Texas Instruments UCC27528DR

Overview

UCC27528DR from Texas Instruments is a dual-channel, non-inverting low-side gate driver IC designed to drive MOSFETs and IGBTs in high-frequency power stages. It delivers 5-A peak source/sink current, features 17-ns typical propagation delay, 1-ns typical inter-channel delay matching, and operates from 4.5-V to 18-V single supply - enabling robust GaN and SiC gate drive in DC-DC converters and motor control.

For engineers reviewing the UCC27528DR datasheet, UCC27528DR pinout, UCC27528DR application, or UCC27528DR equivalent, key selection considerations include enable-controlled dual-channel timing integrity, CMOS-input threshold hysteresis for noise immunity, UVLO behavior ensuring glitch-free startup, and SOIC-8 package compatibility with industrial thermal requirements up to 140°C junction temperature.

Technical Context

The UCC27528DR implements independent ENA/ENB enable inputs with TTL/CMOS-compatible thresholds decoupled from VDD, allowing flexible system-level control without supply dependency. Its CMOS-input logic provides voltage-dependent thresholds (VIN_H ≈ 55% VDD, VIN_L ≈ 38% VDD) and 17% VDD hysteresis, supporting RCD-based input delay tuning and high-noise immunity in switching environments.

Internally, the device uses matched propagation paths to achieve ≤1-ns delay skew between channels, minimizing timing mismatch in synchronous rectifier or paralleled-switch configurations. Outputs are actively held low during VDD UVLO (4.20-V turn-on, 3.90-V turn-off) and when inputs float - critical for safe power-up/down sequencing in SMPS and solar inverters.

Key Specifications

Pinout & Package

UCC27528DR is housed in an industry-standard SOIC-8 (D) package (4.90 mm × 3.91 mm), optimized for thermal performance and PCB layout simplicity in high-density power designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27527DR and LM5113SDX, the UCC27528DR uniquely combines independent enable control, sub-ns delay matching, and floating-input safety in a single SOIC-8 package - making it optimal for high-reliability, multi-phase, and safety-compliant power systems.

Availability

UCC27528DR is available at Aetrix Electronics and suitable for switch-mode power supplies, DC-DC converters, and motor control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and automotive-grade production.

Supply support for UCC27528DR 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 over 90 years of innovation in industrial, automotive, and communications markets.

The UCC27528DR belongs to TI's UCC2752x gate driver product line, engineered specifically for high-speed, low-side driving of wide-bandgap and silicon power devices in demanding power conversion systems.

FAQ

What is the maximum operating junction temperature for the UCC27528DR?

The UCC27528DR is rated for an operating junction temperature range of –40°C to 140°C. This specification is validated across all electrical parameters in the datasheet and supports reliable operation in high-ambient environments such as enclosed motor drives and solar inverters. Thermal derating begins above 125°C ambient depending on PCB copper area and airflow; the SOIC-8 package has a θJA of 128°C/W under standard JEDEC test conditions.

Does the UCC27528DR support negative voltage tolerance on its input pins?

Yes, the UCC27528DR supports –5-V negative voltage handling on INA and INB pins, as specified in the Absolute Maximum Ratings table. This capability allows direct interfacing with legacy controller outputs that may exhibit undershoot during fast edge transitions, without requiring external clamping diodes. The ENA and ENB pins are rated for –0.3 V minimum, so negative excursions there require external protection.

How does the UCC27528DR behave during VDD undervoltage lockout (UVLO)?

During VDD UVLO, the UCC27528DR holds both OUTA and OUTB low regardless of INA, INB, ENA, or ENB states - ensuring glitch-free startup and shutdown. The UVLO rising threshold is 4.20 V (typical), with 300-mV hysteresis, so the outputs remain disabled until VDD exceeds 4.50 V and stay disabled until VDD drops below 3.90 V. This behavior is intrinsic to the internal UVLO circuit and requires no external components.

Can the UCC27528DR drive GaN power devices effectively?

Yes, the UCC27528DR is explicitly designed for emerging wide-bandgap devices including GaN. Its 5-A peak source/sink current, 7-ns rise / 6-ns fall times (with 1.8-nF load), and 17-ns propagation delay enable efficient switching of low-Qg GaN FETs at frequencies exceeding 1 MHz. The 4.5-V minimum VDD also aligns with common GaN driver bias requirements, eliminating level-shifting circuitry in many topologies.

Is the UCC27528DR pin-compatible with the older UCC2732x family?

The UCC27528DR is pin-to-pin compatible with the UCC2732x family *only* when ENA and ENB are left floating or tied high - as stated in TI's documentation. However, the UCC27528DR's dedicated enable pins differ functionally from the UCC2732x's input-only pinout (pins 1 and 8 are inputs, not enables), so direct replacement requires verification of control logic mapping and absence of floating-input risks in legacy designs.