Texas Instruments UCC27211ADRMR

Overview

UCC27211ADRMR from Texas Instruments is a high-voltage, dual-channel, independent-input half-bridge gate driver IC designed to control N-channel MOSFETs in high-side/low-side configurations. It delivers 3.7A source / 4.5A sink peak output current, supports 120V maximum boot voltage, operates from 8V–17V VDD, and features 7.2ns rise / 5.5ns fall time (1000pF load) - enabling efficient switching in solar microinverters and telecom power supplies.

For engineers reviewing the UCC27211ADRMR datasheet, UCC27211ADRMR pinout, UCC27211ADRMR application, or UCC27211ADRMR equivalent, this page provides verified technical context, real-world timing behavior, UVLO symmetry details, bootstrap diode integration, and validated alternative options for high-reliability bridge driver selection.

Technical Context

The UCC27211ADRMR integrates an on-chip 120V-rated bootstrap diode and level-shift circuitry to enable floating high-side drive referenced to the HS node. Its independent TTL-compatible inputs (HI/LI) tolerate –10V to +20V and exhibit 0.7V hysteresis, ensuring noise immunity when interfacing with PWM controllers or gate-drive transformers.

It implements symmetrical undervoltage lockout (UVLO) with 7.0V (±0.5V hysteresis) on VDD and 6.7V (±1.1V hysteresis) on VHB–VHS, forcing both outputs low during under-bias conditions. Delay matching between HO and LO channels is 4ns typical across –40°C to +150°C, critical for minimizing transformer volt-second imbalance in bridge topologies.

Key Specifications

Pinout & Package

UCC27211ADRMR is housed in an 8-pin VSON package (DRM), measuring 4.0mm × 4.0mm with exposed thermal pad electrically tied to VSS. The package supports high-density PCB layouts and enhanced thermal dissipation via direct connection of the thermal pad to ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with UCC27201D and IRS2004PBF, the UCC27211ADRMR delivers superior drive strength, eliminates external diode BOM, supports higher voltage stress margins, and offers better thermal performance in compact VSON packaging - making it optimal for next-generation high-frequency, high-density power converters.

Availability

UCC27211ADRMR is available at Aetrix Electronics and suitable for solar microinverters, telecom rectifiers, online UPS systems, and battery test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for UCC27211ADRMR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader focused on analog, embedded processing, and power management technologies, serving industrial, automotive, and communications markets with high-reliability components.

The UCC27211ADRMR belongs to TI's high-performance gate driver product line, engineered specifically for high-voltage, high-frequency half-bridge and synchronous-buck applications demanding robust isolation, fast switching, and thermal resilience.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27211ADRMR?

The UCC27211ADRMR HS pin supports a DC voltage range of –1V to +115V, with transient capability up to –(24–VDD) V for pulses under 100ns. This rating enables reliable operation in topologies with significant parasitic ringing, such as hard-switched LLC or active-clamp forward converters where the UCC27211ADRMR is commonly deployed.

Does the UCC27211ADRMR include an integrated bootstrap diode?

Yes, the UCC27211ADRMR integrates a 120V-rated bootstrap diode between VDD and HB pins. This eliminates the need for an external diode, reduces PCB area, improves reliability, and simplifies design - a key differentiator versus alternatives like UCC27201D or IRS2004PBF that require discrete bootstrap diodes.

What is the purpose of the 0.7V input hysteresis in the UCC27211ADRMR?

The 0.7V hysteresis on HI and LI inputs enhances noise immunity by preventing false triggering during voltage transients or EMI events. It ensures clean logic transitions even when interfacing with noisy PWM sources or gate-drive transformers - a critical feature for stable operation in high-dV/dt environments where the UCC27211ADRMR is routinely applied.

Can the UCC27211ADRMR drive GaN HEMTs effectively?

Yes, the UCC27211ADRMR supports GaN HEMT drive requirements with its 20ns propagation delay, 7.2ns rise time, and 3.7A/4.5A peak current - sufficient for sub-10nC gate charge devices. Its 8V–17V VDD range aligns with common GaN gate bias needs, and the –10V input tolerance accommodates transformer-coupled gate signals used in high-isolation GaN systems.

How does the symmetrical UVLO function benefit system reliability in the UCC27211ADRMR?

Symmetrical UVLO ensures both high-side and low-side drivers disable simultaneously when either VDD or VHB–VHS falls below threshold. This prevents shoot-through in bridge configurations during brownout or bootstrap capacitor discharge - a failure mode that could destroy power MOSFETs. The UCC27211ADRMR's matched 7.0V (VDD) and 6.7V (VHB–VHS) thresholds enforce safe, coordinated shutdown.