Texas Instruments UCC27201DRMR

Overview

UCC27201DRMR from Texas Instruments is a TTL-compatible, 120V half-bridge gate driver IC for high-frequency N-channel MOSFET control in high-side/low-side configurations. It delivers 3A source/sink output current, features an integrated 0.65Ω bootstrap diode, and supports –5V negative HS voltage handling - enabling robust operation in solar microinverters and telecom power supplies.

For engineers reviewing the UCC27201DRMR datasheet, UCC27201DRMR pinout, UCC27201DRMR application, or UCC27201DRMR equivalent, key selection criteria include its 8V UVLO threshold, 22ns propagation delay, 1ns delay matching between HO/LO, 8ns/7ns rise/fall times (1000pF), and SOIC-8 PowerPAD™ package thermal performance.

Technical Context

The UCC27201DRMR implements independent CMOS/TTL-input logic with level-shifted high-side drive referenced to the HS node, enabling precise timing control in hard-switching topologies. Its on-chip bootstrap diode eliminates external discrete diodes while supporting up to 120V HB voltage and –5V HS transient tolerance.

Undervoltage lockout operates separately on VDD (7.1V rising threshold, 0.5V hysteresis) and VHB–VHS (6.7V rising threshold, 0.4V hysteresis), ensuring safe shutdown of low-side and high-side drivers under fault conditions. Propagation delays remain stable across –40°C to 150°C and supply voltages from 8V to 17V.

Key Specifications

Pinout & Package

The UCC27201DRMR is packaged in an 8-pin SOIC with PowerPAD™ (DDA), measuring 3.9 mm × 4.9 mm. The exposed thermal pad is electrically tied 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 UCC27200DRMR, the UCC27201DRMR offers lower input thresholds for direct 3.3V MCU compatibility; compared with IRS2004STRPBF, it trades off voltage rating for tighter timing, integrated diode, and superior thermal performance in compact 100V-class systems.

Availability

UCC27201DRMR is available at Aetrix Electronics and suitable for solar power optimizers, telecom power supplies, and online UPS systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for UCC27201DRMR 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 UCC2720x family was designed specifically for high-frequency, high-voltage half-bridge gate driving in renewable energy, telecom, and industrial power systems - emphasizing integration, timing precision, and ruggedness over temperature and voltage extremes.

FAQ

What is the input logic compatibility of the UCC27201DRMR?

The UCC27201DRMR features TTL-compatible input thresholds: 1.9–2.7 V for logic high and 1.3–1.9 V for logic low, with 0.7 V hysteresis. This allows direct interface with 3.3 V and 5 V microcontrollers and digital PWM controllers without external level-shifting circuitry. Unlike the UCC27200DRMR, which uses CMOS thresholds, the UCC27201DRMR is optimized for low-voltage logic compatibility - a key distinction confirmed in TI's SLUS746D datasheet Section 5.5.

Does the UCC27201DRMR include an integrated bootstrap diode?

Yes, the UCC27201DRMR integrates a bootstrap diode with 0.65 V forward voltage and 0.65 Ω dynamic resistance, connecting internally between VDD and HB pins. This eliminates the need for an external discrete diode, reducing BOM count and PCB area. The diode is rated for 100 mA continuous forward current and supports fast recovery (<20 ns turnoff time), as verified in Section 5.5 and 5.6 of the official datasheet.

What is the maximum allowable voltage on the HS pin of the UCC27201DRMR?

The UCC27201DRMR supports a maximum DC voltage of 120 V on the HB pin and 105 V on the HS pin under recommended operating conditions. For repetitive pulses <100 ns, the HS pin tolerates –5 V to 110 V. These ratings are specified in Section 5.1 (Absolute Maximum Ratings) and Section 5.3 (Recommended Operating Conditions) of the TI datasheet SLUS746D, confirming suitability for 100 V-class solar and energy storage applications.

How does the UCC27201DRMR handle undervoltage lockout?

The UCC27201DRMR 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 bootstrap capacitor discharge or supply sag - a critical feature validated across –40°C to +150°C in Section 5.5 and 6.3.2 of the datasheet.

What package type is used for the UCC27201DRMR and how does it impact thermal performance?

The UCC27201DRMR uses the DDA package: an 8-pin SOIC with PowerPAD™ (exposed thermal pad). Its R_θJB is 20°C/W - significantly lower than the standard SOIC (D) version's 59.6°C/W - due to direct thermal conduction from the pad to the PCB ground plane. This package is explicitly listed in TI's "Device Information" table and enables reliable 3A drive operation at 150°C junction temperature, as confirmed in Section 5.4 Thermal Information.