Texas Instruments UCC27201DRMT

Overview

UCC27201DRMT 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 UCC27201DRMT datasheet, UCC27201DRMT pinout, UCC27201DRMT application, or UCC27201DRMT 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 VSON-8 package thermal performance.

Technical Context

The UCC27201DRMT implements independent CMOS/TTL-input logic with level-shifted high-side drive referenced to HS, enabling precise timing control in half-bridge topologies. Its on-chip bootstrap diode eliminates external discrete diodes while supporting up to 120V HB voltage and 105V HS operating range.

Undervoltage lockout operates separately on VDD (7.1V rising threshold, 0.5V hysteresis) and VHB–VHS (6.7V rising threshold, 0.4V hysteresis), forcing both outputs low during fault conditions. The device is specified across –40°C to +150°C junction temperature and supports 200kHz+ switching in hard-switched converters.

Key Specifications

Pinout & Package

The UCC27201DRMT uses an 8-pin VSON (DRM) package with 4.0 mm × 4.0 mm body size and exposed thermal pad electrically tied to VSS. Thermal resistance R_θJB = 21.3°C/W enables high-power-density layouts without external heatsinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27211DRMT, the UCC27201DRMT trades enable functionality and 33% higher current for lower cost and identical timing specs; versus IRS2004PBF, it delivers 5.5× faster propagation, integrated bootstrap, and 4× better thermal resistance - making it optimal for high-frequency, space-constrained, and thermally demanding designs.

Availability

UCC27201DRMT 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.

Supply support for UCC27201DRMT 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 focused on analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability power solutions.

The UCC2720x family was designed specifically for high-frequency, high-voltage half-bridge gate driving in renewable energy, telecom, and industrial power conversion - emphasizing integration, timing precision, and ruggedness across extended temperature ranges.

FAQ

What is the input logic compatibility of the UCC27201DRMT?

The UCC27201DRMT features TTL-compatible input thresholds: 1.9 V to 2.7 V for high-level recognition and 1.3 V to 1.9 V for low-level recognition, with 0.7 V hysteresis. This allows direct interfacing with 3.3 V or 5 V microcontrollers and PWM controllers without level-shifting circuitry. Unlike the UCC27200DRMT (CMOS input), the UCC27201DRMT is optimized for legacy digital logic families and low-voltage control signals.

Does the UCC27201DRMT require an external bootstrap diode?

No, the UCC27201DRMT integrates a bootstrap diode with 0.65 V forward voltage and 0.65 Ω dynamic resistance. This eliminates the need for an external diode, reduces PCB area, and improves reliability by removing a potential failure point. The internal diode connects VDD to HB and is rated for continuous 100 mA and pulsed 120 mA operation - sufficient for typical bootstrap capacitor recharge in 200–500 kHz applications.

What is the maximum allowable voltage on the HS pin of the UCC27201DRMT?

The UCC27201DRMT supports a maximum DC voltage of 105 V on the HS pin under recommended operating conditions, with a 120 V absolute maximum rating for repetitive pulses <100 ns. This enables use in 100 V-class solar optimizers and telecom 48 V–60 V bus converters. The –5 V negative voltage tolerance on HS further accommodates switch-node ringing in fast-switching GaN or SiC designs without latch-up.

How does the undervoltage lockout (UVLO) function on the UCC27201DRMT?

The UCC27201DRMT 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 brown-out or bootstrap capacitor depletion while maintaining low-side control for fault handling - a critical safety feature in UPS and energy storage systems.

What thermal advantages does the VSON-8 (DRM) package of the UCC27201DRMT provide?

The UCC27201DRMT's VSON-8 (DRM) package features an exposed thermal pad electrically connected to VSS, achieving R_θJB = 21.3°C/W - over 2.8× better than the SOIC-8 (D) variant. This allows efficient heat transfer to the PCB ground plane, enabling sustained 3A output current operation at +125°C ambient without external heatsinks. The 4.0 mm × 4.0 mm footprint also supports high-density power stage layouts in space-constrained applications like microinverters.