Texas Instruments UCC27282QDRQ1

Overview

UCC27282QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive half-bridge gate driver for N-channel MOSFETs in high-side/low-side configuration, featuring ±3-A peak output current, 16-ns typical propagation delay, 12-ns/10-ns (rise/fall) switching times with 1.8-nF load, and integrated bootstrap diode. It enables high-efficiency DC/DC conversion in electric power steering systems.

For engineers reviewing the UCC27282QDRQ1 datasheet, UCC27282QDRQ1 pinout, UCC27282QDRQ1 application, or UCC27282QDRQ1 equivalent, key selection criteria include its 100-V HS voltage rating, input interlock for cross-conduction protection, 5-V UVLO threshold, and DRC package thermal performance for automotive under-hood environments.

Technical Context

The UCC27282QDRQ1 implements independent TTL/CMOS-compatible inputs with hardware-level interlock logic that forces both HO and LO low during input overlap-preventing shoot-through without adding fixed dead time. Its floating high-side driver uses a robust level shifter referenced to HS, enabling operation up to 100 V with respect to VSS while maintaining tight 1-ns typical delay matching between channels.

UVLO is implemented separately on VDD (5.0-V typical rising threshold) and HB–HS (3.7-V typical rising threshold), ensuring safe startup and fault response. The integrated bootstrap diode supports self-biased high-side drive, eliminating external diode requirements in most automotive half-bridge topologies.

Key Specifications

Pinout & Package

UCC27282QDRQ1 is packaged in a 10-pin 3 mm × 3 mm VSON (DRC) with exposed thermal pad, optimized for high-power density and thermal dissipation in automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27282QDRQ1, UCC27289QDRQ1 offers tunable dead time at the expense of EN control, while LM5109BMAX/NOPB sacrifices automotive qualification, current drive, and integration-making UCC27282QDRQ1 the optimal choice for AEC-Q100-compliant, space-constrained, high-efficiency automotive half-bridge systems.

Availability

UCC27282QDRQ1 is available at Aetrix Electronics and suitable for automotive DC/DC converters, electric power steering systems, and on-board chargers requiring stable component supply across extended temperature and long production lifecycles.

Supply support for UCC27282QDRQ1 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 automotive ICs, with decades of expertise in high-reliability power management solutions.

The UCC27282-Q1 belongs to TI's automotive gate driver product line, designed specifically for high-efficiency, high-voltage half-bridge and synchronous buck topologies in safety-critical vehicle electrification systems.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27282QDRQ1?

The UCC27282QDRQ1 specifies an absolute maximum HS voltage of 100 V DC with respect to VSS. Transient pulses <100 ns may reach –14 V to +100 V, but sustained operation above 100 V or below –10 V violates absolute maximum ratings and risks permanent damage. Designers must ensure HS node clamping and layout parasitics remain within these limits during all operating modes including startup, fault, and load dump.

Does the UCC27282QDRQ1 require an external bootstrap diode?

No, the UCC27282QDRQ1 integrates a bootstrap diode with 80-mA forward current capability and 0.88-V typical forward voltage. This eliminates the need for an external diode in most automotive half-bridge applications, reducing component count and PCB footprint. An external diode is only recommended if higher current (>100 mA) or lower VF (<0.7 V) is required for specific high-frequency or high-temperature use cases.

How does the input interlock feature work in the UCC27282QDRQ1?

The UCC27282QDRQ1's input interlock monitors HI and LI simultaneously: if both inputs are high-even momentarily-the internal logic forces HO and LO low immediately, preventing shoot-through. This hardware-level protection adds no propagation delay penalty and requires no external timing components. Once either input goes low, normal operation resumes with standard propagation characteristics.

What is the purpose of the EN pin on the UCC27282QDRQ1, and how should it be used?

The EN pin on the UCC27282QDRQ1 (available in DRC package) provides system-level enable/disable control: pulling EN ≥2.0 V enables the driver; leaving it floating or pulling ≤1.21 V disables it, reducing quiescent current to 7 µA. An internal 250-kΩ pulldown ensures fail-safe disable at power-up. For noise immunity, TI recommends a 1-nF capacitor from EN to VSS and a 10-kΩ pull-up to VDD in 12-V systems.

Can the UCC27282QDRQ1 drive both high-side and low-side N-channel MOSFETs in a synchronous buck converter?

Yes, the UCC27282QDRQ1 is explicitly designed for synchronous buck and half-bridge topologies using two N-channel MOSFETs. Its floating high-side driver supports HS voltages up to 100 V, and the integrated bootstrap diode enables self-biased high-side gate drive. Independent HI/LI inputs allow full control of duty cycle and phase relationship, while interlock logic prevents shoot-through during transitions.