Texas Instruments UCC27322QDRQ1

Overview

UCC27322QDRQ1 from Texas Instruments is a single-channel, noninverting, automotive-grade low-side MOSFET driver delivering ±9 A peak output current at the Miller plateau region, with 20-ns rise and 15-ns fall times (10-nF load), 4.5–15-V supply range, and integrated enable function-designed for high-frequency synchronous rectification in DC-DC converters.

For engineers reviewing the UCC27322QDRQ1 datasheet, UCC27322QDRQ1 pinout, UCC27322QDRQ1 application, or UCC27322QDRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), TrueDrive™ bipolar-CMOS hybrid output architecture, industry-standard SOIC-8 pinout with ENBL on pin 3, and thermal performance in MSOP-PowerPAD packaging.

Technical Context

The UCC27322QDRQ1 implements a noninverting logic path with TTL/CMOS-compatible inputs independent of VDD, and an enable input (ENBL) internally pulled up to VDD for active-high operation. Its output stage uses parallel bipolar and MOSFET transistors (TrueDrive™) to deliver high-current pulses precisely during the Miller plateau, minimizing switching losses in fast-switching power stages.

This driver operates with separated AGND and PGND pins to suppress ground bounce and ringing induced by high di/dt switching currents. The PowerPAD-enhanced MSOP package provides R_θJA = 58.6°C/W, enabling stable operation under high ambient temperatures typical in automotive powertrain and ADAS subsystems.

Key Specifications

Pinout & Package

UCC27322QDRQ1 is packaged in an 8-pin SOIC (D) body measuring 6.00 mm × 4.90 mm, with exposed PowerPAD thermal pad only in the DGN variant-not applicable to this SOIC-8 orderable part. Pin functions are validated per TI SLUSA13E datasheet Figure 6-1 and Table 6-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-side MOSFET driver applications.

Compared with UCC27321QDRQ1, the UCC27322QDRQ1 eliminates logic inversion overhead in standard PWM architectures; compared with TPS2829Q1DBVRQ1, it delivers 4.5× higher peak current and includes ENBL for system-level fault management-making it the optimal choice for demanding automotive power conversion.

Availability

UCC27322QDRQ1 is available at Aetrix Electronics and suitable for automotive DC-DC converters, synchronous buck regulators, and Class-D audio amplifiers requiring stable component supply across extended temperature and long product lifecycles.

Supply support for UCC27322QDRQ1 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 ICs, with decades of expertise in high-reliability power management solutions.

The UCC2732x-Q1 family was designed specifically for automotive-grade, high-speed MOSFET gate driving in powertrain, chassis, and ADAS systems-emphasizing robustness, thermal efficiency, and AEC-Q100 compliance from silicon to package.

FAQ

What is the logic configuration of the UCC27322QDRQ1?

The UCC27322QDRQ1 is a noninverting low-side MOSFET driver: when the IN pin is high, the OUT pin goes high; when IN is low, OUT goes low. This matches standard PWM controller outputs driving N-channel synchronous rectifiers. Its counterpart, UCC27321QDRQ1, provides inverting logic. Both share identical electrical specs, pinout, and thermal characteristics.

Does the UCC27322QDRQ1 require external pull-up or pull-down resistors on the ENBL pin?

No-UCC27322QDRQ1 features an internal pull-up resistor on the ENBL pin tied to VDD, enabling active-high operation by default. Leaving ENBL unconnected results in normal driver operation. An external pulldown is only needed if active-low enable logic is required, and must respect the 1.5–2.7-V rising threshold and hysteresis specification.

Can the UCC27322QDRQ1 drive GaN FETs effectively?

Yes-the UCC27322QDRQ1's ±9-A peak current, 20-ns rise time, and low output impedance make it suitable for driving enhancement-mode GaN FETs in high-frequency totem-pole PFC and LLC resonant converters. However, layout must minimize parasitic inductance, and gate resistance should be tuned to limit dV/dt per GaN manufacturer recommendations.

What is the maximum recommended operating frequency for the UCC27322QDRQ1?

While the UCC27322QDRQ1 has no hard frequency limit, its 20-ns rise and 15-ns fall times support reliable operation up to 10 MHz in optimized layouts with low-capacitance gates. Real-world maximum frequency depends on MOSFET gate charge (Q_g): for example, with Q_g = 50 nC, average output current I_OUT = Q_g × f limits practical use to ~4 MHz at 200-mA average current-well within the device's capability.

How does the UCC27322QDRQ1 handle shoot-through prevention?

The UCC27322QDRQ1 itself does not integrate shoot-through protection logic-but its fast, well-controlled switching (35-ns max propagation delay, low output impedance) enables precise external dead-time control. When paired with a controller that manages complementary PWM signals, the UCC27322QDRQ1's consistent timing minimizes overlap risk. Its separated AGND/PGND pins further reduce ground-bounce-induced timing errors.