5 V to 18 V VDD supply and has typical timing values of 13 ns propagation delay, 9 ns rise time, and 7 ns fall time. Its input logic is TTL and CMOS compatible, with fixed low-voltage logic thresholds independent of VDD and hysteretic thresholds for noise immunity.

UCC27511 includes dual control inputs, IN- and IN+, allowing either the inverting or noninverting input to control the driver output. An unused input can be used as an enable or disable function, while floating inputs and VDD undervoltage lockout hold the output low.

The UCC27511DBV package is a 6-pin SOT-23 with a 2.90 mm x 1.60 mm nominal body. Its split OUTH source and OUTL sink outputs allow separate turn-on and turn-off speed adjustment using external resistors between each output and the power-switch gate.

Key Features

• Single-channel low-side gate driver configuration
• 4 A peak source current for asymmetrical drive
• 8 A peak sink current for asymmetrical drive
• 4.5 V to 18 V single VDD supply range
• 13 ns typical propagation delay
• TTL and CMOS compatible input logic
• Fixed input thresholds independent of VDD
• Dual inverting and noninverting input pins
• Split OUTH source and OUTL sink outputs
• 0.375 Ω pull-down impedance for sink path
• Output held low during UVLO and floating inputs
• 6-pin SOT-23 package with 2.90 mm x 1.60 mm body

Typical Applications

• MOSFET gate driving
• IGBT gate driving
• GaN power device driving
• Low-side power switching
• Capacitive gate load drive
• Fast switching power stages
• Separate turn-on and turn-off control
• Noisy logic input environments

Procurement Notes

When requesting a quote for UCC27511, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.