NXP Semiconductors TEA2093TS/1H

Overview

TEA2093TS/1H from NXP Semiconductors is a GreenChip synchronous rectifier (SR) controller IC for secondary-side flyback and asymmetrical half-bridge converters. It delivers adaptive gate drive, 37 mV regulation voltage, <200 μA no-load supply current, and 120 V drain-sense capability - enabling high-efficiency rectification in USB PD and low-voltage battery-charging applications.

For engineers reviewing the TEA2093TS/1H datasheet, TEA2093TS/1H pinout, TEA2093TS/1H application, or TEA2093TS/1H equivalent, key selection criteria include its self-supplying operation down to 0 V output, 0.50 A source / 0.65 A sink gate drive, TSOP6 package compatibility, and support for both high-side and low-side SR MOSFET configurations.

Technical Context

The TEA2093TS/1H implements a drain-source differential sensing architecture with precise regulation at −37 mV and switch-off triggered at +300 mV. Its SOI process enables robust operation under high dI/dt conditions while minimizing parasitic interference on SOURCE and DRAIN sense paths.

It features dual supply management: CAP pin self-charging via DRAIN (up to 120 V), and XV pin configurable for 4 V–12 V gate drive voltage scaling. UVLO activates at 3.7 V on CAP and includes active gate pull-down during lockout.

Key Specifications

Pinout & Package

TEA2093TS/1H is housed in a TSOP6 (SOT457) plastic surface-mounted package - 6-lead, 3.1 mm × 2.7 mm footprint, 1.1 mm max height, optimized for compact flyback secondary-side layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCP4307DR2G and IRS11682PBF, the TEA2093TS/1H uniquely combines self-supplying operation, adjustable gate voltage (4–12 V), and precise −37 mV regulation - making it optimal for compact, low-voltage, and high-efficiency USB PD and battery-charging designs where auxiliary windings are impractical.

Availability

TEA2093TS/1H is available at Aetrix Electronics and suitable for USB PD adapters, low-voltage battery chargers, and asymmetrical half-bridge flyback power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for TEA2093TS/1H 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 consumer applications.

The TEA2093TS/1H belongs to NXP's GreenChip family - designed specifically for high-efficiency AC-DC conversion in compact, low-standby-power power supplies targeting USB charging, adapters, and battery-powered systems.

FAQ

What is the primary function of the TEA2093TS/1H in a flyback power supply?

The TEA2093TS/1H serves as a dedicated synchronous rectifier controller on the secondary side of flyback and asymmetrical half-bridge converters. It senses the drain-source voltage of an external SR MOSFET and drives its gate to replace the output rectifier diode - significantly reducing conduction losses. In the TEA2093TS/1H, this is achieved through adaptive regulation at −37 mV and fast turn-off at +300 mV, directly improving overall efficiency.

How does the TEA2093TS/1H achieve self-supplying operation in low-output-voltage applications?

The TEA2093TS/1H achieves self-supplying operation by charging its internal supply capacitor (CAP pin) directly from the DRAIN pin - even when the output voltage is as low as 0 V. When the DRAIN voltage goes positive during flyback reset, current flows into CAP through an internal diode, building up sufficient voltage (≥3.7 V) to exit UVLO. This eliminates the need for an auxiliary winding, which is critical in space-constrained USB PD and battery-charging designs using the TEA2093TS/1H.

What is the significance of the SOURCE pin on the TEA2093TS/1H?

The SOURCE pin on the TEA2093TS/1H provides a dedicated, low-impedance connection point for measuring the SR MOSFET's source potential - separate from the main power ground. This minimizes errors caused by PCB track inductance during high dI/dt switching events. By referencing the gate drive decision to an accurate local source voltage, the TEA2093TS/1H maintains precise −37 mV regulation and avoids over- or under-driving the MOSFET gate - a key factor in reliability and efficiency across load transients.

Can the TEA2093TS/1H be used in high-side rectification configurations?

Yes, the TEA2093TS/1H supports high-side rectification without auxiliary biasing. Its DRAIN pin handles up to +120 V, and the CAP pin is charged directly from the drain node during the off-time of the SR MOSFET. Combined with XV pin configuration for appropriate gate drive voltage (e.g., 4 V for logic-level devices), the TEA2093TS/1H operates fully self-sufficiently in high-side topologies - a capability confirmed in Figure 10 of the official datasheet and validated in production USB PD reference designs using the TEA2093TS/1H.

What are the key thermal considerations when designing with the TEA2093TS/1H?

The TEA2093TS/1H has a junction-to-ambient thermal resistance (R_th(j-a)) of 200 K/W on a JEDEC test board. To ensure reliable operation up to +150 °C junction temperature, PCB layout must provide adequate copper pour under the exposed pad (if present) and minimize trace length between SOURCE/DRAIN pins and the SR MOSFET. The device's SOI process inherently reduces thermal coupling, but sustained high gate drive currents (>0.5 A) require attention to local copper area and airflow - especially in enclosed adapters where the TEA2093TS/1H operates near its 300 mW power dissipation limit.