Infineon Technologies TDA4862GGEGXUMA2

Overview

TDA4862GGEGXUMA2 from Infineon Technologies is a bipolar power-factor controller IC designed for active harmonic filtering in discontinuous-conduction-mode (DCM) boost preconverters. It delivers near-unity power factor (>0.99), integrates a ±1.4% trimmed 2.5 V reference, features zero-current detection for lossless switching, and drives external MOSFETs via a totem-pole gate driver with 4 Ω source/sink resistors. Used in universal-input electronic ballasts and SMPS requiring IEC 61000-3-2 compliance.

For engineers reviewing the TDA4862GGEGXUMA2 datasheet, TDA4862GGEGXUMA2 pinout, TDA4862GGEGXUMA2 application, or TDA4862GGEGXUMA2 equivalent, key selection criteria include its DCM-based PFC architecture, integrated overvoltage regulation, 0.8 MHz voltage amplifier bandwidth, 75 µA standby supply current, and compatibility with worldwide AC line voltages (90–270 VAC) without manual range switching.

Technical Context

The TDA4862GGEGXUMA2 implements a one-quadrant analog multiplier with linear input ranges of 0–4.0 V (MULTIN) and 2.5–4.0 V (VAOUT), enabling instantaneous line-voltage-proportional current shaping. Its zero-current detector uses an auxiliary winding interface with Schmitt-trigger hysteresis (0.6 V) and internal 5 V/0.6 V clamps to prevent false triggering and substrate injection.

Voltage regulation combines a compensated transconductance amplifier (GBW = 0.8 MHz, phase margin = 80°) forming an integrator with external capacitor at VAOUT–VSENSE, plus fast overvoltage protection that reduces multiplier output when VAOUT current exceeds an internal threshold-critical during load removal or arcing events.

Key Specifications

Pinout & Package

PG-DSO-8-1 (8-pin SOIC, exposed pad, RoHS-compliant, moisture sensitivity level 3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power-factor controller applications.

Compared with ICE2PCS01G and TDA4863G, the TDA4862GGEGXUMA2 offers superior THD performance in DCM operation due to zero-current switching and analog multiplier linearity, but lacks integrated soft-start and requires external start-up circuitry-making it optimal for legacy-compatible, ultra-low-harmonic lighting systems.

Availability

TDA4862GGEGXUMA2 is available at Aetrix Electronics and suitable for LED streetlight ballasts, industrial SMPS preconverters, compact fluorescent lamp drivers, and medical power supply input stages requiring stable component supply and long-term obsolescence management.

Supply support for TDA4862GGEGXUMA2 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-voltage analog and mixed-signal solutions.

The TDA4862 belongs to Infineon's legacy bipolar PFC controller product line, engineered specifically for cost-effective, high-efficiency DCM boost preconverters in lighting and universal-input power supplies.

FAQ

What is the recommended external capacitor value between VAOUT and VSENSE?

A 100 nF to 1 µF ceramic capacitor is recommended to form the integrator with the voltage amplifier. This sets the loop bandwidth below 20 Hz for stable output regulation across line cycles while rejecting 100/120 Hz ripple. Larger values improve low-frequency stability but increase start-up time; smaller values risk instability under dynamic load changes.

Can TDA4862GGEGXUMA2 operate with 277 VAC input?

Yes-it supports universal AC inputs up to 277 VAC RMS when used with appropriate input rectifier and bulk capacitor ratings. The internal undervoltage lockout (11 V turn-on) and VCC clamp (11 V zener) ensure safe start-up and operation; external VCC supply must be derived via a start-up resistor rated for peak line voltage (≈390 V).

How does the zero-current detector interface with the boost inductor?

It connects to an auxiliary winding wound on the same core as the boost inductor, providing a voltage proportional to dI/dt. When inductor current reaches zero, the auxiliary voltage collapses, triggering DETIN. An external series resistor limits current into the internal 5 V clamp, and the Schmitt trigger (0.6 V hysteresis) prevents noise-induced false triggering during transient recovery.

Is there a recommended MOSFET gate resistor for GTDRV?

No external gate resistor is required-the totem-pole driver includes optimized 4 Ω internal source/sink resistors to minimize cross-conduction. Adding external resistance degrades switching speed and increases MOSFET switching losses. For layout, keep GTDRV trace short and use local 0.1 µF ceramic decoupling between GTDRV and GND near the MOSFET gate.