Texas Instruments UCC27282DRMR

Overview

UCC27282DRMR from Texas Instruments is a 3-A, 120-V half-bridge gate driver IC for N-channel MOSFETs in high-side/low-side configurations, featuring 16-ns typical propagation delay, ±3-A peak output current, integrated bootstrap diode, and input interlock for cross-conduction protection-used in telecom power supplies and motor drives.

For engineers reviewing the UCC27282DRMR datasheet, UCC27282DRMR pinout, UCC27282DRMR application, or UCC27282DRMR equivalent, key selection considerations include HS voltage rating (100 V), UVLO thresholds (5.0 V on VDD, 3.7 V on HB–HS), delay matching (1 ns typ), thermal performance (R_θJA = 47.3°C/W in DRC package), and enable/disable functionality specific to the DRC variant.

Technical Context

The UCC27282DRMR implements independent TTL/CMOS-compatible HI/LI inputs with internal pull-down resistors (250 kΩ) and input interlock logic that forces both HO and LO low during simultaneous high input states-preventing shoot-through without adding fixed dead time. Its robust level shifter enables fast, low-jitter high-side switching referenced to the HS node up to 100 V.

UVLO is implemented separately on VDD (4.5–5.4 V threshold) and HB–HS (3.3–4.4 V threshold), ensuring safe startup and fault response. The integrated bootstrap diode (V_F = 0.85 V typ at 80 mA, R_D = 2.5 Ω max) supports efficient high-side gate charging while reducing BOM count and PCB area.

Key Specifications

Pinout & Package

UCC27282DRMR is packaged in a 10-pin VSON (DRC) with exposed thermal pad (3 mm × 3 mm), optimized for high-density power designs and thermal dissipation (R_θJA = 47.3°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27282DRMR, UCC27289DRMR offers dead-time adjustability at the cost of losing enable functionality, while IRS2007MTRPBF trades integration and precision for higher voltage tolerance-making UCC27282DRMR optimal for compact, thermally constrained 100-V half-bridge designs requiring system-level power management.

Availability

UCC27282DRMR is available at Aetrix Electronics and suitable for telecom power supplies, motor drives, Class-D audio amplifiers, and high-voltage synchronous buck converters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for UCC27282DRMR 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power conversion solutions.

The UCC27282DRMR belongs to TI's high-performance gate driver product line, designed specifically for high-efficiency, high-frequency half-bridge and synchronous-buck power stages in industrial, telecom, and consumer applications.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27282DRMR?

The UCC27282DRMR specifies an absolute maximum HS voltage of 100 V DC and –14 V for pulses under 100 ns. This 100-V rating enables use in 48-V and 60-V bus systems with margin for transient overshoot. Operation beyond this limit risks permanent damage. The device is not rated for 120-V continuous HS operation-the "120-V" in marketing refers to bootstrap voltage capability (V_HB ≤ 120 V), not HS node rating.

Does the UCC27282DRMR include an integrated bootstrap diode, and how does it affect design?

Yes, the UCC27282DRMR integrates a bootstrap diode with 0.85-V typical forward voltage at 80 mA and 2.5-Ω dynamic resistance. This eliminates the need for an external Schottky diode, reducing component count, PCB area, and parasitic inductance in the bootstrap loop-improving reliability and simplifying layout. Designers must still place an external bootstrap capacitor (typically 0.1 µF) between HB and HS pins.

How does the input interlock feature work in the UCC27282DRMR, and when is it active?

The input interlock in the UCC27282DRMR forces both HO and LO low whenever HI and LI are simultaneously high-preventing shoot-through without adding fixed dead time. It activates instantly upon overlapping inputs and releases immediately when either input goes low. This logic operates independently of EN status and UVLO conditions, providing hardware-level protection even during fault events or controller glitches.

What is the purpose of the EN pin on the UCC27282DRMR, and is it available on all packages?

The EN pin on the UCC27282DRMR provides active-high enable control: pulling it above 2.0 V enables both outputs, while leaving it floating or pulling it low disables them and reduces supply current to 7 µA. This pin is exclusive to the DRC (10-pin VSON) package-SOIC-8 and SON-8 variants do not include EN. For non-DRC packages, enable functionality must be implemented externally using input gating.

What thermal performance can be expected from the UCC27282DRMR in its DRC package?

In the DRC (10-pin VSON, 3 mm × 3 mm) package, the UCC27282DRMR achieves R_θJA = 47.3°C/W with proper PCB layout (2-layer board, 1-in² copper pour on top/bottom layers, thermal pad soldered to inner ground plane). Junction-to-board (R_θJB) is 21.3°C/W, confirming strong thermal coupling to the PCB. These values support continuous 3-A peak output operation at +125°C ambient when mounted on a 4-layer board with dedicated thermal vias.