Texas Instruments UCC27201D

Overview

UCC27201D from Texas Instruments is a TTL-compatible, 120V half-bridge gate driver IC for high-frequency N-channel MOSFET control in isolated DC-DC and AC-DC topologies. It delivers 3A source/sink output current, features 22ns propagation delay, 8ns/7ns rise/fall times (1000pF), and independent high-side/low-side inputs with 1ns delay matching - enabling precise timing in solar microinverters and telecom power supplies.

For engineers reviewing the UCC27201D datasheet, UCC27201D pinout, UCC27201D application, or UCC27201D equivalent, this page provides verified electrical specifications, SOIC-8 package details, thermal performance data, UVLO thresholds, bootstrap diode characteristics, and real-world implementation guidance for high-side floating drive in hard-switched converters.

Technical Context

The UCC27201D integrates a level-shift circuit to reference the high-side driver to the HS node, enabling operation with up to 120V bootstrap voltage and –5V negative HS transient tolerance. Its on-chip 0.65V forward-voltage, 0.65Ω dynamic-resistance bootstrap diode eliminates external discrete diodes while supporting fast boot capacitor recharge.

Independent CMOS/TTL-selectable inputs (UCC27200 vs. UCC27201) allow direct interfacing with 3.3V/5V controllers; undervoltage lockout (7.1V VDD rising threshold, 6.7V HB rising threshold) protects both drivers during brownout conditions across –40°C to 150°C junction temperature.

Key Specifications

Pinout & Package

UCC27201D is housed in an 8-pin SOIC (D package), 3.9 mm × 4.9 mm body size, with exposed pad not present (unlike DDA/DRM variants). Thermal resistance R_θJA = 112.5°C/W enables operation up to 150°C junction temperature with standard PCB copper area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27200D, UCC27201D offers direct 3.3V logic compatibility without external level shifters; compared with IRS2005PBF, it delivers superior timing accuracy, integrated bootstrap functionality, and tighter thermal specs - making it optimal for high-frequency, space-constrained power modules.

Availability

UCC27201D 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 guaranteed traceable sourcing.

Supply support for UCC27201D 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-efficiency, high-frequency half-bridge and full-bridge gate driving in renewable energy, server power, and industrial UPS applications - emphasizing integration, thermal resilience, and noise immunity.

FAQ

What is the input voltage threshold type for UCC27201D?

The UCC27201D features TTL-compatible input thresholds: 1.9–2.7 V for high-level recognition and 1.3–1.9 V for low-level recognition, with 0.7 V hysteresis. This allows direct interfacing with 3.3V or 5V microcontrollers and digital signal processors without external level-shifting circuitry - a key differentiator from the CMOS-input UCC27200D variant. The UCC27201D maintains these thresholds across its full operating temperature range.

Does UCC27201D include an integrated bootstrap diode?

Yes, the UCC27201D integrates a bootstrap diode with 0.65 V typical forward voltage and 0.65 Ω dynamic resistance. This eliminates the need for an external Schottky diode in most half-bridge designs, reducing component count and PCB area. The diode connects internally between VDD and HB pins, enabling automatic charging of the external bootstrap capacitor during each low-side conduction period - a feature confirmed in TI's SLUS746D datasheet Section 6.3.4.

What is the maximum allowable voltage on the HS pin of UCC27201D?

The UCC27201D supports a maximum DC voltage of 120 V on the HS pin, with transient tolerance down to –5 V for pulses shorter than 100 ns. This specification is defined in the Absolute Maximum Ratings table (Section 5.1) and enables use in high-bus-voltage applications such as 100V-class solar optimizers and telecom rectifiers. Operation beyond these limits risks permanent device damage.

How does UCC27201D handle undervoltage lockout?

The UCC27201D implements dual independent UVLO circuits: one monitors VDD (7.1 V rising threshold, 0.5 V hysteresis) and forces both outputs low if violated; the other monitors VHB–VHS (6.7 V rising threshold, 0.4 V hysteresis) and disables only the high-side driver. This prevents shoot-through during bootstrap capacitor depletion while maintaining low-side control - a safety-critical feature validated across –40°C to +150°C in TI's characterization data.

What package options are available for UCC27201D?

The UCC27201D is specified in the 8-pin SOIC (D) package with 3.9 mm × 4.9 mm body size and standard gull-wing leads. Unlike the DDA (PowerPAD™ SOIC) and DRM (VSON) variants, the D package has no thermal pad. Its junction-to-ambient thermal resistance is 112.5°C/W, requiring adequate PCB copper area for thermal management in continuous 3A drive applications - as documented in Section 5.4 of the official datasheet.