Texas Instruments UCC27712QDRQ1

Overview

UCC27712QDRQ1 from Texas Instruments is an AEC-Q100 qualified automotive dual-channel high-side/low-side gate driver IC for IGBTs and power MOSFETs in bridge topologies. It delivers 1.8-A source / 2.8-A sink peak output current, features 100-ns typical propagation delay with ≤12-ns channel-to-channel delay matching, and operates up to 620-V HS voltage with 50 V/ns dv/dt immunity - enabling robust motor drive and on-board charger inverters.

For engineers reviewing the UCC27712QDRQ1 datasheet, UCC27712QDRQ1 pinout, UCC27712QDRQ1 application, or UCC27712QDRQ1 equivalent, key selection criteria include interlocked dual-input timing control, bootstrap-compatible floating high-side operation, UVLO protection on both VDD and HB–HS rails, and SOIC-8 packaging validated for –40°C to +125°C automotive environments.

Technical Context

The UCC27712QDRQ1 integrates independent ground-referenced (LO) and floating (HO) channels controlled by dedicated TTL/CMOS-compatible HI and LI inputs, with internal interlock logic enforcing ≥100-ns deadtime to prevent shoot-through. Its level-shifting architecture supports bootstrap or isolated biasing of the high-side channel, with logic operation functional down to –11 V on HS and –5 V on inputs.

Protection architecture includes dual UVLO circuits - one on VDD–COM (turn-on threshold 8.9 V, hysteresis 0.5 V) and one on HB–HS (turn-on threshold 8.2 V, hysteresis 0.5 V) - plus input deglitch filtering, negative transient safe operating area (NTSOA) on HS, and automatic low-state hold during floating or sub-pulse-width inputs.

Key Specifications

Pinout & Package

UCC27712QDRQ1 is housed in an industry-standard SOIC-8 package (3.91 mm × 8.65 mm body size) with creepage and clearance compliant with automotive isolation requirements. Pin 1 (LI) is marked by a dot or beveled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27712QDRQ1, UCC27714QDRQ1 offers higher drive strength for demanding gate loads but shares identical protection and timing features, while IRS21844SPBF provides basic dual-channel functionality at lower cost but omits automotive-grade protections and interlock logic.

Availability

UCC27712QDRQ1 is available at Aetrix Electronics and suitable for automotive traction inverters, on-board chargers (PFC and phase-shifted full-bridge), and motor drives for HVAC and steering assist requiring stable component supply across extended temperature and lifecycle demands.

Supply support for UCC27712QDRQ1 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 electronics, with decades of expertise in high-voltage power management ICs.

The UCC27712QDRQ1 belongs to TI's automotive-grade gate driver product line, engineered specifically for high-reliability, high-efficiency motor control and power conversion in electric vehicles and charging infrastructure.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27712QDRQ1?

The UCC27712QDRQ1 supports HS pin voltages from –11 V to +600 V DC, with transient capability up to +700 V for <100 ns. This rating enables direct use in 400-V and 800-V battery systems when paired with appropriate external clamping, and is validated across the full –40°C to +125°C operating range. The device's NTSOA protection ensures safe operation during negative transients common in automotive load-dump events.

Does the UCC27712QDRQ1 require external bootstrap diodes or capacitors?

Yes, the UCC27712QDRQ1 requires an external bootstrap diode and capacitor on the HB–HS path. A fast-recovery diode (e.g., 1N4148W or automotive-grade equivalent) and a capacitor ≥10× the total gate capacitance of the driven high-side switch (typically 100 nF to 1 µF) are mandatory. The capacitor must be placed close to pins 6 (HS) and 8 (HB) to minimize loop inductance and ensure stable high-side bias during 100% duty cycle operation.

How does the interlock function work in the UCC27712QDRQ1?

The UCC27712QDRQ1 implements hardware-based interlock logic that enforces a minimum 100-ns deadtime between HO and LO transitions whenever HI and LI inputs are complementary. If both inputs go high simultaneously, both outputs are forced low. This prevents shoot-through without relying on controller-level timing margins, making it ideal for systems with variable PWM frequency or jitter-prone digital controllers.

Can the UCC27712QDRQ1 drive both IGBTs and MOSFETs?

Yes, the UCC27712QDRQ1 is designed to drive both IGBTs and power MOSFETs. Its recommended VDD range is 10–20 V for IGBTs and 10–17 V for MOSFETs, and its 2.8-A sink / 1.8-A source capability supports gate charges up to ~35 nC. The device's high dv/dt immunity and wide input voltage range simplify interface with diverse controller families used in hybrid and all-electric vehicle power stages.

Is the UCC27712QDRQ1 pin-compatible with other TI gate drivers?

No, the UCC27712QDRQ1 is not pin-compatible with earlier TI dual-channel drivers such as the UCC27201 or UCC27211. Its unique pin assignment - including dedicated HS (Pin 6) and HB (Pin 8) terminals - reflects its optimized bootstrap architecture and interlock logic. Migration requires PCB layout revision and validation of timing, biasing, and protection behavior in the target application.