NXP Semiconductors TEA19162T/1J

Overview

TEA19162T/1J from NXP Semiconductors is a dedicated Power Factor Correction (PFC) controller IC for resonant power supplies, operating in quasi-resonant and discontinuous conduction modes with valley switching. It delivers accurate boost voltage regulation (2.5 V reference), supports universal AC input (70–276 V_AC), enables active X-capacitor discharge without external components, and targets 90–500 W systems used in desktop PCs and LCD TVs.

For engineers reviewing the TEA19162T/1J datasheet, TEA19162T/1J pinout, TEA19162T/1J application, or TEA19162T/1J equivalent, key selection considerations include its integrated burst-mode coordination with TEA19161T, fast latch reset for mains-reconnect recovery, soft-start/soft-stop sequencing, and dual-protection signaling via SNSBOOST pin.

Technical Context

The TEA19162T/1J implements ton-controlled PFC regulation using an internal transconductance error amplifier referenced to a trimmed 2.63 V on SNSBOOST, with dynamic gm adjustment during transients to prevent false OVP triggering. Its valley detection relies on SNSAUX input with built-in 44.5 µs demagnetization timeout and 3.8 µs valley signal generation when auxiliary signals are absent.

Communication with the TEA19161T LLC controller occurs exclusively through shared SUPIC supply and bidirectional SNSBOOST signaling - enabling coordinated start-up, burst-mode entry (via 2.8–3.23 V window), and latched protection reset (via 2.0 V pull-up). Mains compensation uses SNSMAINS current sensing to maintain constant loop bandwidth across 70–276 V_AC.

Key Specifications

Pinout & Package

TEA19162T/1J is housed in an SO8 package (SOT96-1), 3.9 mm body width, with gull-wing leads suitable for standard reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC28070DWR and ICE3PCS01G, the TEA19162T/1J uniquely integrates PFC-LLC communication, active X-cap discharge, and valley-switching control - enabling complete 90–500 W resonant power supplies with <75 mW no-load consumption and single-BOM global AC input support.

Availability

TEA19162T/1J is available at Aetrix Electronics and suitable for desktop PC power supplies, LCD television PSUs, and notebook adapters requiring stable component supply, long-term lifecycle assurance, and compliance with Energy Star, DoE Level VI, and EU Eco-design directives.

Supply support for TEA19162T/1J 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 Dutch semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in power management and high-efficiency AC-DC conversion.

The TEA19162T/1J belongs to NXP's TEA19xx resonant power supply controller family, designed specifically to enable compact, high-efficiency, and ultra-low-standby-power power supplies for computing and display applications.

FAQ

What is the primary function of the TEA19162T/1J in a power supply design?

The TEA19162T/1J is a dedicated Power Factor Correction (PFC) controller IC optimized for resonant topologies. Its core function is to regulate the boost-stage output voltage (typically 380–400 V DC) while coordinating with the TEA19161T LLC controller via the SNSBOOST pin. It implements valley switching, burst-mode operation, and active X-capacitor discharge - all critical for achieving <75 mW no-load power and >92% peak efficiency in 90–500 W systems. The TEA19162T/1J does not operate standalone; it requires pairing with TEA19161T or TEA1995T for full system functionality.

How does the TEA19162T/1J achieve ultra-low no-load power consumption?

The TEA19162T/1J achieves <75 mW total system no-load input power through three integrated mechanisms: (1) burst-mode operation coordinated with TEA19161T via SNSBOOST pin, reducing PFC switching at light loads; (2) active X-capacitor discharge that eliminates bleeder resistor losses; and (3) 200 µA quiescent current in burst mode. These features collectively eliminate the need for auxiliary low-power supplies. The TEA19162T/1J itself contributes <10 mW in burst mode, with the remainder attributed to optimized LLC and synchronous rectifier stages in the full TEA19xx combo system.

What protection features are implemented in the TEA19162T/1J and how are they signaled?

The TEA19162T/1J implements OverVoltage Protection (OVP), OverCurrent Protection (OCP), Open-Loop Protection (OLP), Short-Circuit Protection (SCP), brownin/brownout detection, and internal/external OverTemperature Protection (OTP). Critical protections like OVP and OTP are latched and signaled bidirectionally via the SNSBOOST pin - pulling it low disables the companion TEA19161T LLC controller, while pulling it to 2.0 V resets both controllers after mains reconnection. OCP operates cycle-by-cycle at 0.5 V on SNSCUR, while SCP triggers when SNSBOOST falls below 0.4 V. All protections are validated per IEC/EN 62368-1 safety requirements.

Can the TEA19162T/1J be used without the TEA19161T LLC controller?

No, the TEA19162T/1J is not designed for standalone use. Its start-up sequence, burst-mode control, protection signaling, and supply regulation depend on bidirectional communication with the TEA19161T via shared SUPIC and SNSBOOST pins. Attempting to operate the TEA19162T/1J independently results in failure to initiate switching - the SNSBOOST pin remains pulled low by the unpowered TEA19161T, preventing PFC enablement. For non-resonant applications, NXP offers alternative PFC controllers like the UBA2213, but the TEA19162T/1J requires the TEA19161T or TEA1995T to function as specified.

What is the role of the SNSMAINS pin on the TEA19162T/1J and how is it configured?

On the TEA19162T/1J, the SNSMAINS pin serves a dual function: (1) mains voltage sensing for brownin/brownout detection via peak current measurement, and (2) external NTC thermistor bias for overtemperature protection. During normal operation, it sinks current proportional to rectified mains voltage; when mains drops below threshold, it sources 26 µA to measure NTC resistance. Configuration requires a precision resistive divider from rectified mains to SNSMAINS, with typical values of 1 MΩ series + 100 kΩ to GND. No external capacitor is required. The pin's dual-role design eliminates separate sensing circuits, reducing BOM count and PCB area in compact 90–500 W designs.