NXP Semiconductors TEA2017AAT/3Y

Overview

TEA2017AAT/3 from NXP Semiconductors is a digital configurable LLC and multimode PFC controller in SO16 package, integrating both PFC (DCM/QR, CCM fixed-frequency, or multimode) and LLC control functions for resonant power supplies. It delivers <75 mW no-load input power, supports 90–1000 W output range with TEA2095T, and enables valley/zero-voltage switching for high efficiency across load range - used in gaming PSUs and UHD TV power stages.

For engineers reviewing the TEA2017AAT/3 datasheet, TEA2017AAT/3 pinout, TEA2017AAT/3 application, or TEA2017AAT/3 equivalent, key selection criteria include programmable operation mode transitions (high-power/low-power/burst), integrated X-cap discharge, configurable OVP/OCP/OTP protection thresholds, and GUI-based configuration of soft-start, frequency jitter, and feedback regulation parameters.

Technical Context

The TEA2017AAT/3 implements a hardware-based digital state machine architecture for deterministic real-time control of both PFC and LLC stages. Its Vcap-based LLC regulation loop directly measures primary capacitor voltage to derive output power, enabling precise, gain-stable mode transitions without external compensation.

PFC operation supports three configurable modes: DCM/QR, CCM fixed-frequency, and multimode - each with independently programmable thresholds and timing. The device integrates HV start-up (via DRAINPFC), bootstrap-supplied high-side drivers (SUPHS powered by GATELS), and capacitive-mode regulation (CMR) with valley detection.

Key Specifications

Pinout & Package

TEA2017AAT/3 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads and 3.9 mm body width. Pin functions are validated per NXP's official pin description table (Rev. 1.2, Section 7.2).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital PFC+LLC controller applications.

Compared with STNRG388A and ICE5QSBG, the TEA2017AAT/3 uniquely combines fully programmable multimode PFC, Vcap-based LLC regulation, and GUI-configurable protections - enabling one platform to cover 90–1000 W with minimal layout changes and no auxiliary supply.

Availability

TEA2017AAT/3 is available at Aetrix Electronics and suitable for gaming power supplies, UHD television power stages, and server PSUs requiring stable component supply, long-term lifecycle support, and compliance with Energy Star, EU Eco-design, and DoE Level VI standards.

Supply support for TEA2017AAT/3 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and power electronics markets.

The TEA2017AAT/3 belongs to NXP's GreenChip™ family of high-efficiency AC-DC controllers, designed specifically for digitally configurable, ultra-low-noise, and ultra-low-standby resonant power supplies targeting consumer and computing applications.

FAQ

What is the primary function of the TEA2017AAT/3 in a power supply design?

The TEA2017AAT/3 serves as a dual-function digital controller that integrates both PFC (power factor correction) and LLC resonant converter control in a single SO16 package. It manages input-stage boost regulation and primary-side LLC half-bridge switching using Vcap-based output power regulation - eliminating the need for separate PFC and LLC ICs while enabling <75 mW no-load power in systems paired with TEA2095T.

How does the TEA2017AAT/3 achieve zero-voltage switching (ZVS) assurance?

The TEA2017AAT/3 achieves ZVS assurance through hardware-level valley detection using the DRAINPFC and HB pins. It monitors the LLC half-bridge node (HB) and PFC drain voltage to precisely time gate drive edges relative to resonant current zero-crossings. This real-time, analog-assisted digital control ensures ZVS across the full load range - reducing switching losses and EMI without requiring external timing compensation circuits.

Can the TEA2017AAT/3 operate without an auxiliary winding on the LLC transformer?

Yes - the TEA2017AAT/3 supports HV start-up via its DRAINPFC pin, which internally sources current to charge the SUPIC capacitor at power-on. While an auxiliary winding is used for normal operation to supply SUPIC, the HV start-up path allows initial bootstrapping without it. However, sustained operation without the auxiliary winding is not supported, as the DRAINPFC current source is intended only for startup and protection recovery.

What protection features are configurable in the TEA2017AAT/3 and how are they set?

The TEA2017AAT/3 offers independently configurable OVP, OCP, OTP, OPP, CMR, brown-in/out, and inrush current protection - each with programmable threshold levels, response types (latched, auto-restart, or restart-after-attempts), and timing delays. These are set via NXP's GUI tool and stored in the device's secure MTP memory, allowing field updates and IP protection without hardware changes.

Does the TEA2017AAT/3 support multiple PFC operating modes, and how are they selected?

Yes - the TEA2017AAT/3 supports three PFC operating modes: DCM/QR, CCM fixed-frequency, and multimode (DCM/QR/CCM). Mode selection is performed via configuration bits programmed into the device's MTP memory using NXP's GUI tool. Each mode can be tuned with independent parameters including frequency, current limit, and transition points - enabling optimization for efficiency, EMI, or light-load behavior per application.