Texas Instruments UCC27714DR

Overview

UCC27714DR from Texas Instruments is a high-speed, 600-V high-side/low-side gate driver IC with independent TTL/CMOS-compatible inputs, 4-A peak source/sink output current at VDD = 15 V, 125-ns maximum propagation delay, and robust –8-V HS pin transient tolerance. It drives power MOSFETs or IGBTs in half-bridge configurations for offline AC/DC power supplies.

For engineers reviewing the UCC27714DR datasheet, UCC27714DR pinout, UCC27714DR application, or UCC27714DR equivalent, key selection criteria include bootstrap-capable floating high-side channel, dual UVLO protection (VDD and HB–HS), rail-to-rail drive, and ±20-ns maximum delay matching between HO and LO outputs under –40°C to 125°C operation.

Technical Context

The UCC27714DR integrates two independent gate-drive channels: a ground-referenced low-side (LO) and a floating high-side (HO) designed for bootstrap operation with HB–HS bias up to 17 V. Its logic inputs (HI/LI) directly control each output without internal cross-coupling, enabling full PWM flexibility including 100% duty cycle support when HB–HS remains above UVLO threshold.

It features separated logic ground (VSS) and driver ground (COM), sustaining voltage differences up to ±6 V, and includes integrated pull-down resistors (400 kΩ on HI/LI, 200 kΩ on EN) plus input hysteresis (0.7 V) for noise immunity. The device maintains functional logic at HS pin voltages from –8 V to 600 V (at VDD = 12 V) and exhibits high dv/dt immunity on HS pin.

Key Specifications

Pinout & Package

UCC27714DR is housed in a 14-pin SOIC package (3.91 mm × 8.65 mm body size) with creepage-optimized pin spacing for high-voltage isolation. Pin 1 is HI; pins 8, 9, 10, and 14 are NC; COM (pin 5) serves as low-side return; HS (pin 11) is high-side source reference; HB (pin 13) is bootstrap supply input.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRS2004STRPBF and LM5109BMAX/NOPB, the UCC27714DR delivers superior timing accuracy (20-ns delay matching vs. >50 ns), higher drive capability (±4 A vs. ≤2.5 A), and dual independent UVLO protection-critical for reliable operation in high-density, high-reliability industrial power systems.

Availability

UCC27714DR is available at Aetrix Electronics and suitable for server PSUs, solar inverters, industrial UPS systems, and telecom rectifiers requiring stable component supply and long-term production continuity.

Supply support for UCC27714DR 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 and automotive electronics.

The UCC27714DR belongs to TI's high-voltage gate driver product line, engineered specifically for high-efficiency, high-reliability offline AC/DC and DC/AC conversion in industrial power infrastructure.

FAQ

What is the maximum allowable voltage on the HS pin of the UCC27714DR?

The UCC27714DR supports a maximum continuous voltage of 600 V on the HS pin relative to COM, with transient capability up to –8 V DC (at VDD = 12 V). This allows direct integration into 400-V AC mains-derived 600-V DC bus systems without external level-shifting circuitry. The device maintains functional logic integrity across this full range, verified per TI's SLUSBY6B datasheet Section 6.3.

Does the UCC27714DR support 100% duty cycle operation?

Yes, the UCC27714DR supports 100% duty cycle operation provided the HB–HS bootstrap supply remains above its UVLO turn-on threshold (minimum 7.7 V). This is achieved by ensuring sufficient LO conduction time to recharge the bootstrap capacitor during each cycle. The device's independent HI/LI inputs and absence of internal dead-time logic make it inherently compatible with continuous conduction mode topologies like phase-shifted full-bridge.

How does the UCC27714DR handle input floating conditions?

The UCC27714DR incorporates internal 400-kΩ pull-down resistors on HI and LI inputs and a 200-kΩ pull-up resistor on EN/NC. When HI or LI is left floating, the corresponding output (HO or LO) is held LOW, preventing unintended power switch activation. This fail-safe behavior is confirmed in the datasheet's Pin Functions table and Functional Block Diagram (Section 5 and Figure 38), ensuring robust operation during MCU reset or signal loss.

What is the purpose of the separate VSS and COM pins on the UCC27714DR?

The UCC27714DR uses separate VSS (logic ground) and COM (driver ground) pins to isolate digital control signals from high-current gate-drive return paths. This separation sustains up to ±6 V differential between VSS and COM, minimizing noise coupling into logic inputs and improving EMI performance. It also enables level-shifting flexibility in multi-supply systems, as explicitly defined in Section 6.3 Recommended Operating Conditions.

Can the UCC27714DR drive both MOSFETs and IGBTs effectively?

Yes, the UCC27714DR is explicitly rated for driving both power MOSFETs and IGBTs, as stated in the device description (Section 3) and supported by its ±4-A peak output current, rail-to-rail drive capability, and 600-V HS rating. Its 125-ns propagation delay and 20-ns delay matching ensure precise timing control critical for IGBT saturation avoidance and MOSFET zero-voltage switching optimization in bridge configurations.