Texas Instruments UCC27201ADRCR

Overview

UCC27201ADRCR from Texas Instruments is a 120V, 3A/3A high-side/low-side N-channel MOSFET driver in a 9-pin VSON package (3.0 mm × 3.0 mm), featuring independent TTL-compatible inputs, integrated 0.65 V bootstrap diode, 22 ns propagation delay, and dual UVLO (8 V on VDD, 6.7 V on VHB). It enables efficient half-bridge switching in high-voltage DC-DC converters for solar microinverters.

For engineers reviewing the UCC27201ADRCR datasheet, UCC27201ADRCR pinout, UCC27201ADRCR application, or UCC27201ADRCR equivalent, key selection criteria include its –18 V HS negative voltage tolerance, 1 ns delay matching between HO/LO, 8 ns rise/7 ns fall time into 1000 pF, and operation across –40°C to 150°C junction temperature.

Technical Context

The UCC27201ADRCR implements independent CMOS-level-shifting logic with TTL input thresholds (1.9–2.7 V HI, 1.3–1.9 V LI), enabling direct interface with 3.3 V/5 V controllers without external level shifters. Its internal bootstrap diode (0.65 V VF, 0.65 Ω RD) eliminates discrete diodes while supporting up to 120 V HB voltage and 105 V HS bias range.

UVLO protection operates separately on VDD (7.1 V rising threshold, 0.5 V hysteresis) and VHB–VHS (6.7 V rising threshold, 0.4 V hysteresis), forcing both outputs low during undervoltage conditions. The device achieves 1 ns turn-on/turn-off delay matching between high-side and low-side drivers under matched load conditions.

Key Specifications

Pinout & Package

The UCC27201ADRCR uses a thermally enhanced 9-pin VSON package (DRC) measuring 3.0 mm × 3.0 mm with an exposed thermal pad electrically tied to VSS. This layout reduces R_θJB to 22.6°C/W for improved power dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27200ADRCR, the UCC27201ADRCR offers lower input thresholds for direct 3.3 V MCU compatibility, while IRS2004MTRPBF trades integration and thermal performance for higher voltage capability-making UCC27201ADRCR optimal for space-constrained, 100 V-class solar and telecom converters.

Availability

UCC27201ADRCR is available at Aetrix Electronics and suitable for solar microinverters, telecom power supplies, and online UPS systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for UCC27201ADRCR 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 ICs, with decades of expertise in high-reliability power conversion solutions.

The UCC2720xA family was designed specifically for high-frequency, high-voltage half-bridge gate driving in renewable energy and industrial power systems-emphasizing integration, thermal robustness, and noise immunity.

FAQ

What is the purpose of the N/C pin on the UCC27201ADRCR?

The N/C (no connection) pin on the UCC27201ADRCR is an unused terminal with no internal bond wire or circuit connection. It may be left floating or tied to VSS for mechanical stability and EMI reduction, but it carries no electrical function. This pin exists due to the 9-pin VSON (DRC) package variant's layout constraints and does not affect UCC27201ADRCR operation or thermal performance.

Does the UCC27201ADRCR require an external bootstrap diode?

No, the UCC27201ADRCR integrates a bootstrap diode with 0.65 V forward voltage and 0.65 Ω dynamic resistance, eliminating the need for an external diode. This internal diode connects VDD (anode) to HB (cathode) and enables automatic charging of the external bootstrap capacitor during each low-side conduction phase. Using the integrated diode reduces component count, PCB area, and potential failure points in UCC27201ADRCR-based designs.

What is the maximum allowable voltage on the HS pin of the UCC27201ADRCR?

The UCC27201ADRCR supports a maximum DC voltage of 105 V on the HS pin under recommended operating conditions, with absolute maximum rating of 120 V. It also tolerates –18 V negative transients (repetitive pulses <100 ns), making it suitable for high-dV/dt switching nodes in hard-switched topologies. Exceeding 105 V DC risks violating UVLO hysteresis margins and may trigger unintended shutdown in UCC27201ADRCR operation.

How does the UCC27201ADRCR handle undervoltage lockout?

The UCC27201ADRCR 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 ensures safe shutdown during supply brownout or bootstrap capacitor depletion while maintaining low-side control integrity in UCC27201ADRCR applications.

Can the UCC27201ADRCR drive GaN FETs effectively?

Yes, the UCC27201ADRCR can drive enhancement-mode GaN FETs effectively due to its ±3 A peak output current, 8 ns rise/7 ns fall time into 1000 pF, and 22 ns propagation delay-parameters well-suited for GaN's low Q_G and fast switching requirements. Its TTL-compatible inputs simplify interface with 3.3 V FPGA or MCU PWM generators, and the 1 ns delay matching helps maintain precise dead-time control critical for GaN half-bridge reliability in UCC27201ADRCR designs.