NXP Semiconductors TEA1610T/N5,518

Overview

TEA1610T/N5,518 from NXP Semiconductors is a high-voltage zero-voltage-switching (ZVS) resonant converter controller IC implemented in DMOS process. It drives two external MOSFETs in half-bridge topology, integrates high-side level-shifting and bootstrap diode, features latched shutdown, transconductance error amplifier (gm = 330 µA/mV), and programmable oscillator with 188–550 kHz bridge frequency range. It is used in TV/monitor power supplies requiring high-efficiency, low EMI AC-DC conversion.

For engineers reviewing the TEA1610T/N5,518 datasheet, TEA1610T/N5,518 pinout, TEA1610T/N5,518 application, or TEA1610T/N5,518 equivalent, this page delivers verified technical context, exact pin functions, real-world ZVS resonant converter design parameters, and validated alternative controllers for high-voltage SMPS designs.

Technical Context

The TEA1610T/N5,518 employs a current-controlled oscillator generating a sawtooth waveform whose frequency is set by external capacitor Cf and charge/discharge currents at IRS and IFS pins. The oscillator output is divided by two to ensure precise 50 % duty cycle at gate drivers GH and GL.

It integrates a transconductance error amplifier (VI(CM) ≤ 2.5 V, gm = 330 µA/mV) that sources current into IRS to modulate oscillator frequency for output voltage regulation. A latched shutdown circuit triggers at VSD(th) = 2.33 V and clamps VDD to 12.0 V during fault conditions.

Key Specifications

Pinout & Package

TEA1610T/N5,518 is housed in SO16 package (SOT109-2): plastic small outline, 16 leads, 3.9 mm body width, low stand-off height.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar zero-voltage-switching resonant converter controller applications.

Compared with UCC256301DR and ICE2HS01G, the TEA1610T/N5,518 offers analog programmability of both minimum/maximum frequency and dead time via discrete resistors, making it suitable for custom-tuned ZVS half-bridge designs where flexibility in resonant tank optimization is critical.

Availability

TEA1610T/N5,518 is available at Aetrix Electronics and suitable for TV power supplies, monitor power supplies, and industrial high-voltage power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TEA1610T/N5,518 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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.

The TEA1610T/N5,518 belongs to NXP's high-voltage resonant controller product line, designed specifically for energy-efficient, low-EMI ZVS half-bridge power supplies in display and industrial equipment.

FAQ

What is the maximum high-side voltage rating supported by the TEA1610T/N5,518?

The TEA1610T/N5,518 supports a high-side driver voltage (VHS) up to 600 V, enabling direct interface with 600 V-class MOSFETs in half-bridge configurations. This rating is specified in the Absolute Maximum Ratings table and validated under continuous operation with proper thermal management and layout isolation. The IC maintains functional integrity at this voltage when SH is referenced to PGND and VDD(F) is supplied via bootstrap.

How does the TEA1610T/N5,518 achieve zero-voltage switching in practice?

The TEA1610T/N5,518 achieves zero-voltage switching by precisely controlling the half-bridge switching frequency to match the resonant frequency of the external LC tank (Lr, Cr). Its current-controlled oscillator adjusts frequency dynamically based on feedback from the transconductance error amplifier, ensuring MOSFETs turn on only when drain-source voltage crosses zero. This soft-switching behavior minimizes switching losses and EMI, especially at light-to-moderate loads.

Can the TEA1610T/N5,518 operate without an external timing capacitor?

No - the TEA1610T/N5,518 requires an external capacitor (CF) connected to Pin 13 to set oscillator timing. The oscillator is current-controlled: charge/discharge currents at IRS and IFS pins interact with CF to generate the sawtooth waveform. Omitting CF disables oscillator function, preventing gate drive output. Typical values range from 100 pF to 220 pF depending on target frequency and stability requirements.

What is the purpose of the n.c. pin (Pin 5) on the TEA1610T/N5,518?

Pin 5 on the TEA1610T/N5,518 is explicitly designated as "not connected" and serves as a high-voltage spacer between adjacent pins. It has no internal connection and must remain unconnected in PCB layout. Its presence improves creepage and clearance distances in high-voltage sections of the half-bridge, reducing risk of arcing or leakage between SH (Pin 6) and I− (Pin 1) under 600 V stress.

Does the TEA1610T/N5,518 include an integrated bootstrap diode?

Yes - the TEA1610T/N5,518 integrates a high-voltage bootstrap diode (Vd(boot) = 1.5–2.1 V at 5 mA) between VDD(F) and VDD. This eliminates the need for an external diode in the bootstrap supply path, simplifying layout and improving reliability. The diode enables automatic charging of the bootstrap capacitor during low-side conduction, sustaining VDD(F) for high-side gate drive in continuous operation.