Texas Instruments UCC27222EVM

Overview

UCC27222EVM from Texas Instruments is an evaluation module for the UCC27222 predictive synchronous buck driver, configured as a 5-V input, variable-output (0.9 V–1.8 V), 20-A synchronous buck converter operating at 500 kHz with peak efficiency of 92%. It implements Predictive Gate Drive™ technology to minimize body-diode conduction and reverse recovery losses in high-current low-voltage power delivery.

For engineers reviewing the UCC27222EVM datasheet, UCC27222EVM pinout, UCC27222EVM application, or UCC27222EVM equivalent, this module enables hands-on validation of Predictive Gate Drive™ performance, voltage-mode control loop stability up to 100 kHz bandwidth, and high-efficiency point-of-load conversion under real 20-A load conditions.

Technical Context

The UCC27222EVM–001 integrates the UCC27222 TSSOP-14 driver and UCC3803 SO-8 PWM controller to demonstrate Predictive Gate Drive™-a TI-patented technique that dynamically adjusts gate timing to eliminate synchronous rectifier body-diode conduction. It uses dual N-channel MOSFETs (HAT2168H upper, HAT2165H lower) and a 0.6-µH, 22-A output inductor.

Voltage-mode control is implemented via type-3 compensation, delivering 60–100 kHz loop bandwidth and 30°–60° phase margin. The board supports non-invasive control-loop measurement via TP3/TP4 test points and includes scope jacks (J1–J6) for probing gate drive waveforms, switch-node voltage, and controller output with ≤10 ns timing resolution.

Key Specifications

Availability

UCC27222EVM is available at Aetrix Electronics and suitable for processor power delivery, telecom point-of-load conversion, and datacom DC/DC design requiring stable component supply, rapid prototyping support, and validated high-efficiency reference performance.

Supply support for UCC27222EVM 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 company designing analog, embedded processing, and power management solutions for industrial, automotive, and computing applications.

The UCC27222EVM belongs to TI's Power Supply Control Products evaluation platform family, developed specifically to accelerate adoption of Predictive Gate Drive™ technology in high-current, low-voltage synchronous buck converters.

FAQ

What is the primary function of the UCC27222EVM?

The UCC27222EVM is an evaluation module designed to demonstrate and validate the UCC27222 predictive synchronous buck driver in a complete 5-V input, 0.9–1.8 V output, 20-A synchronous buck converter. It showcases Predictive Gate Drive™ technology, voltage-mode control implementation, and high-efficiency power delivery under real load conditions - enabling engineers to characterize timing, efficiency, and loop stability before custom design.

Does the UCC27222EVM include overcurrent protection?

No, the UCC27222EVM does not provide output overcurrent protection. Per the SLUU147 User's Guide, users must externally limit load current to ≤20 A to prevent damage. The module relies on external electronic loads with current limiting and recommends setting the DC input source current limit to 9 A for 5-V operation - a critical safety constraint explicitly stated in Section 6.2 and the CAUTION box in Section 6.1.

How is output voltage adjusted on the UCC27222EVM?

Output voltage on the UCC27222EVM is adjusted using the R11 50-kΩ trim potentiometer, which - combined with fixed resistor R10 (11 kΩ) - forms the feedback divider pull-up impedance. Rotating R11 fully counterclockwise sets VOUT to 0.9 V; fully clockwise sets it to 1.8 V. Intermediate settings yield proportional voltages per Figure 2, though 10% pot tolerance may prevent exact 0.900 V or 1.800 V calibration.

What test equipment interfaces are provided on the UCC27222EVM?

The UCC27222EVM provides dedicated test interfaces: J1 probes UCC3803 output; J2 and J3 access gate drive signals for Q2 (upper) and Q3 (lower) MOSFETs; J4 probes the switch-node voltage; J6 enables output voltage ripple measurement; and TP3/TP4 support non-invasive network analyzer connection for control-loop gain/phase analysis using the built-in 51.1-Ω isolation resistor (R14).

What thermal management guidance applies to the UCC27222EVM?

A small fan delivering 200–400 LFM airflow is recommended when operating above 10 A (50% rated load), as components can exceed 60°C without forced cooling. The EVM uses a double-sided PCB with top-side power stage placement and no enclosure - making active airflow essential for sustained 20-A operation. No heatsink is required for the UCC27222 IC itself due to its PowerPAD™ package (θ_JC = 2°C/W), but board-level thermal management remains user-responsible.