Texas Instruments UCC27201ADDAR

Overview

UCC27201ADDAR from Texas Instruments is a TTL-compatible, 120V half-bridge gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in hard-switching topologies. It delivers 3A sink/source output current, features 22ns propagation delay, 1ns delay matching between HO/LO, and integrated 0.65Ω bootstrap diode - enabling efficient operation in solar microinverters and telecom power supplies.

For engineers reviewing the UCC27201ADDAR datasheet, UCC27201ADDAR pinout, UCC27201ADDAR application, or UCC27201ADDAR equivalent, this page provides verified technical context, package-specific pin functions, real-world switching performance data, thermal metrics for SOIC-8 (DDA), and validated alternative drivers with documented input threshold and UVLO differences.

Technical Context

The UCC27201ADDAR implements independent CMOS/TTL-input logic with HI/LI pins driving matched high-side (HO referenced to HS) and low-side (LO referenced to VSS) outputs. Its internal level shifter enables precise 1ns delay matching across temperature (–40°C to 150°C) while sustaining –18V negative voltage on HS during fast transitions.

It integrates a 0.65V forward-voltage, 0.65Ω dynamic-resistance bootstrap diode between VDD and HB, eliminating external diodes. Dual undervoltage lockout (UVLO) circuits monitor both VDD (7.1V rising threshold, 0.5V hysteresis) and VHB–VHS differential (6.7V rising threshold, 0.4V hysteresis) to force outputs low under fault conditions.

Key Specifications

Pinout & Package

UCC27201ADDAR is packaged in an 8-pin SOIC with exposed PowerPAD™ (DDA variant), measuring 4.9 mm × 3.9 mm. The thermal pad is electrically connected to VSS and must be soldered to a large GND plane for optimal thermal performance (R_θJB = 20°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27200ADDAR and IRS2004PBF, UCC27201ADDAR offers superior timing accuracy (22 ns delay, 1 ns matching), integrated bootstrap diode, and native 3.3 V logic compatibility - making it optimal for high-efficiency, high-density power stages in solar, telecom, and battery test systems.

Availability

UCC27201ADDAR is available at Aetrix Electronics and suitable for solar microinverters, telecom AC-DC front-ends, and online UPS systems requiring stable component supply, extended temperature support, and production-ready gate driver performance.

Supply support for UCC27201ADDAR 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 decades of expertise in high-reliability power conversion ICs.

The UCC27201ADDAR belongs to TI's high-frequency gate driver product line, engineered specifically for half-bridge and full-bridge topologies in renewable energy, server power, and industrial test equipment demanding robustness, precision timing, and integrated bootstrap functionality.

FAQ

What is the input logic compatibility of UCC27201ADDAR?

UCC27201ADDAR features TTL-compatible input thresholds: HI pin recognizes logic high at 1.9–2.7 V and logic low at 1.3–1.9 V, enabling direct interface with 3.3 V or 5 V microcontrollers, FPGAs, and digital signal controllers without external level shifting. This differs from the CMOS-input UCC27200ADDAR, which requires ~6 V for high-level recognition. The UCC27201ADDAR's 0.7 V hysteresis also improves noise immunity in electrically noisy power stages.

Does UCC27201ADDAR include an integrated bootstrap diode?

Yes, UCC27201ADDAR integrates a 0.65 V forward-voltage, 0.65 Ω dynamic-resistance bootstrap diode between VDD and HB pins. This eliminates the need for an external Schottky diode in most half-bridge designs, reducing bill-of-materials count and PCB area. The diode supports fast recovery (20 ns turnoff) and handles up to 100 mA continuous current, making it suitable for 200 kHz+ switching in solar and telecom applications.

What is the maximum allowable voltage on the HS pin of UCC27201ADDAR?

The HS pin of UCC27201ADDAR is rated for –18 V (repetitive pulse <100 ns) and +120 V (DC), with recommended operating range up to +105 V. This –18 V negative tolerance allows safe operation during fast dV/dt transitions in hard-switching converters, such as those found in PFC stages or motor drives, where ringing or shoot-through can induce negative excursions on the switch node.

How does the UVLO function on UCC27201ADDAR protect the system?

UCC27201ADDAR implements dual independent UVLO circuits: one monitors VDD (7.1 V rising threshold, 0.5 V hysteresis) and forces both HO and LO low if violated; the other monitors VHB–VHS differential (6.7 V rising threshold, 0.4 V hysteresis) and disables only HO. This prevents partial drive conditions that could cause shoot-through or MOSFET damage during brownout or bootstrap capacitor discharge events.

What package type is used for UCC27201ADDAR, and how does it impact thermal performance?

UCC27201ADDAR uses the DDA package: an 8-pin SOIC with exposed PowerPAD™ thermally connected to VSS. When soldered to a 1-in² copper pour, its junction-to-board thermal resistance is 20°C/W - significantly lower than standard SOIC (59.6°C/W). This enables sustained 3 A output drive at 150°C junction temperature in compact, high-power-density designs like microinverters and battery testers.