Texas Instruments UCC27282QDQ1

Overview

UCC27282QDQ1 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 time (1.8-nF load), and integrated bootstrap diode. It enables high-efficiency DC/DC conversion in electric power steering and on-board chargers.

For engineers reviewing the UCC27282QDQ1 datasheet, UCC27282QDQ1 pinout, UCC27282QDQ1 application, or UCC27282QDQ1 equivalent, key selection criteria include HS voltage rating (100 V), input interlock functionality, enable/disable control (DRC package), UVLO thresholds (5.0 V on VDD), and delay matching (1-ns typical) for dead-time optimization in synchronous buck topologies.

Technical Context

The UCC27282QDQ1 implements independent TTL/CMOS-compatible inputs with hardware-level input interlock to prevent shoot-through by forcing both outputs low during HI/LI overlap. Its floating high-side driver uses a robust level shifter referenced to the HS node, enabling operation up to 100 V with respect to VSS while maintaining tight 1-ns typical delay matching between HO and LO paths.

Undervoltage lockout operates separately on VDD (5.0-V rising threshold) and HB–HS (3.7-V rising threshold), ensuring safe startup and fault response. The integrated bootstrap diode supports self-biased high-side drive, eliminating external diode requirements in most applications while sustaining 120-V absolute max HB voltage and –14-V absolute max HS negative transients.

Key Specifications

Pinout & Package

UCC27282QDQ1 is available in SON-10 (DRC) package: 3 mm × 3 mm, exposed thermal pad, RoHS-compliant. Pin functions are validated per TI SLUSDN5D Rev D (October 2022).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27289QDQ1 and LM5109BQDGQRQ1, the UCC27282QDQ1 uniquely combines EN control, hardware interlock, integrated bootstrap diode, and 1-ns delay matching in a thermally enhanced 3-mm × 3-mm DRC package-making it optimal for space-constrained, high-efficiency automotive DC/DC and motor drives.

Availability

UCC27282QDQ1 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 ranges and long production lifecycles.

Supply support for UCC27282QDQ1 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 automotive-grade ICs, with over 50 years of power management innovation and AEC-Q100 qualification expertise.

The UCC27282QDQ1 belongs to TI's automotive gate driver product line, engineered specifically for high-reliability, high-efficiency half-bridge control in electrified vehicle subsystems including 48-V architectures and regenerative braking interfaces.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27282QDQ1?

The UCC27282QDQ1 specifies an absolute maximum HS voltage of 100 V DC and –14 V for pulses less than 100 ns. This rating enables use in 48-V automotive systems with margin for inductive transients. Operation beyond these limits risks permanent damage. The device also requires HB–HS voltage to remain ≤16 V, so HB supply must be derated when HS swings negative-e.g., if HS reaches –5 V, HB must stay ≤11 V.

Does the UCC27282QDQ1 require an external bootstrap diode?

No, the UCC27282QDQ1 integrates a bootstrap diode rated for 80-mA forward current and 1.1-V drop at 80 mA. This eliminates the need for an external diode in most designs, reducing component count and PCB area. However, designers must still place an external bootstrap capacitor (typically 0.1 μF) between HB and HS pins, sized according to the high-side MOSFET's gate charge and switching frequency.

How does the input interlock feature work in the UCC27282QDQ1?

The UCC27282QDQ1's input interlock is a hardware logic function that forces both HO and LO outputs low whenever HI and LI inputs are simultaneously high. This prevents shoot-through in the power stage without adding propagation delay or fixed dead-time. The interlock activates instantly-no filtering or timing window-and releases immediately when either input goes low, preserving timing precision critical for high-efficiency operation.

Is the EN pin available on all UCC27282QDQ1 package variants?

No, the EN pin is only present on the SON-10 (DRC) package variant of the UCC27282QDQ1. It is not available on the SOIC-8 (D) or SOIC-8-PP (DDA) packages. In DRC, EN is an active-high enable with 250-kΩ internal pulldown; leaving it floating disables the driver. For noise immunity, TI recommends a 1-nF capacitor from EN to VSS, especially in high-EMI environments like EPS or iBSG systems.

What thermal performance can be expected from the UCC27282QDQ1 in the DRC package?

In the SON-10 DRC package, the UCC27282QDQ1 achieves R_θJB = 21.3°C/W (junction-to-board) and R_θJC(bot) = 4.4°C/W, enabling high-power density designs. With proper PCB copper pour under the exposed thermal pad connected to VSS, the device sustains 150°C junction temperature continuously. This outperforms SOIC-8 variants by >2× in thermal resistance, making DRC ideal for compact, high-current automotive modules.